基于坐标变换的双馈风力发电机组叶片质量不平衡故障诊断

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Abstract Firstly, the electrical characteristics of the doubly-fed induction generator (DFIG) under the blade imbalance fault are analyzed.Furthermore, the stator and rotor currents can be obtained according to the dq coordinate transformation.Then the Hilbert demodulation method is used to process the current signal so that the fault frequency can be highlighted.Finally, the simulation work under Matlab/Simulink and the experiment on the DFIG testing platform are taken for verification.It is shown that, the faulty stator and rotor currents contain the same harmonic component as that of the blade’s rotating frequency.The proposed method is effective to recognize the blade mass imbalance fault and therefore has an engineering application potential.

Key words： Doubly-fed induction generator blade mass imbalance stator and rotor current coordinate transformation

Received: 29 March 2015 Published: 20 April 2016

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TM315

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	Articles by authors
	Sheng Xiaoling
	Wan Shuting
	Li Yonggang
	Cheng Lifeng

Cite this article:

Sheng Xiaoling,Wan Shuting,Li Yonggang等. Fault Diagnosis for Blade Mass Imbalance of Wind Turbines with DFIG Based on Coordinate Transformation[J]. Transactions of China Electrotechnical Society, 2016, 31(7): 188-197.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I7/188

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