变速变桨距风力发电机组的智能控制-NSFC.PDF

变速变桨距风力发电机组的智能控制 邓文斌，王维庆，吐松江·卡日，饶成诚，吴寒 (新疆大学 电气工程学院，乌鲁木齐 830047) 摘要：由于风速和风向的不确定性，以及要求风力发电系统精确数学模型，基于传统的PI控制在风速不断 变化的情况下难以实现理想的控制效果，针对传统PI控制技术难以兼顾风力发电机组转速控制和稳定输出 功率的平衡，本文提出变速变桨运行控制方法。将风力发电机组的功率误差及功率误差变化率作为判断依 PI Matlab 据和控制策略，再结合模糊控制器，可以弥补了传统 控制器的不足。通过 仿真，结果表明风速 不断变化和瞬变时，模糊控制器能够使风力发电机组稳定地输出功率和降低了电机的运行速度，同时缩短 调节时间和减轻变桨距执行机构的运行疲劳度，这对风力发电机组降低故障发生率和延长其使用寿命具有 重要意义。 关键词：风力发电机组；模糊控制；功率误差；变速变桨 OutputPowerIntelligent ControlofVariable-speed Pitch forWindTurbine DENGWen-bin，WANGWei-qing，TUSHONGJIANG Ka-ri ，RAO Cheng-cheng，WU Han （SchoolofElectricalEngineering,XinjiangUniversity,Wulumuqi 830047） ABSTRACT: ABSTRACT: AABBSSTTRRAACCTT::The power generated by wind turbine changes rapidly because of the fluctuation of wind speed and direction,then the wind speed accurate system model are hard to obtain,so it’s difficult to achieve ideal results by appling the traditional PI controller in case of rapidly varible wind.Analyzed the shortcomings of PI controller,the control strategy which was decided by the output power changes of wind turbine generation about the operation mode of pitch actuator was proposed and according this control strategy,recombining the variable-speed pitch controlwhich was based on the fuzzy control strategy was also proposed.The results ofthe simulation indicate that the fuzzy controller can produce a better control result than PI controller,let the output power could be more stable at the point of rated power,and the new pitch control strategy can effectively regulation time,and can be alleviated,thereby,it’s very availability to reduce the failure rate and maintain the security and stability of wind turbinegeneratorsystem. KEYWORDS: KEYWORDS: KKEEYYWWOORRDDSS::windturbinegeneratorsystem;fuzzycontrol;power error;variablespeedvariablepitch 1、引言