多相无刷励磁系统旋转整流器故障的仿真与识别

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Abstract Damage of rotary rectifier in multi-phase brushless excitation system occurs frequently, which would seriously affect the normal safe operation of the main generator in deteriorating condition. In order to study fault recognition of the rotary rectifier, the multi-loop model of multi-phase brushless excitation system including the rectifier is established. The normal state and the common fault states of the rectifier are simulated, and the comparison between the calculated results and the experiments verify the validity of the model and simulation. The components with different frequencies of stator currents under different states of rotary rectifier as well as their mechanism are analyzed theoretically, based on which the ratio of the 4th to the 22nd harmonic component of the stator current is suggested to be the fault recognition object, which provides a theoretical basis for fault diagnosis of rotary rectifier in multi-phase brushless excitation system.

Key words： Brushless excitation rotary rectifier fault recognition multi-loop method

Received: 18 March 2010 Published: 20 March 2014

PACS:	TM461
	TM772

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	Hao Liangliang
	Wang Shanming
	Qiu Arui
	Liu Weiqun
	Wu Long
	Mu Wei

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Hao Liangliang,Wang Shanming,Qiu Arui等. Simulation and Recognition for Rotary Rectifier Fault of Multi-Phase Brushless Excitation System[J]. Transactions of China Electrotechnical Society, 2012, 27(4): 138-144.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I4/138

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