RESONANT dc dc topologies demonstrate several advantages
|
|
- Georgiana Nelson
- 5 years ago
- Views:
Transcription
1 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 54, NO. 6, NOVEMBER/DECEMBER A Voltage Quadrupler Rectifier Based Pulsewidth Modulated LLC Converter With Wide Output Range Ming Shang and Haoyu Wang, Member, IEEE Abstract LLC resonant converter is a soft switching frequency modulated dc dc topology with its switching frequency near the resonant frequency. However, in applications where a wide output voltage is desired, it is extremely difficult to tune its operation close to the resonant frequency. In this paper, a novel pulsewidth modulated LLC type resonant converter based on voltage quadrupler rectifier is proposed. The proposed converter always operates at the resonant frequency and is able to achieve a wide output voltage range by modulating the duty cycle of the secondary side auxiliary MOSFET. This brings the benefits of the decreased circulating current and corresponding conduction loss, as well as the simplification of the parameters selection and magnetic component design. Zero-voltage-switching and zero-current-switching are realized among all power MOSFETs and all power diodes, respectively. Detailed circuit operation principles and modeling method are presented. A 1.3-kW converter prototype, generating V output from 390-V dc-link is designed. Both the circuit functionality and the theoretical analysis are verified in the experimental results. Index Terms LLC, pulsewidth modulation (PWM), voltage quadrupler, wide output voltage, zero-voltage-switching (ZVS). Fig. 1. Block diagram of a typical resonant dc dc converter. I. INTRODUCTION RESONANT dc dc topologies demonstrate several advantages including low switching losses and high conversion efficiency, high switching frequency and high power density, wide zero-voltage-switching (ZVS) range, and low electromagnetic interference [1] [3]. Fig. 1 provides the block diagram of typical resonant topologies [4]. As shown, a resonant converter usually consists of five stages: switch network, resonant tank, high-frequency transformer, secondary side rectifier, and low-pass filter. Based on the difference in the resonant tank configurations, resonant converters are classified into different categories. Among them, LLC resonant converter is considered as Manuscript received January 15, 2018; revised April 21, 2018; accepted June 19, Date of publication June 24, 2018; date of current version October 12, Paper 2018-IPCC-0061.R1, presented at the 2017 IEEE Applied Power Electronics Conference and Exposition, Tampa, FL, USA, Mar , and approved for publication in the IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS by the Industrial Power Converter Committee of the IEEE Industry Applications Society. This work was supported in part by the National Natural Science Foundation of China under Grant , and in part by the Shanghai Sailing Program under Grant 16YF (Corresponding author: Haoyu Wang.) The authors are with the Power Electronics and Renewable Energies Laboratory, School of Information Science and Technology, Shanghai Tech University, Shanghai , China ( , shangming@shanghaitech.edu.cn; wanghy.shanghaitech@gmail.com). Color versions of one or more of the figures in this paper are available online at Digital Object Identifier /TIA Fig. 2. DC voltage characteristics of LLC topology adapted to wide output voltage range. an attractive option in multiple applications, such as renewable energy systems [5], [6], LED lighting [7], [8], and plug-in electric vehicle (PEV) onboard chargers [9], [10]. It is worth mentioning that for the LLC converter, its voltage gain is regulated by frequency modulation. When the switching frequency (f s ) is matched with its resonance frequency (f r ), the normalized voltage gain is unity, while the circuit operation is considered as most efficient. This is because LLC topology demonstrates the minimum conduction losses and switching losses at the resonant frequency [11]. However, in applications where a wide output voltage range is required [12] [14], f s must swing in a wide range to fit this wide voltage gain range. This phenomenon can be observed from the gain-frequency curves of the LLC topology as plotted in Fig. 2. If the normalized frequency deviates above unity, the turning OFF current increases and the secondary side diodes lose IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission. See standards/publications/rights/index.html for more information.
2 6160 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 54, NO. 6, NOVEMBER/DECEMBER 2018 Fig. 3. Schematic of the proposed converter. zero-current-switching (ZCS) turning OFF feature. While, if the normalized frequency deviates below unity, both the circulating current and the component current stresses increase. In either approach, the circuit operation is no longer optimal. To alleviate this problem, different modified LLC type topologies are investigated in the literature [15] [22]. In [15], the output voltage is mainly regulated by frequency modulation. Pulsewidth modulation (PWM) control is introduced to change the circuit structure. This increases the control complexity. In [16], phase shift control is adopted on the secondary side. It mainly focuses on compensating the switching frequency deviation in hold-up mode, which usually happens in short time periods. The topologies proposed in [17] [19] mainly investigate wide input range applications and are not suitable for high output voltage applications. In [20], a PWM LLC topology is introduced to optimize the circuit operation in light load applications. In [21] and [22], two fixed frequency LLC topologies are proposed for PEV onboard charging applications. However, the converter structures are complicated with large components count. In [23], a novel LLC type resonant topology is proposed. This paper is the extension of the conference paper. This proposed converter achieves a wide output voltage range with f s tuned to f r. The output voltage and current are regulated by the duty cycle of the secondary side MOSFET. The proposed converter demonstrates benefits including 1) optimum operation of the main LLC power circuit; 2) ZVS turning ON of all active MOSFETs; 3) ZCS turning OFF of diodes on the secondary side; 4) reduced circuit control complexity; 5) reduced components voltage stresses on the second side; and 6) reduced circulating current and conduction losses. This paper is organized as follows. The proposed topology is presented in Section II. The modeling and design considerations are presented in Section III. Furthermore, experimental results of a 1.3-kW prototype are demonstrated in Section IV to validate the concept. Finally, Section V concludes the paper. II. PROPOSED CONVERTER A. Topology Description The schematic of the proposed converter is plotted in Fig. 3. The primary side structure is identical to that of full-bridge LLC resonant converter: all MOSFETs have a constant duty cycle close to 0.5. To prevent the circuit shoot through, the upper and lower power MOSFETs are turned ON and OFF complementarily with certain deadband (t dead ). The secondary side structure is Fig. 4. Converter equivalent circuits with (a) d = 0and(b)d = 1. derived from the conventional voltage quadrupler rectifier (VQR), which is composed of six diodes, four capacitors, and a two-quadrant switch. As shown, an active MOSFET (S 5 ) is added on the secondary side. The output voltage can be regulated by actively controlling the duty cycle of S 5. Therefore, the main LLC topology always operates at f r. B. Operation Principle In the proposed converter, the primary side full bridge generates a constant frequency (equals to f r ) square waveform. While on the secondary side, S 5 s switching frequency also equals to f r. In the secondary side, a phase shift time τt s is enforced between the turning ON actions of S 5 and S 2,3. The phase shift is enforced to facilitate the ZVS of S 5. d is the duty cycle of S 5.Ifd is below 0.5 τ or higher than 1 τ, the output voltage will be constant. This means that the converter loses its PWM feature. Therefore, to maintain an effective PWM, d should be constrained within the range of [0.5 τ, 1 τ]. However, it is also worth mentioning that 1) when d is within [0, 0.5 τ), the converter secondary side is equivalent to a voltage-doubler rectifier (VDR); 2) when d is within (1 τ, 1], the converter secondary side is equivalent to a VQR; and 3) in the normal mode, the effective duty cycles d e = d τ. It should be noted d e is within [0, 0.5]. 1) VDR Mode: In this mode, the operation principle is similar to that of the conventional LLC resonant converter. The equivalent circuit is plotted in Fig. 4(a). If d is 0, S 5 functions as a diode, and D 3,4 are OFF. All the MOSFETs and diodes can achieve ZVS turning ON and ZCS turning OFF, respectively. Meanwhile, voltage balance for C 3 and C 4 can be easily achieved. Therefore, the voltages across C 3 or C 4 are equal to half of the output voltage. In this mode, the output voltage is defined as V o = 2V DC n where n is the transformer turns ratio. (1)
