水平轴海流能发电机组独立变桨非对称载荷控制方法

doi:10.3901/JME.2018.20.089

机械工程学报 ›› 2018, Vol. 54 ›› Issue (20): 89-95.doi: 10.3901/JME.2018.20.089

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水平轴海流能发电机组独立变桨非对称载荷控制方法

刘宏伟, 何俊, 李伟, 林勇刚, 顾亚京, 王超助

浙江大学流体动力与机电系统国家重点实验室杭州 310027

收稿日期:2017-06-23 修回日期:2018-07-28 出版日期:2018-10-20 发布日期:2018-10-20
通讯作者: 刘宏伟,男,1978年出生,副教授。主要研究方向为海洋能、风能发电装备。E-mail:zju000@163.com
基金资助:
国家自然科学基金（51575477，51775487）、国家海洋可再生能源专项资金（GHME2015GC02，GHME2017SF02）资助项目。

Asymmetric Load Control Method for Individual Pitch of Horizontal Axis Marine Current Turbine

LIU Hongwei, HE Jun, LI Wei, LIN Yonggang, GU Yajing, WANG Chaozhu

State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027

Received:2017-06-23 Revised:2018-07-28 Online:2018-10-20 Published:2018-10-20

摘要/Abstract

摘要： 海流的湍流特性、剪切作用等会在叶轮平面内引起非对称载荷。以120 kW水平轴海流能发电机组为对象，对基于Fuzzy PID参数自整定的独立变桨载荷控制策略进行研究以降低叶轮的非对称载荷。建立叶片旋转坐标系和叶轮固定坐标系，将叶片所受力和力矩转换到叶轮，得到叶轮的俯仰力矩和偏航力矩。对线性化后的机组载荷模型进行Coleman变换，将叶根弯矩变换到d-q坐标系，从而完成叶轮俯仰力矩和偏航力矩的解耦，独立变桨控制系统简化为SISO系统。桨距角控制器通过Fuzzy PID控制得到d-q坐标系下的桨距角输出信号，并经Coleman逆变换后输出给变桨执行机构，实现独立变桨。最后基于建立的海流发电机组Matlab/Simulink模型，对控制策略进行了仿真研究，仿真结果表明所提载荷控制方法可以有效地降低机组的非对称性载荷。

关键词: 独立变桨, 发电, 非对称载荷, 水平轴海流能, 载荷控制

Abstract: Due to the turbulence of current and effects of shear flow, there exists large asymmetric load on the turbine. Taking a 120kW turbine as an example, a fuzzy-PID based individual pitch control method for asymmetric load reduction is proposed. The rotating blade coordinate and the fixed hub coordinate are established, and loads acted on blades are transferred to the hub to get tilt moment and yaw moment. Linearized loads being Coleman transformed, the blade root bending moments are transformed into d-q coordinate, so tilt moment and yaw moment on the turbine are decoupled, and the pitch control system is simplified into SISO system. The Fuzzy-PID pitch controller outputs a pitch angle signal in the d-q coordinate, and after Coleman inverse transformation, it is given to the pitch actuator to realize the pitch angle change. System model is established in Matlab/Simulink and the control strategy is simulated. The simulation results show that the proposed load control method can effectively reduce the asymmetric load of the turbine.

Key words: asymmetric load, electric generating, horizontal axis marine current turbine, individual pitch, load control

中图分类号:

TK73

刘宏伟, 何俊, 李伟, 林勇刚, 顾亚京, 王超助. 水平轴海流能发电机组独立变桨非对称载荷控制方法[J]. 机械工程学报, 2018, 54(20): 89-95.

LIU Hongwei, HE Jun, LI Wei, LIN Yonggang, GU Yajing, WANG Chaozhu. Asymmetric Load Control Method for Individual Pitch of Horizontal Axis Marine Current Turbine[J]. Journal of Mechanical Engineering, 2018, 54(20): 89-95.

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水平轴海流能发电机组独立变桨非对称载荷控制方法

Asymmetric Load Control Method for Individual Pitch of Horizontal Axis Marine Current Turbine

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