摘要
介绍了新设计的"变步长最大风能捕获控制器",采用矢量控制算法,实现了风力发电机输出有功和无功功率的解耦控制。在有功功率控制方面,控制器根据发电机输出转速扰动时,相应输出有功功率的变化"变步长"地调整系统输入,直到系统运行到最大风能点。仿真结果表明,该系统不依赖于最优功率曲线和风机参数,而且收敛速度快,可以迅速实现"最大风能追踪"控制,具有一定的应用价值。
The methods of capture maximum wind energy at low wind velocity in variable-specd-constant-frequency wind generator system are through control the output power or the optimized rotate speed curve of dynamotor. The traditional arithmetic of the＂Maximum Wind Energy Capture＂ will dramatically reduce the wind generator system efl＇ieiency when the optimized power curve and part of parameters unknown or disturbed. This article introduced a new design called＂ variable-step maximum wind energy capture controller＂which with the vector control arithmetic. This arithmetic actualized the dynamotor decoupled in the frame of vector control of the active and reactive power. Meanwhile,the controller can adjust the system input with active power ＂varlable-step＂ when the dynamotor output rotate speed disturbed until the system get to the maximum wind energy point. The simulation results showed the system can rapidly get＂Maximum wind energy control＂and fast constringency speed without dependent on optimized power curve and wind turbine parameters. The said system has application value in a some extent.
出处
《装备制造技术》
2008年第12期66-69,共4页
Equipment Manufacturing Technology
关键词
变速恒频
双馈发电机
矢量控制
最大风能追踪
variable-speed-eonstant-frequeney
doubly fed induction generator
vector control
maximal power point tracking
