Realization And Simulation Analysis Of Direct-Drive Permanent Magnet Windturbine Generator Control Algorithm

With the concept of sustainable development becoming more and more popular, the wind power generation technology has also attracted more and more attention. As the two important control processes of the wind power generation technology, the study of maximum power tracking control and the variable pitch control has been the hotspots both at home and abroad. A reasonable and effective control algorithm can optimal the control of the wind turbine, besides, it can also improve the operation efficiency and power generation.This paper uses GH-Bladed as the simulation platform which is the authority simulation software of wind power industry. We build the wind turbine model based on the real parameters data of the 1.5MW permanent magnet directly driven synchronous wind power generator (d-pmsg) from Shanghai Wande. According to the operating parameters of the wind turbine and the core equation that wind energy transforms into electrical energy, we can calculate the average equivalent wind speed that the wind turbine blade rotation plane has received. Based on this wind speed signal and combined with the PI control algorithm, we can realize the improvement of the maximum power tracking control and the pitch control algorithm of the wind turbine. Then, we use the C language to achieve the above control algorithm and compile it into the dynamic link library file in the external controller. By calling the dynamic link library file in the GH-Bladed software, the control simulation of can be realized.According to the design standard of the national wind turbine and the design requirements of the 1.5MW wind turbine from Shanghai Wande, we can evaluate the simulation results. The results indicate that the performance indexes of the main parameters of the wind turbine can satisfy the control requirements under the control algorithm of this paper. At the same time, it also proves that the feasibility of the control algorithm. Then, we compare the simulation results with the control results of the software built-in PID method from multi-angles. The analyses show that the control algorithm which has been used in our paper can obtain much better control effect. Besides, the annual power generation also has certain advantages. It is hoped that the above work can provide reference for the further improvement and perfection of the algorithm in the future.