基于无速度传感器直驱风力发电运行控制研究

Operation Control of Direct-Driven Wind-Power Generation System Without Speed Sensor

从永磁同步电机(PMSG)数学模型出发,采用双向PWM变换器结构,完成了新型无速度传感器直驱永磁同步风力发电机组的控制系统。根据PMSG的特性,机侧采用转子磁链定向的矢量变换控制技术,其网侧变换器采用电压电流双闭环控制策略。实验结果表明该控制策略能实现对PMSG的有功和无功电流的独立控制,充分验证了所提方案的可行性。

Using the rotor d -q reference frame of the permanent magnet synchronous generator （PMSG）, the new control system of direct driven permanent magnet synchronous wind turbine generator without speed sensor,which adopted bidirectional PWM converter, was proposed. According to the characteristics of PMSG, the generator side adopted rotor flux linkage oriented vector control technology, and the grid side using the voltage oriented control and current dual close - loop control strategy. The experiment results showed the system＇s performances and validate the feasibility of the control system.