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	External faults in poly-phase permanent magnet propulsion motors
	Ning Puqi ; Chai Jianyun ; Cai Ping ; Huang Hai
	2010-05-06 ; 2010-05-06
关键词	Practical Theoretical or Mathematical/ brushless machines damping electric propulsion finite element analysis machine windings permanent magnet motors short-circuit currents/ external fault poly-phase permanent magnet propulsion motor short-circuit current FEM circuit coupled nonlinear transient model brushless machine damping winding effect/ B8310 a.c. machines B8320 d.c. machines B0290T Finite element analysis
中文摘要	The damage caused by short-circuit currents to magnets in poly-phase permanent magnet propulsion motors was analyzed using an FEM circuit coupled nonlinear transient model. The objective is to develop a method to provide fault protection during short circuits. Simulations of a 50 kW 4-pole 18-phase permanent magnet brushless machine predicted the single phase to ground fault currents and the two phase to ground fault currents. The model was also used to investigate the effect of damping winding on the transient process. The calculated currents agree well with measured values which shows that the method can effectively calculate short circuit currents in permanent magnet machines with damping windings. The method can be used to design damping windings and determine the most serious transient demagnetization point.
语种	中文 ; 中文
出版者	Tsinghua Univ. Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/11837]
专题	清华大学
推荐引用方式 GB/T 7714	Ning Puqi,Chai Jianyun,Cai Ping,et al. External faults in poly-phase permanent magnet propulsion motors[J],2010, 2010.
APA	Ning Puqi,Chai Jianyun,Cai Ping,&Huang Hai.(2010).External faults in poly-phase permanent magnet propulsion motors..
MLA	Ning Puqi,et al."External faults in poly-phase permanent magnet propulsion motors".(2010).

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