Abstract

Widespread irradiation from the sun can be converted to electricity through photovoltaic (PV) cells. But PV power is dependent on solar irradiation and environmental temperature. An inverter interfaces this DC power to AC power at standard voltage and frequency levels. A standalone PV system is considered for the study with a DC-DC boost converter and a two-level three-phase Voltage Source Inverter (VSI) with a resistive-inductive load. The boost converter is controlled for maximum power by the incremental conductance (INC) method. Pulse Width Modulation (PWM) technique is one of the most common methods to control the output of inverter voltage. Sinusoidal PWM (SPWM) and Space Vector Pulse Width Modulation (SVPWM) methods are purposefully applied to reduce the Total Harmonic Distortion (THD) and contrasted in simulation using MATLAB/Simulink. Compared to sinusoidal PWM, this technique implements the input DC voltage more efficiently and power quality performance increases greatly.

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