3 SHANG AND WANG: VOLTAGE QUADRUPLER RECTIFIER BASED PULSEWIDTH MODULATED LLC CONVERTER ) VQR Mode: In this mode, the operation principle is also similar to that of the conventional LLC resonant converter. The equivalent circuit is illustrated in Fig. 4(b). If d is 1, S 5 is ON and D 1,2 are OFF. The circuit operation is similar to that in the VDR mode. All the MOSFETs and diodes can achieve ZVS turning ON and ZCS turning OFF, respectively. Meanwhile, the voltages across C 3 and C 4 are equal to half of the output voltage. The sum of the voltages across C 1 and C 2 also equal to half of the output voltage. The output voltage is defined as V o = 4V DC n (2) 3) Normal Mode: It should be noted that there is a secondary resonant frequency (f m ) in the LLC resonant tank. f m is the resonance frequency between (L r + L m ) and C r, f m = 1 2π (L r + L m ) C r. (3) The switching frequency is designed to be larger than f m.this ensures that the resonant tank works in the inductive region and guarantees the ZVS operation. The key steady-state waveforms of the converter in the normal mode (d = 0.5) are plotted in Fig. 5. As shown, a time delay, τ, is enforced between the turning ON actions of S 2 and S 5.In each switching cycle, there are 12 different operating modes. One specific switching period, [t 0,t 12 ), is extracted for detail analyses. Those operating modes correspond to 12 equivalent circuits as plotted in Fig. 6. The operating modes analysis is based on the assumption that C 1 4 is sufficiently large, such that its voltage ripples can be ignored. Thus, the capacitor voltages are considered as dc voltages, V 1 4, respectively. Mode I. [t 0,t 1 ): At t 0, the body diodes of S 2 and S 3 conduct. This creates a zero voltage condition for the turning ON of the MOSFETs. At t 0,theMOSFETs (S 2 and S 3 ) channels are turned ON with ZVS. S 5 is OFF in this mode. The voltage across L m is nv 2. According to Fig. 5, the secondary side current (i s )is negative. The body diode of S 5 and D 4 start to conduct as shown in Fig. 6. Mode II. [t 1,t 2 ): Mode II begins at t 1 when D 5 begins to conduct. The current through L m (i Lm ) continues to decrease linearly. Mode III. [t 2,t 3 ): At t 2, S 5 is turned ON with ZVS. In the previous mode, i s flows through the body diode of S 5. Before the S 5 s channel conducts, the voltage across S 5 has been discharged to be zero. Hence, ZVS can be achieved in S 5. In mode III, i s flows through the channel of S 5 instead of its body diode. Mode IV. [t 3,t 4 ): Mode IV begins at t 3 when the current through the inductor (i Lr ) becomes negative. L r continues to resonate with the resonant capacitor (C r ). i s keeps flowing through the channel of S 5. Mode V. [t 4,t 5 ): At t 4, the current through the rectifier D 5 (i D 5 ) reaches zero. In this mode, the zero current turn-off of D 5 is achieved. D 5 is OFF during this mode. Fig. 5. Steady state operation waveforms in normal mode. Mode VI. [t 5,t 6 ): Mode VI begins at t 5 when i D 4 reaches zero. Meanwhile, i Lm intersects with i Lr. In this mode, the zero current turn-off of D 4 is achieved. Mode VII. [t 6,t 7 ): Mode VII begins at t 6 when S 2,3 are turned OFF simultaneously. At the beginning of this mode, i Lr discharges and charges the output capacitors of S 1 4, and then flows through the body diodes of S 1 and S 4. Thus, v ab is inverted from V DC to V DC while i s is kept zero. Mode VIII. [t 7,t 8 ): At t 7, S 1,4 are both turned ON with zero voltage. The voltage across L m is nv 1. In this mode, the secondary side D 3 and D 6 continue to conduct, and i s changes to positive. Mode VIII ends when i Lr reaches zero. Mode IX. [t 8,t 9 ): At t 8, i Lr begins to change its polarity to positive. i Lm continue to increase linearly since the voltage across the L m is positive. Mode IX ends when S 5 is turned OFF. Mode X. [t 9,t 10 ): Mode X starts as S 5 is turned OFF at t 9. Since i Lr is continuous, the current path is switched from S 5 to D 2. Hence, the voltage across L m is n(v 1 + V 2 ). i Lm continues to increase linearly in this mode. Mode X ends when i s reaches zero.
4 6162 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 54, NO. 6, NOVEMBER/DECEMBER 2018 Fig. 6. Operation modes breakdown. Mode XI. [t 10,t 11 ): At t 10, i s reaches zero. Meanwhile, D 2,3,6 turn OFF with zero current. Mode XI ends when S 1 and S 4 are turned OFF at t 11. Mode XII. [t 11,t 12 ): Mode XII begins in the deadband at t 11. i Lr discharges and charges the output capacitors of S 1 4, and then flows through the body diodes of S 2 and S 3. Mode XII ends when the switch pattern of S 1 S 4 inverts again. This also denotes the beginning of the next switching period. III. MODELINGS AND DESIGN CONSIDERATIONS A. Equivalent Models Based on the steady-state analysis in Section II-B, the equivalent circuit models can be obtained. The following analysis is based on the approximation that the narrow time intervals, t 5 t 7 and t 11 t 12, can be neglected. Moreover, the voltage source and the impedance on the secondary side of the transformer can
5 SHANG AND WANG: VOLTAGE QUADRUPLER RECTIFIER BASED PULSEWIDTH MODULATED LLC CONVERTER 6163 Fig. 9. Normalized voltage gain versus equivalent R and d e. Fig. 7. Equivalent models. (a) State I: t 0 t<t 5. (b) State II: t 7 t<t 9. (c) State III: t 9 t<t 10. (d) State IV: t 10 t<t 11. Therefore, the peak value of the current through D 6 is Fig. 8. Gate signals and simplified current waveforms. i D 6 peak = 4V o. (5) 3Rd e Thus, the peak value of i Lr is i Lr peak = 8V o. (6) 3Rnd e Assuming the voltage on C r is sine wave, its peak value is V Cr peak = 8 2πL r f r V o. (7) nr In State III, the output voltage source is changed to nv C 4, i Lr (t) begins to decrease from i Lr peak. In State IV, no power is delivered to the secondary side. Based on the law of energy conservation and assuming the converter is ideal without intermediate power loss, the input power is equal to the power delivered to the load. Thus, the output voltage can be derived as V O = 12nV DC R [4L m f r d e + f r ] d e 4L m f r [3Rn 2 d 2 e + 32f r + 96πL r f r (1 4d e )d 2 e] be transferred to the primary side with a certain ratio. The resultant equivalent circuit models and the corresponding current waveforms are plotted in Figs. 7 and 8, respectively. B. Voltage Conversion Ratio As shown in Fig. 7, in State I, the input voltage source reverts its polarity. L r resonates with C r. This is similar to the VQR mode as analyzed in Section II-B. The peak value of i Lm is i Lm peak = V DC 4L m f r. (4) In State II, the output voltage source is changed from nv C 2 to nv C 1. i Lr (t) begins to increase from i Lm peak. i D 6 (t) increases from zero. According to the bottom curve in Fig. 8, the average value of i D 6 (t) equals to the output current, i o. + 4V DC n. (8) Fig. 9 plots the normalized output voltage gain versus the effective load resistance and the effective duty cycle. As shown, the output voltage is a strong function of the effective duty cycle and a weak function of the effective load resistance. This means that the voltage gain can be easily regulated by PWM. C. Design Considerations 1) Selection of L m : f r, Q, and L n are the resonant frequency, quality factor, and inductor ratio, and R is the output load resistance. f r, Q, and L n can be designed based on the first-harmonic approximation method f r = 1 2π L r C r (9)
