Multilevel Inverters for Electric Vehicle Applications

摘要

This paper presents multilevel inverters as an application for all-electric211u001evehicle (EV) and hybrid-electric vehicle (HEV) motor drives. Diode-clamped 211u001einverters and cascaded H-bridge inverters, (1) can generate near-sinusoidal 211u001evoltages with only fundamental frequency switching; (2) have almost no 211u001eelectromagnetic interference (EMI) and common-mode voltage; and (3) make an EV 211u001emore accessible/safer and open wiring possible for most of an EV's power system. 211u001eThis paper explores the benefits and discusses control schemes of the cascade 211u001einverter for use as an EV motor drive or a parallel HEV drive and the diode-211u001eclamped inverter as a series HEV motor drive. Analytical, simulated, and 211u001eexperimental results show the superiority of these multilevel inverters for this 211u001enew niche.