Nicolò Antonante Kristian Bergaplass Mumba Collins


 Abraham Lyons
 2 years ago
 Views:
Transcription
1 Norwegian University of Science and Technology TET4190 Power Electronics for Renewable Energy Miniproject 19 Power Electronics in Motor Drive Application Nicolò Antonante Kristian Bergaplass Mumba Collins October 28,
2 Contents 1 introduction 1 2 Theory Threephase Fullbridge Rectifier Threephase Transistor Based Inverter Asynchronous AC Motors Digital PWM Generation The TMS320F2812 DSP Assembly Code Triangular Wave Generation Sine Wave Generation Triangular  Sine Comparison PWM Generation for Threelegs Inverter Output PWM Waveform Energy Saving by Using Adjustable Speed Drives Introduction Fans Control Flow Control in Pumps Conclusions 17 6 References 18 2
3 List of Figures 1 Threephase diode rectifier Waveforms for the circuit in figure Threephase inverter (a) Threephase PWM waveforms (b) V LL1 (rms)/v d as a function of ma A typical torquespeed characteristic; V s and f are constant at their rated values Package and Pin Assignment of a TMS320F The Main section of the Assembly code The time between two interrupts is the time between the min and max value of the triangular wave The PWM modulation for the upper transistor Zoom no the PWM wave Complementary PWM signal for both the upper transistor (channel1) and the bottom transistor (channel2) Dead band between the two complementary PWM signals Dead band in the up/down transition Illustration of a fan system driven by a constant speed motor, a dumper is used to reduce the airflow Illustration of a fan system driven by adjustable speed motor Illustration of a pump system driven by constant speed motor, a throttle valve is used to control the liquid flow Illustration of a pump system driven by an adjustable speed motor
4 1 introduction The first intention of this project was to build and investigate a variable speed motor drive based on a 3phase IGBTbased inverter. However, due to unavailability of inverter boards at NTNU, this project will focus on the theoretical aspects of rectifiers, inverters, motors and digital Pulsewidth modulation (PWM) generation. Practical applications for adjustable speed drives will also be presented. PWM is a very efficient way of providing intermediate amounts of electrical power between fully on and fully off. PWM can be used to control several kinds of signals and applications. This report will focus on power delivery, and specifically speed regulation for electric motors. Regulating the speed using PWM dramatically increases efficiency, and the technology is relatively simple and inexpensive. This makes PWM a popular speedcontrolling technology. High frequency PWM power control systems are easily realizable with semiconductor switches. The major advantage of this kind of control system is that the switches are either off (no current conduction) or on (ideally no voltage drop across the switches). The main theoretical focus on this report will be the PWM, but the other parts of an adjustable speed drive (Threephase full bridge rectifier, Threephase transistor based inverter, asynchronous ac motor) will also be described briefly in the report. The focus on energy saving is increasing constantly worldwide. The last part of the report will discuss various practical applications for PWMcontrolled variable speed drives, and will focus on energy saving in such applications. 2 Theory 2.1 Threephase Fullbridge Rectifier In industrial applications where threephase ac voltages are available, it is preferable to use threephase rectifier circuits, because of lower ripple and higher powerhandling capability. A practical threephase rectifier circuit contains inductances on the ac side. For a more ideal approach we assume these inductances (L s ) to be zero, and replace the load on the dc side with a constant current, I d (Figure1). In the top group of diodes (D1, D3, D5), the diode with the highest potential will conduct, while the other two become reversed biased. Similar 1
5 Figure 1: Threephase diode rectifier in the lower group (D2, D4, D6), the diode with the lowest potential will conduct, while the other two will become reversed biased. The waveform for this idealized circuit is shown in figure 2. Figure 2b shows the output voltage V d, and the average output voltage can be calculated by using equation 1, V d0 = 1 π/3 π/6 ˆ π/6 2VLL cos(ωt)d(ωt) = 3 π 2VLL = 1.35V LL (1) where V LL is the is the rms value of the linetoline voltages. In a practical threephase diode rectifier where inductances (L s ) and a capacitor is included it is important to consider the current commutation process, distortion in the linecurrent waveform, harmonics, ripple and other practical issues. Many of these values can be calculated using tools as Fourier analysis, but computer simulation tools like PSpice are recommended to get more accurate results. 2
6 Figure 2: Waveforms for the circuit in figure Threephase Transistor Based Inverter In this project we want to control the speed of a 3phase motor drive. For this application, a threephase inverter is most commonly used. The most frequently used inverter circuit is shown in figure 3. In an idealized circuit, the output of each leg (A, B, C) depends only on V d and the switch status; the output voltage is independent of the output load current since one of the two switches in a leg is always on at any instant. Figure 3: Threephase inverter The objective in PWM threephase inverters is to shape and control the 3
7 threephase output voltages in magnitude and frequency with an essential constant input voltage V d. A triangular voltage waveform is compared with three sinusoidal control voltages to obtain balanced threephase output voltages (Figure 4). Figure 4: (a) Threephase PWM waveforms (b) V LL1 (rms)/v d as a function of ma Harmonics can be a problem in threephase inverters, and some considerations should be taken when designing and operating such an inverter. 2.3 Asynchronous AC Motors The induction motor is the means by which electrical energy is converted to the required mechanical energy that is useful to the process. The induction machine, especially the cage type is widely used because it is rugged, reliable, simple in construction and has low maintenance costs. When the stator terminals of an induction machine are supplied with a constant ac voltage, the magnetic field induced in the air gap rotates at a constant speed, P, called synchronous speed. This speed in rpm is given by: P = 120 f (2) p where f is the frequency of the applied voltage and p is the number of poles. 4
8 The rotor of the machine will rotate at a speed that is less than but related to the synchronous speed by a slip, s, given by The other relevant induction motor equations are: f sl = s P (3) V s k 1 φ ag f (4) T em = k 2 φ ag f sl (5) Figure 5: A typical torquespeed characteristic; V s and f are constant at their rated values. From the Figure 5 Induction Motor Torque  Speed characteristic and the two equations (4) and (5), it can be said that to control the speed of the induction motor the following should be varied: 1. Applied voltage magnitude 2. Applied voltage frequency 3. The ratio of V/f has be kept constant in order to operate in the constant torque region. Several methods of varying complexity and performance can be used to realize the above requirements such as: 5
