摘要
风力发电机组功率不断提升,风机桨叶随之增大,风机在额定风速以上运行时,桨叶所受气动载荷逐渐增大,为风机安全运行埋下了隐患,因此希望减小这一载荷。针对这一问题,在充分分析风电机组结构及其运行规律的基础上,依据空气动力学原理,提出了一种基于桨叶方位角权系数分配的独立变桨距控制方法。同时,针对风机输出功率要求稳定的目标,设计了一种模糊-PID控制器。仿真结果表明,风机在高于额定风速以上运行时,这种模糊-PID控制下,基于桨叶方位角权系数分配的独立变桨距控制策略,可以改善风机输出功率并有效地减小桨叶气动载荷。
The blades of wind turbine generator become larger owe to the increasing power of wind turbine. The aerodynamic loads on blades, which needs to be reduced, become a potential problem of the safe operation when the wind speed exceeds the rated value. To solve the problem, a control method for individual pitch control based on azimuth angle weight number assignment was brought forward on the basis of analyzing the structure and operation rules of wind turbines, analyzing the principle of aerodynamics. In order to stabilize the output power of wind turbine, a fuzzy-PID controller is designed. Simulation results show that, the proposed control strategy can im- prove the output power and effectively reduce blade load when the wind speed is higher than the rated value.
出处
《控制工程》
CSCD
北大核心
2014年第6期829-832,837,共5页
Control Engineering of China
基金
辽宁省教育厅科学技术研究(2007T075)
作者简介
彭继慎（1969-），男，辽宁阜新人，教授，博士生导师，博士，主要从事电力传动系统的计算机控制技术与仿真等方面的教学与科研工作。
