Sinusoidal and Space Vector Pulse Width Modulation for Inverter
|International Journal of Engineering Trends and Technology (IJETT)||
|© 2013 by IJETT Journal|
|Year of Publication : 2013|
|Authors : K. Mounika , B.Kiran Babu|
K. Mounika , B.Kiran Babu. "Sinusoidal and Space Vec tor Pulse Width Modulation for Inverter". International Journal of Engineering Trends and Technology (IJETT). V4(4):1012-1017 Apr 2013. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group.
Inverters inherently have the property of controlling output frequency but the output vol t- age can’t be varied. Usually to vary output voltage we have to vary supply voltage which is not always possible for this reason PWM techniques gained momentum. Basic aim of PWM technique is to control output voltage and harmonic reduction. Pulse - widt h modulation (PWM) , or pulse - duration modulation (PDM) , is a commonly used technique for controlling power to inertial electr i- cal devices, made practical by modern electronic power switches. Here we apply PWM techniques like Sinusoidal pulse width modulati on (SPWM) and Space Vector Pulse width Modulation (SVPWM) to inverter and study its performance. In Sinusoidal Pulse width modulation (SPWM) we generate the gating signals by co m- paring a sinusoidal reference signal with a tria n- gular carrier wave. In Space vector Modulation (SVPWM) we consider a rotating phased which is obtained by adding all the three voltages. Modul a- tion is accomplished by switching state of an i n- verter. Thus by comparing these two techniques we study the performance of our inverter .
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PWM (pulse width modulation), SPWM (sinu soidal pulse width modulation) and SVPWM (space vector pulse width modulation ).