9 4. PWM, pulse width modulation 5. CSI, current source inverter 6. VSI, voltage source inverter 7. FVD, flux vector control drive However, the converter described here will be limited to the first technique because of its simplicity. 3 Digital PWM Generation In order to generate the PWM signals to control the transistors of the inverter, we used a DSP. Therefore a digital implementation of the comparison between the triangular and the sine waves is needed. The DSP used in this project is the TMS320F2812 by Texas Instruments. The implementation of the PWM generation algorithm is written in Assembly. 3.1 The TMS320F2812 DSP This DSP by Texas Instruments is a quite advanced microprocessor with many features. The main characteristics are: ˆ ˆ ˆ ˆ 150Mhz core frequency 3.3V I/O 12Bit ADC with 16 channels 12 PWM output pins In Figure 6 we can see the TMS320F2812 package and pin assignment. We can easily find the position of the pins we need to use. Since we only need 6 PWM, one for each switch, we used only one of the two PWM sets. This DSP can be programmed both in Assembly or C languages. The first one is a low level language that allow to program an hardware device in a very efficient way, but is not portable to other device families. The second one, instead, is an higher level language that can be compiled to work on different devices. In our project we used an Assembly implementation of 6
10 Figure 6: Package and Pin Assignment of a TMS320F2812 the algorithm because this language allows us to control all the registers and data in the DSP. This way we can better understand how the algorithm works inside the microprocessor. 3.2 Assembly Code The Code used in this project is composed by a main body and different subroutines. When we start the program, the Main is launched. As we can see from Figure 7, this part of the code calls the subroutine initialize and then enters in an infinite loop. During this loop the system is basically in a waiting status and it operates parts of the algorithm only during interrupt calls. The initialize subroutine sets all data registers to zero and defines the Input/Output properties. 7
11 In our case it configures the six PWM pins that we want to use as outputs. During this subroutines, values of variables and time counters are also initialized. Figure 7: The Main section of the Assembly code 3.3 Triangular Wave Generation In order to generate a digital triangular wave, a free running counter can be used. What we have to do is to fix a maximum and a minimum value, then we can compare the current value in the counter with the max and min value. The counter will increase his value until it reaches the max, than it will decrease to the min and so on. Therefore, to set the amplitude of the triangle is sufficient to define the min e max value, while to set the period we have to specify how many clock cycles the counter has to wait before being increased/decreased by one step. Considering for example the clock frequency equal to 150MHz, it means a clock period T ck = 6.66ns. If we assume that the max value of the triangular wave form is V T rimax = 1024 h, where h is for hexadecimal, and the minimum is V T rimin = 0, it means the counter needs 4132 steps to rise to the max value. If we sets a step each clock cycle, we find that the period of the triangular waveform is T T ri = 2(T ck 4132) = 55us. If we want to increase T T ri we can simply set T step = kt ck, where k is the number of clock cycles the counter has to wait before increasing/decreasing its value. What we get is the following equation: T T ri = 2(T step n steps ) (6) 8
12 In this section the methodology used to generate a digital triangular waveform has been described. 3.4 Sine Wave Generation The generation of a sine waveform is a bit more complicated than the triangular one. In Assembly is not possible to calculate the values of a sine function, at least not in a simple way, therefore we have to generate the needed values with an external program, such as Matlab or Excel, and place them into a lookup table (LUT). In this project we used 128 values of the sine function calculated from 0 to 360, that means a step of 360 = 2.8. All 128 the values are between 1 and 1, so a 1.15 format would be the most accurate. We decided to use a 4.12 format because other variables in the code are in this format. This means 4bits for the integer part and 12bits for the decimal part. In order to change the amplitude of the sine wave it s sufficient to multiply all the values stored in the LUT for a constant. To modify the frequency, the procedure is a little bit more elaborated. First of all, the wave is generated reading sequentially a value from the LUT every time we generate an interrupt. This means that, if we want f s = 50Hz, we have to generate 128 interrupts in T s = 20ms, while if we want, for example, f s = 25Hz we have to generate 128 interrupts in T s = 40ms and so on. In both cases what we want is that the time between two interrupts is T int = T s (7) 128 Let s now see how an interrupt can be generated and how it s possible to vary T int. We can use a triangular wave, obtained with the method described in section 4.3, and a comparator register. An interrupt is generated each time the value in the counter reach the fixed maximum or minimum values. Changing these values is therefore possible to change the time between two consecutive interrupt. This idea is shown in Figure 8 Therefore, assuming the minimum value of the triangular wave equal zero, we can express T int as follow: T int = tri max T ck (8) where tri max is the maximum value of the triangular wave. We assumed one step each clock cycle. From equation (7) and (8) we get T s = 128(tri max T ck ) (9) 9
13 Figure 8: The time between two interrupts is the time between the min and max value of the triangular wave To set a desired value of T s we can find the corresponding tri max as tri max = 3.5 Triangular  Sine Comparison T s 128T ck (10) The generation of the Pulse Wave Modulation is obtained comparing the triangular wave with the sine. In order to do this comparison we need three steps: 1. multiply the sine for an amplitude factor 2. shift the sine to the mean value of the triangular wave 3. do the comparison between the current value of the sine and the one of the triangle The first step consist just in multiply the value of the LUT for a constant in order to get the desired amplitude of the sine. The second step is also easy, we just need to sum at each element of the LUT the mean value of the triangular. This is because we assumed that the triangular wave is all positive. For the last step we load the current values of the sine and the triangle in a register that will make the comparison. The PWM for the upper IGBT of the first leg of the inverter is generated setting an high logic 10
