Experimental verification on a switched reluctance motor driven by asymmetric flying capacitor multilevel h-bridge inverter

Abstract

An asymmetric flying capacitor multilevel H-bridge inverter has proposed as a drive circuit for switched reluctance motors. The flying capacitor multilevel H-bridge inverter uses many power semiconductor devices. In addition, two capacitors are used per phase in the inverter, although only one capacitor is required at applying 5-level voltage to the stator windings in an SRM. Therefore, the authors have proposed a novel asymmetric flying capacitor multilevel H-bridge inverter. This paper demonstrates through experiments that the proposed inverter is possible to output the same voltage levels as the conventional circuit during excitation interval. Moreover, the vibration characteristics of a switched reluctance motor are evaluated when the current hysteresis control is applied with the proposed circuit.