级联H桥多电平逆变器的移相载波同步正弦PWM技术

This paper analyzes synchronization strategy for cascaded H-bridge multilevel inverter (CHBMLI) topologies with a carrier-based sinusoidal phase-shifted pulse width modulation (PSPWM) technique. In the PSPWM technique, a separate carrier is used for each H-bridge (HB). The carriers are generally phase shifted from each other by π/x rad (x = No. of HBs) for unipolar PWM. With the carrier frequency ...