Input Series-Output Parallel Connected Converter for High Voltage Power Conversion Applications Employing Charge Control
|
|
- Mervin Dixon
- 6 years ago
- Views:
Transcription
1 99IECEC12599 Input SeriesOutput Parallel Connected Converter for High Voltage Power Conversion Applications Employing Charge Control JungWon Kim, J. S. You and. H. Cho School of Electrical Engineering Seoul National University Seoul Korea Copyright 1999 Society of Automotive Engineers, Inc. ASTRACT In this paper, the charge control with the input voltage feed forward is proposed for the input seriesoutput parallel connected converter configuration for highvoltage power conversion applications. This control scheme accomplishes the output current sharing for the outputparallel connected modules as well as the input voltage sharing for the inputseries connected modules for all operating conditions including the transients. It also offers the robustness for the input voltage sharing control according to the component value mismatches among the modules. I. INTRODUCTION In the field of high voltage power conversion the circuit designer is often confronted with a problem that there are no semiconductor devices capable of sustaining the required voltage and suitable for the desired switching speed. For this reason, several deviceseries connection methods and converter topologies are proposed. ut the arising problem with deviceseries connection is the voltage balancing at the device turnoff. To get the voltage balancing, a passive or active balancing method is used. The passive method requires a snubber circuit and this causes slow switching speed and introduces additional losses. The active methods require complicated control circuits to get the voltage balancing [14]. And the control delay of the voltagebalancing controller [3,4] can increase the device stress, so the switching speed is restricted. Moreover, perfect balancing is hard to be accomplished during the switching transients. The problems mentioned above can be solved by the input seriesoutput parallelconnected converter configuration. The input seriesoutput parallel connected converter configuration has the input voltage balancing and the output current sharing requirements. In this paper, the charge control with the input voltage feed forward scheme is proposed, which balances the input voltage sharing as well as the output current sharing for each module. With this scheme, the converter modular approach can be easily implemented for any types of converter topologies. II. INPUT SERIESOUTPUT PARALLEL CONNECTED CONVERTER CONFIGURATION Fig.1 shows the input seriesoutput parallel connected converter configuration for highvoltage power conversion applications. Two modules are shown in this figure, but according to the input voltage range more modules can be series connected. Any topology can be used in this configuration if an isolation transformer is used in each module. In this configuration the input voltage is divided by the series connected input capacitors and the output is paralleled. The series connected converter experiences only divided input voltage so the device rating can be reduced. The input capacitors can be utilized as part of an input filter as shown in Fig.1. Fig.1 Input seriesoutput parallel connected converter configuration
2 In this system, there are two separate requirements for control: First, the load current must be shared equally by each outputparalleled module. Secondly, each inputseries module must share the input voltage equally. For the output current sharing, a current mode control can be used. However if the output current is controlled to be the same between the two modules for example, then even a slight mismatch in the transformer causes the input current imbalance and this fails the input voltage sharing. Thus, the average input current of each module must be controlled instead of the output current. For the forward type converter shown in Fig.2, the charge controller directly controls the average input current. Vg 114µH 1µF Vc2 12µF i in1 i in2 4 : µH 47. 7µH 42. 4mΩ 567. mω 3mΩ 22µF Vo. 25Ω the imbalance of the input capacitor voltage and the input capacitor voltage remains unbalanced. 2 1 Module #1 Inductor Current [A] Module #2 Inductor Current [A] Module #1 & #2 Input Capacitor Voltage [V] [sec] Fig.3 Simulation result of the charge capacitor mismatch 2 1 Module #1 Inductor Current [A] Module #2 Inductor Current [A] 2 d1 Mod# Module #1 & #2 Input Capacitor Voltage [V] 8 7 d2 Mod# [sec] Fig.4 Simulation result of the input capacitor mismatch III. CHARGE CONTROL WITH THE INPUT VOLTAGE FEEDACK Fig.2 Schematic of the input seriesoutput parallel connected forward converter with the charge control However, the conventional charge control scheme still has the following problems for the input voltage sharing. If the component value mismatches in the switch current sensing circuit and the charge capacitor,, the average input current can be mismatched, which eventually causes the input voltage imbalance. Fig.3 simulates this case with the twomodule forward converter system shown in Fig.2. In this simulation, there is 2% mismatch in the charge capacitors. As it is seen in this simulation, the imbalance in the input voltage causes the imbalance in the output current. Fig.4 illustrates the case where the value of the input voltage sharing capacitors is not perfectly matched. In this case the input capacitor voltage can be different during the transient. If the average input current of each module is the same, the voltage imbalance can never be fixed. Fig.4 simulates this case with the twomodule forward converter system shown in Fig.2. The initial input voltage is 13V and steps up to 15V at 2ms and the initial load current is 2A and steps down to 1A at 7ms. The 2% imbalance of the input capacitors causes In order to solve the problems discussed above, the charge control employing the input voltage feedback scheme is proposed as shown in Fig.5. Vc2 Vg Vc2 k*(vc2) k*(vc2) i in1 i in2 d1 d2 Mod#1 Mod#2 Input capacitor voltage difference k*(vc2) Input capacitor voltage difference k*(vc2) Vo Fig.5 Proposed charge control scheme
