摘要
基于背靠背变流器的大功率双馈风力机并网时,由于电网自身谐波的污染,会导致系统并网电流谐波问题。基于二阶广义积分器(SOGI)进行锁相环(PLL)控制,实现电网频率的稳定检测;基于定子磁链定向控制,采用谐振控制器实现对并网电流谐波的抑制。通过仿真和实验验证了控制算法的有效性。
When high-power doubly-fed wind generation system based on the doubly-fed converter is grid connected, harmonic pollution due to the grid voltage will lead to the harmonic currents.By using the second order generalized integrator(SOGI),the phase locked loop (PLL)controller can calculate the grid frequency stably and accurately.Based on the stator flux directional control,the resonant controller is proposed to suppress the harmonic currents.Simulations and experiments show the we/l performance of the control strategy in dealing with the harmonic problems of grid voltage.
作者
林显琦
赵彤
LIN Xian-qi;ZHAO Tong(CRRC Qingdao Sifang Rolling Stock Research Institute Co.,Ltd.,Qingdao 266000,China)
出处
《电力电子技术》
CSCD
北大核心
2019年第2期96-99,共4页
Power Electronics
关键词
二阶广义积分器
谐波
谐振控制器
second order generalized integrator
harmonic
resonant controller
