High-speed permanent magnet motor is widely used for its excellent performance. With the development of technology, the motor needs be designed to meet more features, such as low torque ripples, low noise, low loss, and so on. This paper focuses on the design of a 500W, 120000rpm high-speed permanent magnet motor, and the torque ripples effected by two pole-slot combinations are analyzed by both the theoretical solution and the finite element analysis with Fourier transformation. It is clarified that because of the different pole pairs and different magnetizations, the electromagnetic torque of 4p6s is smaller than that of 2p3s, while the ripple torque of 4p6s is larger than that of 2p3s. In addition, as the width of the slot opening increasing, the torque ripples of 4p6s are always greater than that of 2p3s.
Design and Analysis of a 500W 120000rpm High-Speed Permanent Magnet Motor
Li, Zhaokai
2023-01-01
Abstract
High-speed permanent magnet motor is widely used for its excellent performance. With the development of technology, the motor needs be designed to meet more features, such as low torque ripples, low noise, low loss, and so on. This paper focuses on the design of a 500W, 120000rpm high-speed permanent magnet motor, and the torque ripples effected by two pole-slot combinations are analyzed by both the theoretical solution and the finite element analysis with Fourier transformation. It is clarified that because of the different pole pairs and different magnetizations, the electromagnetic torque of 4p6s is smaller than that of 2p3s, while the ripple torque of 4p6s is larger than that of 2p3s. In addition, as the width of the slot opening increasing, the torque ripples of 4p6s are always greater than that of 2p3s.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