3 The input current of each module is adjusted according to the input capacitor voltage to achieve the voltage balance between the modules for all operating conditions. In this scheme, the input voltage difference is multiplied by a gain, k and this controls the offset voltage in the duty ratio modulator Module #2 Inductor Current [A] 2 1 Module #1 Inductor Current [A] Unbalanced Condition alanced Condition t on1 Module #1 k*(v1v2) Module #2 k*(v1v2) Module #1 & #2 Input Capacitor Voltage [V] [sec] Fig.7 Simulation result of the proposed scheme t on2 when V1 > V2 IV. SMALL SIGANL ANAYSIS Fig.6 alancing mechanism of the proposed method Fig.6 illustrates the balancing mechanism of the proposed method when v1 is higher than v2. ecause of the lowered offset voltage, k*(v1v2), module 1 input current increases and this increased input current makes input capacitor voltage decrease. On the other hand, module 2 input current decreases owing to the raised offset voltage, k*(v1v2), and this reduced input current makes input capacitor voltage increase. In this way v1 and v2 becomes equal and the power balance of two modules is accomplished. The amount of the difference in the input average current to balance the input voltage during the transient can be calculated by Eq.(1). Fig.8 shows the smallsignal equivalent circuit of a twomodule ISOP (input series output parallel) converter system. In this figure, all switches are replaced with its smallsignal PWM model [8]. Rp Lp C1 C2 1:N1 1:N2 I1dˆ1 ˆ2 I2d N1 dˆ1 D1 Vc2N2 dˆ2 D2 1:D1 1:D2 L1 L1 Rl1 Rl1 Rc C R I in max k = 2 C n T V t in max on (1) Fig.8 Small signal equivalent circuit model of ISOP system using PWM switch model where, V in max is the maximum of the input capacitor voltage difference, is the charge control capacitor, t on is the ontime of the switch, n is the turns ratio of current transformer and k is the gain of the differential amplifier of the input voltages. The higher the gain k, the larger I in max is, and lower the gain k makes I in max small but it takes longer time to reach the balanced steady state of the input capacitor voltages. Therefore, there must be a design tradeoff for the gain, k between the current rating of the converter and the settling time. Fig.7 shows the simulation result of the proposed scheme. There is 2% mismatch in the charge capacitor and in the input capacitor. The initial input voltage is 13V and steps up to 15V at 2ms and the initial load current is 2A and steps down to 1A at 7ms. As shown in this figure, to achieve the balance of the input capacitor voltage the input average currents are controlled to be different during the transient. The ISOP system uses input capacitor voltage as the control information for input capacitor voltage balancing. The input capacitor voltages adds new states to the system model and the overall small signal model can be completed adding this two input capacitor voltage feedback loop to the general two loop controlled parallel converter system. The overall small signal block diagram of the ISOP system including this control loop is shown in Fig.9. In Fig.9, Ri and FM are the equivalent current gain and the modulator gain, respectively. He(s) represents the sampledandhold effect in the current loop [9] and k represents the sensing gain of the input voltage difference. In order to obtain design information of the control loop for stability, it is necessary to simplify the system model in Fig.9. Since the system has additional input voltage feedback loops to the conventional current mode controlled parallel module system, the influence of the feedback loop is analyzed.
4 vˆ g ˆ Ggo Zo Gd2o vˆo ISOP system can be simplified to a equivalent single module, and its block diagram is shown in Fig.11. Where, Gd1o Gvc1 Gic1 Gd2c1 vˆc1 G dvo = 2G d1o, Ri ' = Ri / 2, G di = 2(G d1i1 G d2i1) (2) Gd1c1 Gvc2 Gic2 Gd2c2 Gd1c2 Gvi1 vˆc2 Hv vˆ g Gvgvo Zo Gdvo Vˆo Gii1 i în1 Gd2i1 Gd1i1 Gvi2 Gii2 Gd2i2 Gd1i2 iˆin 2 Ri2 k Ri1 He(s) k Gvgi Gioi Gdi î l Ri Tv Hv ˆd 2 dˆ 1 FM2 FM1 He(s) v c v c Fig.9 Overall small signal block diagram of ISOP system with input capacitor voltage feedback Fig.1 shows the transfer function from the control voltage, v c to the output voltage, v o (point ) in Fig.9 with and without the input capacitor voltage loop. As can be seen from this figure, the two plots are almost the same. This can be qualitatively interpreted as follows. Since amount of the input voltage feedback for each module is same but with opposite sign, there is a net canceling effect in the overall system. Phase (deg); Magnitude (d) Frequency (rad/sec) Fig.1 Transfer function from the control voltage to the output voltage with and without the input capacitor voltage feedback loop ( Gci ) Thus, we can conclude that the input capacitor voltage feedback loop has little effect on the control voltage to the output voltage transfer function at point. Then the FM Fig.11 Small signal block diagram of a equivalent singlemodule converter system V. CONTROL LOOP DESIGN The first step of the current loop design is to determine the charge control capacitor,. The voltage across, should not exceed the comparator supply voltage v cs. Thus, is chosen as follows [9]: C (3) 1 DmaxTs T > il, max vcs (t) dt FM, Ri and He(s) have the same expression as those in the conventional charge control [9]. The current loop gain, Ti in Fig.11 is then i G di Ti He T = Ri' He(s) FM (4) Ti can be used for the stability analysis of the current loop closed power stage. Once the current loop is designed, the current loop closed power stage can be treated as a new power stage for the voltage loop design(hv). The system loop gain defined at point is T = G H (5) ci v where, G ci is the transfer function from the control voltage, v c to the output voltage, v o with the current loop closed (new power stage) for a given operating conditions. Fig.1 shows G Ci, from which the voltage loop compensator, Hv can be designed. For Hv, an
