Calculation and Comparison of Rotor End Factors of Solid Rotor Induction Machines with Axial Slits
Huang Ziguo
1.State Key Laboratory of Control and Simulation of Power System and Generation EquipmentsDepartment of Electrical Engineering Tsinghua University Beijing 100084 China 2.Navy Submarine Academy Qingdao 266100 China
Abstract：When the nonlinearity of rotor magnetic circuit is taken into account,the huge computation of 3D finite element calculation of slitted solid rotor magnetic field is unavoidable.To simplify the calculation,the 2D FEM combined with end factors of smooth solid rotor is adopted generally.However,the calculation error increases along with the increase of slip when applying end factors of smooth solid rotor for the slitted rotor.This paper puts forward a new rotor end factor for slitted solid rotor using an approximate calculation method due to the eddy current distribution in the slitted rotor.With the 2D FEM and the raised end factor,the effect of saturation in both stator and rotor core and the axial finite length of rotor are taken into account.The calculation results using different smooth rotor end factors and the raised slitted rotor end factor are compared with each other.And the simulation results using slitted rotor end factor agree well with the experimental test results on model machines with different number of rotor slitted.This indicates the raised slitted rotor end factor is suitable for the parameter calculation and optimal design of slitted solid-rotor induction machine.
黄子果，王善铭，孙宇光，曹海翔，杨占录. 开槽实心转子电机转子端部系数的计算与比较[J]. 电工技术学报, 2017, 32(15): 59-65.
Huang Ziguo. Calculation and Comparison of Rotor End Factors of Solid Rotor Induction Machines with Axial Slits. Transactions of China Electrotechnical Society, 2017, 32(15): 59-65.
[1] Gerada D,Mebarki A,Brown N L,et al.High-speed electrical machines:technologies,trends,and developments[J].IEEE Transactions on Industrial Electronics,2014,61(6):2946-2959. [2] 张凤阁,杜光辉,王天煜,等.高速电机发展与设计综述[J].电工技术学报,2016,31(7):1-18. Zhang Fengge,Du Guanghui,Wang Tianyu,et al.Review on development and design of high speed machines[J].Transactions of China Electrotechnical Society,2016,31(7):1-18. [3] Arkkio A,Jokinen T,Lantto E.Induction and permanent-magnet synchronous machines for high-speed applications[C]//Proceedings of the Eighth International Conference on Electrical Machines and Systems,2005,2:871-876. [4] Pyrhonen J,Nerg J,Kurronen P,et al.High-speed high-output solid-rotor induction-motor technology for gas compression[J].IEEE Transactions on Industrial Electr-onics,2010,57(1):272-280. [5] 冯尔健.铁磁体实心转子异步电机理论与计算[M].北京:科学出版社,1980. [6] Aho T,Nerg J,Pyrhonen J.The effect of the number of rotor slits on the performance characteristics of medium-speed solid rotor induction motor[C]//The 3rd IET International Conference on Power Electronics,Machines and Drives,2006:515-519. [7] 唐孝镐.实心转子异步电机及其应用[M].北京:机械工业出版社,1991. [8] Dorairaj K R,Krishnamurthy M R.Polyphase induction machine with a slitted ferromagnetic rotor:II-analysis[J].IEEE Transactions on Power Apparatus & Systems,1967,PAS-86(7):844-855. [9] Zaim M E.Non-linear models for the design of solid rotor induction machines[J].IEEE Transactions on Magnetics,1999,35(3):1310-1313. [10]Gessese Y,Binder A.Axially slitted,high-speed solid-rotor induction motor technology with copper end-rings[C]//International Conference on Electrical Machines and Systems,2009:1-6. [11]Jagiela M,Garbiec T.Evaluation of rotor-end factors in solid-rotor induction motors[J].IEEE Transactions on Magnetics,2012,48(1):137-142. [12]O′Kelly D.Theory and performance of solid-rotor induction and hysteresis machines[J].Proceedings of the Institution of Electrical Engineers,1976,123(5):421-428. [13]Gibbs W J.Induction and synchronous motors with unlaminated rotors[J].Journal of the Institution of Electrical Engineers-Part II:Power Engineering,1948,95(46):411-420. [14]Russel R L,Norsworthy K H.Eddy currents and wall losses in screened-rotor induction motors[J].Procee-dings of the IEE-Part A:Power Engineering,1958,105(20):163-175. [15]Yee H.Effects of finite length in solid-rotor induction machines[J].Proceedings of the Institution of Electrical Engineers,1971,118(8):1025-1033. [16]傅丰礼.异步电动机设计手册[M].北京:机械工业出版社,2002. [17]兵器工业无损检测人员技术资格鉴定考核委员会.常用钢材磁特性曲线速查手册[M].北京:机械工业出版社,2003. [18]黄子果,王善铭,倪守辉.光滑实心转子异步电机等效电路参数的二维计算方法[J].中国电机工程学报,2016,36(9):2505-2512. Huang Ziguo,Wang Shanming,Ni Shouhui.2D calcul-ation methods of equivalent-circuit parameters in smooth solid rotor induction machines[J].Proceedings of the CSEE,2016,36(9):2505-2512.
2017, Vol. 32 
