Magnet Skew in Cogging Torque Minimization （磁铁斜齿轮转矩极小化）.pdfVIP

Proceedings of the 2008 International Conference on Electrical Machines Paper ID 1186 Magnet Skew in Cogging Torque Minimization of Axial Gap Permanent Magnet Motors M. Aydin maydin@ieee.org †Dept. of Mechatronics Engineering Kocaeli University Umuttepe Yerleskesi, Eski Istanbul Yolu, 10. km 41380, Izmit, Kocaeli, TURKEY Abstract – Several cogging torque minimization techniques However, their impact on manufacturing cost may be high and exist for permanent magnet (PM) machines, and these are well therefore, alternative low cost cogging torque minimization documented in earlier studies. However, the majority are used to techniques for AFPM machines are desirable. reduce the cogging torque in radial flux PM (RFPM) machines. In this paper, cogging torque minimization techniques for axial-flux In this paper, the utility of various cogging torque PM (AFPM) disk machines are briefly reviewed, and one of the minimization techniques for AFPM machines is examined by foremost cogging torque minimization method, magnet skew, is 3-D finite element analysis. The cogging torque minimization examined in detail. Various magnet skewing methods, types, and methods are categorized in two main groups: Stator side effects on the machine perf