5 integrator plus two poles and two zeros compensator is used. K I (1 s / ω z1 ) H v (s) = (6) s (1 s / ω ) p1 Fig. 12 shows the designed loop gain T, which has a wide control bandwidth with an appropriate phase margin. of the mismatches of the component values between the modules. Employing the charge control, the input average currents are controlled to be the same therefore the voltage imbalance is not fixed after the input voltage mismatch occurs. So the supplying power of two modules is unbalanced and one module suffers more stress than the other and this worsens the system reliability. 1 5 Phase (deg); Magnitude (d) o φ M = Frequency (rad/sec) Fig.12 Outer loop gain IV. EXPERIMENTAL RESULT T after the compensation To verify the effectiveness of the proposed control scheme, hardware experiments are performed. The experimental setup is the same as that of the previous simulation cases. Fig.13 shows an experimental result employing the conventional charge control scheme. Fig.14 Experimental wave forms with proposed charge control scheme, [25V/div], [.5s/div] Ch1, Ch2: input capacitor voltages of module #1, #2 Fig.14 shows an experimental result employing the proposed charge control scheme with the input voltage feed forward. The experimental condition is the same as that of Fig.13. In both the steady and transient states the perfect balance of the input capacitor voltages is achieved by the proposed control scheme. So the power balance between the two modules is accomplished by the proposed control scheme and the voltage stress is equally divided between the two modules. Fig.15 shows an expanded view of the input capacitor voltages and the inductor currents of the two modules during the input voltage step change. Fig.13 Experimental wave forms with conventional charge control scheme, [25V/div], [.5s/div] Ch1, Ch2: input capacitor voltage of module #1, #2 The input voltage steps up at 1.5s from 13V to 15V, steps down at 2.5s to 12V and steps up at 3.5s to 13V. The input capacitor of module #2 is 2% greater than that of module #1. The input voltage variation of module #1 during the transients, is greater than that of module #2 because of the smaller input capacitor. In the figure input voltage mismatch is observed not only in the steady state but also during the transients because Fig.15 Experimental wave forms with proposed charge control scheme, [25V/div], [5A/div], [5ms/div] Ch1, Ch2: input capacitor voltages of module #1, #2 Ch3, Ch4: inductor currents of module #1, #2
6 The input voltage steps up from 13V to 15V at 1ms. ecause the input capacitor of module #1 is smaller, the input capacitor voltage of module #1 goes higher than that of module #2. To balance the input capacitor voltage the proposed charge controller increases the input average current of module #1 and decreases the input average current of module #2.The current waveforms in Fig.15 verify the canceling effect for the output voltage control loop as discussed in section IV. In the figure the inductor currents are plotted instead of input average currents for the displaying convenience. There is about 2A difference between the inductor currents of the two modules to balance the input capacitor voltages. V. CONCLUSION In this paper, the charge control with the input voltage feed forward is proposed for the input seriesoutput parallel connected converter configuration for highvoltage power conversion applications. This control scheme accomplishes the output current sharing for the outputparallel connected modules as well as the input voltage sharing for the inputseries connected modules for all operating conditions including the transients. It also offers the robustness for the input voltage sharing control according to the component value mismatches among the modules. The small signal analysis shows that an equivalent single module system can be used for the control loop design process in spite of the input capacitor voltage feedback loop. The performance of the proposed scheme is verified through the experimental results. REFERENCES 1. Christian Gerster, Fast Highpower/Highvoltage Switch Using Seriesconnected IGTs with Active Gate Controlled Voltagebalancing, APEC 94 Proc., pp A. Consoli, S. Musumeci, G. Oriti and A. Testa, Active Voltage alancement of Series Connected IGTs, IAS 95 Proc., pp M.M.akran and M.Michel, A Learning Controller for Voltagealancing on GTOs in Series, IPEC 95 Proc., pp C. Gerster, P. Hofer and N. Karrer, Gatecontrol strategies for snubberless operation of series connected IGTs, PESC 96 Proc., pp N. H. Kutkut, G. Luckjiff and D. M. Divan, A Dual ridge High Current DCtoDC Converter with Soft Switching Capability, IAS 97 Proc., pp K. Siri, C. Q. Lee and T. F. Wu, Current Distribution Control for Parallel Connected Converters: Part 1, IEEE Trans. on Aerospace and Electronic Systems, Vol. 28, No. 3, July 1992, pp J. Masserant, E. W. eans and T. A. Stuart, A Study of Volume vs. Frequency for Soft Switching Converters, PESC 92 Proc. pp V. Vorperian, Simplified analysis of PWM converters using the model of the PWM switch:part I and II, IEEE Trans. on Aerospace and Electronic Systems, Vol 26, No.3, 199, pp Wei Tang, F.C.Lee, R..Ridley and I. Cohen, Charge control: modeling, analysis and design, IEEE Trans. on Power Electronics, Vol. 8, No.4, Oct. 1993, pp
1462 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 19, NO. 6, NOVEMBER Raja Ayyanar, Member, IEEE, Ramesh Giri, and Ned Mohan, Fellow, IEEE
1462 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 19, NO. 6, NOVEMBER 2004 Active Input Voltage and Load Current Sharing in Input-Series and Output-Parallel Connected Modular DC DC Converters Using Dynamic
More informationDigital Control Strategy for Input-Series-Output-Parallel Modular DC/DC Converters
Digital Control Strategy for Input-Series-Output-Parallel Modular DC/DC Converters 245 JPE 10-3-4 Digital Control Strategy for Input-Series-Output-Parallel Modular DC/DC Converters Deshang Sha, Zhiqiang
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 informationCHAPTER 3. SINGLE-STAGE PFC TOPOLOGY GENERALIZATION AND VARIATIONS
CHAPTER 3. SINGLE-STAGE PFC TOPOLOG GENERALIATION AND VARIATIONS 3.1. INTRODUCTION The original DCM S 2 PFC topology offers a simple integration of the DCM boost rectifier and the PWM DC/DC converter.
