In this paper,the control strategy of doubly-fed variable speed constant frequency wind power system in power factor correction,grid voltage distortion and reactive power compensation is analyzed by using doubly-fed asynchronous motor as the converter of wind power generation.The working principle of permanent magnet synchronous motor is introduced.Based on the control method of power factor correction,the influence of grid voltage distortion on the operation stability and power quality of wind power generation system is analyzed.Finally,the correctness of the control strategy is verified by simulation.The simulation results show that the doubly-fed variable speed constant frequency wind power system proposed in this paper can effectively improve the performance degradation caused by voltage distortion when the doubly-fed induction motor is connected to the grid.
关键词
风力发电/调速控制/变速恒频/并网控制
Key words
Wind power/Speed control/Variable speed constant frequency/Grid-connected control
维普
万方数据