Design and Optimization of a High-Speed Switched Reluctance Motor

Stefan Kocan, Pavol Rafajdus, Ronald Bastovansky, Richard Lenhard and Michal Stano
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Stefan Kocan: Department of Power Systems and Electric Drives, Faculty of Electrical Engineering and Information Technology, University of Zilina, 010 26 Žilina, Slovakia
Pavol Rafajdus: Department of Power Systems and Electric Drives, Faculty of Electrical Engineering and Information Technology, University of Zilina, 010 26 Žilina, Slovakia
Ronald Bastovansky: Department of Design and Machine Elements, Faculty of Mechanical Engineering, University of Zilina, 010 26 Žilina, Slovakia
Richard Lenhard: Department of Power Engineering, Faculty of Mechanical Engineering, University of Zilina, 010 26 Žilina, Slovakia
Michal Stano: Department of Power Systems and Electric Drives, Faculty of Electrical Engineering and Information Technology, University of Zilina, 010 26 Žilina, Slovakia

Energies, 2021, vol. 14, issue 20, 1-23

Abstract: Currently, one of the most used motor types for high-speed applications is the permanent-magnet synchronous motor. However, this type of machine has high costs and rare earth elements are needed for its production. For these reasons, permanent-magnet-free alternatives are being sought. An overview of high-speed electrical machines has shown that the switched reluctance motor is a possible alternative. This paper deals with design and optimization of this motor, which should achieve the same output power as the existing high-speed permanent-magnet synchronous motor while maintaining the same motor volume. The paper presents the initial design of the motor and the procedure for analyses performed using analytical and finite element methods. During the electromagnetic analysis, the influence of motor geometric parameters on parameters such as: maximum current, average torque, torque ripple, output power, and losses was analyzed. The analysis of windage losses was performed by analytical calculation. Based on the results, it was necessary to create a cylindrical rotor shape. The rotor modification method was chosen based on mechanical analysis. Using thermal analysis, the design was modified to meet thermal limits. The result of the work was a design that met all requirements and limits.

Keywords: high-speed motor; switched reluctance motor; finite element method; electromagnetic analysis; mechanical analysis; thermal analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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