Study of permanent magnet configuration in alternate circumferential and radial flux permanent magnet flux switching machines (AlCiRaF-PMFSM)

Abstract

Alternate circumferential and radial flux (AlCiRaF) is new design in PMSFM. AlCiRaF PMFSM offers high torque and power density. However, AlCiRaF PMFSM is a novel design that a good opportunity to be potential improved further. In this research, the nine design of permanent magnet configuration in AlCiRaF PMFSM is proposed to compare each performance possibilities. The configurations of permanent magnet are introduced to study the performance effect by changing the permanent magnet position which is PM-Bottom, PM-Middle and PM-Top for both circumferential and radial direction. Besides, the permanent magnet structure design will improve field winding area structure to provide space for future improvement. Weight of all the permanent magnets are estimated to be 0.5 kg altogether. Initially, design procedures of the all motor including parts drawing, material and condition setting, the properties setting are all explained. Then, coil arrangement test is conducted to perform 3 phase armature coil arrangement. Then, no load analysis is conducted to analyze cogging torque, flux linkage, flux distribution and back-EMF of motor followed by load analysis which analyze the torque speed characteristics and output power of the motor with different permanent magnet configuration. No load analysis and load analysis are conducted using finite element analysis of JMAG Designer 16.0. Finally, it is found that there is no significant difference that resulted and the best permanent magnet configuration compared to the Existing AlCiRaF PMFSM permanent magnet design is TRBC PM and MRBC PM due to the capability to produce high output torque and power based on the analysis conducted.