TSMC励磁的风力发电系统空载并网控制

Idle Load Grid-connection Control for TSMC Excited Wind Power Generation System

双级矩阵变换器(TSMC)存在中间直流环节,但不包含大容量直流环节储能电容,引入TSMC作为双馈风力发电系统的励磁电源。根据交流励磁变速恒频风力发电运行的特点,将电网电压定向的矢量控制技术应用在双馈发电机的并网控制上。根据电网电压和电机转速来调节转子的励磁电流,使双馈风力发电机定子电压跟随电网电压,从而减少并网时的冲击电流。实验结果表明,TSMC励磁双馈风力发电系统并网冲击电流较小,控制策略可行。

Two-stage matrix converter（TSMC） has a real DC link,but does not contain large DC link energy storage capacitors, this paper cites TSMC as the excitation source of doubly fed wind power generation.According to the char- acteristic of AC excited variable speed constant frequency wind power generation, vector control technique is used in grid-connection of doubly-fed induction generator based on grid voltage orientation.It will make doubly-fed induction generator stator voltage changes with grid voltage simultaneously by adjusting rotor exciting current according to grid voltage and rotor speed.The simulation and experimental results show that the TSMC excited doubly fed wind power generation system impact current is little, the control strategy is feasible.