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CLC number: TM315

On-line Access: 2017-09-04

Received: 2015-03-28

Revision Accepted: 2015-07-17

Crosschecked: 2017-05-26

Cited: 0

Clicked: 7965

Citations:  Bibtex RefMan EndNote GB/T7714


Xiu-xing Yin


Yong-gang Lin


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Journal of Zhejiang University SCIENCE A 2017 Vol.18 No.9 P.718-727


Modeling and loading compensation of a rotary valve-controlled pitch system for wind turbines

Author(s):  Xiu-xing Yin, Yong-gang Lin, Wei Li

Affiliation(s):  State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   Calminder@126.com

Key Words:  Wind turbine, Pitch system, Rotary valve, Loading compensation

Xiu-xing Yin, Yong-gang Lin, Wei Li. Modeling and loading compensation of a rotary valve-controlled pitch system for wind turbines[J]. Journal of Zhejiang University Science A, 2017, 18(9): 718-727.

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%T Modeling and loading compensation of a rotary valve-controlled pitch system for wind turbines
%A Xiu-xing Yin
%A Yong-gang Lin
%A Wei Li
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1500072

T1 - Modeling and loading compensation of a rotary valve-controlled pitch system for wind turbines
A1 - Xiu-xing Yin
A1 - Yong-gang Lin
A1 - Wei Li
J0 - Journal of Zhejiang University Science A
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EP - 727
%@ 1673-565X
Y1 - 2017
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A1500072

A rotary valve-controlled pitch system is proposed to regulate the generator power and smooth power fluctuations for a wind turbine. Design details and dynamic modeling of this pitch system are presented and analyzed. A practical loading compensation approach is synthesized and involved in the pitch system to compensate for the external uncertain pitch loads. The proposed pitch system and loading compensation approach have been experimentally evaluated in terms of generator power smoothing and control accuracy. As demonstrated by the comparative experimental results, the proposed pitch system can be used to significantly smooth the generator power fluctuations and hence to improve the power quality as compared with a servo valve-controlled pitch system under the same operating conditions. The loading compensation approach can also be used to significantly attenuate the effects of external pitch loads and improve the robustness and reliability of the pitch system. The proposed pitch system features good control accuracy and cost-efficiency and hence is attractive for applications in modern large-scale wind turbines.


创新点:1. 提出数字式旋转阀控马达变桨距的控制技术,推导得出变桨距控制的模型;2. 提出变桨距载荷补偿的控制方法,以提高变桨距控制的精度和鲁棒性;3. 搭建实验台,并与伺服阀控马达变桨距进行功率平滑控制的对比性研究。
方法:1. 通过理论推导,构建旋转阀控马达变桨距的机理模型,得到输出桨距角与输入控制信号之间的定量关系;2. 通过对比性实验分析,验证旋转阀控马达变桨距在输出功率平滑控制方面的高效性。
结论:1. 相比于伺服控马达,数字式旋转阀控马达变桨距能更有效地平滑风电机组的输出功率,提高输出功率的稳定性和质量;2. 变桨载荷补偿的方法能更为有效地提高旋转阀控马达变桨距控制的精度、响应速度和鲁棒性。


Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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