14 value (3.3V) on the corresponding PWM pin, while the sine is below the triangle.to generate the complementary signal for the bottom transistor of the same leg, we can just invert the PWM described above. There may be a problem using this method for the generation of the two complementary PWM. In fact, if both the switches are on at the same time, we have a short circuit on the supply bus. This can cause damages to the board and affect the output of the system. To avoid the possibility that both the upper and the bottom transistors of the same leg are simultaneously on, a dead band is introduced. This is just a delay between the instant in which the upper PWM goes down an the instant in which the bottom goes up. We set this delay symmetrically for the up/down and down/up transition. The dead band register is a feature available on the DSP used, so we just needed to set the right value in the Assembly code to get the desired delay. In our project we used a dead band equal 1.5us. 3.6 PWM Generation for Threelegs Inverter Since we have to control a threephase inverter, we need to generate complementary PWM signal for each of the three legs. To generate these signals we don t need to use three different implementations of the algorithm described above. We actually have two ways to do this: 1. three pointer method 2. two pointer method. In the first method we use three pointers, one for each phase, that points to sine values in the LUT 120 out of phase one from the other. In this way, every time we generate an interrupt, each pointer is moved by one position. Comparing the three value with the triangular wave we get the PWM modulation for all the three legs. The second way to generate these signals is less easy but more optimized. In fact, is possible to use just two pointers in the LUT 90 out of phase one from the other. By using a 2phase to 3phase transformation is possible to get the same information of the three pointer method with advantages in computational time and resources usage. In our code the second method is implemented. 3.7 Output PWM Waveform The following section shows some screenshots of the DSP output taken using an oscilloscope. 11
15 As we can see from Figure 9 we get a very well defined wave, as we expected from theory. Figure 9: The PWM modulation for the upper transistor. A zoom on the rectangular wave better shows the variation in the duration of high and low status. Figure 10: Zoom no the PWM wave. 12
16 The next screenshot shows both the PWM for the upper transistor (channel1) and the PWM for the bottom one (channel2). Figure 11: Complementary PWM signal for both the upper transistor (channel1) and the bottom transistor (channel2). In Figure 12 is possible to clearly see the dead band between the upper and bottom PWM signals. As expected from theory the delay is 1.5us. Figure 12: Dead band between the two complementary PWM signals. 13
17 The same delay is symmetrically present also in the up/down transition as shown in Figure 13. Figure 13: Dead band in the up/down transition. 4 Energy Saving by Using Adjustable Speed Drives 4.1 Introduction Nowadays reduction in power consumption and energy saving are two keywords in research and industrial development. Reduce energy used in a process results in fact in a lower environmental impact and in money saving. In many industrial application, adjustable speed can be used to achieve a significant reduction in power consumption. Fans and pumps are typical examples of how it s possible to save energy controlling the speed of the motor. In this section examples of speed control application are presented. 4.2 Fans Control Fans are widely used industry, for example in cooling systems and in air ventilation. When a fan is driven by a fixed speed motor, the airflow may sometimes be higher than the needed. In this case, a damper can be used to restrict the flow and reduce the airflow to the desired value. 14
18 Figure 14: Illustration of a fan system driven by a constant speed motor, a dumper is used to reduce the airflow. This is, of course, a not efficient way to control the airflow. It s clear how, in this system, an adaptive speed control could match dynamically the airflow requirement and eliminate the waist of energy. Figure 15: Illustration of a fan system driven by adjustable speed motor. 4.3 Flow Control in Pumps The same idea presented for fans can be applied to pumps. Consider a simple pump operating at a fixed value. Since the motor speed is constant, in order to reduce the liquid flow is possible to partially close a throttling valve placed on the outflow. This introduces necessarily a loss of energy across the control valve. 15
19 Figure 16: Illustration of a pump system driven by constant speed motor, a throttle valve is used to control the liquid flow. The waist of energy can be avoided by eliminating the throttling valve and using an adjustable speed control to maintain the requested flow rate. Figure 17: Illustration of a pump system driven by an adjustable speed motor. 16
20 5 Conclusions ˆ Reviewed the main concepts of sinusoidal PWM technique. ˆ ˆ ˆ Reviewed the use of DSP technology in implementing the PWM technique. Discussed the energy savings due to use of motor speed control using techniques such as PWM and power electronic converters Demonstrated how to shape and control the PWM signals to the inverter switches. 17
21 6 References 1. N. Mohan, T. M. Undeland, W. P. Robbins, Power Electronics. Converters, Application and Design, 2nd ed., Jhon Wiley & Sons 2. Figures number 14 and 16 from http : //en.wikipedia.org/wiki/adjustable speed drive 3. Assembly code by Anandarup Das 4. Data sheet of the TMS320F2812 DSP from Texas Instruments website ( 18
Module 7. Electrical Machine Drives. Version 2 EE IIT, Kharagpur 1
Module 7 Electrical Machine Drives Version 2 EE IIT, Kharagpur 1 Lesson 34 Electrical Actuators: Induction Motor Drives Version 2 EE IIT, Kharagpur 2 Instructional Objectives After learning the lesson
More informationCHAPTER 4 CONTROL ALGORITHM FOR PROPOSED HBRIDGE MULTILEVEL INVERTER
65 CHAPTER 4 CONTROL ALGORITHM FOR PROPOSED HBRIDGE MULTILEVEL INVERTER 4.1 INTRODUCTION Many control strategies are available for the control of IMs. The Direct Torque Control (DTC) is one of the most
More informationThree Phase Induction Motor Drive Using Single Phase Inverter and Constant V/F method
Three Phase Induction Motor Drive Using Single Phase Inverter and Constant V/F method Nitin Goel 1, Shashi yadav 2, Shilpa 3 Assistant Professor, Dept. of EE, YMCA University of Science & Technology, Faridabad,
More informationUNITIII STATOR SIDE CONTROLLED INDUCTION MOTOR DRIVE
UNITIII STATOR SIDE CONTROLLED INDUCTION MOTOR DRIVE 3.1 STATOR VOLTAGE CONTROL The induction motor 'speed can be controlled by varying the stator voltage. This method of speed control is known as stator
More informationEE POWER ELECTRONICS UNIT IV INVERTERS
EE6503  POWER ELECTRONICS UNIT IV INVERTERS PART A 1. Define harmonic distortion factor? (N/D15) Harmonic distortion factor is the harmonic voltage to the fundamental voltage. 2. What is CSI? (N/D12)
More informationCHAPTERIII MODELING AND IMPLEMENTATION OF PMBLDC MOTOR DRIVE
CHAPTERIII MODELING AND IMPLEMENTATION OF PMBLDC MOTOR DRIVE 3.1 GENERAL The PMBLDC motors used in low power applications (up to 5kW) are fed from a singlephase AC source through a diode bridge rectifier
More informationCHAPTER 2 CURRENT SOURCE INVERTER FOR IM CONTROL
9 CHAPTER 2 CURRENT SOURCE INVERTER FOR IM CONTROL 2.1 INTRODUCTION AC drives are mainly classified into direct and indirect converter drives. In direct converters (cycloconverters), the AC power is fed
More informationAC Drive Technology. An Overview for the Converting Industry. Siemens Industry, Inc All rights reserved.
