采用滑模自适应控制的永磁同步风力发电系统最大功率控制  

Maximum Power Control of Permanent Magnet Synchronous Wind Power Generation System Based on Sliding-mode Adaptive Control

作　　者：张开明 史宏俊 郭涛 ZHANG Kaiming;SHI Hongjun;GUO Tao(College of New Energy and Electronics Engineering,Yancheng Teachers University,Yancheng 224051,China;College of Hydraulic,Energy and Power Engineering,Yangzhou University,Yangzhou 225000,China)

机构地区：[1]盐城师范学院新能源与电子工程学院,盐城224051 [2]扬州大学水利与能源动力工程学院,扬州225000

出　　处：《电力系统及其自动化学报》2019年第7期143-150,共8页Proceedings of the CSU-EPSA

摘　　要：针对直驱式永磁同步风力发电系统存在的非线性、不确定性、强干扰的的问题,提出一种基于滑模自适应控制算法的最大功率点跟踪策略。为了实时估计发电机电动势以及系统转速和转矩,文中结合滑模控制和自适应控制算法,分别设计了滑模控制器和自适应观测器,并研究了渐变风、阵风、随机风3种风速下的滑模自适应控制器的控制性能。最后基于Matlab-Simulink进行了仿真验证,结果能实现对发电机转子角位置的准确估算,以及系统转速和转矩实时估计。Considering the nonlinearity,uncertainty and strong interference existing in a direct drive permanent magnet synchronous wind power generation system,a maximum power point tracking strategy is proposed based on the slidingmode adaptive control algorithm. To real-time estimate the generator’s electromotive force,as well as the system speed and torque,a sliding-mode controller and an adaptive observer are designed by combining the sliding-mode control and adaptive control algorithm,respectively. In addition,the control performances of the sliding-mode adaptive controller under three kinds of wind speeds(i.e.,gradient wind,gust,and random wind)are studied. Finally,simulations and verifications are conducted based on Matlab-Simulink,and results indicates that the accurate estimation of the generator rotor’s angular position and the real-time estimation of the system speed and torque can be realized.

关 键 词：风力发电系统 最大功率控制 非线性 滑模控制 自适应观测器 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]