This paper aims to provide design concepts of axial flux permanent magnet(AFPM) machines in specific situations. Due to the unique profile constraints, some dimensions such as magnet radial length and axial thickness, as well as stator tooth tip thickness are parametrically investigated. Three unique configurations of AFPM machine are proposed, including the axial flux internal rotor (AFIR) machine with single rotor sandwiched between two stators, and the TORUS-NN and the TORUS-NS machines with single stator sandwiched between two rotors. Electromagnetic performance as well as stator vibration modes are compared. Both theoretical analysis and three-dimensional(3-D) finite element analysis (FEA) are made to verify the optimization.
李华阳,沈建新. 不同结构轴向磁通永磁电机的有限元设计与对比研究[J]. 电工技术学报, 2015, 30(14): 32-40.
Li Huayang,Shen Jianxin. FEA-Based Design and Comparative Study of Axial Flux Permanent Magnet Machines with Various Topologies. Transactions of China Electrotechnical Society, 2015, 30(14): 32-40.
[1] K M Rahman, N R Patel, T G Ward, et al. Application of direct-drive wheel motor for fuel cellelectric and hybrid electric vehicle propulsion system[J]. IEEE Trans. Ind. Appl . , 2006, 42(5):1185-1192.
[2] R J Wang, M J Kamper, K V Westhuizen, et al. Optimal design of a coreless stator axial flux permanent-magnet generator[J]. IEEE Trans. Magn., 2005, 41(1):55-64.
[3] B Xia, M J Jin, J X Shen, et al. Design and analysis of an air-cored axial flux permanent magnet generator for small wind power application[C]. IEEE Int. Sustainable Energy Technologies Conf., 2005.
[4] Z Q Zhu. Recent advances on permanent magnet machines[J]. Transactions of China Electrotechnical Society, 2012, 27(3):1-11.
[5] F X Wang. Application and development tendency of PM machines in wind power generation system[J]. Transactions of China Electrotechnical Society, 2012, 27(3):12-24.
[6] R L Ficheux, F Caricchi, F Crescimbini, et al. Axial flux permanent-magnet motor for direct-drive elevator systems without machine room[J]. IEEE Trans. Ind. Appl . , 2001, 37(6):1693-1701.
[7] J F Eastham, F Profumo, A Tenconi, et al. Novel axial flux machine for aircraft drive: design and modeling[J]. IEEE Trans. Magn., 2002, 38(5):3003-3005.
[8] S R Huang, J L, F Leonardi, et al. A comparison of power density for axial flux machines based on general purpose sizing equations[J]. IEEE Trans. Energy Conversion, 1999, 14(2):185-192.
[9] A Gavagnino, M Lazzari, F Profumo, et al. A com- parison between the axial flux and the radial flux structures for PM synchronous motors[C]. IEEE Int. Ind. Appl . Annual Meeting , 2001.
[10] S R Huang, M Aydin, T A Lipo. Torque quality assess- ment and sizing optimization for surface mounted permanent magnet machines[C]. IEEE Int. Ind. Appl. Society Annual Meeting , 2001.
[11] M Aydin, Z Q Zhu, T A Lipo, et al. Minimization of cogging torque in axial-flux permanent-magnet machines: design concepts[J]. IEEE Trans. Magn., 2005, 43(9): 3614-3622.
[12] S Huang, M Aydin, T A Lipo. Electromagnetic vibration and noise assessment for surface mounted PM machines [C]. Power Engineering Society Summer Meeting, 2001.
[13] C L Xia. Wind energy conversion system based on PMSG and its power converter technology[J]. Transac- tions of China Electrotechnical Society, 2012, 27(11): 1-13.
[14] W Fei, P C K Luk. Design and performance analysis of a high-speed air-cored axial-flux permanent-magnet generator with circular magnets and coils[C]. IEEE Int. Electric Machines and Drives Conf., 2009.
[15] W Wang, Z H Song, J Chen, et al. The calculation of natural frequencies of stator system and electro- magnetic acoustic noise of AFIR disc PM machine[J]. Electric Machiens And Control, 2009, 13(6):857-861.
2015, Vol. 30 
