有源电力滤波器电流环高性能补偿控制策略分析  

Analysis of Current Loop High Performance Compensation Control Strategies for Active Power Filter

作　　者：陈玉庆[1] 蔡彬[1] 

机构地区：[1]曲阜师范大学电气信息与自动化学院,日照276826

出　　处：《电气自动化》2009年第5期64-67,共4页Electrical Automation

摘　　要：文章对传统电流环PI控制器检测误差进行了详细的理论分析,指出了检测负载侧谐波电流的局限性,提出了一种电源侧电流前馈补偿的控制器。该控制器基本上可以做到谐波指令的无静差跟踪,具有良好的补偿性能,克服了传统检测负载侧谐波电流时PI控制器的缺陷,而且具有传统检测负载侧谐波电流的灵活性,即使负载谐波电流高于有源电力滤波器的容量,也能够基本上无静差输出,具有一定的理论意义和工程应用价值。理论分析和仿真验证了此种新型控制策略的正确性和有效性。Three-phase shunt active power filter （APF） are often used to compensate the harmonic and reactive current derived from non-linear load. But many non-ideal factors, such as the limited bandwidth of output current loop and the time lag of signal sensing circuit and reference current generation etc, will deteriorate the compensation effect. Proportion-Integral （PI） controller cannot be used simply to control the output current without any steady error due to its limited current tracking capability. A novel output current control arehiteeture in the synchronous rotating frame with ordinary PI and current harmonies of power source feedforward is proposed in this paper to enhanee the compensation characteristic of three-phase shunt APF. The feasibility of this output current controller architecture is verified completely by theoretic analysis and experimental results in detail.

关 键 词：电源侧电流前馈控制器 检测误差 谐波检测 电流补偿 

分 类 号：TM714[电气工程—电力系统及自动化]