Modeling and simulation of electromagnetic torque in a fault tolerant brushless PMAC motor drive

Abstract

This paper examines the torque production in two different fault-tolerant motor configurations, which include single and dual motor modules on a common shaft, each with three isolated windings. In the paper, the proposed fault tolerant motor drive configurations are modeled and simulated to study possible faults and their impacts on electromagnetic torque production. The operating characteristics of single and dual motor configurations have also been compared. In addition, the remedial strategies to reduce the torque ripple and to increase the average output torque under selected faulty operating conditions have been investigated.