Sinusoidal and Space Vector Pulse Width Modulation for Inverter

K. Mounika; B.Kiran Babu

doi:https://doi.org/10.14445/22315381/IJETT-V4I4P303

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Volume 4 | Issue 4 | Year 2013 | Article Id. IJETT-V4I4P303 | DOI : https://doi.org/10.14445/22315381/IJETT-V4I4P303

Sinusoidal and Space Vector Pulse Width Modulation for Inverter

K. Mounika , B.Kiran Babu

Citation :

K. Mounika , B.Kiran Babu, "Sinusoidal and Space Vector Pulse Width Modulation for Inverter," International Journal of Engineering Trends and Technology (IJETT), vol. 4, no. 4, pp. 1012-1017, 2013. Crossref, https://doi.org/10.14445/22315381/IJETT-V4I4P303

Abstract

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 .

Keywords

PWM (pulse width modulation), SPWM (sinu soidal pulse width modulation) and SVPWM (space vector pulse width modulation ).

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