More informationChapter 2 MODELING AND CONTROL OF PEBB BASED SYSTEMS
Chapter 2 MODELING AND CONTROL OF PEBB BASED SYSTEMS 2.1 Introduction The PEBBs are fundamental building cells, integrating state-of-the-art techniques for large scale power electronics systems. Conventional
More informationA Novel Technique to Reduce the Switching Losses in a Synchronous Buck Converter
A Novel Technique to Reduce the Switching Losses in a Synchronous Buck Converter A. K. Panda and Aroul. K Abstract--This paper proposes a zero-voltage transition (ZVT) PWM synchronous buck converter, which
More informationAn Accurate and Practical Small-Signal Model for Current-Mode Control
An Accurate and Practical Small-Signal Model for Current-Mode Control ABSTRACT Past models of current-mode control have sufferered from either insufficient accuracy to properly predict the effects of current-mode
More informationA Novel Concept in Integrating PFC and DC/DC Converters *
A Novel Concept in Integrating PFC and DC/DC Converters * Pit-Leong Wong and Fred C. Lee Center for Power Electronics Systems The Bradley Department of Electrical and Computer Engineering Virginia Polytechnic
More informationInternational Journal of Advanced Scientific Technologies in Engineering and Management Sciences (IJASTEMS-ISSN: X)
Input Series Output Parallel DC-DC Converters For Fuel Cell With BESS Application 1. B.PRASUNA,PG Student,2.C.Balachandra Reddy,Professor&HOD Department of EEE,CBTVIT,Hyderabad Abstract - Input-series-output-parallel
More informationMODERN switching power converters require many features
IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 19, NO. 1, JANUARY 2004 87 A Parallel-Connected Single Phase Power Factor Correction Approach With Improved Efficiency Sangsun Kim, Member, IEEE, and Prasad
More informationBUCK Converter Control Cookbook
BUCK Converter Control Cookbook Zach Zhang, Alpha & Omega Semiconductor, Inc. A Buck converter consists of the power stage and feedback control circuit. The power stage includes power switch and output
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 informationHigh-Conversion-Ratio Switched-Capacitor Step-Up DC-DC Converter
High-Conversion-Ratio Switched-Capacitor Step-Up DC-DC Converter Yuen-Haw Chang and Chen-Wei Lee Abstract A closed-loop scheme of high-conversion-ratio switched-capacitor (HCRSC) converter is proposed
More informationSingle-Wire Current-Share Paralleling of Current-Mode-Controlled DC Power Supplies
780 IEEE TRANSACTION ON INDUSTRIAL ELECTRONICS, VOL. 47, NO. 4, AUGUST 2000 Single-Wire Current-Share Paralleling of Current-Mode-Controlled DC Power Supplies Chang-Shiarn Lin and Chern-Lin Chen, Senior
More informationDesign of High-efficiency Soft-switching Converters for High-power Microwave Generation
Journal of the Korean Physical Society, Vol. 59, No. 6, December 2011, pp. 3688 3693 Design of High-efficiency Soft-switching Converters for High-power Microwave Generation Sung-Roc Jang and Suk-Ho Ahn
More informationBidirectional Ac/Dc Converter with Reduced Switching Losses using Feed Forward Control
Bidirectional Ac/Dc Converter with Reduced Switching Losses using Feed Forward Control Lakkireddy Sirisha Student (power electronics), Department of EEE, The Oxford College of Engineering, Abstract: The
More informationChapter 3 : Closed Loop Current Mode DC\DC Boost Converter
Chapter 3 : Closed Loop Current Mode DC\DC Boost Converter 3.1 Introduction DC/DC Converter efficiently converts unregulated DC voltage to a regulated DC voltage with better efficiency and high power density.
More informationPeak Current Mode Control Stability Analysis & Design. George Kaminski Senior System Application Engineer September 28, 2018
Peak Current Mode Control Stability Analysis & Design George Kaminski Senior System Application Engineer September 28, 208 Agenda 2 3 4 5 6 7 8 Goals & Scope Peak Current Mode Control (Peak CMC) Modeling
More informationHigh-Gain Serial-Parallel Switched-Capacitor Step-Up DC-DC Converter
High-Gain Serial-Parallel Switched-Capacitor Step-Up DC-DC Converter Yuen-Haw Chang and Song-Ying Kuo Abstract A closed-loop scheme of high-gain serial-parallel switched-capacitor step-up converter (SPSCC)
More informationThe Effect of Ripple Steering on Control Loop Stability for a CCM PFC Boost Converter
The Effect of Ripple Steering on Control Loop Stability for a CCM PFC Boost Converter Fariborz Musavi, Murray Edington Department of Research, Engineering Delta-Q Technologies Corp. Burnaby, BC, Canada
More informationScientific Journal Impact Factor: (ISRA), Impact Factor: 1.852
IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY Average Current-Mode Control with Leading Phase Admittance Cancellation Principle for Single Phase AC-DC Boost converter Mukeshkumar
More informationFlexible dv=dt and di=dt Control Method for Insulated Gate Power Switches
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 39, NO. 3, MAY/JUNE 2003 657 Flexible dv=dt and di=dt Control Method for Insulated Gate Power Switches Shihong Park, Student Member, IEEE, and Thomas M.
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 informationis demonstrated by considering the conduction resistances and their voltage drop in DCM. This paper presents DC and small-signal circuit models of the
Average Model of Boost Converter, including Parasitics, operating in Discontinuous Conduction Mode (DCM) Haytham Abdelgawad and Vijay Sood Faculty of Engineering and Applied Science, University of Ontario
More informationPower supplies are one of the last holdouts of true. The Purpose of Loop Gain DESIGNER SERIES
DESIGNER SERIES Power supplies are one of the last holdouts of true analog feedback in electronics. For various reasons, including cost, noise, protection, and speed, they have remained this way in the
More informationREDUCED SWITCHING LOSS AC/DC/AC CONVERTER WITH FEED FORWARD CONTROL
REDUCED SWITCHING LOSS AC/DC/AC CONVERTER WITH FEED FORWARD CONTROL Avuluri.Sarithareddy 1,T. Naga durga 2 1 M.Tech scholar,lbr college of engineering, 2 Assistant professor,lbr college of engineering.
