Modified solar power generation using impedance source inverter

Abstract

Photovoltaic source (PV) has become one of the most promising DC sources of the future. We use inverter to convert the dc output of the PV in order to utilize it for AC appliances. Zsource inverter which is an advancement of traditional converter (VSI & CSI), with a built-in X shaped impedance network. This provides a single stage power conversion concept whereas the traditional inverter requires two stage power conversions for renewable energy applications. With modification to the traditional pulse width modulated (PWM) signal there are three PWM strategies are used for Z-source inverter. In this maximum boost control which helps in high voltage conversion factor with a short shoot through duration and helps in attaining voltage boost gain by converting all traditional zero states into shootthrough state. This prevents the damage of inverter, high voltage stress and reduces dead time delay.