6 6164 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 54, NO. 6, NOVEMBER/DECEMBER 2018 Fig. 10. Equivalent circuit during t dead.(a)i Lm < 0. (b) i Lm > 0. L n = L m (10) L r Lr /C r Q = n 2 R. (11) The detailed analysis has been discussed comprehensively in [24] and [25]. The LLC module always operates at f r and has no voltage regulation capability. Thus, since the increase of L m reduces the circuiting current, L m should be designed to be as large as possible. While the upper limit of L m can be found based on the ZVS requirement. According to the aforementioned operational principles analysis, once the output capacitance of MOSFET (C oss )isfullydischarged and the body diode of the MOSFET is in the ON-state during t dead,zvsof MOSFET is achieved. Fig. 10 illustrates the output capacitances charging/discharging processes of the primary-side MOSFETs. In Fig. 10, i Lm peak is the peak value of i Lm, and can be calculated by (4). In order to improve the accuracy of analysis, the transformer primary side parasitic capacitance C tr should be considered. Thus, selection of L m and t dead should comply with this inequation L m t dead 8 (C oss + 0.5C tr ) f r. (12) 1) Design of the Phase Shift Time: To ensure the ZVS turning-on of S 5, the phase shift time τt s has to be sufficiently large. In this work, τ is selected as 0.125, mainly to reserve enough margin to ensure a secure zero voltage condition of S 5. With two different effective duty cycles (d e and d e), the gate signals and current waveforms of S 5 (v gs5, v gs5, i S 5, and i S 5 )are plotted in Fig. 11. At t 1, the inversion layer of S 5 is formed, the negative current commutates from the body diode to the MOSFET channel. This is mainly because the MOSFET channel demonstrates a low on resistance and voltage drop. Therefore, the negative half cycle of i S 5 can always be divided into diode conduction (t 0, t 1 ] and MOSFET channel conduction (t 1,t 2 ]. Since τt s equals to t 1 t 0, the duration of those two operation regions can be regulated by τ. Typically, the voltage drop of MOSFET channel is lower than that of the body diode. Thus, reducing τ helps to reduce the corresponding semiconductor conduction loss. Fig. 11. Gate signals and simplified current waveforms. Fig. 12. Equivalent circuit in [t 0,t 2 ). According to KCL at node A in Fig. 12 and based on the charge balance of C 3 I o = i o (t) = i D 5 (t) + i C 3 (t) (13) i C 3 (t) = 0. (14) Thus, i D 5 (t) can be derived as i D 5 (t) = πv o sin ωt (15) R where ω equals to 2πf r. During [t 0,t 2 ) in Fig. 11, i s5 (t) equals to 2i D 5 (t) and can be derived directly from (15). Integral of i s5 (t) during [t 0,t 2 ) should be larger than the charge stored in output capacitance of S 5 (C oss5 ) to ensure the ZVS turning ON of S 5. Hence τ arccos(1 C R ωv 2 ) (16) ω where V 2 is the voltage across the output capacitor C 2. IV. EXPERIMENTAL RESULTS To verify the effectiveness of the proposed converter, a 390 V input, 250 V 420 V output, 1.3 kw, 100 khz converter prototype
7 SHANG AND WANG: VOLTAGE QUADRUPLER RECTIFIER BASED PULSEWIDTH MODULATED LLC CONVERTER 6165 TABLE I CIRCUIT SPECIFICATIONS AND DESIGN PARAMETERS Fig. 13. Fig. 14. Fig. 15. ZVS of S5 in normal mode with V o = 420 V. Fig. 16. ZVS of S 1 and S 3 in normal mode. Fig. 17. ZVS and ZCS the converter in normal mode with V o = 250 V. Converter operation waveforms in VDR mode. Converter operation waveforms in VQR mode. is designed and tested. The specifications and design parameters are summarized in Table I. Fig. 13 shows the converter operation in VDR mode at fr. As illustrated, the ZVS turning ON of S4 is achieved. il r lags vab with 390 V input. Fig. 14 demonstrates the circuit operation in VQR mode at fr. As shown, vds1 is discharged to zero before the channel of S1 is triggered. Therefore, S1 is turned ON with ZVS. il r leads vc r, validating an inductive resonant tank. Figs. 15 and 16 demonstrate the circuit operations at normal mode with output equals to 420 V. As shown in Fig. 15, the body diode of the S5 conducts before the conduction of MOSFET channel. This guarantees the ZVS turning ON of S5. As shown in Fig. 16, vds1 and vds3 drop to zero before the conduction of MOSFET channels. il r charges and discharges the corresponding output capacitors of MOSFETs. Therefore, ZVS is achieved on both primary side MOSFETs as well.
8 6166 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 54, NO. 6, NOVEMBER/DECEMBER 2018 Fig. 18. Experimental results of startup process with PWM method. Fig. 17 demonstrates the circuit operations at normal mode with output voltage equals to 250 V. At this operating point, the all primary side MOSFETs achieve ZVS. This can be observed from the waveforms of v gs4 and v ds4.thewaveformsofi D 5 and i D 6 show the ZCS turning OFF of the secondary diodes. In this paper, a variable duty cycle soft-start control strategy based on the output voltage is adopted. Initially, the primary side duty cycle d p is set as 0.1 to reduce the voltage and current stress in the resonant tank. Then, d p increases step by step based on Δd p =ΔV o (0.5 d 0 )/420, gradually moving on to 0.5 (ignoring the deadband) to allow the output voltage to build up. Fig. 18 shows the experimental waveforms of the soft-start process. The waveforms of the start-up current, primary side duty cycle d p, and the output voltage are captured. The experimental data are captured by the oscilloscope (Tektronix MDO4034B-3) in the peak detect acquisition mode. In this sampling mode with large time scale, signals ripples appear to be larger than their real values. This can be corrected in the zoom-in waveforms with a much smaller time scale (see Fig. 18). The experimental results show that the output voltage builds up smoothly without any severe current and voltage spikes. This soft-start process well protects the circuit. Fig. 19 demonstrates the mode transition with a 500-Ω resistive load. Three operation modes are illustrated: 1) VQR mode, S 5 s duty cycle is set as 1 and the output voltage is 440 V; 2) normal mode, S 5 s duty cycle is changed to 0.72 and the output voltage is 420 V; and 3) VDR mode, S 5 s duty cycle is changed to and the output voltage steps to 230 V. The mode transition is triggered by programming S 5 s duty cycle. It can be seen a rather smooth mode transition is achieved. The load transition waveforms are captured in Fig. 20. The output voltage is regulated to be always equal to 420 V. A simple digital PI compensator is employed in the controller. When the step changes of load resistance occurs, a fast dynamic response is obtained. As shown in Fig. 20, the output voltage is well regulated with small variation. According to (8), the curve of theoretically predicted output voltage versus duty cycle is plotted in Fig. 21. While the simulated and experimental data are also marked in the same figure. Fig. 19. Fig. 20. Experimental waveforms of the mode transition. Converter dynamic responses. As shown, the output voltage increases with the increase of the duty cycle. The theoretically predicted curve generally agrees with the simulated and experimental results with an acceptable error. At d = 0.425, there is 8.3% error between the theoretically predicted value and the experimental result. With the increase of the output voltage, this error decreases. The error mainly originates from the approximation and simplification adopted in the circuit modeling.