More informationLinear Peak Current Mode Controlled Non-inverting Buck-Boost Power-Factor-Correction Converter
Linear Peak Current Mode Controlled Non-inverting Buck-Boost Power-Factor-Correction Converter Mr.S.Naganjaneyulu M-Tech Student Scholar Department of Electrical & Electronics Engineering, VRS&YRN College
More informationIncreasing Performance Requirements and Tightening Cost Constraints
Maxim > Design Support > Technical Documents > Application Notes > Power-Supply Circuits > APP 3767 Keywords: Intel, AMD, CPU, current balancing, voltage positioning APPLICATION NOTE 3767 Meeting the Challenges
More informationSimulation Of A Three Level Boosting PFC With Sensorless Capacitor Voltage Balancing Control
Simulation Of A Three Level Boosting PFC With Sensorless Capacitor Voltage Balancing Control 1. S.DIVYA,PG Student,2.C.Balachandra Reddy,Professor&HOD Department of EEE,CBTVIT,Hyderabad Abstract - Compared
More informationAnalysis, Design, and Performance Evaluation of Droop Current-Sharing Method
Analysis, Design, and Performance Evaluation of Droop CurrentSharing Method Brian T. Irving and Milan M. Jovanović Delta Products Corporation Power Electronics Laboratory P.. Box 1173 5101 Davis Drive
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 informationDept. of Electrical Engineering, Korea Advanced Institute of Science and Technology. Fig. 1 Circiut schematic of single phase RPI
THREE PHASE SINE WAVE VOLTAGE SOURCE INVERTER USING THE SOFT SWITCHED RESONANT POLES Jung G. Cho, Dong Y. Hu and Gyu H. Cho Dept. of Electrical Engineering, Korea Advanced Institute of Science and Technology
More informationDESIGN AND IMPLEMENTATION OF TWO PHASE INTERLEAVED DC-DC BOOST CONVERTER WITH DIGITAL PID CONTROLLER
DESIGN AND IMPLEMENTATION OF TWO PHASE INTERLEAVED DC-DC BOOST CONVERTER WITH DIGITAL PID CONTROLLER H. M. MALLIKARJUNA SWAMY 1, K.P.GURUSWAMY 2, DR.S.P.SINGH 3 1,2,3 Electrical Dept.IIT Roorkee, Indian
More informationMETHODS TO IMPROVE DYNAMIC RESPONSE OF POWER FACTOR PREREGULATORS: AN OVERVIEW
METHODS TO IMPROE DYNAMIC RESPONSE OF POWER FACTOR PREREGULATORS: AN OERIEW G. Spiazzi*, P. Mattavelli**, L. Rossetto** *Dept. of Electronics and Informatics, **Dept. of Electrical Engineering University
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 informationEFFICIENT DRIVER DESIGN FOR AMOLED DISPLAYS
EFFICIENT DRIVER DESIGN FOR AMOLED DISPLAYS CH. Ganesh and S. Satheesh Kumar Department of SENSE (VLSI Design), VIT University, Vellore India E-Mail: chokkakulaganesh@gmail.com ABSTRACT The conventional
More informationGetting the Most From Your Portable DC/DC Converter: How To Maximize Output Current For Buck And Boost Circuits
Getting the Most From Your Portable DC/DC Converter: How To Maximize Output Current For Buck And Boost Circuits Upal Sengupta, Texas nstruments ABSTRACT Portable product design requires that power supply
More informationCHAPTER 2 DESIGN AND MODELING OF POSITIVE BUCK BOOST CONVERTER WITH CASCADED BUCK BOOST CONVERTER
17 CHAPTER 2 DESIGN AND MODELING OF POSITIVE BUCK BOOST CONVERTER WITH CASCADED BUCK BOOST CONVERTER 2.1 GENERAL Designing an efficient DC to DC buck-boost converter is very much important for many real-time
More informationAN294. Si825X FREQUENCY COMPENSATION SIMULATOR FOR D IGITAL BUCK CONVERTERS
Si825X FREQUENCY COMPENSATION SIMULATOR FOR D IGITAL BUCK CONVERTERS Relevant Devices This application note applies to the Si8250/1/2 Digital Power Controller and Silicon Laboratories Single-phase POL
More informationAdvances in Averaged Switch Modeling
Advances in Averaged Switch Modeling Robert W. Erickson Power Electronics Group University of Colorado Boulder, Colorado USA 80309-0425 rwe@boulder.colorado.edu http://ece-www.colorado.edu/~pwrelect 1
More informationThe Technology Behind the World s Smallest 12V, 10A Voltage Regulator
The Technology Behind the World s Smallest 12V, 10A Voltage Regulator A low profile voltage regulator achieving high power density and performance using a hybrid dc-dc converter topology Pradeep Shenoy,
More informationEVALUATION KIT AVAILABLE 28V, PWM, Step-Up DC-DC Converter PART V IN 3V TO 28V
19-1462; Rev ; 6/99 EVALUATION KIT AVAILABLE 28V, PWM, Step-Up DC-DC Converter General Description The CMOS, PWM, step-up DC-DC converter generates output voltages up to 28V and accepts inputs from +3V
More informationProceedings of the 7th WSEAS International Conference on CIRCUITS, SYSTEMS, ELECTRONICS, CONTROL and SIGNAL PROCESSING (CSECS'08)
Multistage High Power Factor Rectifier with passive lossless current sharing JOSE A. VILLAREJO, ESTHER DE JODAR, FULGENCIO SOTO, JACINTO JIMENEZ Department of Electronic Technology Polytechnic University
More informationFuzzy Controlled Capacitor Voltage Balancing Control for a Three Level Boost Converter
Fuzzy Controlled Capacitor Voltage Balancing Control for a Three evel Boost Converter Neethu Rajan 1, Dhivya Haridas 2, Thanuja Mary Abraham 3 1 M.Tech student, Electrical and Electronics Engineering,
More informationD-Σ Digital Control for Improving Stability Margin under High Line Impedance
D-Σ Digital Control for Improving Stability Margin under High Line Impedance Tsai-Fu Wu Professor, National Tsing Hua University, Taiwan Elegant Power Electronics Applied Research Laboratory (EPEARL) Aug.
