Abstract：Permanent magnet flux switching linear machines(PMFSLM) have the advantages of conventional PM linear machines, and more importantly, they possess the unique merit of low cost. Therefore, they have gained great application potentials. In this paper, basic structure and operation principle of the PMFSLM are briefly described, and optimization of dimensional parameters of the primary and secondary cores is recommended to reduce the back EMF harmonics and the thrust force ripple, whilst magnetic bridge is utilized to enhance the field weakening capability and the primary core ruggedness. Furthermore, techniques of suppressing the cogging torque in rotary machines are employed to reduce the cogging effect component in the thrust force ripple of PMFSLM, and assistant teeth configuration is proposed to effectively reduce the end effect component in the thrust force ripple. Finally, a modular structure is presented to enhance the fault tolerance as well as the symmetry between the end coils and the inner coils of the primary.
沈建新, 王灿飞, 费伟中, 汪昱, 金孟加. 永磁开关磁链直线电机若干优化设计方法[J]. 电工技术学报, 2013, 28(11): 1-8.
Shen Jianxin, Wang Canfei, Fei Weizhong, Wang Yu, Jin Mengjia. Some Optimal Design Methods for Permanent Magnet Flux Switching Linear Machines. Transactions of China Electrotechnical Society, 2013, 28(11): 1-8.
[1] Wang Canfei, Shen Jianxin, Wang Lili, et al. A novel permanent-magnet flux-switching linear motor[C]. Proceedings of IET International Conference on Power Electronics, Machines and Drives, London, UK, 2008. [2] 王灿飞. 永磁开关磁链直线电机研究[D]. 杭州: 浙江大学, 2012. [3] Zhu Z Q, Chen X, Chen J T, et al. Novel linear fault-tolerant flux-switching permanent-magnet machines[C]. Proceedings of the 11th International Conference on Electrical Machines and Systems, Beijing, China, 2008. [4] Jin M J, Wang C F, Shen J X, et al. A modular permanent-magnet flux-switching linear machine with fault-tolerant capability[J]. IEEE Transactions on Magnetics, 2009, 45(8): 3179-3186. [5] Wang C F, Shen J X, Wang Y, et al. A new method for reduction of detent force in permanent magnet flux-switching linear motors[J]. IEEE Transactions on Magnetics, 2009, 45(6): 2843-2846. [6] Min W, Chen J T, Zhu Z Q, et al. Optimization and comparison of novel E-core and C-core linear switched flux PM machines[J]. IEEE Transactions on Magnetics, 2011, 47(8): 2134-2141. [7] Krop D C J, Encica L, Lomonova E A. Hybrid modeling method for the analysis of a linear flux switching machine[C]. Proceedings of the 14th Biennial IEEE Conference on Electromagnetic Field Computation, Chicago, USA, 2010. [8] Krop D C J, Encica L, Lomonova E A. Analysis of a novel double sided flux switching linear motor topology[C]. Proceedings of the 19th International Conference on Electrical Machines, Rome, Italy, 2010. [9] Wang C F, Shen J X. A method to segregate detent force components in permanent magnet flux- switching linear machines[J]. IEEE Transactions on Magnetics, 2012, 48(5): 1948-1955. [10] Wang J B, Wang W Y, Atallah K, et al. Design considerations for tubular flux-switching PM machines[J]. IEEE Transactions on Magnetics, 2008, 44(11): 4026-4032. [11] Wang J B, Wang W, Clark R, et al. A tubular flux-switching permanent magnet machine[J]. Journal of Applied Physics, 2008, 103: 07F105-1-3. [12] Rauch S E, Johnson L J. Design principles of the flux switch alternator[J]. AIEE Trans, 1955, 74III: 1261-1268. [13] Hoang E, Ben Ahmed A H, Lucidarme J. Switching flux permanent magnet polyphased synchronous machines[C]. Proceedings of the 7th European Conference on Power Electronics and Applications, Brussels, Belgium, 1997. [14] Zhu Z Q. Switched flux permanent magnet machines-innovation continues[C]. Proceedings of the 14th International Conference on Electrical Machines and Systems, Beijing, China, 2011. [15] Shen J X, Fei W Z. Permanent magnet flux switching machines - topologies, analysis and optimization[C]. Proceedings of the 4th International Conference on Power Engineering, Energy and Electrical Drives, Istanbul, Turkey, 2013. [16] 汪昱. 永磁开关磁链电机结构与控制的研究[D]. 杭州: 浙江大学, 2011. [17] Fei W Z, Shen J X. Comparative study and optimal design of PM switching flux motors[C]. Proceedings of 2006 International Universities Power Engineering Conference, Newcastle Upon Tyne, UK, 2006. [18] 费伟中. 三相永磁开关磁链电机的研究[D]. 杭州: 浙江大学, 2006. [19] Shi D, Wang C F, Li P, et al. Torque ripple analysis of an IPM ac motor[C]. Proceedings of the 7th International Conference and Exhibition on Ecological Vehicles and Renewable Energies, Monte Carlo, Monaco, 2012. [20] Janssen J L G, Paulides J J H, Lomonova E A, et al. Cogging force reduction in tubular permanent magnet actuators[C]. Proceedings of IEEE International Electrical Machines and Drives Conference, Antalya, Turkey, 2007. [21] Jin M J, Wang Y, Shen J X, et al. Cogging torque suppression in a permanent-magnet flux-switching integrated-starter-generator[J]. IET Electric Power Applications, 2010, 4(8): 647-656. [22] Fei W Z, Luk P C K, Shen J X. Torque analysis of permanent magnet flux switching machines with rotor step skewing[J]. IEEE Transactions on Magnetics, 2012, 48(10): 2664-2673.
2013, Vol. 28 
