HCS策略在大惯性变速风力发电系统中的应用

HCS Strategy in Large Inertia Wind Turbine Application

大惯性风力机的系统输出功率与风力机的机械功率和储能的变化率相关联,常规的登山搜索(HCS)控制策略无法对大惯性风力机进行有效控制。提出的HCS策略是根据系统输出功率、系统储能及转速三者的变化量来对风力机进行控制的,无需最大功率曲线和风速值,就可以使风力机运行在最大功率点上。仿真结果证明了该方法的正确性。

For large inertia wind turbines, the system output power is interlaced with the turbine mechanical power and the rate of change in the mechanically stored energy, which always makes general hill-climb searching （HCS） strategy ineffective. The wind turbine is suitably controlled according to the variations of the system＇ s power, stored energy and speed and thus the operate state of a wind turbine settles down on the maximum power point by the proposed hill-climb searching（HCS） strategy, where the wind turbine＇s maximum power curve and the information on wind velocity are not required. Analysis and simulation results confirm the validity of this method.