Segmental Stator as a Fault Tolerant for 12Slot-12Pole Switched Flux Permanent Magnet Machine

Abstract

This paper explains the high reliability of a segmental stator for fault-tolerant of Switched-Flux Permanent Magnet Machines (SFPMMs). The advantage of SFPMMs when compared to induction machines (IMs) and switch reluctance machines (SRMs), is because it has the most power dense, excellent overload capability and the machine structure is designed to limit fault current. High power and torque output give reasons to the SFPMM to be solely selected to obtain a full torque needed and high-power factor at high speed region compared to SRM which have a limited torque, power and low maximum speed operation. Therefore, the theoretical and technical literature of the common cause of electric motor are discussed. In this paper, it is explained briefly about the proposed segmental stator 12Slot-12Pole SFPMM, flux linkage analysis, back-emf, cogging torque, torque and power output performance in 30Arms/mm2 armature current density. Further-more, this paper explains the advantages of segmental stator specifically as fault tolerance in stator winding such as line-to-line, line-to-ground and three phase faults. Moreover, this paper discussed about the source of failure for the machine itself and what is the minimum reliability requirements of a fault-tolerant machine.