Reduction of Cogging Torque by Notching Groove on Magnets in SMPMSM

Autor:	Xiaohua Bao, Jinlong Fang, Wei Xu, Tao Hong, Yixiang Xu
Rok vydání:	2019
Předmět:	Materials science business.industry Cogging torque Physics::Optics Structural engineering Forging Finite element method Computer Science::Other Quantitative Biology::Quantitative Methods Notching Magnet Torque business Reduction (mathematics) Groove (engineering)
Zdroj:	2019 22nd International Conference on Electrical Machines and Systems (ICEMS).
Popis:	Surface mount permanent magnet synchronous motor (SMPMSM) is widely used in industrial fields. In order to improve its working accuracy, the cogging torque needs to be reduced. This paper studies the effect of notching groove on magnets on cogging torque in SMPMSM. The general formula of cogging torque under arbitrary groove on permanent magnets is derived by the energy method. Based on the equivalent structure of rectangular grooves and Fourier expansion, the formulae of the torque under single rectangular groove and double rectangular groove are derived. To get an optimal solution, the cogging torque of SMPMSM under notching single and double groove with different sizes is analyzed by using Finite Element Method. The research shows that the cogging torque of SMPMSM can be effectively reduced by notching auxiliary groove on permanent magnet.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::702765ccf6d7e2cdf5072b62f18d9465 https://doi.org/10.1109/icems.2019.8921986 Zobrazit plný text záznamu