More informationSIMULATION WITH THE CUK TOPOLOGY ECE562: Power Electronics I COLORADO STATE UNIVERSITY. Modified in Fall 2011
SIMULATION WITH THE CUK TOPOLOGY ECE562: Power Electronics I COLORADO STATE UNIVERSITY Modified in Fall 2011 ECE 562 Cuk Converter (NL5 Simulation) Laboratory Page 1 PURPOSE: The purpose of this lab is
More informationIMPROVING THE VOLTAGE GAIN OF DC- DC BOOST CONVERTER BY COUPLED INDUCTOR
IMPROVING THE VOLTAGE GAIN OF DC- DC BOOST CONVERTER BY COUPLED INDUCTOR YENISETTI NEELIMA 1 1 ASST PROF CJIT JANGAON. Abstract The high gain DC-DC converter with coupling inductor is design to boost low
More informationComparison and Simulation of Full Bridge and LCL-T Buck DC-DC Converter Systems
Comparison and Simulation of Full Bridge and LCL-T Buck DC-DC Converter Systems A Mallikarjuna Prasad 1, B Gururaj 2 & S Sivanagaraju 3 1&2 SJCET, Yemmiganur, Kurnool, India 3 JNTU Kakinada, Kakinada,
More informationOne-Cycle Control of Interleaved Buck Converter with Improved Step- Down Conversion Ratio
International Research Journal of Engineering and Technology (IRJET) e-issn: 39- Volume: Issue: 9 Dec-1 www.irjet.net p-issn: 39-7 One-Cycle Control of Interleaved Buck Converter with Improved Step- Down
More informationA Three-Phase AC-AC Buck-Boost Converter using Impedance Network
A Three-Phase AC-AC Buck-Boost Converter using Impedance Network Punit Kumar PG Student Electrical and Instrumentation Engineering Department Thapar University, Patiala Santosh Sonar Assistant Professor
More informationStability and Dynamic Performance of Current-Sharing Control for Paralleled Voltage Regulator Modules
172 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 17, NO. 2, MARCH 2002 Stability Dynamic Performance of Current-Sharing Control for Paralleled Voltage Regulator Modules Yuri Panov Milan M. Jovanović, Fellow,
More informationCHAPTER 3 APPLICATION OF THE CIRCUIT MODEL FOR PHOTOVOLTAIC ENERGY CONVERSION SYSTEM
63 CHAPTER 3 APPLICATION OF THE CIRCUIT MODEL FOR PHOTOVOLTAIC ENERGY CONVERSION SYSTEM 3.1 INTRODUCTION The power output of the PV module varies with the irradiation and the temperature and the output
More informationChapter 13 Oscillators and Data Converters
Chapter 13 Oscillators and Data Converters 13.1 General Considerations 13.2 Ring Oscillators 13.3 LC Oscillators 13.4 Phase Shift Oscillator 13.5 Wien-Bridge Oscillator 13.6 Crystal Oscillators 13.7 Chapter
More informationDesigning A SEPIC Converter
Designing A SEPIC Converter Introduction In a SEPIC (Single Ended Primary Inductance Converter) design, the output voltage can be higher or lower than the input voltage. The SEPIC converter shown in Figure
More informationModified Resonant Transition Switching for Buck Converter
Modified Resonant Transition Switching for Buck Converter Derick Mathew*, Mohanraj M*, Midhun Raju** *Power Electronics and Drives, Karunya University, Coimbatore, India **Renewable Energy Technologies,
More informationDC-DC Resonant converters with APWM control
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) ISSN: 2278-1676 Volume 2, Issue 5 (Sep-Oct. 2012), PP 43-49 DC-DC Resonant converters with APWM control Preeta John 1 Electronics Department,
More informationLecture 41 SIMPLE AVERAGING OVER T SW to ACHIEVE LOW FREQUENCY MODELS
Lecture 41 SIMPLE AVERAGING OVER T SW to ACHIEVE LOW FREQUENCY MODELS. Goals and Methodology to Get There 0. Goals 0. Methodology. BuckBoost and Other Converter Models 0. Overview of Methodology 0. Example
More informationAnother Compensator Design Example
Another Compensator Design Example + V g i L (t) + L + _ f s = 1 MHz Dead-time control PWM 1/V M duty-cycle command Compensator G c c( (s) C error Point-of-Load Synchronous Buck Regulator + I out R _ +
More informationDesign and Simulation of New Efficient Bridgeless AC- DC CUK Rectifier for PFC Application
Design and Simulation of New Efficient Bridgeless AC- DC CUK Rectifier for PFC Application Thomas Mathew.T PG Student, St. Joseph s College of Engineering, C.Naresh, M.E.(P.hd) Associate Professor, St.
