A general space vector PWM scheme for multilevel inverters

This paper proposes a new general space vector pulse-width modulation (SVPWM) scheme for multilevel inverters with any voltage levels. The proposed SVPWM scheme calculates the duty cycles and switching states based on the modulation triangle quickly identified through a simple coordinate transformation; no prestored memory-consuming lookup table or time-consuming iterative calculation is required. Therefore, the proposed general SVPWM is computational efficient. Simulation and experimental results are provided to validate the proposed SVPWM scheme.