Simulation Based on Open Loop and Close loop Three Phase Sinusoidal Pulse Width Modulation Inverter
Keywords:
PV cell, SPWM, Harmonics, Grid connected inverter (GCI)Abstract
High frequency triangular carrier wave is compared with sinusoidal reference wave for desired
frequency. The width of each pulse is varied in proportion to the amplitude of a sine wave called SPWM. The
inverter should work in voltage control mode in standalone operation. SPWM techniques reduce the harmonics of
output voltage compared to single pulse width modulation and multi pulse width modulation. Inverter with single
stage three phase using bipolar SPWM modulation gives good performance and efficiency because it offers the
advantage of effectively doubling the switching frequency of the inverter voltage and reducing the harmonics on
output voltage.. The dc link voltage has got stable voltage irrespective of AC load parameter. The single stage
three phase Inverter scheme employs a VSI inverter across R Load. The two stage topology will be decided on the
basis of simulation using the MATLAB/PSIM software and hardware implementation. The control algorithm for the
system will be implemented on a low cost microcontroller [7].


