volume | PIER Journals

Abstract

Fault Tolerant Permanent Magnet Vernier Rim-Driven Machines (FTPMV-RDM) have attracted much attention due to the advantages of high torque density and good fault tolerant capability. However, the traditional FTPMV-RDMs have a lower power factor which limits their broad application in marine electric propulsion system. This paper proposes a high power factor FTPMV-RDM topology in which the flux-concentrating Halbach array magnets are mounted on a rotor, and isolation slots are arranged on the stator teeth. A preliminary design of the FTPMV-RDM is presented. To tackle the problems of large computational burden and poor accuracy in traditional multi-objective genetic optimization algorithms, a novel optimization design method combining sensitivity-based optimization with sensitivity analysis is proposed. The performance of the machine is analyzed using Finite Element Analysis (FEA), and the results show that the proposed machine topology features a high power factor, high torque density, and strong fault-tolerant capability.

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doi:10.2528/PIERM21082606

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doi:10.2528/PIERC23052801

Mr. Kun Zang

Dr. Yaqian Cai

Professor Jingwei Zhu

Dr. Haibo Liao

Dr. Mingxuan Li

Dr. Qing Liu