永磁同步风电机组传动轴振动分析与抑制

doi:10.19595/j.cnki.1000-6753.tces.161527

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Abstract Due to the randomness and uncertainty of wind speed, the shadow effect and wind shear effect can motivate the natural frequencies of the transmission shaft on large PMSWT, which triggers shaft vibration. This vibration process will not only produce huge noise, but also easily lead to the loosening of unit parts and damage of the actuator, to speed up the transmission shaft fatigue until its fatigue life runs out. It can seriously affect the service life of the unit. In addition, vibration is more likely to cause grid voltage flicker and power fluctuation, affecting the power quality. In this paper, shaft vibration of permanent magnet synchronous wind turbine (PMSWT) during the time of maximum power point tracking (MPPT) can be divided into rigid vibration and torsional vibration based on modal analysis. Then, the reason and theory of shaft vibration have been analyzed, and the corresponding strategy has been proposed to suppress the shaft vibration. The proposed strategy can suppress the torsional vibration effectively, reduce the rigid vibration, make full use of wind energy, and improve the capacity of wind turbine.

Key words： Modal analysis permanent magnet synchronous wind turbine (PMSWT) maximum power point tracking (MPPT) torsional vibration rigid vibration

Received: 22 September 2016 Published: 05 March 2018

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	Liu Jun
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Liu Jun,Zhou Feihang,Liu Fei. Analysis and Restraining of Permanent Magnet Synchronous Wind Turbine Shaft Vibration[J]. Transactions of China Electrotechnical Society, 2018, 33(4): 930-942.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.161527 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I4/930

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