scholarly journals Comparative Studies of Different Switching Patterns for Direct and Indirect Space Vector Modulated Matrix Converter

2012 ◽  
Vol 2012 ◽  
pp. 1-8
Author(s):  
Amin Shabanpour ◽  
Sasan Gholami ◽  
Ali Reza Seifi
Keyword(s):  
Harmonic Distortion ◽  
Harmonic Spectrum ◽  
Matrix Converter ◽  
Space Vector ◽  
Indirect Methods ◽  
Matlab Simulink ◽  
Simulink Simulation ◽  
Switching Patterns ◽  
Vector Modulation ◽  
Direct And Indirect Methods

This paper presents a MATLAB/Simulink simulation of direct and indirect space vector modulation for matrix converter. Different switching patterns for both direct and indirect methods are simulated and compared. Three criteria are chosen to compare the performance of switching patterns: (1) total harmonic distortion (THD); (2) harmonic spectrum analysis of output voltages; and (3) number of switching in each switching period. Switching strategies are completely implemented using the power library in MATLAB/Simulink environment.

scholarly journals ASYMMETRICAL SIX-PHASE SPACE VECTOR PWM SCHEME / ASIMETRINIS ERDVINIO VEKTORIAUS MODULIAVIMO METODAS ŠEŠIŲ FAZIŲ ĮTAMPAI FORMUOTI

2014 ◽  
Vol 6 (2) ◽  
pp. 168-171 ◽  
Author(s):  
Tadas Lipinskis
Keyword(s):  
Modulation Scheme ◽  
Motor Speed ◽  
Space Vector ◽  
Matlab Simulink ◽  
Stator Windings ◽  
Simulink Simulation ◽  
Three Phase ◽  
Electricity Grids ◽  
Torque Pulsations ◽  
Vector Modulation

Multiphase electric motors have smaller torque pulsations and are more reliable that their three-phase alternatives. However, standard electricity grids around the world are three-phase, so power inverter is needed to drive multiphase motors. Inverter is used not only to power the motor, but also to control the am­plitude and frequency of the produced voltage, thus controlling motor speed and torque. Multiphase systems with odd number of phases have been widely investigated; therefore, this paper focuses on a six-phase inverter with a single neutral symmetrical load. A novel asymmetrical space vector modulation scheme is proposed and evaluated using simulations in Matlab/Simulink. Simulation results are compared to other modulation schemes. The proposed method is suitable for generating near-sinusoidal output voltages; however, it might not be suited for driving motors with sinusoidally distributed stator windings. Daugiafaziai elektros varikliai turi mažesnes sukimo momento pulsacijas ir didesnį patikimumą, lyginant su trifaziais varikliais. Pasaulyje paplitę trijų fazių elektros tinklai, todėl daugiafaziams varikliams maitinti reikalingi dažnio keitikliai, keičiantys standartinę vienfazę arba trifazę tinklo įtampą į daugiafazę. Dažnio keitiklis keičia ir išėjimo įtampos amplitudę, ir dažnį. Tai sudaro galimybių tiksliai valdyti variklio greitį. Literatūroje plačiai išnagrinėti daugiafazės įtampos formavimo metodai, esant nelyginiam fazių skaičiui. Darbe siūlomas naujas erdvinių vektorių asimetrinis įtampos formavimo algoritmas šešių fazių dažnio keitikliui, apkrautam simetrine apkrova su viena neutrale. Algoritmas tiriamas Matlab / Simulink programa, rezultatai palyginami su gautais, taikant kitus šešiafazės įtampos formavimo metodus.

scholarly journals Implementation of Ultra-Modified Symmetric Sequence Algorithm for Space Vector Modulation of Matrix Converter

2018 ◽  
Vol 7 (3) ◽  
pp. 264
Author(s):  
Kotb B. Tawfiq ◽  
A. S. Mansour ◽  
E. E. EL-Kholy
Keyword(s):  
Output Voltage ◽  
Harmonic Distortion ◽  
Matrix Converter ◽  
Space Vector Modulation ◽  
Input Frequency ◽  
Output Current ◽  
Output Frequency ◽  
Modified Technique ◽  
Space Vector ◽  
Vector Modulation

<span lang="EN-US">This paper proposes an ultra- modified symmetric sequence algoritm of space vector modulation of matrix converter. The ultra-modified technique improves the drawbacks of the modified one where it provides a reduction of the total harmonic distortion for both output voltage and output current. Some of the advantages of matrix converter are introduced in this paper. These advantages represented in the output frequency of matrix converter which may be greater than input frequency, controlling rms value of the output voltage and the ability to control the input displacement factor.At the end of this paper simulation and experimental results are introduced which give a presice proof to the proposed algorithms.</span>

A Novel Control Strategy of Indirect Matrix Converter Using Space Vector Modulation

2016 ◽  
Vol 7 (3) ◽  
pp. 926
Author(s):  
Kuldeep Behera ◽  
Subrat Behera
Keyword(s):  
Embedded System ◽  
Control Strategy ◽  
Matrix Converter ◽  
Control Technique ◽  
Space Vector Modulation ◽  
Switching Loss ◽  
Space Vector ◽  
Complete Control ◽  
Matlab Simulink ◽  
Vector Modulation

This paper introduces a control scheme of Indirect Matrix Converter which includes space vector modulation to stabilize the frequency variations. The terminal voltage and frequency of any synchronous machine can be controlled easily with this scheme. Further the control strategy is proposed and implemented in Matlab/Simulink Embedded system which gives significant better performance compared to conventional control technique like better Total Harmonic Distortion (THD), more output voltage with same Modulation Index, less switching stress and less switching loss. This method might prove effective for wind energy conversion system using DFIG as the DFIG speed is close to synchronous speed. The complete control strategy is verified using MATLAB/Simulink.

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