Research on control strategy of maximum power point tracking of doubly-fed asynchronous wind generator

In order to maximize the use of wind power, different techniques have been developed to track the maximum power point. Because the rotor speed of doubly-fed variable speed and constant frequency wind power generating system is adjustable, the maximum wind power can be gotten by adjusting the rotor speed of the induction generator. The power characteristic of wind turbine was first introduced in this paper, and two types of existing maximum wind power track algorithms are advanced, focusing on analysis of the variable step hill climbing algorithm. Then taking a doubly-fed generator as example, the paper applied genetic algorithm in tracking maximum wind energy. Finally, MATLAB software was used to simulate the three algorithms, and the results proved that the genetic algorithm has feasibility, higher accuracy and less tracking time.