9 SHANG AND WANG: VOLTAGE QUADRUPLER RECTIFIER BASED PULSEWIDTH MODULATED LLC CONVERTER 6167 Fig. 21. Output voltage versus duty cycle with 150-Ω resistive load. V. CONCLUSION In this paper, a novel PWM LLC type resonant converter is proposed for wide output voltage range applications. The circuit operation principles are analyzed. The advantages of the proposed converter are detailed. The converter can always operate at its resonant frequency by adopting PWM on the secondary side. Meanwhile, it is worth to mention that hybridizing pulse width and frequency modulations is also feasible. This hybridization increases the output voltage range with reduced normalized voltage gain range of the LLC topology. A 1.3-kW converter prototype is designed to verify the proof of concept. The proposed converter topology is worthy approaching in applications where wide voltage gain range is desired. REFERENCES Fig. 22. Measured converter efficiency versus output power with different τ and V O. Fig. 23. V O. Measured converter efficiency versus output power with different Fig. 22 shows the efficiency curves of the proposed converter with 390 V input, different output voltages (250 V, 420 V) and different phase shift time (τ = 0.125, 0.725). It can be seen that the efficiency is improved by nearly 0.5% with reduced τ.thisis because the current is redirected to the MOSFET channel instead of its body diode. Thus, the conduction loss of secondary side MOSFET S 5 is reduced. This agrees with the phase shift time analysis in Section III. Fig. 23 shows the efficiency curves of the proposed converter with 390 V input and different output voltages (250 V, 390 V, 420 V). When the output voltage is 420 V, the peak efficiency is 93.94%. This prototype demonstrates overall good efficiency over wide output voltage and wide output power range. [1] S. W. Kang, H. J. Kim, and B. H. Cho, Adaptive voltage controlled oscillator for improved dynamic performance in LLC resonant converter, IEEE Trans. Ind. Appl., vol. 52, no. 2, pp , Mar./Apr [2] J. Zhang, W. G. Hurley, and W. H. Wolfle, Gapped transformer design methodology and implementation for LLC resonant converters, IEEE Trans. Ind. Appl., vol. 52, no. 1, pp , Jan [3] C. Shi, H. Wang, S. Dusmez, and A. Khaligh, A SiC-Based highefficiency isolated onboard PEV charger with ultrawide DC-Link voltage range, IEEE Trans. Ind. Appl., vol. 53, no. 1, pp , Jan [4] H. Wang, A hybrid ZVS resonant converter with reduced circulating current and improved voltage regulation performance, in Proc. IEEE Transport. Electrific. Conf. Expo, 2015, pp [5] Q. Zhang et al., A center point iteration MPPT method with application on the frequency-modulated LLC microinverter, IEEE Trans. Power Electron., vol. 29, no. 3, pp , Mar [6] M. Shang, H. Wang, and Q. Cao, Reconfigurable LLC topology with squeezed frequency span for high-voltage bus-based photovoltaic systems, IEEE Trans. Power Electron., vol. 33, no. 5, pp , May [7] S. W. Hong et al., Secondary-side LLC resonant controller IC with dynamic PWM dimming and dual-slope clock generator for LED backlight units, IEEE Trans. Power Electron., vol.26,no.11,pp ,Nov [8] C. A. Cheng, H. L. Cheng, and T. Y. Chung, A novel single-stage highpower-factor LED street-lighting driver with coupled inductors, IEEE Trans. Ind. Appl., vol. 50, no. 5, pp , Sep [9] X. Fang, H. Hu, and Z. J. Shen, Operation mode analysis and peak gain approximation of the LLC resonant converter, IEEE Trans. Power Electron., vol. 27, no. 4, pp , Apr [10] J. Lee and H. Chae, 6. 6-kW onboard charger design using DCM PFC converter with harmonic modulation technique and two-stage DC/DC converter, IEEE Trans. Ind. Electron., vol. 61, no. 3, pp , Mar [11] W. Feng, P. Mattavelli, and F. C. Lee, Pulsewidth locked loop (PWLL) for automatic resonant frequency tracking in LLC DC DC transformer (LLC -DCX), IEEE Trans. Power Electron., vol.28,no.4,pp ,Apr [12] Z. Fang, T. Cai, S. Duan, and C. Chen, Optimal design methodology for LLC resonant converter in battery charging applications based on time-weighted average efficiency, IEEE Trans. Power Electron., vol. 30, no. 10, pp , Oct [13] C. Buccella, C. Cecati, H. Latafat, P. Pepe, and K. Razi, Observer-Based control of LLC DC/DC resonant converter using extended describing functions, IEEE Trans. Power Electron., vol. 30, no. 10, pp , Oct [14] F. Musavi, M. Craciun, D. S. Gautam, W. Eberle, and W. G. Dunford, An LLC resonant DC DC converter for wide output voltage range battery charging applications, IEEE Trans. Power Electron., vol. 28, no. 12, pp , Dec [15] H. Wu, Y. Li, and Y. Xing, LLC resonant converter with semiactive variable-structure rectifier (SA-VSR) for wide output voltage range application, IEEE Trans. Power Electron., vol. 31, no.5, pp ,May 2016.
10 6168 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 54, NO. 6, NOVEMBER/DECEMBER 2018 [16] H. Wu, T. Mu, X. Gao, and Y. Xing, A secondary-side phase-shiftcontrolled LLC resonant converter with reduced conduction loss at normal operation for hold-up time compensation application, IEEE Trans. Power Electron., vol. 30, no. 10, pp , Oct [17] I. H. Cho, Y. Do Kim, and G. W. Moon, A half-bridge llc resonant converter adopting boost PWM control scheme for hold-up state operation, IEEE Trans. Power Electron., vol. 29, no. 2, pp , Feb [18] X. Sun, Y. Shen, Y. Zhu, and X. Guo, Interleaved boost integrated LLC resonant converter with fixed-frequency PWM control for renewable energy generation applications, IEEE Trans. Power Electron., vol.30,no.8, pp , Aug [19] X. Sun, X. Li, Y. Shen, B. Wang, and X. Guo, Dual-Bridge LLC resonant converter with fixed-frequency PWM control for wide input applications, IEEE Trans. Power Electron., vol. 32, no. 1, pp , Jan [20] F. Ajmal, H. Pan, C. He, G. Chen, and H. Chen, Pulse-width modulation control strategy for high efficiency LLC resonant converter with light load applications, IET Power Electron., vol. 7, no. 11, pp , Nov [21] C. Liu et al., High-Efficiency hybrid full-bridge half-bridge converter with shared ZVS lagging leg and dual outputs in series, IEEE Trans. Power Electron., vol. 28, no. 2, pp , Feb [22] B. Gu, C. Y. Lin, B. F. Chen, J. Dominic, and J. S. Lai, Zero-voltageswitching PWM resonant full-bridge converter with minimized circulating losses and minimal voltage stresses of bridge rectifiers for electric vehicle battery chargers, IEEE Trans. Power Electron., vol. 28, no. 10, pp , Oct [23] M. Shang and H. Wang, A LLC type resonant converter based on PWM voltage quadrupler rectifier with wide output voltage, in Proc. IEEE Appl. Power Electron. Conf. Expo., 2017, pp [24] C. Y. Hsu, J. T. Lai, M. C. Lin, M. K. Yang, M. J. Li, and R. W. Huang, The design and implementation of LLC resonant half-bridge converter with natural interleaved power-factor-correction, in Proc. Int. Conf. Power Electron. Drive Syst., 2011, pp [25] R. Beiranvand and B. Rashidian, Using LLC resonant converter for designing wide-range voltage source, IEEE Trans. Power Electron., vol.58, no. 5, pp , May Ming Shang was born in Jiangsu Province, China. He received the B.S. degree from the College of Information and Control Engineering, China University of Petroleum, Qingdao, China, in 2015, and is currently working toward the M.S. degree with the School of Information Science and Technology, ShanghaiTech University, Shanghai, China. His research interests include dc dc converters and renewable power systems. Haoyu Wang (S 12 M 14) received the bachelor s degree with distinguished honor from Zhejiang University, Hangzhou, China. He received the master s and Ph.D. degrees both in electrical engineering from the University of Maryland, College Park, MD, USA. He is currently a Tenure Track Assistant Professor with the School of Information Science and Technology, ShanghaiTech University, Shanghai, China. His research interests include power electronics, plug-in electric and hybrid electric vehicles, the applications of wide bandgap semiconductors, renewable energy harvesting, and power management integrated circuits. Dr. Wang is an Associate Editor of IEEE TRANSACTIONS ON TRANSPORTA- TION ELECTRIFICATION, and a Guest Associate Editor of CPSS Transactions on Power Electronics and Applications.
