Space vector pulse width modulation for threelevel converters a labview implementation bengi tolunay this thesis explains the theory and implementation of the space vector pulse width modulation svpwm using the graphical programming environment labview as its basis. It provides an alternative to pwm voltage rectifier double sided. The matrix converter is also known as an allsilicon solution. Spacevector pwm with tms320c24xf24x using hardware and software determined switching patterns zhenyu yu digital signal processing solutions abstract spacevector sv pulse width modulation pwm technique has become a popular pwm technique for threephase voltagesource inverters vsi in applications such as control of ac. Im working about active filter control, the problem that i want to use the svm for the control of the vsi, so i need any one who have a model in simulink for the use of the svm. The proposed spacevector modulation scheme for dualbridge matrix converters uses the principle of the indirect modulation strategy to calculate the duty cycles of the active vectors. Space vector trajectory is also plotted and can be checked at different modulation indexes using the parameter defined in model properties.
This modulation scheme minimises the switching in the converter as at any given time one phase is not being pulse modulated. Matrix converters can directly convert an ac power supply of fixed voltage into an ac voltage of variable amplitude and frequency. Space vector modulation became a standard for the switching power converters and important research effort has been dedicated to this topic. This method does not require too much computation at run time thus feasible for implementation with simple processors. The mc is supplied by an ideal 60hz threephase source and drives a static resistive load at 60hz. This block makes use of the block twolevel multiphase svpwm, also described in 1, that can be used alone with twolevel multiphase converters. Space vector pulse width modulation simulation in simulink 2015. Research methods of vf control for matrix converter use direct. Threephase and twophase space vector pwm modulation options are provided for the irmcx203. Threephase simple space vector pulse width modulation. Fpga implementation and systemlevel validation of matrix. With the development of dsps, spacevector modulation svm has become one of the most important pwm methods for threephase voltage source inverters. I have calculated the motor sector or angle and the speed using the hall effect sensors information.
Research on svm strategy for matrix converter and its simulation. This model simulates a three phase rectifier based on space vector pulse width modulation. Three criteria are chosen to compare the performance of switching patterns. Implementation of svpwm control on fpga for three phase. Matrix converter, space vector modulation, simulation model, induction motor 1. The matrix converter is a direct acac power conversion without an intermediate dc link. These duty cycle signals are expected by the averagevalue threephase inverter block when used in space vector modulation mode. For matrix converter, one switch is responsible for not only. Space vector modulation svm is a frequently used method to implement pulse width modulation pwm in threephase switching converters. A matrix converter is defined as a converter with a single stage of conversion. Modeling, simulation, and real time implementation using simulink provides a summary of ac to ac converter modelling using matlab. This example shows a threephase matrix converter driving a static load and drawing unity power factor at the source. Power quality improvement by designing the lcl filters for.
Modeling and simulation of matrix converter using space vector pwm technique. Indirect spacevector modulation considers the mc as a rectifier and inverter connected via a dc link with no energy storage. Space vector pwm using simulink all about circuits. Matrix converter control using near state space vector pwm. In this technique, spacevector concept is used to compute the duty cycle of the switches. For the problems of matrix converter in practical application, firstly this paper analyzes the working principle of matrix converter and the space vector modulation control strategy, then uses matlabsimulink to model and simulate for matrix converter, analyze the key problems of space vector modulation control strategy between the simulation. Tens of papers, research reports and patents were developed in the last ten years and the theory of space vector modulation is already wellestablished. Space vector modulation scheme for dualbridge matrix. This converter is inherently capable of bidirectional. Svm is really a more general idea again, it really refers to the practice of treating a multiphase bridge as a way of creating a unified output vector, and the ability to jump back and forth between vector states arbitrarily over time.
Implementation of space vector pwm techniques in matrix. Analysis and mathematical modelling of space vector. Power electronics matrix converters tutorialspoint. Simulink space vector pwm simulation matlab answers. The space vector modulator block generates pulses for either a detailed or averagevalue threephase inverter following the space vector pulsewidth modulation strategy. Research methods of vf control for matrix converter use direct space vector modulation. However, the modulation method for matrix converter has the disadvantage of low. Indirect spacevector modulation allows direct control of input current and output voltage and hence allows the power factor of the source to be controlled. In this work, matlabsimulink modeling and simulation of the three phase matrix converter feeding a passive rl load have been performed using the space vector control algorithm. I have been trying to simulate a pmsm speed control using sv pwm in simulink, but i did not manage to get it right. How to apply space vector modulation for indirect matrix converter. This paper also proposes the lcl filter design to eliminate the harmonics. The need to increase the quality and the efficiency of the. Space vector pulse width modulation based three phase.
