基于准PR调节的三相风电并网逆变器

three-phase inverter grid topology and control strategy are studied in this paper. Aiming at the existing problems of PI controller and PR controller, the current loop control method of quasi-proportional resonant (PR) is used to solve the problem of static error, poor anti-interference ability with PI controller,and to overcome the limitation of PR controller which is difficult to achieve while taking full advantage of its high gain feature. Simulation and experimental results show that quasi-PR controller used in three-phase inverter can achieve no static error tracking, along with a strong anti-jamming capability which is meaningful for wind power grid inverter current loop control.