Published Paper Details:

ABSTRACT: When dealing with photovoltaic generating, an inverter that is both efficient and reliable is critical. Switching frequency is the most popular approach to raise the standard of the inverter output voltage. However, power losses will increase as a result of this strategy. As a result, this work proposes a hybrid unipolar pulse width modulation (UP-PWM) system. For generating positive power, the hybrid method uses traditional UP-PWM. A modulation system that only necessitates the operation of freewheeling switches is especially presented for the generation of negative power. Control of output voltage and current zero crossing points (ZCPs) is also introduced by means of a UP-PWM UPWM closed control with a changed dead time. A 3-kW HERIC inverter system with a 25-kHz frequency is used in simulations and experiments to verify the efficiency of the suggested mehod. Reactive power injection is better with the hybrid UP-PWM closed control method, and efficiency is better than with the traditional UP-PWM closed control method with dead time, according to the results. Better power quality is another benefit of the UP-PWM closed control system that has been offered.