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浙江大学学报(工学版)
浙江大学学报(工学版)  2021, Vol. 55 Issue (4): 750-756    DOI: 10.3785/j.issn.1008-973X.2021.04.018
机械与能源工程     
基于变桨系统的功率与载荷双目标协同控制
曾凌霄(),刘宏伟*(),李伟,林勇刚,顾亚京
浙江大学 流体动力与机电系统国家重点实验室，浙江 杭州 310027
Cooperative control of power and load based on pitch system
Ling-xiao ZENG(),Hong-wei LIU*(),Wei LI,Yong-gang LIN,Ya-jing GU
State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China
 全文: PDF(1629 KB)   HTML
摘要：

为了保证机组功率的稳定及尽可能降低机组载荷，以600 kW水平轴海流能发电机组为对象，围绕功率和载荷2个方面设计基于功率与载荷双目标的协同变桨控制策略. 在功率方面，基于黄金分割法将流速段分割，每段采用不同的fuzzy PID控制；在降载方面，采用d-q变换的方式，从叶轮坐标系将叶根弯矩变换到d-q坐标系，实现了三维转二维的简化，基于PID进行控制，经过Coleman反变换将结果输出给变桨执行机构，完成独立变桨. 通过Matlab/Simulink 和海流能分析软件Bladed进行联合仿真. 结果表明，采用该控制策略，可以在保证功率稳定的同时，显著降低叶轮的不平衡载荷.
关键词： 水平轴海流能机组;  独立变桨;  黄金分割法;  d-q变换;  功率控制;  载荷控制;  发电    
Abstract:

A collaborative pitch control strategy was designed based on power and load for 600 kW horizontal axis current turbine in order to ensure the stability of the power and reduce the load as much as possible. The flow rate segment was divided based on golden section method in terms of power, and each segment adopted different fuzzy PID control. The d-q transformation method was used to transform the blade root bending moment from the impeller coordinate system to the d-q coordinate system in terms of load reduction. Then the simplification of three-dimensional to two-dimensional transformation was realized. The results were output to the pitch actuator through Coleman inverse transformation in order to complete the independent pitch based on PID control. The joint simulation of Matlab/Simulink and current energy analysis software Bladed was conducted. Results show that the proposed control strategy can significantly reduce the unbalanced load of the impeller while ensuring the power stability.
Key words: horizontal axis marine turbine    individual pitch    golden section method    d-q transformation    power control    load control    electric generating
收稿日期: 2020-10-16 出版日期: 2021-05-07
CLC:  TK 73  
基金资助: 国家重点研发计划资助项目(2018YFB1501900)；国家自然科学基金资助项目(51775487)；浙江省重点研发计划资助项目(2021C03182)
通讯作者: 刘宏伟     E-mail: zelexshaw@163.com;zju000@163.com
作者简介: 曾凌霄(1995—)，男，硕士生，从事可再生能源发电的研究. orcid.org/0000-0002-2378-9214. E-mail： zelexshaw@163.com
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曾凌霄
刘宏伟
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林勇刚
顾亚京

引用本文:

曾凌霄,刘宏伟,李伟,林勇刚,顾亚京. 基于变桨系统的功率与载荷双目标协同控制[J]. 浙江大学学报(工学版), 2021, 55(4): 750-756.

Ling-xiao ZENG,Hong-wei LIU,Wei LI,Yong-gang LIN,Ya-jing GU. Cooperative control of power and load based on pitch system. Journal of ZheJiang University (Engineering Science), 2021, 55(4): 750-756.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2021.04.018    或    http://www.zjujournals.com/eng/CN/Y2021/V55/I4/750

图 1  能量捕获系数的特性曲线
图 2  叶素受力示意图
图 3  基于模型的桨距角优选过程
图 4  黄金分割示意图
图 5  黄金分割法分割流速区间过程
图 6  叶根弯矩控制过程
图 7  功率与载荷协同控制整体方案
参数 数值
额定功率 600 kW
叶轮直径 16 m
桨距角 0~90°
发电机额定转矩 19 108 N·m
发电机额定转速 300 r/min
表 1  机组基本信息
图 8  基于黄金分割的功率与载荷协同控制逻辑框图
图 9  与统一变桨控制功率的对比
图 10  与统一变桨控制叶根弯矩的对比
图 11  3种方案的功率情况
图 12  3种方案的叶根弯矩情况
图 13  不同流速下的功率
图 14  不同流速下的叶根弯矩
图 15  流速模拟曲线
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