中文摘要：

永磁同步发电机定子电流中含有大量谐波,会大大增加电机的铜耗与铁耗,降低发电机组效率。该文利用谐振控制器对交流信号无差控制,针对定子电流中的主要谐波,采用谐振角频率可变的比例积分谐振控制器（PI-resonant controller,PI-RES controller）提出一种新的机侧变流器控制策略,在转子同步旋转坐标系下对定子电流进行控制,对指定次谐波进行抑制。仿真与实验结果表明,所述控制策略对指定次谐波电流抑制效果明显,提高了发电机组的效率。

英文摘要：

Permanent magnet synchronous generator stator current contains a large number of harmonics,which will greatly increase the copper and iron losses,and then reduce the generator efficiency.A new motor-side converter control strategy was proposed base on the frequency variable PI-RES controller for the stator current regulating and the main harmonic stator current inhibiting in the rotor synchronous rotating coordinate system.Simulation and experiment results show that the effect that suppressing the specified harmonic current is remarkable by the propose strategy,and the efficiency of system is improved.