Current Waveform Analysis of a High-Speed Switched Reluctance Motor for Copper Loss Reduction

Abstract

Switched reluctance motors (SRMs) have been making headway in various fields, primarily in automotive applications. The performance of an SRM is greatly determined by how and when its phase currents are activated and deactivated, as well as the relationship between the current waveform and other performance variables, such as torque ripple or copper loss. This paper analyzes the effects of different firing angles (turn on and turn off angles) on the current waveform and performance. The motor used in this analysis is a 4/2 SRM built for high-speed performance.