Research on Temperature Calculation and Cooling System of a High-speed Magnetic Levitation Motor

Abstract

Abstract:

For high-speed magnetic levitation motor heating problem,it was established by finite element method of the motor stator heating model,which analyzed the material loss on the impact of motor stator core.Considering the friction of the rotor surface,the wind friction loss of the rotor was calculated.The harmonic currents caused by the rotor eddy current loss in high-speed magnetic levitation motor in the rotor will cause the problem of high temperature rise.The establishment of electromagnetic field equations for solving eddy current loss of rotor was obtained by analysis of the electromagnetic field equations.For the problem of rotor eddy current loss,a harmonic impedance device was used to reduce eddy current loss,which is an effective way to reduce the temperature.The results show that the impedance device can reduce motor harmonic currents and reduce the temperature effectively.

Key words: high-speed magnetic levitation motor, stator heating model, rotor eddy current loss, harmonic current, impedance device

摘要：

针对高速磁悬浮电机发热严重的问题,采用有限元方法建立了电机定子发热模型,并且分析了材料对电机铁心损耗的影响。考虑转子表面的摩擦,计算出电机转子风摩擦损耗。针对谐波电流引起的转子涡流损耗在高速磁悬浮电机中会引起转子很高的温升的问题,研究了一种计算高速磁悬浮电机转子涡流损耗的解析计算方法。针对转子涡流损耗的问题,采用了一种加感抗器减小谐波涡流损耗从而降低温度的有效方法。实验结果表明,加感抗器能有效减小谐波电流、降低电机温度。

关键词:

高速磁悬浮电机, 定子发热模型, 转子涡流损耗, 谐波电流, 感抗器

CLC Number:

TH133
TM335

WANG Gui-Xiang, XU Long-Xiang, DONG Ji-Yong.

Research on Temperature Calculation and Cooling System of a High-speed Magnetic Levitation Motor

[J]. China Mechanical Engineering, 2010, 21(8): 912-916.

王桂香, 徐龙祥, 董继勇.

高速磁悬浮电机的发热与冷却研究

[J]. 中国机械工程, 2010, 21(8): 912-916.

[1]	AI Shu-Feng. Bearing Fault Diagnosis Based on Multi-scale Hermitian Wavelet Envelope Spectrum [J]. China Mechanical Engineering, 2012, 23(1): 34-38.
[2]	HEI Dai, ZHENG Mei-Ru. Dynamics Analysis of Flexible Rotor System Based on Wilson-θ Method [J]. China Mechanical Engineering, 2011, 22(24): 2918-2922,2965.
[3]	AI Shu-Feng. Research on Bearing Fault Diagnosis Based on Dual-tree Complex Wavelet Transform [J]. China Mechanical Engineering, 2011, 22(20): 2446-2451.
[4]	SONG Shou-Hu, ZHANG Jing-Dong, LIU Zhi-Feng. Crack Initiation Period-based Rest Life Prediction of Typical Parts [J]. China Mechanical Engineering, 2011, 22(20): 2490-2494.
[5]	LI Wei-Wei-1, CHEN Xiao-Yang-1, CHEN Xue-Jin-1, ZHANG Xiao-Ling-2. Contact Pressure Calculation and Analysis of Roller Bearings in Skewing Condition [J]. China Mechanical Engineering, 2011, 22(17): 2034-2039.
[6]	LI Wei-Wei, CHEN Xiao-Yang, CHEN Xue-Jin. Numerical Calculation and Roller Pressure Analysis of Theoretical Logarithm Profile Equation [J]. China Mechanical Engineering, 2011, 22(15): 1788-1792.
[7]	YU Wei, LIN Cheng-Jie, LIU Qing-Chao, WANG Dong-Feng. Predicting Skid and Spin Power Loss in a High Speed Hybrid Ball Bearing [J]. China Mechanical Engineering, 2011, 22(6): 715-719.
[8]	YANG Chao-Jun, ZHENG Wu, LI Zhi-Teng, LI Zhi-Bao, JIANG Sheng-Fa. Performance Parameter Calculation of Adjustable Speed Asynchronous Disk Magnetic Coupling [J]. China Mechanical Engineering, 2011, 22(5): 604-608.
[9]	LI Yan, SHU Liang, XIAO Ji-Meng, LI Chu-Juan. Design of Raceway Groove Structure for Megawatt Wind Power Generator Yaw Bearings and Life Studies [J]. China Mechanical Engineering, 2011, 22(2): 132-137,143.
[10]	CHEN Di-Yi, DAN,LIN,MA Xiao-Xi, CHEN Hai-Chao. A Class of Centrifugal Flywheel’s Chaos Mathematical Model and Its Linear Feedback Control [J]. China Mechanical Engineering, 2010, 21(24): 2932-2936.
[11]	XIAO Hong, YANG Xia, CHEN Ze-Jun, WANG Jian. Application of Hertz Contact Theory in Analyzing Load Distribution of Mill Roller Bearing with Boundary Element Method [J]. China Mechanical Engineering, 2010, 21(21): 2532-2535,2540.
[12]	LI Sai-Cheng, CHEN Xiao-Yang, MA Chun-Qing, CHEN Ai-Hua. Contact Stress Analysis of Variable Curvature Arc Spherical Roller Bearings [J]. China Mechanical Engineering, 2010, 21(21): 2545-2550.
[13]	CHEN Xiao-Beng, HE Wei-Xing, MA Dong-Ling, DIAO De-An. Symbol Entropy and SVM Based Rolling Bearing Fault Diagnosis [J]. China Mechanical Engineering, 2010, 21(17): 2079-2082.
[14]	JIANG Ke-Jian, CHU Chang-Sheng. On-line Measurement of Supporting Characteristics of an Active Magnetic Levitations with Unknown Transfer Function [J]. China Mechanical Engineering, 2010, 21(8): 883-888.
[15]	ZHANG Ai, ZHANG Xiao-Zhang. A Review of Unbalance Control Technology of Active Magnetic Bearings  [J]. China Mechanical Engineering, 2010, 21(8): 897-903.