风能转换系统多目标滑模预测优化控制  

Multiobjective optimization of wind energy conversion systems using predictive and sliding mode controls

作　　者：冷欣[1] 宋文龙[1] 王睿 游江[3] 顾伟宏[1] 贾鹤鸣[1] LENG Xin;SONG Wenlong;WANG Rui;YOU Jiang;GU Weihong;JIA Heming(College of Mechanical and Electrical Engineering,Northeast Forestry University,Harbin 150040,China;Wireless optimization Room,Harbin Mobile Communication Company,Harbin 150001,China;College of Automation,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]东北林业大学机电工程学院,黑龙江哈尔滨150040 [2]哈尔滨移动公司无线优化室,黑龙江哈尔滨150001 [3]哈尔滨工程大学自动化学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2018年第4期760-765,共6页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(51479042);中央高校基本科研业务费专项资金项目(DL11BB34;2572015BB07);黑龙江省博士后资助项目(LBH-Z12010)

摘　　要：为了达到能量转换最优化和减小机械结构的疲劳负荷的要求,基于双馈感应发电机风能转换系统建立了数学模型,提出一种双频环滑模预测优化控制方法。该方法采用双频环多目标结构,低频环引入基于ARMA(autoregressive and moving average model)模型预测后的风速低频分量,采用PI控制对应于最优叶尖速度以保证其工作点运行在最优控制特性曲线上;高频环引入风速的湍流分量,将预测控制与滑模控制相结合实现系统的动态优化。仿真结果表明:双频环滑模预测控制有效避免了不确定性对系统的影响,实现了部分负荷状态下的最优控制特性跟踪,减少了控制输入量的变化量,降低了机械疲劳,保证了系统的优化稳定运行。To optimize energy conversion and to reduce the fatigue load of the doubly fed induction generators of wind energy conversion systems(WECS),a mathematical model was established and a sliding mode prediction control was proposed.This method adopts dual-frequency loop multiobjective control,in which the low-frequency component of wind speed based on ARMA model prediction is introduced into the low-frequency loop.PI controlled speed corresponds to the optimal tip speed to ensure that the operating point is around the Optimal Regimes Characteristic(ORC)curve;the turbulent component of wind speed is introduced into the high frequency loop.The dynamic optimization is realized by the combination of predictive and sliding mode controls.Simulation results reveal that the dual-frequency loop sliding mode prediction control effectively avoids the impact of uncertainties on the system,achieves an ORC tracking under partial load,reduces the change of control input,reduces mechanical fatigue,and ensures the optimization and stability of the system.

关 键 词：风能转换系统 双馈感应发电机 滑模预测控制 多目标 高频环 低频环 ARMA模型 部分负荷 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]