Optimal Dead-Time Elimination for Voltage Source Inverters

The dead-time effects of an inverter is analyzed, and a no-dead-time control scheme is presented for the Single-Phase bridge inverter. According to current polarity, a phase-leg can be decomposed into two switching cells without dead-time. Using Immune algorithm (IA) to find the optimal no-dead-time control sequence for the Single-Phase inverter. A simulation based on the no-dead-time control is designed based on matlab / Simulink, and the experiment is done with a full-bridge inverter. The simulation and experimental results verify that the output waveform is improved significantly, DC voltage utilization ratio is increased.