基于电源电流控制的三相SAPF控制与设计  

Control and design of three-phase shunt active power filter based on supply current control

作　　者：刘芳[1] 张兴[1] 

机构地区：[1]合肥工业大学电气与自动化工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2008年第9期1373-1377,共5页Journal of Hefei University of Technology：Natural Science

摘　　要：文章全面分析了基于电源电流控制的三相并联型有源电力滤波器SAPF的控制方案,建立了基于同步旋转d-q坐标系的典型双环控制结构。在电流控制中,针对负载谐波性质对电流补偿特性的影响采用了在负载侧串入电感以延缓这种电流变化率,从而降低电流内环控制难度的方法;针对传统PI调节器的不足采用了电流预测控制来改善系统的动态响应。控制系统采用根轨迹和阶跃响应相结合的系统综合方法进行了设计。最后,建立了三相SAPF的实验平台,实验结果验证了上述方案的正确性和有效性。This paper comprehensively analyzes the whole control scheme of 3-phase shunt active power filter（SAPF） based on supply current control. Typical double-loop control is structured based on synchronous rotating d-q reference. In view of the influence of harmonics loads, inductances are placed on the AC load side to reduce difficulty of current control by reducing the current change rate. With the consideration of the drawbacks of conventional PI control, current predictive control is used to improve dynamic performance. Root locus and step response are used to design the control system. At last, a three-phase SAPF is constructed and experiment results prove the correctness and validity of this control scheme.

关 键 词：电源电流控制 双环控制 电流预测控制 

分 类 号：TM921.5[电气工程—电力电子与电力传动]