1. Key Laboratory of Power Electronics and Electric Drive Institute of Electrical Engineering Chinese Academy of Science Beijing 100190 China; 2.University of Chinese Academy of Sciences Beijing 100049 China
Abstract：Compared with general three phase machine, the direct-drive multi-phase permanent magnet synchronous machine has the characteristics of more phase number, variety of pole/slot matches and winding configurations, variety of neutral point connections and PWM control modes. These characteristics make the stator current and magnetic field very complex, and the performance has some particularity. So it is necessary to study the main performance of the machine. In this paper, the relations between torque ripple, losses and harmonic magnetic field are analyzed. The finite element analysis model of direct-drive multi-phase permanent magnet synchronous machine is established by the software ANSOFT. The impact of these characteristics on the torque ripple and losses is studied. All studies show that with the increase of the phase number, pole/slot number and reasonable selection of neutral point connection mode the harmonic magnetic field, torque ripple and losses of machine can be reduced effectively.
[1] 李亚旭, 翁存海. 西门子公司潜艇推进用PERMASYN电动机[J]. 船电技术, 1999(6): 47-5. Li Yaxu, Weng Cunhai. Submarine propulsion motor of siemens-PERMASYN[J]. Marine Electric & Electronic Engineering, 1999 (6): 47-53. [2] 马伟明. 舰船电气化与信息化复合发展之思考[J]. 海军工程大学学报, 2010, 22(5): 1-4. Ma Weiming. On comprehensive development of electrization and informationization in naval ships[J]. Journal of Naval University of Engineering, 2010, 22(5): 1-4. [3] Smith S. Developments in power electronics machines and drives [J]. IEE Power Engineering Journal, 2002, 1(16): 13-17. [4] Gritter D J, Kalsi S S, Henderson N. Variable speed electric drive options for electric ships[C]. IEEE Electric Ship Technologies Symposium, Philadelphia, PA, 2005: 347-354. [5] Hodge C G, Williamson S, Smith A C. Direct drive marine propulsion motors[C]. International Conference on Electrical Machines, Bruges, Belgium, 2002: CD-ROM paper 087. [6] Lipo T A. Electric drives technology-part way to where[C]. IEEE International Electric Machines and Drives Conference Record, Seattle, 1999: 1-3. [7] Brazhinkov A V, Dovzhenko N N. Control potentials and advantages of multiphase AC drives[C]. IEEE Power Electronics Specialists Conference, Fukuoka, 1998: 2108-2114. [8] Yuriy Kats. Adjustable-speed drives with multiphase motors[C]. IEEE International Electric Machines and Drives Conference Record. Milwaukee, 1997: TC2/4. 1 - TC2/4. 3. [9] 庄朝晖, 熊有伦, 马挺. 多相感应电机变频调速系统——回顾、现状及展望[J]. 电气传动, 2001(2): 3-4. Zhuang Zhaohui, Xiong Youlun, Ma Ting. Multiphase Variable-speed induction machine drives system-state of arts and trends[J]. Proceedings of the Electric Drive, 2001(2): 3-4. [10] 王晋. 多相永磁电机的理论分析及其控制研究[D]. 武汉: 华中科技大学, 2010. [11] 夏冠博, 梁翰荪. 船舶交流永磁同步电力推进[J]. 武汉造船, 1996(5): 21-24. Xia Guanbo, Liang Hansun. Ship AC permanent magnet synchronous electric propulsion[J]. Wuhan Shipbuilding, 1996(5): 21-24. [12] 任修明, 杨德望. 船舶交流永磁推进电机的研究[J]. 船舶科学技术, 2003, 25(1): 37-41. Ren Xiuming, Yang Dewang. The research on AC PM propulsion motor for ships[J]. Ship Science and Technology, 2003, 25(1): 37-41. [13] Leila P, Hamid A T. Five-phase permanent-magnet motor drives[J]. IEEE Transactions on Industry Applications, 2005, 41(1): 30-37. [14] Wang Youlong, Wen Xuhui. Analysis of multi-phase permanent magnet motors with concentrated non- overlapping stator windings[C]. International Conference on Electrical Machines and Systems, 2010: 1088- 1093. [15] 薛山. 多相永磁同步电机驱动技术研究[D]. 北京: 中国科学院电工研究所, 2005.
2014, Vol. 29 
