大型潜水电机混合偏心时转子副临界振动的研究

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Abstract Due to the unbalanced magnetic pull and special environment in large submersible motors, the excitation frequency for air-gap is close to the rotor natural frequency, and the sub-critical speed may be around the rated speed. Thus the state is prone to the sub-critical rotor vibration, endanger the safe operation of the motor, and even cause an accident. In this paper, the engineering electromagnetic field theory is quoted. The calculation model of eccentricity is built. The electromagnetic force for air-gap between stator and rotor in submersible motors is deduced, and based on which, the relation between excitation frequency for electromagnetic force and natural frequency combining the FFT is obtained. Finally the 3D stress model for stator and rotor is built respectively and the rotor deflection is obtained using the analytical-finite method. Through building the 2D electromagnetic field finite model, the relations among sub-critical speed, rated speed, eccentricity, diving depth, time are discussed. The investigations in this paper support both theoretical basis in reliable operation of the machine and references in fault diagnosis of large submersible motors.

Key words： Submersible motors sub-critical speed mixed eccentricity rotor vibration diving depth

Received: 01 July 2014 Published: 10 April 2015

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TM301

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	Articles by authors
	Bao Xiaohua
	Li Fuying
	Fang Yong
	Wang Hanfeng
	Cheng Zhiheng
	Di Chong
	Liang Na

Cite this article:

Bao Xiaohua,Li Fuying,Fang Yong等. Sub-Critical Speed Vibration of Rotors for Large Submersible Motors with Mixed Eccentricity[J]. Transactions of China Electrotechnical Society, 2015, 30(6): 142-149.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I6/142

