Modeling and simulation of space vector pulse width modulation for three phase voltage source inverter

Nur Shuhada , Ghazali (2014) Modeling and simulation of space vector pulse width modulation for three phase voltage source inverter. Project Report. UTeM. (Submitted)

Text MODELING AND SIMULATION OF SPACE VECTOR PULSE WIDTH MODULATION FOR THREE PHASE VOLTAGE SOURCE INVERTER 24pages.pdf Download (483kB)

Abstract

Various Pulse Width Modulation(PWM) techniques are developed for industrial application [3] to increase performance of industrial power inverter in term of efficiency and output voltage. The research has produce the advancement of Voltage Source Inverter to be flexible AC drive control to obtain variable magnitude and frequency. The most popular technique in controlling voltage source inverter is Space Vector Pulse Width Modulation. Research findings declare that the efficiency of SVPWM technique can be improve by implementing Discontinous Space Vector Pulse Width Modulation (DSVPWM) technique. SVPWM technique has lower efficiency due to high switching losses as this technique uses all three phases quantities while DSVPWM only use two out three phase quantities. Thus, this thesis performed comparative studies of SVPWM and DSVPWM techniques utilizing MATLAB tools. The objectives of this research to analyse the implementation of SVPWM and DSVPWM by using MATLAB/Simulink, to analyse efficiency improvement of DSVPWM over SVPWM as well as to analyse Total Harmonis Distortion for both technique. The research methode is simplified into implementing procedure for modeling and simulating the both technique. Both of the techniques following the implementing procedure but the only difference is at the last three step. The results obtained proved that DSVPWM improved efficeincy of SVPWM but does not improve Total Harmonic Distortion. THD of voltage for both technique is quite similar but in term of THD of current,DSVPWM has slightly higher than SVPWM.

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