Design and Analysis of Fan-cooling for High Speed Permanent Magnet Machine Rotor
Compared with common permanent magnet (PM) machine,the high speed PM machine has smaller size and larger power density.However,owing to high-speed high frequency and small volume,the PM rotor is more easily to become overheated so that irreversible demagnetization of the PM is induced.Traditional cooling methods of machine directly cool the machine stator,the temperature rise of rotor is reduced through heat exchange among stator,air gap and rotor.Owing to rapid temperature rise of high speed PM machine rotor,the method of indirect cooling rotor does not effectively protect PM rotor from overheating.To directly reduce the temperature rise of PM rotor and the volume of machine,design method of fan-cooling for high speed PM machine rotor is proposed in this paper,that is,high speed axial fan rotating synchronously with the high speed PM machine rotor is designed.Finally,the temperature rise of high speed PM machine rotor with the structure of high speed axial fan is analyzed based on the coupling method of fluid-solid,the validity is verified.
High Speed PM Machine High Speed Axial Fan Fluid Field Temperature Field
Junqiang Xing Lei Chen Qi Zhang Yunfei Ma
TBEA Shenyang Transformer Group CO.,LTD,Shenyang,China Shenyang University of Technology,School of new energy engineering,Shenyang,China
国际会议
广州
英文
3-6
2012-11-16（万方平台首次上网日期，不代表论文的发表时间）