Abstract: In growing number of industrial market. Voltage source inverters have proven to be more efficient, has greater reliability and higher dynamic response. Pulse Width Modulation (PWM) techniques are increasingly applied in industrial applications for variable speed drives. In this we are using different switching techniques for analysis of voltage source inverter such as uni polar and bipolar PWM and Sine Pulse Width Modulation method for a single-phase voltage source inverter.  The PWM technique results in reduced Total Harmonic Distortion (THD) improving the spectral quality of the output. The parameters such as Weighted Total Harmonic Distortion (WTHD), Distortion factor (DF), Harmonic Spread Factor (HSF) and switching losses are computed. Voltage Source inverters (VSI) have been widely used in uninterruptible power supplies, unified power quality conditioners and distributed generations systems (DGS). Voltage source inverters are inherently efficient, compact and economical devices used to control power flow and provide quality supply.

Keywords— Voltage source inverter, Sine Pulse Width Modulation, Pulse Width Modulation, Weighted Total Harmonic Distortion, Distortion factor, Harmonic Spread Factor and switching losses.

| DOI: 10.17148/IARJSET.2020.7524