Modified Sinusoidal PWM Technique for Low Loss Inverter Application

The efficiency of the main system is the most important concern for all power electronic engineers when designing power electronic converters. Normally there is a high switching state in conventional full-bridge inverter with sinusoidal pulse width modulation (SPWM), resulting in greater switching loss. This problem usually causes the efficiency of the inverter to fall to a certain level, resulting in poor inverter performance. In this study, the switching strategy can be changed to reduce the switching status while maintaining the original inverter frequency. The main goal of this research to reduce the switching loss of the inverter by modified the conventional SPWM to become a lesser switching state without losing the nature characteristic of the SPWM switching technique. The modified SPWM will be compared to the conventional SPWM in terms of switching loss and total harmonic distortion performance.