Research on Doubly-fed Asynchronous Wind Power Generation System Based on Controllable Power Factor
Jin Aijuan;Xiang Shuo;Zhang Yan;Yin Hanting;Li Xuanfan;Li Haoye;School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology;
This paper mainly focuses on the problems of low conversion rate of wind energy, unstable frequency of power generation and uncontrollable power factor when wind speed changes, takes the double-fed machine as the object, uses the double PWM converter to control it, and uses rotor side converter and grid side converter to implement stator current variable speed constant frequency. What's more, coordinate transformation and space vector modulation algorithm are used in the control system to realize controllable power factor,improving unfavorable situation caused by sudden drop of load. Furthermore, the simulation model is established to verify the correctness and feasibility of the system.