AC Drive Technology An Overview for the Converting Industry www.usa.siemens.com/converting Siemens Industry, Inc. 2016 All rights reserved. Answers for industry. AC Drive Technology Drive Systems AC Motors
More informationCHAPTER 3 VOLTAGE SOURCE INVERTER (VSI)
37 CHAPTER 3 VOLTAGE SOURCE INVERTER (VSI) 3.1 INTRODUCTION This chapter presents speed and torque characteristics of induction motor fed by a new controller. The proposed controller is based on fuzzy
More informationANALYSIS OF EFFECTS OF VECTOR CONTROL ON TOTAL CURRENT HARMONIC DISTORTION OF ADJUSTABLE SPEED AC DRIVE
ANALYSIS OF EFFECTS OF VECTOR CONTROL ON TOTAL CURRENT HARMONIC DISTORTION OF ADJUSTABLE SPEED AC DRIVE KARTIK TAMVADA Department of E.E.E, V.S.Lakshmi Engineering College for Women, Kakinada, Andhra Pradesh,
More informationA Switched Boost Inverter Fed Three Phase Induction Motor Drive
A Switched Boost Inverter Fed Three Phase Induction Motor Drive 1 Riya Elizabeth Jose, 2 Maheswaran K. 1 P.G. student, 2 Assistant Professor 1 Department of Electrical and Electronics engineering, 1 Nehru
More informationInternational Journal of Advance Engineering and Research Development
Scientific Journal of Impact Factor (SJIF): 4.72 International Journal of Advance Engineering and Research Development Volume 4, Issue 4, April 217 eissn (O): 2348447 pissn (P): 2348646 Analysis,
More informationCHAPTER5 DESIGN OF DIRECT TORQUE CONTROLLED INDUCTION MOTOR DRIVE
113 CHAPTER5 DESIGN OF DIRECT TORQUE CONTROLLED INDUCTION MOTOR DRIVE 5.1 INTRODUCTION This chapter describes hardware design and implementation of direct torque controlled induction motor drive with
More informationCHAPTER IV DESIGN AND ANALYSIS OF VARIOUS PWM TECHNIQUES FOR BUCK BOOST CONVERTER
59 CHAPTER IV DESIGN AND ANALYSIS OF VARIOUS PWM TECHNIQUES FOR BUCK BOOST CONVERTER 4.1 Conventional Method A buckboost converter circuit is a combination of the buck converter topology and a boost converter
More informationCh.8 INVERTER. 8.1 Introduction. 8.2 The FullBridge Converter. 8.3 The SquareWave Inverter. 8.4 Fourier Series Analysis
Ch.8 INVERTER 8.1 Introduction 8.2 The FullBridge Converter 8.3 The SquareWave Inverter 8.4 Fourier Series Analysis 8.5 Total Harmonic Distortion 8.6 PSpice Simulation of SquareWave Inverters 8.7 Amplitude
More informationSVPWM RectifierInverter Nine Switch Topology for Three Phase UPS Applications
SVPWM RectifierInverter Nine Switch Topology for Three Phase UPS Applications Kokila A Department of Electrical and Electronics Engineering Anna University, Chennai Srinivasan S Department of Electrical
More informationModule 5. DC to AC Converters. Version 2 EE IIT, Kharagpur 1
Module 5 DC to AC Converters Version 2 EE IIT, Kharagpur 1 Lesson 37 Sine PWM and its Realization Version 2 EE IIT, Kharagpur 2 After completion of this lesson, the reader shall be able to: 1. Explain
More informationLecture Note. DCAC PWM Inverters. Prepared by Dr. Oday A Ahmed Website: https://odayahmeduot.wordpress.com
Lecture Note 10 DCAC PWM Inverters Prepared by Dr. Oday A Ahmed Website: https://odayahmeduot.wordpress.com Email: 30205@uotechnology.edu.iq Scan QR DCAC PWM Inverters Inverters are AC converters used
More informationSpeed Control Of Transformer Cooler Control By Using PWM
Speed Control Of Transformer Cooler Control By Using PWM Bhushan Rakhonde 1, Santosh V. Shinde 2, Swapnil R. Unhone 3 1 (assistant professor,department Electrical Egg.(E&P), Des s Coet / S.G.B.A.University,
More informationPREDICTIVE CONTROL OF INDUCTION MOTOR DRIVE USING DSPACE
PREDICTIVE CONTROL OF INDUCTION MOTOR DRIVE USING DSPACE P. Karlovský, J. Lettl Department of electric drives and traction, Faculty of Electrical Engineering, Czech Technical University in Prague Abstract
More informationELEC387 Power electronics
ELEC387 Power electronics Jonathan Goldwasser 1 Power electronics systems pp.3 15 Main task: process and control flow of electric energy by supplying voltage and current in a form that is optimally suited
More informationLecture 19  Singlephase squarewave inverter
Lecture 19  Singlephase squarewave inverter 1. Introduction Inverter circuits supply AC voltage or current to a load from a DC supply. A DC source, often obtained from an ACDC rectifier, is converted
More informationDesign of Three Phase PWM Voltage Source Inverter for Induction Heater
Design of Three Phase PWM Voltage Source Inverter for Induction Heater Divya.S.R. 1, Ashwini.K.V.2, Nandish B.M. 3 1,2 UG Student, 3 Assistant Proffesor Department of EEE,JIT,Karnataka,India Abstract:
More informationCOMPARATIVE HARMONIC ANALYSIS OF VSI FED INDUCTION MOTOR DRIVE
Volume2, Issue5, May214 COMPARATIVE HARMONIC ANALYSIS OF VSI FED INDUCTION MOTOR DRIVE 1 NIKHIL D. PATNE, 2 SUSHANT S. ANGRE, 3 MONALISA DASH Student of Electrical Engineering Mumbai University, Student
More informationELECTRONIC CONTROL OF A.C. MOTORS
CONTENTS C H A P T E R46 Learning Objectives es Classes of Electronic AC Drives Variable Frequency Speed Control of a SCIM Variable Voltage Speed Control of a SCIM Chopper Speed Control of a WRIM Electronic
More informationSimulation of Speed Control of Induction Motor with DTC Scheme Patel Divyaben Lalitbhai 1 Prof. C. A. Patel 2 Mr. B. R. Nanecha 3