TYPICALLY, a two-stage microinverter includes (a) the
3688 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 33, NO. 5, MAY 2018 Letters Reconfigurable LLC Topology With Squeezed Frequency Span for High-Voltage Bus-Based Photovoltaic Systems Ming Shang, Haoyu
More informationLLC Resonant Converter for Battery Charging Application
International Journal of Electrical Engineering. ISSN 0974-2158 Volume 8, Number 4 (2015), pp. 379-388 International Research Publication House http://www.irphouse.com LLC Resonant Converter for Battery
More informationIN THE high power isolated dc/dc applications, full bridge
354 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 21, NO. 2, MARCH 2006 A Novel Zero-Current-Transition Full Bridge DC/DC Converter Junming Zhang, Xiaogao Xie, Xinke Wu, Guoliang Wu, and Zhaoming Qian,
More informationA NOVEL SOFT-SWITCHING BUCK CONVERTER WITH COUPLED INDUCTOR
A NOVEL SOFT-SWITCHING BUCK CONVERTER WITH COUPLED INDUCTOR Josna Ann Joseph 1, S.Bella Rose 2 PG Scholar, Karpaga Vinayaga College of Engineering and Technology, Chennai 1 Professor, Karpaga Vinayaga
More informationA Novel Single-Stage Push Pull Electronic Ballast With High Input Power Factor
770 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 48, NO. 4, AUGUST 2001 A Novel Single-Stage Push Pull Electronic Ballast With High Input Power Factor Chang-Shiarn Lin, Member, IEEE, and Chern-Lin
More informationA New Phase Shifted Converter using Soft Switching Feature for Low Power Applications
International OPEN ACCESS Journal Of Modern Engineering Research (IJMER A New Phase Shifted Converter using Soft Switching Feature for Low Power Applications Aswathi M. Nair 1, K. Keerthana 2 1, 2 (P.G
More informationZCS-PWM Converter for Reducing Switching Losses
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-issn: 2278-1676,p-ISSN: 2320-3331, Volume 9, Issue 1 Ver. III (Jan. 2014), PP 29-35 ZCS-PWM Converter for Reducing Switching Losses
More informationHigh Frequency Soft Switching Of PWM Boost Converter Using Auxiliary Resonant Circuit
RESEARCH ARTICLE OPEN ACCESS High Frequency Soft Switching Of PWM Boost Converter Using Auxiliary Resonant Circuit C. P. Sai Kiran*, M. Vishnu Vardhan** * M-Tech (PE&ED) Student, Department of EEE, SVCET,
More informationAnalysis and Design of a Bidirectional Isolated buck-boost DC-DC Converter with duel coupled inductors
Analysis and Design of a Bidirectional Isolated buck-boost DC-DC Converter with duel coupled inductors B. Ramu M.Tech (POWER ELECTRONICS) EEE Department Pathfinder engineering college Hanmakonda, Warangal,
More informationNovel Passive Snubber Suitable for Three-Phase Single-Stage PFC Based on an Isolated Full-Bridge Boost Topology
264 Journal of Power Electronics, Vol. 11, No. 3, May 2011 JPE 11-3-3 Novel Passive Snubber Suitable for Three-Phase Single-Stage PFC Based on an Isolated Full-Bridge Boost Topology Tao Meng, Hongqi Ben,
More informationA Double ZVS-PWM Active-Clamping Forward Converter: Analysis, Design, and Experimentation
IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 16, NO. 6, NOVEMBER 2001 745 A Double ZVS-PWM Active-Clamping Forward Converter: Analysis, Design, and Experimentation René Torrico-Bascopé, Member, IEEE, and
More informationHybrid Full-Bridge Half-Bridge Converter with Stability Network and Dual Outputs in Series
Hybrid Full-Bridge Half-Bridge Converter with Stability Network and Dual Outputs in Series 1 Sowmya S, 2 Vanmathi K 1. PG Scholar, Department of EEE, Hindusthan College of Engineering and Technology, Coimbatore,
More informationDesign Considerations for a Level-2 On-Board PEV Charger Based on Interleaved Boost PFC and LLC Resonant Converters
Design Considerations for a Level-2 On-Board PEV Charger Based on Interleaved Boost PFC and LLC Resonant Converters Haoyu Wang, Student Member, IEEE, Serkan Dusmez, Student Member, IEEE, and Alireza Khaligh,
More informationSoft-Switching Active-Clamp Flyback Microinverter for PV Applications
Soft-Switching Active-Clamp Flyback Microinverter for PV Applications Rasedul Hasan, Saad Mekhilef, Mutsuo Nakaoka Power Electronics and Renewable Energy Research Laboratory (PEARL), Faculty of Engineering,
More informationNovel Zero-Current-Switching (ZCS) PWM Switch Cell Minimizing Additional Conduction Loss
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 49, NO. 1, FEBRUARY 2002 165 Novel Zero-Current-Switching (ZCS) PWM Switch Cell Minimizing Additional Conduction Loss Hang-Seok Choi, Student Member, IEEE,
More informationMODELING AND SIMULATION OF LLC RESONANT CONVERTER FOR PHOTOVOLTAIC SYSTEMS
MODELING AND SIMULATION OF LLC RESONANT CONVERTER FOR PHOTOVOLTAIC SYSTEMS Shivaraja L M.Tech (Energy Systems Engineering) NMAM Institute of Technology Nitte, Udupi-574110 Shivaraj.mvjce@gmail.com ABSTRACT
More informationENERGY saving through efficient equipment is an essential
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 61, NO. 9, SEPTEMBER 2014 4649 Isolated Switch-Mode Current Regulator With Integrated Two Boost LED Drivers Jae-Kuk Kim, Student Member, IEEE, Jae-Bum
More informationIN recent years, the development of high power isolated bidirectional
IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 23, NO. 2, MARCH 2008 813 A ZVS Bidirectional DC DC Converter With Phase-Shift Plus PWM Control Scheme Huafeng Xiao and Shaojun Xie, Member, IEEE Abstract The
More informationPrecise Analytical Solution for the Peak Gain of LLC Resonant Converters
680 Journal of Power Electronics, Vol. 0, No. 6, November 200 JPE 0-6-4 Precise Analytical Solution for the Peak Gain of LLC Resonant Converters Sung-Soo Hong, Sang-Ho Cho, Chung-Wook Roh, and Sang-Kyoo
More informationBIDIRECTIONAL dc dc converters are widely used in
816 IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II: EXPRESS BRIEFS, VOL. 62, NO. 8, AUGUST 2015 High-Gain Zero-Voltage Switching Bidirectional Converter With a Reduced Number of Switches Muhammad Aamir,
More informationAn Interleaved High Step-Up Boost Converter With Voltage Multiplier Module for Renewable Energy System
An Interleaved High Step-Up Boost Converter With Voltage Multiplier Module for Renewable Energy System Vahida Humayoun 1, Divya Subramanian 2 1 P.G. Student, Department of Electrical and Electronics Engineering,
More informationADVANCED HYBRID TRANSFORMER HIGH BOOST DC DC CONVERTER FOR PHOTOVOLTAIC MODULE APPLICATIONS
ADVANCED HYBRID TRANSFORMER HIGH BOOST DC DC CONVERTER FOR PHOTOVOLTAIC MODULE APPLICATIONS SHAIK ALLIMBHASHA M.Tech(PS) NALANDA INSTITUTE OF ENGINEERING AND TECHNOLOGY G V V NAGA RAJU Assistant professor
More informationA DUAL SERIES DC TO DC RESONANT CONVERTER
A DUAL SERIES DC TO DC RESONANT CONVERTER V.ANANDHAN.,BE., ME, POWER SYSTEM SCSVMU UNIVERSITY anandhanvelu@gmail.com Dr.S.SENTAMIL SELVAN.,M.E.,Ph.D., ASSOCIATE PROFESSOR SCSVMU UNIVERSITY Abstract - A
More informationSoft-Switching Two-Switch Resonant Ac-Dc Converter
Soft-Switching Two-Switch Resonant Ac-Dc Converter Aqulin Ouseph 1, Prof. Kiran Boby 2,, Prof. Dinto Mathew 3 1 PG Scholar,Department of Electrical and Electronics Engineering, Mar Athanasius College of
More informationZVS IMPLEMENTATION IN INTERLEAVED BOOST RECTIFIER
ZVS IMPLEMENTATION IN INTERLEAVED BOOST RECTIFIER Kanimozhi G. and Sreedevi V. T. School of Electrical Engineering, VIT University, Chennai, India E-Mail: kanimozhi.g@vit.ac.in ABSTRACT This paper presents
More informationA LLC RESONANT CONVERTER WITH ZERO CROSSING NOISE FILTER
A LLC RESONANT CONVERTER WITH ZERO CROSSING NOISE FILTER M. Mohamed Razeeth # and K. Kasirajan * # PG Research Scholar, Power Electronics and Drives, Einstein College of Engineering, Tirunelveli, India
More informationComprehensive Topological Analyses of Isolated Resonant Converters in PEV Battery Charging Applications
Comprehensive Topological Analyses of Isolated Resonant Converters in PEV Battery Charging Applications Haoyu Wang, Student Member, IEEE, and Alireza Khaligh, Senior Member, IEEE Power Electronics, Energy
More informationDC DC CONVERTER FOR WIDE OUTPUT VOLTAGE RANGE BATTERY CHARGING APPLICATIONS USING LLC RESONANT
Volume 114 No. 7 2017, 517-530 ISSN: 1311-8080 (printed version); ISSN: 1314-3395 (on-line version) url: http://www.ijpam.eu ijpam.eu DC DC CONVERTER FOR WIDE OUTPUT VOLTAGE RANGE BATTERY CHARGING APPLICATIONS
More informationA Bidirectional Series-Resonant Converter For Energy Storage System in DC Microgrids
IOSR Journal of Engineering (IOSRJEN) ISSN (e): 2250-3021, ISSN (p): 2278-8719 PP 01-09 www.iosrjen.org A Bidirectional Series-Resonant Converter For Energy Storage System in DC Microgrids Limsha T M 1,
More informationIN APPLICATIONS where nonisolation, step-down conversion
