基于PSIM双馈电机交—交变频矢量控制系统的仿真研究

Simulation and Research of the AC-AC Inverter Vector Control System of Double-Fed Motor Based on PSIM

在分析双馈电机数学模型的基础上,基于PSIM6.0软件建立了交一交变频矢量控制系统仿真模型。采用定子磁链定向矢量控制,定子有功和无功分量实现解耦;双闭环控制以转速和定子无功控制为外环,以转子电流控制为内环。电机在亚同步至超同步速的较大范围内平滑调速,定子侧功率因数可调。

In this paper,based on the mathematical model of the Doubly-Fed motor,a AC-AC inverter vector control system model has been established in PSIM6.0.The AC-AC inverter controls the DFM by stator-flux o- riented vector control strategy,the active and reactive power is decoupled.According to these,dual close loop control structure is adopted.The rotor speed and reactive power of stator are defined as object function thus make-up the out- er loop.The rotor current is controlled thus make-up the inner loop.The DFM can work from subsynchronous speed to supersynchronous speed.The reactive power seen from the stator side is also adjustable.