Performance Analysis of SRM with Two Stage Commutation for Effective Vibration Reduction

The simple structure, high fault tolerance capability, and low cost have made Switched Reluctance Motor (SRM), a promising option for many industrial applications. The major challenges SRM drives currently face are the noise and vibration due to radial force variations. It is essential to address these problems to bring them more into the market. The paper presents the analysis of two-stage commutation, a method of Active Vibration cancellation (AVC), by which noise issues can effectively be reduced without compromising much on the other performance parameters. A closed loop model of SRM with two stage commutation is developed and is tested for different speed and load conditions. AVC is demonstrated by modelling the vibration signal using radial force data obtained using finite element analysis platform. By two-stage commutation, peak vibration is considerably reduced and hence an effective solution for acoustic noise problems in SRM.