高速永磁电机的损耗计算与温度场分析

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Abstract Due to the high speed and high frequency of the winding current for the high speed machines, the core and copper losses of stator, eddy current loss and air friction loss of the rotor per unit volume will be much more compared to the normal speed machine. At the same time, because of the power density increasing and the total dissipation area decreasing, the effective dissipation and cooling mode are significant to the high speed machine design. In this paper, the basic electrical loss, the high frequency additional loss and the air friction loss on the rotor surface are analyzed based on the finite element and 3D fluid field analysis. Taking a high speed permanent magnet (PM) machine with rated speed of 60000r/min as an example, the calculation and experimental methods of losses are studied. The temperature field of the high speed PM machine is calculated by using the fluid-solid coupling method. The validity of the temperature field calculation method is confirmed through the comparison of the calculated value with the tested result of the high speed PM machine.

Key words： High speed permanent magnet machine loss calculation fluid field temperature field

Received: 26 September 2011 Published: 20 March 2014

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TM351

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	Kong Xiaoguang
	Wang Fengxiang
	Xing Junqiang

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Kong Xiaoguang,Wang Fengxiang,Xing Junqiang. Losses Calculation and Temperature Field Analysis of High Speed Permanent Magnet Machines[J]. Transactions of China Electrotechnical Society, 2012, 27(9): 166-173.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I9/166

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