IJSRD  International Journal for Scientific Research & Development Vol. 3, Issue 09, 2015 ISSN (online): 23210613 Simulation of Speed Control of Induction Motor with DTC Scheme Patel Divyaben Lalitbhai
More informationSimulation Analysis of SPWM Variable Frequency Speed Based on Simulink
Sensors & Transducers 2014 by IFSA Publishing, S. L. http://www.sensorsportal.com Simulation Analysis of SPWM Variable Frequency Speed Based on Simulink MinYan DI Hebei Normal University, Shijiazhuang
More informationDevelopment of Variable Speed Drive for Single Phase Induction Motor Based on Frequency Control
Development of Variable Speed Drive for Single Phase Induction Motor Based on Frequency Control W.I.Ibrahim, R.M.T.Raja Ismail,M.R.Ghazali Faculty of Electrical & Electronics Engineering Universiti Malaysia
More informationDistributed Energy Engineering
Distributed Energy Engineering (IKE1002) Part5: Frequency Converter Energy growth 20072030 by IEA World average Energy efficiency potential Electrical energy needed to produce 1 USD in GNP MidleEast
More informationSimulation & Implementation Of Three Phase Induction Motor On Single Phase By Using PWM Techniques
Simulation & Implementation Of Three Phase Induction Motor On Single Phase By Using PWM Techniques Ashwini Kadam 1,A.N.Shaikh 2 1 Student, Department of Electronics Engineering, BAMUniversity,akadam572@gmail.com,9960158714
More informationInternational Journal of Advance Engineering and Research Development
Scientific Journal of Impact Factor (SJIF): 4.14 International Journal of Advance Engineering and Research Development Volume 3, Issue 10, October 2016 eissn (O): 23484470 pissn (P): 23486406 Single
More informationIMPLEMENTATION OF QALU BASED SPWM CONTROLLER THROUGH FPGA. This Chapter presents an implementation of area efficient SPWM
3 Chapter 3 IMPLEMENTATION OF QALU BASED SPWM CONTROLLER THROUGH FPGA 3.1. Introduction This Chapter presents an implementation of area efficient SPWM control through single FPGA using QFormat. The SPWM
More informationCHAPTER 3 SINGLE SOURCE MULTILEVEL INVERTER
42 CHAPTER 3 SINGLE SOURCE MULTILEVEL INVERTER 3.1 INTRODUCTION The concept of multilevel inverter control has opened a new avenue that induction motors can be controlled to achieve dynamic performance
More informationINTRODUCTION. In the industrial applications, many threephase loads require a. supply of Variable Voltage Variable Frequency (VVVF) using fast and
1 Chapter 1 INTRODUCTION 1.1. Introduction In the industrial applications, many threephase loads require a supply of Variable Voltage Variable Frequency (VVVF) using fast and highefficient electronic
More information14. DC to AC Converters
14. DC to AC Converters Singlephase inverters: 14.1 Singlephase halfbridge inverter This type of inverter is very simple in construction. It does not need output transformer like parallel inverter.
More informationSINGLE PHASE BRIDGELESS PFC FOR PI CONTROLLED THREE PHASE INDUCTION MOTOR DRIVE
SINGLE PHASE BRIDGELESS PFC FOR PI CONTROLLED THREE PHASE INDUCTION MOTOR DRIVE Sweatha Sajeev 1 and Anna Mathew 2 1 Department of Electrical and Electronics Engineering, Rajagiri School of Engineering
More informationA NOVEL SWITCHING PATTERN OF CASCADED MULTILEVEL INVERTERS FED BLDC DRIVE USING DIFFERENT MODULATION SCHEMES
International Journal of Electrical and Electronics Engineering Research (IJEEER) ISSN(P): 2250155X; ISSN(E): 2278943X Vol. 3, Issue 5, Dec 2013, 243252 TJPRC Pvt. Ltd. A NOVEL SWITCHING PATTERN OF
More informationA VARIABLE SPEED PFC CONVERTER FOR BRUSHLESS SRM DRIVE
A VARIABLE SPEED PFC CONVERTER FOR BRUSHLESS SRM DRIVE Mrs. M. Rama Subbamma 1, Dr. V. Madhusudhan 2, Dr. K. S. R. Anjaneyulu 3 and Dr. P. Sujatha 4 1 Professor, Department of E.E.E, G.C.E.T, Y.S.R Kadapa,
More informationPOWER SWITCHING CONVERTERS Medium and High Power
POWER SWITCHING CONVERTERS Medium and High Power By Dorin O. Neacsu Taylor &. Francis Taylor & Francis Group Boca Raton London New York CRC is an imprint of the Taylor & Francis Group, an informa business
More informationHARDWARE IMPLEMENTATION OF DIGITAL SIGNAL CONTROLLER FOR THREE PHASE VECTOR CONTROLLED INDUCTION MOTOR
HARDWARE IMPLEMENTATION OF DIGITAL SIGNAL CONTROLLER FOR THREE PHASE VECTOR CONTROLLED INDUCTION MOTOR SOHEIR M. A. ALLAHON, AHMED A. ABOUMOBARKA, MAGD A. KOUTB, H. MOUSA Engineer,Faculty of Electronic
More informationCHAPTER 2 VSI FED INDUCTION MOTOR DRIVE
CHAPTER 2 VI FE INUCTION MOTOR RIVE 2.1 INTROUCTION C motors have been used during the last century in industries for variable speed applications, because its flux and torque can be controlled easily by
More informationCHAPTER 4 MODIFIED H BRIDGE MULTILEVEL INVERTER USING MPDSPWM TECHNIQUE
58 CHAPTER 4 MODIFIED H BRIDGE MULTILEVEL INVERTER USING MPDSPWM TECHNIQUE 4.1 INTRODUCTION Conventional voltage source inverter requires high switching frequency PWM technique to obtain a quality output
More informationUG Student, Department of Electrical Engineering, Gurunanak Institute of Engineering & Technology, Nagpur
A Review: Modelling of Permanent Magnet Brushless DC Motor Drive Ravikiran H. Rushiya 1, Renish M. George 2, Prateek R. Dongre 3, Swapnil B. Borkar 4, Shankar S. Soneker 5 And S. W. Khubalkar 6 1,2,3,4,5
