期刊
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
卷 68, 期 4, 页码 3446-3456出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TVT.2019.2902729
关键词
Permanent-magnet machine; vernier; torque density; power factor; design optimization
资金
- National Natural Science Foundation of China [51807082, 51777090]
- Research Fund for the 333 Project of Jiangsu Province [BRA2017388]
- Natural Science Foundation of Jiangsu Province [BK20180883]
- Natural Science Foundation of Jiangsu Higher Education Institutions [18KJB470007]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
Permanent-magnet vernier machine has an excellent potential for electric vehicles due to its desirable features of a simple mechanical structure and high torque density, whereas the poor power factor is its main drawback. In this paper, a spoke-type permanent-magnet vernier machine is designed and optimized for torque density and power factor improvement. First, the machine structure, operation principle, and sizing equation are introduced. Then, the machine is optimized by a multi-objective genetic algorithm. To enhance the optimization efficiency and accuracy, multi-level, sensitivity analysis, and approximate model technologies are employed in the optimization. It is shown that the improved torque density and power factor are achieved in the optimized machine as compared to the initial one. Finally, a prototype machine is built, and the experiments on the prototype machine are carried out to verify the design optimization.
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