Abstract：In order to suppress the inrush problems during the power switching of induction motor as much as possible under the different alternate power sources, it is necessary to select the optimal power switching method and determine the best switching moment with the consideration of the action time of the switch. Therefore, the stator residual voltage after the power off, the voltage difference and the phase-angle difference between the residual voltage and the voltage of the different alternate sources should be quantificationally researched more accurately. Firstly, it is found that there are two operation stages of motor based on the test wave of stator currents after the power off, that is, the short stator two-phase asymmetrical transient process and the rotor freedom operation. And the result approves inevitably the accurate quantitative calculation of the stator residual voltage. Then, the analytical derivation of two stages of the power-off process is made respectively in depth based on the symmetrical and asymmetrical vector models of motor. And the analytical expression of the stator residual voltage is obtained. Finally, the stator residual voltage, the voltage difference and the phase- angle difference between the residual voltage and the voltage of the different alternate sources are studied with emphasis. As a result, the optimal power switching strategy and the best switching moment are determined. And the drawed conclusions are verified to be correct and feasible by the test results of the power switching of induction motor.
崔学深,张自力,李和明,贾英,张晓东. 感应电机电源切换中残压和电压差的研究及最优切换策略[J]. 电工技术学报, 2015, 30(2): 162-171.
Cui Xueshen,Zhang Zili,Li Heming,Jia Ying,Zhang Xiaodong. Residual Voltage, Voltage Difference and Optimal Switching Strategy During the Power Switching of Induction Motors. Transactions of China Electrotechnical Society, 2015, 30(2): 162-171.
[1] Faiz J, Ghaneei M, Keyhani A. Performance analysis of fast reclosing transients in induction motors[J]. IEEE Transactions on Energy Conversion, 1999, 14(1): 101-107. [2] Beckwith T R, Hartmann W G. Motor bus transfer: considerations and methods[J]. IEEE Transactions on Industry Applications, 2006, 42(2): 602-611. [3] Yalla M V V S. Design of a high-speed motor bus transfer system[J]. IEEE Transactions on Industry Applications, 2010, 46(2): 612-619. [4] Das J C. Effects of momentary voltage dips on the operation of induction and synchronous motors[J]. IEEE Transactions on Industry Applications, 1990, 26(4): 711-718. [5] Higgins T A, Snider W L, Young P L, et al. Report on bus transfer. I. assessment and application[J]. IEEE Transactions on Energy Conversion, 1990, 5(3): 462- 469. [6] 高景德, 王祥珩, 李发海. 交流电机及其系统的分析[M]. 北京: 清华大学出版社, 1992. [7] Woudstra J B, Deleroi W. Re-switching of an induc- tion motor with remainder flux[C]. Third International Conference on Power Electronics and Variable-Speed Drives, London, 1988: . [8] Daugherty Roger H. Bus transfer of AC induction motors: a perspective[J]. IEEE Transactions on Industry Applications, 1990, 26(5): 935-943. [9] Shaltout A, Omoush M A L. Reclosing torques of large induction motors with stator trapped flux[J]. IEEE Transactions on Energy Conversion, 1996, 11(1): 84-90. [10] 邓建国. 三相异步电动机瞬间断电重合闸瞬态分析[J]. 电力自动化设备, 2004, 24(1): 37-41. Deng Jianguo. Transient analysis on reclosing of three-phase asynchronous motor[J]. Electric Power Automation Equipment, 2004, 24(1): 37-41. [11] Pillay P, Sabur S M A. Use of reduced order models to calculate reclosing transients in a refinery[C]. Thirtieth Industry Applications Society Annual Meeting, Orlando, USA, 1995, 3: 2180-2188. [12] Hornak D L, Zipse Donald W. Automated bus transfer control for critical industrial processes[J]. IEEE Transactions on Industry Applications, 1991, 27(5): 862-871. [13] Cui Xueshen, Yang Yulei, Zhou Zhenhua, et al. The research on residual voltage of asynchronous motors and its impact on power restoration[C]. Third Interna- tional Conference on Electric Utility Deregulation and Restructuring and Power Technologies, NanJing, China, 2008. [14] 高吉增, 杨玉磊, 崔学深. 感应电动机失电残压的研究及其对重合过程的影响[J]. 电力系统保护与控制, 2009, 37(4): 45-48. Gao Jizeng, Yang Yulei, Cui Xueshen. The research of the residual voltage of induction motor after dumping and its influence during restoration[J]. Power System Protection and Control, 2009, 37(4): 45-48. [15] 李和明, 张自力, 崔学深, 等. 晶闸管-电动机系统不对称瞬态建模及解析[J]. 电工技术学报, 2013, 28(8): 241-249. Li Heming, Zhang Zili, Cui Xueshen, et al. Asymme- trical transient modeling and analytical research of SCR-motor systems[J]. Transactions of China Electro- technical Society, 2013, 28(8): 241-249. [16] B 阿德金斯, R G 哈利. 交流电机统一理论[M]. 唐任远, 朱维衡译. 北京: 机械工业出版社, 1980. [17] 李卫国, 罗应立, 邱宇峰, 等. 高压固态切换开关在切换不同属性负载时的残压研究[J]. 中国电机工程学报, 2013, 33(15): 164-172. Li Weiguo, Luo Yingli, Qiu Yufeng, et al. Research on residual voltages of high-voltage solid-state transfer switch transferring different characteristic loads[J]. Proceedings of the CSEE, 2013, 33(15): 164-172. [18] 汤蕴璆, 张奕黄, 范瑜. 交流电机动态分析[M]. 北京: 机械工业出版社, 2008. [19] 崔学深. 感应电机电源软投入相关理论及节能控制新技术的研究[D]. 北京: 华北电力大学, 2009. [20] Novotny D W, Lipo T A. Vector control and dynamics of AC drives[M]. New York：Oxford Clarendon Press, 1996. [21] 罗炜, 崔学深, 罗应立. 感应电机不对称暂态分析中一类一元三次特征方程及其近似求解[J]. 中国电机工程学报, 2008, 28(27): 126-130. Luo Wei, Cui Xueshen, Luo Yingli. Approximate solutions of a class of cubic characteristic equations in asymmetric transient analysis of induction machines [J]. Proceedings of the CSEE, 2008, 28(27): 126-130.
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