The simulation and experimental results are provided in sections 4 and 5. Research on svm strategy for matrix converter and its. Parameters can be adjusted from model properties initial call back function. Matlabsimulink based analysis of voltage source inverter with space auzani jidin 27 the reference space vector rotates and moves through the different sectors of the complex plane as shown in figure 5 as time t increases. The research of matrix converter space vector modulation. The model can be used to support selection of suitable values for l, c and the pulse modulation scheme parameters. Comparative studies of different switching patterns for direct and. Indirect space vector modulation allows direct control of input current and output voltage and hence allows the power factor of the source to be controlled. I have implemented the direct torque control using matrix converter in the matlab simulink. This paper presents a matlabsimulink simulation of direct and indirect space vector modulation for matrix converter. The simulated results are analyzed and show that the thd is better for svpwm technique. Space vector pulse width modulation for threelevel.
Space vector modulation of a 3phase bldc motor with the z16fmc mcu multimotor series application note. Matrix converter, space vector pulse width modulation svpwm, pulse width modulation. This model simulates a simple technique to implement space vector modulation. The matrix converter is an alternative to a inverter drive for a frequency control. The matrix converter is a single stage converter which does not require any capacitor as the dclink energy storage component.
The system consists of a threephase matrix converter mc constructed from 9 backtoback igbt switches. Comparative studies of different switching patterns for. A number of pulse width modulation pwm scheme is used to obtain variable voltage and frequency supply from a power converter. It utilizes bidirectional controlled switch to achieve automatic conversion of power from ac to ac. Matrix converter, pulse width modulation pwm, space vector pulse width modulation svpwm, total harmonic distortion thd 1. The switching algorithm is based on an indirect space vector modulation described in 1 which considers the mc as a rectifier and inverter connected via a dc link with no energy storage. The svpwm idea has been used from the matlab drive library.
The model simulates the three phase inverter with space vector pulse width modulation. Svm allows us to maximize the exploitation of the converter hardware. On the other hand, zerovectors duration and distribution within a switching cycle are elaborated such that the line side switches commutate at zerocurrent leading to safe commutation of the converter. All renewable energy sources are in need of multilevel power electronics in. The space vector modulator block consists of seven main blocks. Space vector modulation for an indirect matrix converter. In this mode, the space vector modulator block outputs the duty cycles of the various pulses but not the pulses themselves.
Then different switching patterns are introduced, and each switching pattern will be simulated in matlabsimulink software. This work is a study, analysis and implementation of the indirect space vector modulation for three to three phase matrix converter. It is simply the digital implementation of pwm modulators. Simulink is used to develop the models of ac to ac converters presented, and the book is mostly suitable for researchers and practicing professional engineers working in the area of ac to ac converters. This paper proposes a new dfig system using matrix converter with indirect spacevector modulation scheme, which can effectively interconnect the wind power system with the power grid. Fpga implementation and systemlevel validation of matrix converter space vector modulation algorithm j. Unlike sinusoidal pwm which generates sinusoidal currents separately in each pushpull stage of the inverter, space vector modulation operates the entire inverter as a single unit to produce the sinusoidal currents. Matrix converter, pulse width modulation pwm, space vector pulse width. Realizing space vector modulation in matlabsimulink and.
The tradeoff is the need for narrower pulses for a given level of acceptable harmonics. The input factor is fixed to zero, an over modulation is presented. In this paper, a new space vector modulation svm is proposed to compensate for the input power factor of the indirect matrix converter. Matrix converters as induction motor drivers have received considerable attention in recent years because of its good alternative to voltage source inverter pulse width modulation vsipwm converters. The switching algorithm is based on an indirect spacevector modulation described in 1 which considers the mc as a rectifier and inverter connected via a dc link with no energy storage. Space vector modulator makers of matlab and simulink. Simulations and comparison are done under the same conditions of the input power supply and the output load. The most widely used pwm schemes for threephase voltage source inverter vsi are carrierbased sinusoidal pwm and space vector pwm svpwm. We will simulate such an inverter using simulink for use in ac drives. The multilevel multiphase svpwm performs the multilevel multiphase spacevector pwm svpwm algorithm presented in 1. Compared to sine pwm, svm can achieve a higher ac voltage level. Dobrucky 1department of mechatronics and electronics, faculty of electrical engineering, university of zilina, slovakia tomas. This paper presents the work carried out in developing a mathematical model for a space vector modulated svm direct controlled matrix converter. Modeling and simulation of matrix converter using space.
Modeling and simulation of matrix converter using space vector. One is that it makes many people misunderstand the term space vector modulation. Pdf space vector modulation based direct matrix converter for. Realizing space vector modulation in matlabsimulink and pscad abstract. This paper presents a simple approach for implementation of a space vector pulse width modulation svpwm technique for control of three.