同步直驱风电机组并网系统仿真

摘要

基于风电机组并网工作原理，研究永磁同步发电机（PMSG）和电压型PWM 逆变器的数学模型，提出采用七段式SVPWM 控制策略，以及外环电压控制和内环电流控制相结合的双闭环控制策略实现同步风力发电机的有功和无功的解耦控制。利用仿真软件Matlab／Simulink构建了完整的并网过程仿真模型。仿真结果表明，系统具有良好的动静态性能，为同步直驱风电机组并网提供参考。%On the basis of wind turbines grid working principle ,the permanent magnet synchro‐nous generator (PMSG) and mathematical models of voltage type PWM inverter are studied .By using seven‐segment SVPWM control strategy ,and outer voltage control and inner current con‐trol combines dual closed‐loop control strategy ,synchronous wind generator of active and reac‐tive power decoupling control is implemented .Using simulation software of Matlab/Simulink , a simulation model of complete grid process is built .Simulation results show that the system has good dynamic and static performance .It can be a reference for synchronous direct drive wind turbine grid .