More informationModule 5. DC to AC Converters. Version 2 EE IIT, Kharagpur 1
Module 5 DC to AC Converters Version 2 EE IIT, Kharagpur 1 Lesson 38 Other Popular PWM Techniques Version 2 EE IIT, Kharagpur 2 After completion of this lesson, the reader shall be able to: 1. Explain
More informationAnalysis of Advanced Techniques to Eliminate Harmonics in AC Drives
Analysis of Advanced Techniques to Eliminate Harmonics in AC Drives Amit P. Wankhade 1, Prof. C. Veeresh 2 2 Assistant Professor, MIT mandsour Email amitwankhade03@gmail.com Abstract Variable speed AC
More informationARDUINO BASED SPWM THREE PHASE FULL BRIDGE INVERTER FOR VARIABLE SPEED DRIVE APPLICATION MUHAMAD AIMAN BIN MUHAMAD AZMI
ARDUINO BASED SPWM THREE PHASE FULL BRIDGE INVERTER FOR VARIABLE SPEED DRIVE APPLICATION MUHAMAD AIMAN BIN MUHAMAD AZMI MASTER OF ENGINEERING(ELECTRONICS) UNIVERSITI MALAYSIA PAHANG UNIVERSITI MALAYSIA
More informationActive Rectifier in Microgrid
03.09.2012 Active Rectifier in Microgrid  Developing a simulation model in SimPower  Dimensioning the filter  Current controller comparison  Calculating average losses in the diodes and transistors
More informationSimulation of load & Electromagnetic Torque Controlled Single Phase asynchronous motor using Cycloconverter
Simulation of load & Electromagnetic Torque Controlled Single Phase asynchronous motor using Cycloconverter Dr. Javed Khan Bhutto 1, Pooja Sharma 2 1 Professor, Department of Electrical Engineering, Marudhar
More informationLatest Control Technology in Inverters and Servo Systems
Latest Control Technology in Inverters and Servo Systems Takao Yanase Hidetoshi Umida Takashi Aihara. Introduction Inverters and servo systems have achieved small size and high performance through the
More informationDesign of Three Phase SVPWM Inverter Using dspic
Design of Three Phase SVPWM Inverter Using dspic Pritam Vikas Gaikwad 1, Prof. M. F. A. R. Satarkar 2 1,2 Electrical Department, Dr. Babasaheb Ambedkar Technological University (India) ABSTRACT Induction
More informationThreePhase Induction Motors. By Sintayehu Challa ECEg332:Electrical Machine I
ThreePhase Induction Motors 1 2 3 Classification of AC Machines 1. According to the type of current Single Phase and Three phase 2. According to Speed Constant Speed, Variable Speed and Adjustable Speed
More informationA Fuzzy Controlled PWM Current Source Inverter for Wind Energy Conversion System
7 International Journal of Smart Electrical Engineering, Vol.3, No.2, Spring 24 ISSN: 2259246 pp.7:2 A Fuzzy Controlled PWM Current Source Inverter for Wind Energy Conversion System Mehrnaz Fardamiri,
More informationExperiment 3. Performance of an induction motor drive under V/f and rotor flux oriented controllers.
University of New South Wales School of Electrical Engineering & Telecommunications ELEC4613  ELECTRIC DRIVE SYSTEMS Experiment 3. Performance of an induction motor drive under V/f and rotor flux oriented
More informationModeling and Simulation of Five Phase Induction Motor Fed with Five Phase Inverter Topologies
Indian Journal of Science and Technology, Vol 8(19), DOI: 1.17485/ijst/215/v8i19/7129, August 215 ISSN (Print) : 9746846 ISSN (Online) : 9745645 Modeling and Simulation of Five Phase Induction Motor
More informationCHAPTER 6 THREELEVEL INVERTER WITH LC FILTER
97 CHAPTER 6 THREELEVEL INVERTER WITH LC FILTER 6.1 INTRODUCTION Multi level inverters are proven to be an ideal technique for improving the voltage and current profile to closely match with the sinusoidal
More informationDSP based Pulse Generation for Induction Motor Speed Control
International Journal of Computer Applications (975 8887) Volume 1 No.14, July 15 DSP based Pulse Generation for Induction Motor Speed Control Hardik A.Shah Research Scholar,Electrical Engg.Deptt.,FTE
More informationOpen Loop V/F Control of Induction Motor based on PWM Technique
Open Loop V/F Control of Induction Motor based on PWM Technique Prof. Rajab Ibsaim #1, Eng. Ashraf Shariha #, Dr. Ali A Mehna *3 # Department of Electrical Engineering, Azawia University 1 ZawiaLibya
More informationInfluence of Voltage Source Pulse Width Modulated Switching and Induction Motor Circuit on Harmonic Current Content
Wright State University CORE Scholar Browse all Theses and Dissertations Theses and Dissertations 2008 Influence of Voltage Source Pulse Width Modulated Switching and Induction Motor Circuit on Harmonic
More informationCourseware Sample F0
Electric Power / Controls Courseware Sample 85822F0 A ELECTRIC POWER / CONTROLS COURSEWARE SAMPLE by the Staff of LabVolt Ltd. Copyright 2009 LabVolt Ltd. All rights reserved. No part of this publication
More informationV/F Speed Control of 3 phase Induction Motor using Space Vector Modulation
V/F Speed Control of 3 phase Induction Motor using Space Vector Modulation Ms.Priya Subhash Raichurkar Asst.Prof.Electrical Engineering Department N.B.N Sinhgad college of Engineering, Solapur. Mr. Asif
More informationANALYSIS OF POWER QUALITY IMPROVEMENT OF BLDC MOTOR DRIVE USING CUK CONVERTER OPERATING IN DISCONTINUOUS CONDUCTION MODE
ANALYSIS OF POWER QUALITY IMPROVEMENT OF BLDC MOTOR DRIVE USING CUK CONVERTER OPERATING IN DISCONTINUOUS CONDUCTION MODE Bhushan P. Mokal 1, Dr. K. Vadirajacharya 2 1,2 Department of Electrical Engineering,Dr.