3664 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 27, NO. 8, AUGUST 2012 Interleaved Buck Converter Having Low Switching Losses and Improved Step-Down Conversion Ratio Il-Oun Lee, Student Member, IEEE,
More informationA HIGHLY EFFICIENT ISOLATED DC-DC BOOST CONVERTER
A HIGHLY EFFICIENT ISOLATED DC-DC BOOST CONVERTER 1 Aravind Murali, 2 Mr.Benny.K.K, 3 Mrs.Priya.S.P 1 PG Scholar, 2 Associate Professor, 3 Assistant Professor Abstract - This paper proposes a highly efficient
More informationTHE converter usually employed for single-phase power
82 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 46, NO. 1, FEBRUARY 1999 A New ZVS Semiresonant High Power Factor Rectifier with Reduced Conduction Losses Alexandre Ferrari de Souza, Member, IEEE,
More informationLinear Transformer based Sepic Converter with Ripple Free Output for Wide Input Range Applications
Linear Transformer based Sepic Converter with Ripple Free Output for Wide Input Range Applications Karthik Sitapati Professor, EEE department Dayananda Sagar college of Engineering Bangalore, India Kirthi.C.S
More informationACEEE Int. J. on Control System and Instrumentation, Vol. 02, No. 02, June 2011
A New Active Snubber Circuit for PFC Converter Burak Akýn Yildiz Technical University/Electrical Engineering Department Istanbul TURKEY Email: bakin@yildizedutr ABSTRACT In this paper a new active snubber
More informationSepic Topology Based High Step-Up Step down Soft Switching Bidirectional DC-DC Converter for Energy Storage Applications
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-issn: 2278-1676,p-ISSN: 2320-3331, Volume 12, Issue 3 Ver. IV (May June 2017), PP 68-76 www.iosrjournals.org Sepic Topology Based High
More informationKey words: Bidirectional DC-DC converter, DC-DC power conversion,zero-voltage-switching.
Volume 4, Issue 9, September 2014 ISSN: 2277 128X International Journal of Advanced Research in Computer Science and Software Engineering Research Paper Available online at: www.ijarcsse.com Designing
More informationImplementation of Voltage Multiplier Module in Interleaved High Step-up Converter with Higher Efficiency for PV System
Implementation of Voltage Multiplier Module in Interleaved High Step-up Converter with Higher Efficiency for PV System 1 Sindhu P., 2 Surya G., 3 Karthick D 1 PG Scholar, EEE Department, United Institute
More informationHigh Frequency Isolated Series Parallel Resonant Converter
Indian Journal of Science and Technology, Vol 8(15), DOI: 10.17485/ijst/2015/v8i15/52311, July 2015 ISSN (Print) : 0974-6846 ISSN (Online) : 0974-5645 High Frequency Isolated Series Parallel Resonant Converter
More informationZVT Buck Converter with Synchronous Rectifier
IJSTE - International Journal of Science Technology & Engineering Volume 3 Issue 8 February 217 ISSN (online): 2349-784X ZVT Buck Converter with Synchronous Rectifier Preenu Paul Assistant Professor Department
More informationA High Efficient DC-DC Converter with Soft Switching for Stress Reduction
A High Efficient DC-DC Converter with Soft Switching for Stress Reduction S.K.Anuja, R.Satheesh Kumar M.E. Student, M.E. Lecturer Sona College of Technology Salem, TamilNadu, India ABSTRACT Soft switching
More informationA Dual Half-bridge Resonant DC-DC Converter for Bi-directional Power Conversion
A Dual Half-bridge Resonant DC-DC Converter for Bi-directional Power Conversion Mrs.Nagajothi Jothinaga74@gmail.com Assistant Professor Electrical & Electronics Engineering Sri Vidya College of Engineering
More informationTransformerless Buck-Boost Converter with Positive Output Voltage and Feedback
Transformerless Buck-Boost Converter with Positive Output Voltage and Feedback Aleena Paul K PG Student Electrical and Electronics Engineering Mar Athanasius College of Engineering Kerala, India Babu Paul
More informationA Single Switch High Gain Coupled Inductor Boost Converter
International Research Journal of Engineering and Technology (IRJET) e-issn: 2395-0056 Volume: 04 Issue: 02 Feb -2017 www.irjet.net p-issn: 2395-0072 A Single Switch High Gain Coupled Inductor Boost Converter
More informationChuan Shi, Student Member, IEEE, Alireza Khaligh, Senior Member, IEEE, andhaoyuwang, Member, IEEE
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 52, NO. 4, JULY/AUGUST 2016 3461 Interleaved SEPIC Power Factor Preregulator Using Coupled Inductors In Discontinuous Conduction Mode With Wide Output Voltage
More informationA High Step-Up DC-DC Converter
A High Step-Up DC-DC Converter Krishna V Department of Electrical and Electronics Government Engineering College Thrissur. Kerala Prof. Lalgy Gopy Department of Electrical and Electronics Government Engineering
More informationPhotovoltaic Controller with CCW Voltage Multiplier Applied To Transformerless High Step-Up DC DC Converter
Photovoltaic Controller with CCW Voltage Multiplier Applied To Transformerless High Step-Up DC DC Converter Elezabeth Skaria 1, Beena M. Varghese 2, Elizabeth Paul 3 PG Student, Mar Athanasius College
More informationA New ZVS Bidirectional DC-DC Converter With Phase-Shift Plus PWM Control Scheme
A New ZVS Bidirectional DC-DC Converter With Phase-Shift Plus PWM Control Scheme Huafeng Xiao, Liang Guo, Shaojun Xie College of Automation Engineering,Nanjing University of Aeronautics and Astronautics
More informationCHAPTER 2 A SERIES PARALLEL RESONANT CONVERTER WITH OPEN LOOP CONTROL
14 CHAPTER 2 A SERIES PARALLEL RESONANT CONVERTER WITH OPEN LOOP CONTROL 2.1 INTRODUCTION Power electronics devices have many advantages over the traditional power devices in many aspects such as converting
More informationPerformance Enhancement of a Novel Interleaved Boost Converter by using a Soft-Switching Technique
Performance Enhancement of a Novel Interleaved Boost Converter by using a Soft-Switching Technique 1 M. Penchala Prasad 2 Ch. Jayavardhana Rao M.Tech 3 Dr. Venu gopal. N M.E PhD., P.G Scholar, Associate
More informationISSN Vol.07,Issue.06, July-2015, Pages:
ISSN 2348 2370 Vol.07,Issue.06, July-2015, Pages:0828-0833 www.ijatir.org An improved Efficiency of Boost Converter with Voltage Multiplier Module for PV System N. NAVEENKUMAR 1, E. CHUDAMANI 2, N. RAMESH
More informationLLC Resonant Converter with Capacitor Diode Clamped Current Limiting Fundamental Harmonic Approximation
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p-ISSN: 2278-8735 PP 57-62 www.iosrjournals.org LLC Resonant Converter with Capacitor Diode Clamped Current Limiting
More informationSoft-Switching DC-DC Converters Based on A Phase Shift Controlled Active Boost Rectifier Using Fuzzy Controller
Soft-Switching DC-DC Converters Based on A Phase Shift Controlled Active Boost Rectifier Using Fuzzy Controller 1 SapnaPatil, 2 T.B.Dayananda 1,2 Department of EEE, Dr. AIT, Bengaluru. Abstract High efficiency
More informationNovel Soft-Switching DC DC Converter with Full ZVS-Range and Reduced Filter Requirement Part I: Regulated-Output Applications
184 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 16, NO. 2, MARCH 2001 Novel Soft-Switching DC DC Converter with Full ZVS-Range and Reduced Filter Requirement Part I: Regulated-Output Applications Rajapandian
More informationI. INTRODUCTION II. LITERATURE REVIEW
ISSN XXXX XXXX 2017 IJESC Research Article Volume 7 Issue No.11 Non-Isolated Voltage Quadrupler DC-DC Converter with Low Switching Voltage Stress Praveen Kumar Darur 1, Nandem Sandeep Kumar 2, Dr.P.V.N.Prasad
More informationZERO VOLTAGE TRANSITION SYNCHRONOUS RECTIFIER BUCK CONVERTER
International Journal of Electrical and Electronics Engineering Research (IJEEER) ISSN(P): 225-155X; ISSN(E): 2278-943X Vol. 4, Issue 3, Jun 214, 75-84 TJPRC Pvt. Ltd. ZERO VOLTAGE TRANSITION SYNCHRONOUS
More informationDynamic Performance Investigation of Transformer less High Gain Converter with PI Controller
International Journal for Modern Trends in Science and Technology Volume: 03, Issue No: 06, June 2017 ISSN: 2455-3778 http://www.ijmtst.com Dynamic Performance Investigation of Transformer Kommesetti R
More informationA Color LED Driver Implemented by the Active Clamp Forward Converter
A Color LED Driver Implemented by the Active Clamp Forward Converter C. H. Chang, H. L. Cheng, C. A. Cheng, E. C. Chang * Power Electronics Laboratory, Department of Electrical Engineering I-Shou University,
More informationA Bidirectional Resonant DC-DC Converter for Electrical Vehicle Charging/Discharging Systems
A Bidirectional Resonant DC-DC Converter for Electrical Vehicle Charging/Discharging Systems Fahad Khan College of Automation Engineering Nanjing University of Aeronautics and Astronautics, Nanjing 10016,
More informationK.Vijaya Bhaskar. Dept of EEE, SVPCET. AP , India. S.P.Narasimha Prasad. Dept of EEE, SVPCET. AP , India.
