High Speed Motor Loss Analysis and Temperature Field Calculation
Zhang Chenxi1, Chen Lifang1, Wang Weimin1, Bin Guangfu2
1. Mechanical and Electrical Engineering College, Beijing University of Chemical Technology,Beijing 100029; 2. Mechanical and Electrical Engineering College Hunan University of Science and Technology, Xiangtan, Hu’nan 411201;
Abstract Due to high loss density, cooling difficulties, high speed asynchronous motors are easy to occur reduction of winding insulation life and even failure. So accurately calculating motor loss and predicting the temperature field are particularly important. In this paper, a high speed asynchronous motor with a rated speed of 40000r/min is designed for studying, and its loss is analyzed wholly. Based on the method of magnetic-heat coupled FEM, the whole temperature field of the motor is calculated accurately, and the results of temperature field are compared with the experimental results. The research has shown that: the rotor's iron loss of the high speed asynchronous motor can be ignored, and after the rotor runs above a certain speed, its temperature rises with exponential rule, and temperature monitoring is also needed. Meanwhile, the method of magnetic-heat coupled has a certain accuracy.
Zhang Chenxi,Chen Lifang,Wang Weimin等. High Speed Motor Loss Analysis and Temperature Field Calculation[J]. Electrical Engineering, 2017, 18(5): 44-50.
[1] 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. [2] 王凤翔. 高速电机的设计特点及相关技术研究[J]. 沈阳工业大学学报, 2006, 28(3): 258-264. [3] Steinmetz C P. A steinmetz contribution to the AC power revolution[J]. proc IEEE, 1984, 72: 196-221. [4] G. Bertotti. General properties of power loss in soft ferromagnetic materials[J]. IEEE trans, 1988, 24: 621-630. [5] Bo He, Ping Zhou, Ding sheng Lin, et al. The second order finite element analysis of eddy currents based on the T-Ω method[J]. Progress in electromagnetics Research M, 2015, 41: 159-166. [6] Aldo B, Andrea C, Mario L, et al. A simplified thermal model for variable-speed-self-cooled industrial indu- ction motor[J]. IEEE Transactions on Industry Appli- cations, 2003, 39(4): 945-952. [7] 孔晓光, 王凤翔, 刑军强, 等. 高速永磁电机的损耗计算和温度场分析[J]. 电工技术学报, 2012, 27(9): 166-172. [8] 陈世坤. 电机设计[M]. 2版. 北京: 机械工业出版社, 1990. [9] Wang F, Xu Y, Kong X, et al. Study on core loss of high speed PM machine[C]//IEEE international con- ference, 2009: 1-4. [10] Burton R A, Steph H E. Thermally activated seizure of angular contact bearing[J]. ASLE Trans, 1967, 10: 408-417.
2017, Vol. 18 