More informationUse of Advanced Unipolar SPWM Technique for Higher Efficiency High Power Applications
2 nd International Conference on Multidisciplinary Research & Practice P a g e 161 Use of Advanced Unipolar SPWM Technique for Higher Efficiency High Power Applications Naman Jadhav, Dhruv Shah Institute
More informationCHAPTER  3 CONVENTIONAL SOURCE INVERTER FED INDUCTION MOTOR DRIVE. output voltage could be fixed or variable at a fixed or variable frequency.
CHAPTER  3 CONVENTIONAL SOURCE INVERTER FED INDUCTION MOTOR DRIVE 3.1. Introduction The objective of this chapter is to describe conventional source inverters, modes of operations and comparisons. DC
More informationSpace Vector PWM Voltage Source Inverter Fed to Permanent Magnet Synchronous Motor
International Journal of Engineering Research and Development eissn: 2278067X, pissn: 2278800X, www.ijerd.com Volume 12, Issue 6 (June 2016), PP.5060 Space Vector PWM Voltage Source Inverter Fed to
More informationCHAPTER 4 FUZZY BASED DYNAMIC PWM CONTROL
47 CHAPTER 4 FUZZY BASED DYNAMIC PWM CONTROL 4.1 INTRODUCTION Passive filters are used to minimize the harmonic components present in the stator voltage and current of the BLDC motor. Based on the design,
More informationSIMULATION AND IMPLEMENTATION OF MULTILEVEL INVERTER BASED INDUCTION MOTOR DRIVE BASED ON PWM TECHNIQUES
SIMULATION AND IMPLEMENTATION OF MULTILEVEL INVERTER BASED INDUCTION MOTOR DRIVE BASED ON PWM TECHNIQUES 1 CH.Manasa, 2 K.Uma, 3 D.Bhavana Students of B.Tech, Electrical and Electronics Department BRECW,
More informationHarmonics White Paper
Harmonics White Paper New Breakthrough In PWM Drives Technology Reduces Input Line Harmonics Without the Use of Filtering Devices Harmonic Distortion Damages Equipment and Creates a Host of Other Problems
More informationDr.Arkan A.Hussein Power Electronics Fourth Class. Operation and Analysis of the Three Phase Fully Controlled Bridge Converter
Operation and Analysis of the Three Phase Fully Controlled Bridge Converter ١ Instructional Objectives On completion the student will be able to Draw the circuit diagram and waveforms associated with a
More informationECET Industrial Motor Control. Variable Frequency Drives. Electronic Motor Drives
ECET 4530 Industrial Motor Control Variable Frequency Drives Electronic Motor Drives Electronic motor drives are devices that control the speed, torque and/or rotational direction of electric motors. Electronic
More informationElectrical Motor Power Measurement & Analysis
Electrical Motor Power Measurement & Analysis Understand the basics to drive greater efficiency Test&Measurement Energy is one of the highest cost items in a plant or facility, and motors often consume
More informationDevelopment of a SinglePhase PWM AC Controller
Pertanika J. Sci. & Technol. 16 (2): 119127 (2008) ISSN: 01287680 Universiti Putra Malaysia Press Development of a SinglePhase PWM AC Controller S.M. Bashi*, N.F. Mailah and W.B. Cheng Department of
More informationAC Drives and Soft Starter Application Guide
Feature AC Drives and Soft Starter Application Guide by Walter J Lukitsch PE, Gary Woltersdorf Jeff Theisen, and John Streicher AllenBradley Company Abstract: There are usually several choices for starting
More informationFigure 1 Typical Inverter Block Diagram
AC Drives and Soft Starter Application Guide Walter J Lukitsch PE, Gary Woltersdorf Jeff Theisen, John Streicher AllenBradley Company Milwaukee, WI Abstract: There are usually several choices for starting
More informationDirect AC/AC power converter for wind power application
Direct AC/AC power converter for wind power application Kristian Prestrud Astad, Marta Molinas Norwegian University of Science and Technology Department of Electric Power Engineering Trondheim, Norway
More informationConventional PaperII2013
1. All parts carry equal marks Conventional PaperII013 (a) (d) A 0V DC shunt motor takes 0A at full load running at 500 rpm. The armature resistance is 0.4Ω and shunt field resistance of 176Ω. The machine
More informationIJSER
International Journal of Scientific & Engineering Research, Volume 6, Issue 8, August2015 905 Performance Analysis of three phase induction motor drive for Various PWM control Methods Amol R. Sutar, Girish
More informationABSTRACT. Introduction
Simulation Of A 4Switch,3Phase Inverter Fed Induction Motor (IM) Drive System Prof. A.A.Apte AISSMS College of Engineering, Pune University/Pune, Maharashtra, India V.D.Malwade AISSMS College of Engineering,
More informationMicrocontroller Based Threephase Voltage Source Inverter for Alternative Energy Source. Abstract
Microcontroller Based Threephase Voltage Source Inverter for Alternative Energy Source M.M. A. Rahman, Kurt Hammons, Phillip Beemer, Marcia Isserstedt, and Matt Trommater School of Engineering Padnos
More informationDesign of FPGA Based SPWM Single Phase FullBridge Inverter
Design of FPGA Based SPWM Single Phase FullBridge Inverter Afarulrazi Abu Bakar 1, *,Md Zarafi Ahmad 1 and Farrah Salwani Abdullah 1 1 Faculty of Electrical and Electronic Engineering, UTHM *Email:afarul@uthm.edu.my
More informationMicro Controller Based Ac Power Controller
Wireless Sensor Network, 9, 2, 61121 doi:1.4236/wsn.9.112 Published Online July 9 (http://www.scirp.org/journal/wsn/). Micro Controller Based Ac Power Controller S. A. HARI PRASAD 1, B. S. KARIYAPPA 1,
More informationDsPIC based Fixed Speed Induction Motor Drive
DsPIC based Fixed Speed Induction Motor Drive Amogh Jain B A 1, Smt. S. Poornima 2 1 PG Scholar, Dept. of EEE, M.S. Ramaiah Institute of Technology, Bangalore, India 2 Assistant professor, Dept. of EEE,
More informationGATE: Electronics MCQs (Practice Test 1 of 13)