More informationDESIGN OF SENSORLESS CAPACITOR VOLTAGE BALANCING CONTROL FOR THREE-LEVEL BOOSTING PFC WITH PV SYSTEM
DESIGN OF SENSORLESS CAPACITOR VOLTAGE BALANCING CONTROL FOR THREE-LEVEL BOOSTING PFC WITH PV SYSTEM 1 T.Ramalingaiah, 2 G.Sunil Kumar 1 PG Scholar (EEE), 2 Assistant Professor ST. Mary s Group of Institutions
More informationDepartment of EEE, SCAD College of Engineering and Technology, Tirunelveli, India, #
IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY CURRENT BALANCING IN MULTIPHASE CONVERTER BASED ON INTERLEAVING TECHNIQUE USING FUZZY LOGIC C. Dhanalakshmi *, A. Saravanan, R.
More informationEK307 Active Filters and Steady State Frequency Response
EK307 Active Filters and Steady State Frequency Response Laboratory Goal: To explore the properties of active signal-processing filters Learning Objectives: Active Filters, Op-Amp Filters, Bode plots Suggested
More informationNegative Output Multiple Lift-Push-Pull Switched Capacitor for Automotive Applications by Using Soft Switching Technique
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-issn: 2278-1676,p-ISSN: 232-3331 PP 4-44 www.iosrjournals.org Negative Output Multiple Lift-Push-Pull Switched Capacitor for Automotive
More informationCurrent Rebuilding Concept Applied to Boost CCM for PF Correction
Current Rebuilding Concept Applied to Boost CCM for PF Correction Sindhu.K.S 1, B. Devi Vighneshwari 2 1, 2 Department of Electrical & Electronics Engineering, The Oxford College of Engineering, Bangalore-560068,
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 informationParalleling of LLC Resonant Converters using Frequency Controlled Current Balancing
PESC8, Rhodes, Greece Paralleling of LLC Resonant Converters using Frequency Controlled Current Balancing H. Figge *, T. Grote *, N. Froehleke *, J. Boecker * and P. Ide ** * University of Paderborn, Power
More information5. Active Conditioning for a Distributed Power System
5. Active Conditioning for a Distributed Power System 5.1 The Concept of the DC Bus Conditioning 5.1.1 Introduction In the process of the system integration, the greatest concern is the dc bus stability
More informationSimulation of Improved Dynamic Response in Active Power Factor Correction Converters
Simulation of Improved Dynamic Response in Active Power Factor Correction Converters Matada Mahesh 1 and A K Panda 2 Abstract This paper introduces a novel method in improving the dynamic response of active
More informationACONTROL technique suitable for dc dc converters must
96 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 12, NO. 1, JANUARY 1997 Small-Signal Analysis of DC DC Converters with Sliding Mode Control Paolo Mattavelli, Member, IEEE, Leopoldo Rossetto, Member, IEEE,
More informationCHAPTER 7. Response of First-Order RL and RC Circuits
CHAPTER 7 Response of First-Order RL and RC Circuits RL and RC Circuits RL (resistor inductor) and RC (resistor-capacitor) circuits. Figure 7.1 The two forms of the circuits for natural response. (a) RL
More informationChapter 2. Operational Amplifiers
Chapter 2. Operational Amplifiers Tong In Oh 1 2.5 Integrators and Differentiators Utilized resistors in the op-amp feedback and feed-in path Ideally independent of frequency Use of capacitors together
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 informationA New Soft Recovery PWM Quasi-Resonant Converter With a Folding Snubber Network
456 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 49, NO. 2, APRIL 2002 A New Soft Recovery PWM Quasi-Resonant Converter With a Folding Snubber Network Jin-Kuk Chung, Student Member, IEEE, and Gyu-Hyeong
More informationHigh-Voltage Switch Using Series-Connected IGBTs With Simple Auxiliary Circuit
High-Voltage Switch Using Series-Connected IGBTs With Simple Auxiliary Circuit *Gaurav Trivedi ABSTRACT For high-voltage applications, the series operation of devices is necessary to handle high voltage
More informationNon-linear Control. Part III. Chapter 8
Chapter 8 237 Part III Chapter 8 Non-linear Control The control methods investigated so far have all been based on linear feedback control. Recently, non-linear control techniques related to One Cycle
More informationM.Tech in Industrial Electronics, SJCE, Mysore, 2 Associate Professor, Dept. of ECE, SJCE, Mysore
Implementation of Five Level Buck Converter for High Voltage Application Manu.N.R 1, V.Nattarasu 2 1 M.Tech in Industrial Electronics, SJCE, Mysore, 2 Associate Professor, Dept. of ECE, SJCE, Mysore Abstract-
More informationDual Active Bridge Converter
Dual Active Bridge Converter Amit Jain Peregrine Power LLC now with Intel Corporation Lecture : Operating Principles Sinusoidal Voltages Bi-directional transfer Lagging current V o V 0 P VV sin L jl 0
More informationSimplified loss analysis and comparison of full-bridge, full-range-zvs DC-DC converters
Sādhanā Vol. 33, Part 5, October 2008, pp. 481 504. Printed in India Simplified loss analysis and comparison of full-bridge, full-range-zvs DC-DC converters SHUBHENDU BHARDWAJ 1, MANGESH BORAGE 2 and SUNIL
More informationLM125 Precision Dual Tracking Regulator
LM125 Precision Dual Tracking Regulator INTRODUCTION The LM125 is a precision, dual, tracking, monolithic voltage regulator. It provides separate positive and negative regulated outputs, thus simplifying
More informationTuesday, March 29th, 9:15 11:30