[1] Elkasabgy N M, Eastman A R, Dawson G E. Detec- tion of broker bar in the cage rotor on an induction machine[J]. IEEE Transactions on Industry Applica- tions, 1992, 28(1): 165-171.
[2] 鲍晓华, 吕强. 感应电机气隙偏心故障研究综述及展望[J]. 中国电机工程学报, 2013, 33(6): 93-100. Bao Xiaohua, Lü Qiang. Review and prospect of air-gap eccentricity faults in induction machines[J]. Proceedings of the CSEE, 2013, 33(6): 93-100.
[3] Xia Changliang, Song Zhanfeng. Wind energy in China: current scenario and future perspectives[J]. Renewable and Sustainable Energy Reviews, 2009, 13(8): 1966-1974.
[4] 赵向阳, 葛文韬. 基于定子电流监测无刷直流电动机转子动态偏心的故障模型仿真研究[J]. 中国电机工程学报, 2011, 31(36): 124-130. Zhao Xiangyang, Ge Wentao. Simulation research of fault model of detecting rotor dynamic eccentricity in brushless DC motor based on motor current signature analysis[J]. Proceedings of the CSEE, 2011, 31(36): 124-130.
[5] Faiz J, Ebrahimi B M, Akin B, et al. Dynamic analysis of mixed eccentricity signatures at various operating points and scrutiny of related indices for induction motors[J]. IET Electric Power Applications, 2010, 4(1): 1-16.
[6] Li Xiaodong, Wu Qing, Nandi S. Performance analysis of a three-phase induction machine with inclined static eccentricity[J]. IEEE Transactions on Industry Applications, 2007, 43(2): 531-541.
[7] Hossein Torkaman, Ebrahim Afjei, Peyman Yadegari. Static, dynamic, and mixed eccentricity faults diagnosis in switched reluctance motors using transient finite element method and experiments[J]. IEEE Transactions on Magnetics, 2012, 48(8): 2254-2264.
[8] Ebrahimi B M, Faiz J. Diagnosis, performance analysis of three-phase permanent magnet synchronous motors with static, dynamic and mixed eccentricity[J]. IET Electr. Power Appl., 2010, 4(1): 53-66.
[9] Dorrell D G, Thomson W T, Roach S. Analysis of airgap flux, current, and vibration signals as a function of the combination of static and dynamic airgap eccentricity in 3-phase induction motors[J]. IEEE Transactions on Industry Applications, 1997, 33(1): 24-34.
[10] 姚志远, 杨东, 赵淳生. 杆结构直线超声电机的结构设计和功率流分析[J]. 中国电机工程学报, 2009, 29(24): 56-60. Yao Zhiyuan, Yang Dong, Zhao Chunsheng. Structure design and power flow analysis of bar-structure linear ultrasonic motors[J]. Proceedings of the CSEE, 2009, 29(24): 56-60.
[11] 莫岳平, 胡敏强, 徐志科, 等. 超声波电机振动模态有限元分析[J]. 中国电机工程学报, 2002, 22(11): 93-97. Mo Yueping, Hu Minqiang, Xu Zhike, et al. The finite element analysis on the vibration mode of ulirasonic motor[J]. Proceeding of the CSEE, 2002, 22(11): 93-97.
[12] Srinivas K N, Arumugam R. Analysis and charac- terization of switched reluctance motors: part II - flow, thermal, and vibration analyses[J]. IEEE Transac- tions on Magnetics, 2005, 41(4): 1321-1332.
[13] 何成兵, 顾煜炯, 邢诚. 短路故障时汽轮发电机组轴系弯扭耦合振动分析[J]. 中国电机工程学报, 2010, 30(32): 84-90. He Chengbing, Gu Yüjiong, Xing Cheng. Coupled flexural and torsional vibrations analysis of turbine generator shaft systems caused by circuit fault[J]. Proceedings of the CSEE, 2010, 30(32): 84-90.
[14] 孙晓东, 陈龙, 杨泽斌, 等. 考虑偏心及绕组耦合的无轴承永磁同步电机建模[J]. 电工技术学报, 2013, 28(3): 63-70. Sun Xiaodong, Chen Long, Yang Zebin, et al. Modeling of a bearingless permanent magnet synchronous motor considering rotor eccentricity and coupling relationship of windings[J]. Transactions of China Electrotech- nical Society, 2013, 28(3): 63-70.
[15] 仇志坚, 邓智泉, 王晓琳, 等. 计及偏心及洛仑兹力的永磁型无轴承电机建模与控制研究[J]. 中国电机工程学报, 2007, 27(9): 64-70. Qiu Zhijian, Deng Zhiquan, Wang Xiaolin, et al. Study on the modeling and control of a permanent magnet type bearingless motor considering rotor eccentricity and Lorenz force[J]. Proceedings of the CSEE, 2007, 27(9): 64-70.
[16] Dooso Hyun, Sungho Lee, Jongman Hong, et al. Detection of airgap eccentricity for induction motors using the single-phase rotation test[J]. IEEE Transac- tions on Energy Conversion, 2012, 27(3): 689-696.
[17] Lamamura B A T, et al. Study of static and dynamic eccentricity of a synchronous generator using 3-D FEM[J]. IEEE Transactions on Magnetics, 2010, 46(8): 3516-3519.
[18] 孙一航, 武建文, 廉世军, 等. 结合经验模态分解能量总量法的断路器振动信号特征向量提取[J]. 电工技术学报, 2014, 29(3): 228-236. Sun Yihang, Wu Jianwen, Lian Shijun, et al. Extraction of vibration signal feature vector of circuit breaker based on empirical mode decomposition amount of energy[J]. Transactions of China Electrotechnical Society, 2014, 29(3): 228-236.
[19] Ebrahimi Bashir Mahdi, et al. Advanced eccentricity fault recognition in permanent magnet synchronous motors using stator current signature analysis[J]. IEEE Transactions on Industrial Electronics, 2014, 61(4): 2041-2052.
[20] Kyung Ho Ha, et al. Orbital analysis of rotor due to electromagnetic force for switched reluctance motor [J]. IEEE Transactions on Magnetics, 2000, 36(4): 1407-1411.
[21] 林富生, 孟光. 有初弯的刚度非对称转子的动力学特性分析及实验研究[J]. 应用力学学报, 2002, 19(3): 96-101, 168-169. Lin Fusheng, Mengguang. The analysis and experiment of dynamics for asymmetric rotor with initial bending [J]. Chinese Journal of Applied Mechanics, 2002, 19(3): 96-101, 168-169.
[22] Subhasis Nandi, Sang Bin Lee. et al. Detection of eccentricity faults in induction machines based on nameplate parameters[J]. IEEE Transactions on Indus- trial Electronics, 2011, 58(5): 1673-1683.