GATE: Electronics MCQs (Practice Test 1 of 13) 1. Removing bypass capacitor across the emitter leg resistor in a CE amplifier causes a. increase in current gain b. decrease in current gain c. increase
More informationHardware Implementation of SPWM Based Diode Clamped Multilevel Invertr
Hardware Implementation of SPWM Based Diode Clamped Multilevel Invertr Darshni M. Shukla Electrical Engineering Department Government Engineering College Valsad, India darshnishukla@yahoo.com Abstract:
More informationReduction of Power Electronic Devices with a New Basic Unit for a Cascaded Multilevel Inverter fed Induction Motor
International Journal for Modern Trends in Science and Technology Volume: 03, Issue No: 05, May 2017 ISSN: 24553778 http://www.ijmtst.com Reduction of Power Electronic Devices with a New Basic Unit for
More informationBrushless DC Motor Drive using Modified Converter with Minimum Current Algorithm
Brushless DC Motor Drive using Modified Converter with Minimum Current Algorithm Ajin Sebastian PG Student Electrical and Electronics Engineering Mar Athanasius College of Engineering Kerala, India Benny
More informationEfficiency Investigation of an Induction Motor drive system with Three Different Types of Frequency Converters with focus on HVAC applications
Efficiency Investigation of an Induction Motor drive system with Three Different Types of Frequency Converters with focus on HVAC applications Johan Åström University of Chalmers, Sweden Corresponding
More informationEffect of Carrier Frequency on the Performance of Three Phase SPWM Inverter
Effect of Carrier Frequency on the Performance of Three Phase SPWM Inverter Prof. SuryakantH.Pawar 1, Miss. ApurvaS.Kulkarni 2, Mr. Chetan A. Jambhulkar 3 Associate Professor 1,P.G. Scholer 23 Electrical
More informationA Novel Four Switch Three Phase Inverter Controlled by Different Modulation Techniques A Comparison
Volume 2, Issue 1, JanuaryMarch, 2014, pp. 1423, IASTER 2014 www.iaster.com, Online: 23475439, Print: 23480025 ABSTRACT A Novel Four Switch Three Phase Inverter Controlled by Different Modulation Techniques
More information3 PHASE INVERTER WITH 180 AND 120 CONDUCTION MODE
3 PHASE INVERTER WITH 180 AND 120 CONDUCTION MODE Mahendra G. Mathukiya 1 1 Electrical Department, C.U. Shah College of Engineering & Technology Abstract Today most of the appliances and machine works
More informationSimulation And Comparison Of Space Vector Pulse Width Modulation For Three Phase Voltage Source Inverter
Simulation And Comparison Of Space Vector Pulse Width Modulation For Three Phase Voltage Source Inverter Associate Prof. S. Vasudevamurthy Department of Electrical and Electronics Dr. Ambedkar Institute
More informationSpeed Control of Induction Motor using Space Vector Modulation
SSRG International Journal of Electrical and Electronics Engineering (SSRGIJEEE) volume Issue 12 December 216 Speed Control of Induction Motor using Space Vector Modulation K Srinivas Assistant Professor,
More informationResearch Article International Journals of Advanced Research in Computer Science and Software Engineering ISSN: X (Volume7, Issue6)
International Journals of Advanced Research in Computer Science and Software Engineering Research Article June 2017 Closed Loop PI Control of a Single Phase Induction Motor Using SPWM Kuheli Ghosh Goswami
More informationPOWER ELECTRONICS. Converters, Applications, and Design. NED MOHAN Department of Electrical Engineering University of Minnesota Minneapolis, Minnesota
POWER ELECTRONICS Converters, Applications, and Design THIRD EDITION NED MOHAN Department of Electrical Engineering University of Minnesota Minneapolis, Minnesota TORE M. UNDELAND Department of Electrical
More informationComparison of PI and Fuzzy Controllers for Closed Loop Control of PV Based Induction Motor Drive
Comparison of PI and Fuzzy Controllers for Closed Loop Control of PV Based Induction Motor Drive Mohammed Hasnuddin PG Student, Department of EEE, Hyderabad Institute of Technology & Management, Telangana,
More informationExperiment 4: ThreePhase DCAC Inverter
1.0 Objectives he University of New South Wales School of Electrical Engineering & elecommunications ELEC4614 Experiment 4: hreephase DCAC Inverter his experiment introduces you to a threephase bridge
More informationNPTEL
NPTEL Syllabus Pulse width Modulation for Power Electronic Converters  Video course COURSE OUTLINE Converter topologies for AC/DC and DC/AC power conversion, overview of applications of voltage source
More information630 IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS, VOL. 9, NO. 2, MAY 2013
630 IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS, VOL. 9, NO. 2, MAY 2013 Development of HighReliability EV and HEV IM Propulsion Drive With UltraLow Latency HIL Environment Evgenije M. Adžić, Member,
More informationSpeed control of three phase induction motor drive using SVPWM control scheme
Speed control of three phase induction motor drive using SVPWM control scheme 1 Gajjar Jahnavibahen B., 2 Mr.Ghanshyam Gajjar 1 MEPEED Student, Dept. of Electrical Engineering, MEFGI, Rajkot, 2 SR. Engineer,
More informationThreePhase, StepWave Inverter Circuits
0 ThreePhase, StepWave Inverter Circuits 0. SKELETON INVERTER CIRCUIT The form of voltagesource inverter (VSI) most commonly used consists of a threephase, naturally commutated, controlled rectifier
More informationDEVELOPMENT OF A SILENT BRUSHLESS DC MOTOR DRIVE. S. Camilleri, D. Patterson & H. Pullen
DEVELOPMENT OF A SILENT BRUSHLESS DC MOTOR DRIVE S. Camilleri, D. Patterson & H. Pullen NT Centre for Energy Research, Australian CRC for Renewable Energy Northern Territory University Darwin, N.T. 0909
More information