(1) Characteristics of SPWM modulation waveThe rectifier and inverter in the UPS adopt SPWM control, and the obtained SPWM modulated wave has the following four characteristics.①The SPWM modulation waveform can be turned into a numerically stable quasi-sine wave waveform②By moving the phase of the sinusoidal modulation wave us, the phase of the SPWM modulation wave…
