考虑损耗的永磁风力发电系统改进功率反馈法最大风能跟踪控制  

Improved Maximum Power Point Tracking Control of Power Signal Feedback Method for Permanent Magnet Synchronous Generator Considering Loss

作　　者：成云朋 李建华 蔡寿国 张学波 王永 陆晔 朱瑛[2] CHENG Yunpeng;LI Jianhua;CAI Shouguo;ZHANG Xuebo;WANG Yong;LU Ye;ZHU Ying(Yancheng Power Supply Company of State Grid Jiangsu Electric Power Co.,Ltd.,Yancheng 224008,China;College of Energy and Electrical Engineering,Hohai University,Nanjing 211100,China)

机构地区：[1]国网江苏省电力有限公司盐城供电分公司,江苏盐城224008 [2]河海大学能源与电气学院,江苏南京211100

出　　处：《中国电力》2023年第10期62-70,共9页Electric Power

基　　金：国网江苏省电力有限公司科技项目(J2023035);国家自然科学基金联合基金资助项目(U1966205)。

摘　　要：永磁直驱风力发电系统(PMSG)采用传统功率反馈最大功率跟踪(MPPT)控制方法时,需要提前获取机组的功率-转速曲线,且机组的风能转换率会随着风机使用时间而变化,从而降低了功率反馈法的控制精度。本文基于传统功率反馈控制方法,在考虑发电机内部损耗的前提下,提出考虑损耗的永磁直驱风电系统改进功率反馈法MPPT控制策略。该策略通过爬山搜索法跟踪风机最大功率点,在考虑损耗的基础上准确地计算出功率反馈法所需要的比例系数,进而计算出参考功率,从而实现最大风能跟踪。通过对该策略进行仿真和实验研究,验证了控制策略的有效性和可行性。In the maximum power point tracking(MPPT)control of the traditional power signal feedback(PSF)method for the direct-driven permanent magnet synchronous generator(PMSG),it is necessary to obtain the power-speed curve of wind turbines in advance,and wind energy conversion efficiency of the turbines will change with time,thereby reducing the control accuracy of PSF method.Based on the traditional PSF method,this paper proposes an improved MPPT control strategy for PMSG considering internal loss.This strategy tracks the maximum power points of wind turbines through the hill climb searching method and then accurately calculates the proportion coefficient required by the PSF method and the reference power to track the maximum wind power.Both the simulation and experiments verify the effectiveness and feasibility of the proposed control strategy.

关 键 词：风能转换系统 永磁同步发电机 最大功率点跟踪 功率反馈法 爬山搜索法 

分 类 号：TM614[电气工程—电力系统及自动化]