A Closed Loop for Soft Switched PWM ZVS Full Bridge DC - DC Converter S.P.Narasimha Prasad. Dept of EEE, SVPCET. AP-517583, India. Abstract: - This paper propose soft switched PWM ZVS full bridge DC to
More information106 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 34, NO. 1, JANUARY 2019
106 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 34, NO. 1, JANUARY 2019 A Novel Soft-Switching Secondary-Side Modulated Multioutput DC DC Converter With Extended ZVS Range Zhiqing Li, Student Member,
More informationA NOVEL High Step-Up Converter with a Voltage Multiplier Module for a Photo Voltaic System
A NOVEL High Step-Up Converter with a Voltage Multiplier Module for a Photo Voltaic System *S.SWARNALATHA **RAMAVATH CHANDER *M.TECH student,dept of EEE,Chaitanya Institute Technology & Science *Assistant
More informationResonant Inverter. Fig. 1. Different architecture of pv inverters.
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-issn: 2278-1676,p-ISSN: 2320-3331, PP 50-58 www.iosrjournals.org Resonant Inverter Ms.Kavitha Paul 1, Mrs.Gomathy S 2 1 (EEE Department
More informationStudent Department of EEE (M.E-PED), 2 Assitant Professor of EEE Selvam College of Technology Namakkal, India
Design and Development of Single Phase Bridgeless Three Stage Interleaved Boost Converter with Fuzzy Logic Control System M.Pradeep kumar 1, M.Ramesh kannan 2 1 Student Department of EEE (M.E-PED), 2 Assitant
More informationA Single Switch DC-DC Converter for Photo Voltaic-Battery System
A Single Switch DC-DC Converter for Photo Voltaic-Battery System Anooj A S, Lalgy Gopi Dept Of EEE GEC, Thrissur ABSTRACT A photo voltaic-battery powered, single switch DC-DC converter system for precise
More informationA high Step-up DC-DC Converter employs Cascading Cockcroft- Walton Voltage Multiplier by omitting Step-up Transformer 1 A.Subrahmanyam, 2 A.
A high Step-up DC-DC Converter employs Cascading Cockcroft- Walton Voltage Multiplier by omitting Step-up Transformer 1 A.Subrahmanyam, 2 A.Tejasri M.Tech(Research scholar),assistant Professor,Dept. of
More informationInternational Journal of Engineering Research-Online A Peer Reviewed International Journal
RESEARCH ARTICLE ISSN: 2321-7758 DESIGN AND DEVELOPMENT OF A NEW SINGLE-PHASE SOFT SWITCHING POWER FACTOR CORRECTION CONVERTER THELMA NGANGOM 1, PRIYALAKSHMI KSHETRIMAYUM 2 1,2 electrical Engineering Department,
More informationLLC Series Resonant Converter with PID Controller for Battery Charging Application
LLC Series Resonant Converter with PID Controller for Battery Charging Application M. Imran Shahzad, Shahid Iqbal, and Soib Taib School of Electrical & Electronic Engineering, Engineering Campus, Universiti
More informationIntegrating Coupled Inductor and Switched- Capacitor based high gain DC-DC converter for PMDC drive
Integrating Coupled Inductor and Switched- Capacitor based high gain DC-DC converter for PMDC drive 1 Narayana L N Nudaya Bhanu Guptha,PG Student,2CBalachandra Reddy,Professor&Hod Department of EEE,CBTVIT,Hyderabad
More informationA CLCL Resonant DC/DC Converter for Two-Stage LED Driver System
A CLCL Resonant DC/DC Converter for Two-Stage LED Driver System 1 K. NAGARAJU, 2 K. JITHENDRA GOWD 1 PG Scholar, Dept. of Electrical Power System (EPS), Jawaharlal Nehru Technological University, Anantapuramu,
More informationInterleaved Current-Fed Resonant Converter with High Current Side Filter for EV and HEV Applications
IJSTE - International Journal of Science Technology & Engineering Volume 2 Issue 10 April 2016 ISSN (online): 2349-784X Interleaved Current-Fed Resonant Converter with High Current Side Filter for EV and
More informationCLOSED LOOP CONTROL OF THE Z SOURCE RESONANT CONVERTER FOR THE ELECTRIC VEHICLE WIRELESS CHARGER Shwetha K B 1, Shubha Kulkarni 2 1
CLOSED LOOP CONTROL OF THE Z SOURCE RESONANT CONVERTER FOR THE ELECTRIC VEHICLE WIRELESS CHARGER Shwetha K B 1, Shubha Kulkarni 2 1 P.G. Student, Power Electronics, Dayananda Sagar College of Engg., Bangalore,
More informationPower Factor Corrected Single Stage AC-DC Full Bridge Resonant Converter
Power Factor Corrected Single Stage AC-DC Full Bridge Resonant Converter Gokul P H Mar Baselios College of Engineering Mar Ivanios Vidya Nagar, Nalanchira C Sojy Rajan Assisstant Professor Mar Baselios
More informationNOWADAYS, several techniques for high-frequency dc dc
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 54, NO. 5, OCTOBER 2007 2779 Voltage Oscillation Reduction Technique for Phase-Shift Full-Bridge Converter Ki-Bum Park, Student Member, IEEE, Chong-Eun
More informationZero voltage switching active clamp buck-boost stage Cuk converter
Zero voltage switching active clamp buck-boost stage Cuk converter B.R. Lin and C.L. Huang Abstract: The paper presents an active clamp buck-boost stage Cuk converter to achieve soft switching commutation.
