Analysis of Torque Ripple, Magnetic Field, and Duty Cycle Optimization on 450W 8/6 Switched Reluctance Motor using Finite Element Method
Muhammad R. Fabio, Jihad Furqani, Syarif Hidayat, Umar Khayam

Bandung Institute of Technology

Abstract

This paper discusses the torque and magnetic field characteristics on Switched Reluctance Machine when excited with smoothed trapezoidal current at its winding. Switched Reluctance Motor observed in this paper is 450W, 8/6 type switched reluctance machine commonly used in household applications. To observe the torque ripple electric field distribution on the design of this motor, finite element method is used. The simulation result suggests, an average torque of 3.1 Nm per electric cycle and ripple of 5Nm. The maximum magnetic field interaction happens the highest at angle 2.75o from its starting point. Duty cycle effect is observed to see the correlation of duty cycle and developed torque. 22% duty cycle is chosen as most suitable choice to drive switched reluctance model due to its optimal torque ripple characteristics. It is concluded then, the characteristic of this simulation is valid for further study of this machine.

Keywords: Switched Reluctance Motor, Rotor Shape, Finite Element Method

Topic: Electric System, Drives, Motors, Machinery