摘要
有源滤波器主电路中,采用电流源型逆变器比电压源型逆变器有更强的电流控制能力和更高的可靠性.本文根据电流源型有源滤波器的状态模型,提出了一种幂次趋近律滑模变结构控制策略,该方法具有较好抑制滑模变结构的抖振、响应速度快、稳定性好和对外界干扰不敏感等特点,与直接电流PWM策略相结合,可以准确、快速地实现有源滤波、无功补偿和不对称负载补偿的功能.借助PSCAD仿真软件验证了该控制方法的有效性.
In the main circuit of active power filter,the current source inverter has stronger current control capability and higher reliability than the voltage source inverter.According to the state model of current source active filter(CSAPF),a kind of sliding mode variable structure control strategy based on power reaching law for CSAPF was proposed,which has the advantage of better chattering suppression in sliding mode variable structure control,quick response,good stability and insensitivity to external interference.Combined with the direct current PWM,this method can accurately and quickly realize active filtering,reactive power compensation and asymmetric load compensation.PSCAD simulation has proved the effectiveness of the method.
作者
侯勇
何献章
王景华
李冬冬
王以忠
HOU Yong;HE Xianzhang;WANG Jinghua;LI Dongdong;WANG Yizhong(College of Information and Automation,Tianjin University of Science&Technology,Tianjin 300222,China;Hebei Delite Electrical Appliances Co.,Ltd.,Shijiazhuang 050000,China)
出处
《天津科技大学学报》
CAS
2020年第5期32-35,80,共5页
Journal of Tianjin University of Science & Technology
基金
2018年度河北省省校合作开发奖金支持项目。
关键词
有源滤波器
电流源型逆变器
滑模变结构控制
幂次趋近律
active power filter
current source APF
sliding mode variable structure control
power reaching law
