使用无速度传感器的PMSG单位功率因数控制

使用永磁同步发电机(PMSG)的直驱风电系统目前发展很快,PMSG的控制对系统性能非常重要,其中无速度传感器控制也受到了广泛关注。为推进此一技术,采用单位功率因数控制方法控制永磁同步发电机以降低永磁直驱风电系统变流器的功率等级;采用基于锁相环的无速度传感器控制策略对电机转速和相位进行观测。实验结果表明在永磁直驱风电系统中,单位因数控制可以有效降低变流器容量,无速度传感器控制可以替代常规编码器参与控制并获得良好效果,从而证实了所采用的单位因数控制和无速度传感器控制策略的有效性。

Sensorless Based Unity Power Factor Control for PMSG

The control of permanent magnet synchronous generator(PMSG) is most important for system performance,where the sensorless control applied in direct-driven wind energy conversion system(WECS) is also paid attention to.Consequently,to reduce the converter power rating of direct-driven WECS,unity power factor(UPF) control method was used to control PMSG;and the PLL based sensorless control strategy was adopted to determine the speed and phase of the PMSG.Then the validity of the applications of UPF control and...