Báo Cáo A Fast Step Pulse PWM For Cascade Multilevel Inverters

Abstract​

— The step pulse waveform PWM method is a typical solution in high power cascade inverters. A big problem is to solve transcendent equations, that cause much consuming time. Then an off-line approach is commonly acceptable in practice. In contrary, an on-line approach would be a more elegant solution and no large memmory is needed. This paper presents a simple on-line step pule PWM method, which shows be much superior to present on-line methods for its simplicity, linearity control characteristics and entire modulation range. The mathematical formulations and simulation results have been presented.

Keywords - cascade multilevel inverter, step pulse PWM, overmodulation