Oscillators, Phase Locked Loops Tuesday, March 29th, 9:15 11:30 Snorre Aunet (sa@ifi.uio.no) Nanoelectronics group Department of Informatics University of Oslo Last time and today, Tuesday 29th of March:
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 informationMultilevel Boost DC-DC Converter Derived From Basic Double-Boost Converter
Multilevel Boost DC-DC Converter Derived From Basic Double-Boost Converter evy F. Costa, Samir A. Mussa, Ivo Barbi FEDERA UNIVERSITY OF SANTA CATARINA Power Electronic Institute - INEP Florianópolis, Brazil
More informationSTABILITY ANALYSIS OF PARALLELED SINGLE ENDED PRIMARY INDUCTANCE CONVERTERS
STABILITY ANALYSIS OF PARALLELED SINGLE ENDED PRIMARY INDUCTANCE CONVERTERS A. Ezhilarasi and M. Ramaswamy Department of Electrical Engineering, Annamalai University, Annamalainagar, Tamil Nadu, India
More informationGENERALIZED QUANTUM RESONANT CONVERTERS USING A NEW CONCEPTS OF QUANTUM RESONANT SWITCH
GENERALIZED QUANTUM RESONANT CONVERTERS USING A NEW CONCEPTS OF QUANTUM RESONANT SWITCH Gyu B. Joung, Juiig G. Cho and Gyu H. Cho Dept. of Electrical and Electronics Eng., Korea Advanced Institute of Science
More informationA Modified Single Phase Inverter Topology with Active Common Mode Voltage Cancellation
A Modified Single Phase Inverter Topology with Active Common Mode Voltage Cancellation A. Rao *, T.A. Lipo University of Wisconsin Madison 1415, Engineering Drive Madison, WI 53706, USA * Email: arao@cae.wisc.edu
More informationCore Technology Group Application Note 2 AN-2
Measuring power supply control loop stability. John F. Iannuzzi Introduction There is an increasing demand for high performance power systems. They are found in applications ranging from high power, high
More informationImproving the efficiency of PV Generation System Using Soft- Switching Boost Converter with SARC
International Journal of Engineering Research and Development e-issn: 2278-067X, p-issn: 2278-800X, www.ijerd.com Volume 3, Issue 10 (September 2012), PP. 35-46 Improving the efficiency of PV Generation
More informationSINGLE-STAGE HIGH-POWER-FACTOR SELF-OSCILLATING ELECTRONIC BALLAST FOR FLUORESCENT LAMPS WITH SOFT START
SINGLE-STAGE HIGH-POWER-FACTOR SELF-OSCILLATING ELECTRONIC BALLAST FOR FLUORESCENT S WITH SOFT START Abstract: In this paper a new solution to implement and control a single-stage electronic ballast based
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 informationLinear Regulators: Theory of Operation and Compensation
Linear Regulators: Theory of Operation and Compensation Introduction The explosive proliferation of battery powered equipment in the past decade has created unique requirements for a voltage regulator
More informationCable Compensation of a Primary-Side-Regulation (PSR) Power Supply
Lion Huang AN011 April 014 Cable Compensation of a Primary-Side-Regulation (PSR) Power Supply Abstract Cable compensation has been used to compensate the voltage drop due to cable impedance for providing
More informationIMPLEMENTATION OF FM-ZCS-QUASI RESONANT CONVERTER FED DC SERVO DRIVE
IMPLEMENTATION OF FM-ZCS-QUASI RESONANT CONVERTER FED DC SERVO DRIVE 1 K. NARASIMHA RAO, 2 DR V.C. VEERA REDDY 1 Research Scholar,Department of Electrictrical Engg,S V University, Tirupati, India 2 Professor,
More informationA ZCS-PWM Full-Bridge Boost Converter for Fuel-Cell Applications
A ZCS-PWM Full-Bridge Boost Converter for Fuel-Cell Applications Ahmad Mousavi, Pritam Das and Gerry Moschopoulos University of Western Ontario Department of Electrical and Computer Engineering Thompson
More informationNew Techniques for Testing Power Factor Correction Circuits
Keywords Venable, frequency response analyzer, impedance, injection transformer, oscillator, feedback loop, Bode Plot, power supply design, power factor correction circuits, current mode control, gain
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 informationUCC38C42 25-Watt Self-Resonant Reset Forward Converter Reference Design
Reference Design UCC38C42 25-Watt Self-Resonant Reset Forward Converter Reference Design UCC38C42 25-Watt Self-Resonant Reset Forward Converter Lisa Dinwoodie Power Supply Control Products Contents 1 Introduction.........................................................................
More informationThe UC3902 Load Share Controller and Its Performance in Distributed Power Systems
Application Report SLUA128A - May 1997 Revised January 2003 The UC3902 Load Share Controller and Its Performance in Distributed Power Systems Laszlo Balogh System Power ABSTRACT Users of distributed power
More informationModeling The Effects of Leakage Inductance On Flyback Converters (Part 2): The Average Model
ISSUE: December 2015 Modeling The Effects of Leakage Inductance On Flyback Converters (Part 2): The Average Model by Christophe Basso, ON Semiconductor, Toulouse, France In the first part of this article,
More informationA Lossless Clamp Circuit for Tapped-Inductor Buck Converters*
A Lossless Clamp Circuit for Tapped-Inductor Buck nverters* Kaiwei Yao, Jia Wei and Fred C. Lee Center for Power Electronics Systems The Bradley Department of Electrical and mputer Engineering Virginia
More informationDigital Controller Eases Design Of Interleaved PFC For Multi-kilowatt Converters
ISSUE: June 2017 Digital Controller Eases Design Of Interleaved PFC For Multi-kilowatt Converters by Rosario Attanasio, Giuseppe Di Caro, Sebastiano Messina, and Marco Torrisi, STMicroelectronics, Schaumburg,
More information