风能转换系统的双频环容错控制  

Two-Frequency-Loop Control for Wind Energy Conversion System Based on Fault Tolerant

作　　者：王萧[1] 王艳[1] 纪志成[1] 

机构地区：[1]江南大学通信与控制工程学院,江苏无锡214122

出　　处：《江南大学学报（自然科学版）》2009年第6期688-693,共6页Joural of Jiangnan University (Natural Science Edition)　

基　　金：教育部博士点基金项目(200802950004);江苏省博士后基金项目(0801001B);国家博士后基金项目(20080431066)

摘　　要：针对风能转换系统,根据风速的多时间尺度特性,在风能转换系统非线性机理模型的基础上,考虑传感器部分失效的情况,建立风能转换系统的双频环模型。基于双频环模型,低频环采用PI稳态优化控制方法,高频环采用容错H∞控制方法,从而实现额定风速以下风能的捕获率最大,并且在传感器发生故障时系统仍然能够正常运行。仿真结果表明,在传感器部分失效情况下,文中提出的方法是有效的。For the Wind Energy Conversion System, when the part of the sensors is disabled, according to multi-time scale of wind speed, two-frequency-loop model is established for WECS based on the nonlinear mechanical model. According to the two-frequency-loop model, PI static optimal control is used in the low-frequency-loop, while fault-tolerant H∞ control is employed in the high-frequency-loop, and then maximize the efficiency of captured wind energy, as well as the system work well when the part of the sensors is disabled. The simulation results demonstrate that when the part of the sensors is disabled, the feasibility of two-frequency-loop control based on fault-tolerant H∞ control state feedback is highly effective.

关 键 词：风能转换系统 双频环 H∞控制 容错控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]