基于降阶矢量比例积分器的有源电力滤波器电源电流控制策略  

Source Current Control Scheme for Active Power Filter Based on Reduced Order Vector Proportional Integrator

作　　者：郑宏[1] 林勇 沈思伦 赵伟[1] 曹其超 ZHENG Hong;LIN Yong;SHEN Silun;ZHAO Wei;CAO Qichao(School of Electrical and Information Engineering,Jiangsu University,Zhenjiang Jiangsu 212013,China;Jiangsu Zhuote Electrical Technology Co.Ltd.,Zhenjiang Jiangsu 212013,China)

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013 [2]江苏卓特电气科技有限公司,江苏镇江212013

出　　处：《电子器件》2019年第2期362-368,共7页Chinese Journal of Electron Devices

摘　　要：为了避免有源电力滤波器谐波检测环节带来的检测误差和延迟以及简化控制系统,提出了一种有源电力滤波器电源电流控制方法,将电源电流作为控制目标,同时为了消除负载电流的扰动,引入了负载电流前馈控制。在降阶广义积分器的基础上提出了降阶矢量比例积分器,该控制器不但具有谐振频率处增益无穷大的特点,还考虑控制对象的影响,能够实现零极点相消,具有很好的控制稳定性和精度。仿真和实验结果验证了所提控制方法的有效性,与传统基于负载谐波电流检测与控制的方法相比,具有较好的稳态和动态性能,降低了系统复杂度和成本。In order to avoid the detection error and delay of the active power filter(APF),and to simplify the control system,a novel source current control method for APF is proposed.For the aim to control source current and to eliminate the disturbance of the load current,a load current feed-forward control is introduced.A reduced order vector proportional integrator(ROVPI)is proposed based on reduced order generalized integrator(ROGI).The controller possesses the characteristics of infinite gain at the resonant frequency and the impact of the control plant is considered too,which can realize zero-pole cancellation and have good control stability and precision.The results of simulation and experiment verify the effectiveness of the proposed control method.Compared with the traditional control method,it has better steady-state and dynamic performance and reduces the complexity and cost of the control system.

关 键 词：有源电力滤波器 电源电流控制 负载电流前馈 降阶矢量比例积分器 零极点相消 

分 类 号：TM71[电气工程—电力系统及自动化]