转子电阻变化对电力牵引感应电机起动转矩的影响

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Abstract The train moves in very wide area and the circumstance is very different. The train must be started in the most difficult circumstance. The electric traction system must provide the enough starting torque for the train. But the torque of the induction motor is influenced by the rotor resistance variation and the rotor resistance variation is influenced by the temperature rise. This paper analyzes the traction characteristics of induction motor from slip frequency and flux orientation. It is proved that slip frequency and flux orientation are essentially uniform. This paper also analyzes the influences that the rotor resistances variation brings to the slip frequency, flux orientation and the starting torque. The microcomputer system (TMS320F2182) to realize entire digital control is designed. The vector control is adopted and the experiment is done. The experimental results show that starting torque is greatly influenced by the rotor resistance and the temperature rise is the key which affects the rotor resistance.

Key words： Electric traction induction motor rotor resistance starting torque

Received: 31 October 2010 Published: 07 March 2014

PACS:

TM301

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	Articles by authors
	Chen Zhenfeng
	Zhong Yanru
	Li Jie
	Sun Jianping
	Zeng Li
	Jing Yuepeng

Cite this article:

Chen Zhenfeng,Zhong Yanru,Li Jie等. Influence of Rotor Resistance Variation on Starting Torque of Induction Motors in Electric Traction[J]. Transactions of China Electrotechnical Society, 2011, 26(6): 12-17.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2011/V26/I6/12

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