More informationA Novel Bridgeless Single-Stage Half-Bridge AC/DC Converter
A Novel Bridgeless Single-Stage Half-Bridge AC/DC Converter Woo-Young Choi 1, Wen-Song Yu, and Jih-Sheng (Jason) Lai Virginia Polytechnic Institute and State University Future Energy Electronics Center
More informationPOWERED electronic equipment with high-frequency inverters
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II: EXPRESS BRIEFS, VOL. 53, NO. 2, FEBRUARY 2006 115 A Novel Single-Stage Power-Factor-Correction Circuit With High-Frequency Resonant Energy Tank for DC-Link
More informationAn Interleaved Boost Converter with LC Coupled Soft Switching Mahesh.P 1, Srilatha.D 2 1 M.Tech (PE) Scholar, 2 Associate Professor
An Interleaved Boost Converter with LC Coupled Soft Switching Mahesh.P 1, Srilatha.D 2 1 M.Tech (PE) Scholar, 2 Associate Professor Department of EEE, Prakasam Engineering College, Kandukur, Prakasam District,
More informationAn Asymmetrical Dc-Dc Converter with a High Voltage Gain
International OPEN ACCESS Journal Of Modern Engineering Research (IJMER) An Asymmetrical Dc-Dc Converter with a High Voltage Gain Sarah Ben Abraham 1, Ms. Riya Scaria, 1, Assistant Professor Abstract:
More informationThe Parallel Loaded Resonant Converter for the Application of DC to DC Energy Conversions
Available Online at www.ijcsmc.com International Journal of Computer Science and Mobile Computing A Monthly Journal of Computer Science and Information Technology IJCSMC, Vol. 3, Issue. 10, October 2014,
More informationDesigning Of Bidirectional Dc-Dc Converter For High Power Application With Current Ripple Reduction Technique
Designing Of Bidirectional Dc-Dc Converter For High Power Application With Current Ripple Reduction Technique Vemu.Gandhi, Sadik Ahamad Khan PG Scholar, Assitent Professor NCET,Vijayawada, Abstract-----
More informationHIGH-FREQUENCY PWM dc dc converters have been
256 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 29, NO. 1, JANUARY 2014 A Novel ZVT-ZCT-PWM Boost Converter Nihan Altintaş, A. Faruk Bakan, and İsmail Aksoy Abstract In this study, a new boost converter
More informationANALYSIS OF SINGLE-PHASE Z-SOURCE INVERTER 1
ANALYSIS OF SINGLE-PHASE Z-SOURCE INVERTER 1 K. N. Madakwar, 2 Dr. M. R. Ramteke VNIT-Nagpur Email: 1 kapil.madakwar@gmail.com, 2 mrr_vrce@rediffmail.com Abstract: This paper deals with the analysis of
More informationAn Extensive Input Voltage and Fixed-Frequency Single Stage Series- Parallel LLC Resonant Converter for Dc Drive
Vol., Issue.5, Sep-Oct. 0 pp-3693-3698 ISSN: 49-6645 An Extensive Input Voltage and Fixed-Frequency Single Stage Series- Parallel LLC Resonant Converter for Dc Drive P.Ganesh, T.Manokaran,.Department of
More informationA Reduced Component Count Single-stage Electrolytic Capacitor-less Battery Charger with Sinusoidal Charging
A Reduced Component Count Single-stage Electrolytic Capacitor-less Battery Charger with Sinusoidal Charging Byeongwoo Kim, Minjae Kim and Sewan Choi Department of Electrical and Information Engineering
More informationAnalysis and Design of Soft Switched DC-DC Converters for Battery Charging Application
ISSN (Online) : 239-8753 ISSN (Print) : 2347-67 International Journal of Innovative Research in Science, Engineering and Technology Volume 3, Special Issue 3, March 24 24 International Conference on Innovations
More informationModular Multilevel Dc/Dc Converters with Phase-Shift Control Scheme for High-Voltage Dc-Based Systems
Modular Multilevel Dc/Dc Converters with Phase-Shift Control Scheme for High-Voltage Dc-Based Systems Mr.AWEZ AHMED Master of Technology (PG scholar) AL-HABEEB COLLEGE OF ENGINEERING AND TECHNOLOGY, CHEVELLA.
More informationPage 1026
A New Zcs-Pwm Full-Bridge Dc Dc Converter With Simple Auxiliary Circuits Ramalingeswara Rao M 1, Mr.B,D.S.Prasad 2 1 PG Scholar, Pydah College of Engineering, Kakinada, AP, India. 2 Assistant Professor,
More informationPerformance Improvement of Bridgeless Cuk Converter Using Hysteresis Controller
International Journal of Electrical Engineering. ISSN 0974-2158 Volume 6, Number 1 (2013), pp. 1-10 International Research Publication House http://www.irphouse.com Performance Improvement of Bridgeless
More informationSCIENCE & TECHNOLOGY
Pertanika J. Sci. & Technol. 25 (S): 9-18 (2017) SCIENCE & TECHNOLOGY Journal homepage: http://www.pertanika.upm.edu.my/ A Single-stage LED Driver with Voltage Doubler Rectifier Nurul Asikin, Zawawi 1
More informationA DC DC Boost Converter for Photovoltaic Application
International Journal of Engineering Research and Development e-issn: 2278-067X, p-issn: 2278-800X, Volume 8, Issue 8 (September 2013), PP. 47-52 A DC DC Boost Converter for Photovoltaic Application G.kranthi
More informationTHE demand for nonisolated high step-up dc dc converters
3568 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 27, NO. 8, AUGUST 2012 Nonisolated ZVZCS Resonant PWM DC DC Converter for High Step-Up and High-Power Applications Yohan Park, Byoungkil Jung, and Sewan
More informationModelling and Simulation of High Step up Dc-Dc Converter for Micro Grid Application
Vol.3, Issue.1, Jan-Feb. 2013 pp-530-537 ISSN: 2249-6645 Modelling and Simulation of High Step up Dc-Dc Converter for Micro Grid Application B.D.S Prasad, 1 Dr. M Siva Kumar 2 1 EEE, Gudlavalleru Engineering
More informationFOR THE DESIGN of high input voltage isolated dc dc
38 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 23, NO. 1, JANUARY 2008 Dual Interleaved Active-Clamp Forward With Automatic Charge Balance Regulation for High Input Voltage Application Ting Qian and Brad
More informationPerformance Evaluation of Isolated Bi-directional DC/DC Converters with Buck, Boost operations
Performance Evaluation of Isolated Bi-directional DC/DC Converters with Buck, Boost operations MD.Munawaruddin Quadri *1, Dr.A.Srujana *2 #1 PG student, Power Electronics Department, SVEC, Suryapet, Nalgonda,
More informationIN A CONTINUING effort to decrease power consumption
184 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 14, NO. 1, JANUARY 1999 Forward-Flyback Converter with Current-Doubler Rectifier: Analysis, Design, and Evaluation Results Laszlo Huber, Member, IEEE, and
More informationEvaluation of Two-Stage Soft-Switched Flyback Micro-inverter for Photovoltaic Applications
Evaluation of Two-Stage Soft-Switched Flyback Micro-inverter for Photovoltaic Applications Sinan Zengin and Mutlu Boztepe Ege University, Electrical and Electronics Engineering Department, Izmir, Turkey
More informationDUAL BRIDGE LLC RESONANT CONVERTER WITH FREQUENCY ADAPTIVE PHASE-SHIFT MODULATION CONTROL FOR WIDE VOLTAGE GAIN RANGE
DUAL BRIDGE LLC RESONANT CONVERTER WITH FREQUENCY ADAPTIVE PHASE-SHIFT MODULATION CONTROL FOR WIDE VOLTAGE GAIN RANGE S M SHOWYBUL ISLAM SHAKIB ELECTRICAL ENGINEERING UNIVERSITI OF MALAYA KUALA LUMPUR,
More informationImproved Step down Conversion in Interleaved Buck Converter and Low Switching Losses
Research Inventy: International Journal Of Engineering And Science Vol.4, Issue 3(March 2014), PP 15-24 Issn (e): 2278-4721, Issn (p):2319-6483, www.researchinventy.com Improved Step down Conversion in
More informationA Novel Single Phase Soft Switched PFC Converter
J Electr Eng Technol Vol. 9, No. 5: 1592-1601, 2014 http://dx.doi.org/10.5370/jeet.2014.9.5.1592 ISSN(Print) 1975-0102 ISSN(Online) 2093-7423 A Novel Single Phase Soft Switched PFC Converter Nihan ALTINTAŞ
More informationWITH THE development of high brightness light emitting
1410 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 23, NO. 3, MAY 2008 Quasi-Active Power Factor Correction Circuit for HB LED Driver Kening Zhou, Jian Guo Zhang, Subbaraya Yuvarajan, Senior Member, IEEE,
More information