摘要
风力机的特性不仅包括静态特性,还包括动态特性。其中动态效应主要包含风的剪切效应(Wind Shear)及塔影效应(Tower Shadow)。在建立完整的直驱式永磁同步风力发电机组的模型基础之上,详细研究了由于风剪、塔影效应引起的转矩脉动量对直驱式永磁同步风力发电系统稳定性的影响。运用等效气动转矩的思想完善了传统风力机的模型,使其更加接近实际情况。在Matlab/Simulink中建立了永磁直驱风力发电机组(Directly Driven Wind Turbine With Permanent Magnet Synchronous Generators,D-PMSG)仿真模型,并对不同风速时机组运行情况进行了仿真。结果验证了风剪、塔影效应引起的转矩脉动频率为风力机旋转频率3倍的结论。仿真结果对于直驱式永磁同步风力发电有着更为实际的意义。
The wind turbine has both the static characteristics and dynamic characteristics. The dynamic characteristics contain wind shear and tower shadow. Based on a complete model of directly driven type permanent magnet synchronous of wind turbine, the effect of pulsating torque rate caused by wind shear and tower shadow on PMSG wind power generation system is researched in detail. The equivalent air-powered torque is applied to perfect the traditional model of the wind turbine, which makes it more actual. The simulation model of directly driven wind turbine with permanent magnet synchronous generators （D-PMSG） is established in Matlab / Simulink and the operation of set at different wind speed is simulated. It is concluded that the pulsating torque rate caused by wind shear and tower shadow is triple the rotating frequency of wind power generation system. The simulation results is of more practical significance for directly driven permanent magnet synchronous wind power.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2012年第14期38-43,共6页
Power System Protection and Control
基金
四川省科技厅支撑项目(2011GZ0036)
四川省电力公司科技项目(11H0892)
