基于复矢量电流调节器的指定次谐波电流控制方法研究  

Selective-harmonic active power filter using complex vector PI current regulator

作　　者：钟畅[1] 游小杰[1] 郭希铮[1] 

机构地区：[1]北京交通大学电气工程学院,北京100044

出　　处：《电工电能新技术》2014年第6期23-29,57,共8页Advanced Technology of Electrical Engineering and Energy

基　　金：国家电网公司科技项目资助(合同号:DL71-10-001)

摘　　要：三相并联型有源电力滤波器可以补偿电力系统中非线性负载引起的谐波与无功电流,其补偿性能取决于电流调节器的控制精度与动态响应。本文采用复矢量分析法,提出一种复矢量PI调节器控制方法,该方法对系统参数变化的鲁棒性较好;针对数字控制系统的固有延时,在离散域下,采用电压指令相位延迟补偿方法,消除延时对系统稳定性的影响;通过增加虚拟电阻,提高控制器的抗干扰性能,提高谐波补偿精度。仿真结果验证了上述方法的有效性。Three-phase Shunt Active Power Filter（ SAPF） is a power electronic device compensating the harmonics and inactive power produced by non-linear load in the power system. And its compensation performance is primarily decided by the control accuracy and dynamics of the current regulator. In this paper,a complex vector PI current regulator is introduced which has decent robustness for system parameters. In order to eliminate influences of the intrinsic delay in the digital control system on the stability,a method for compensating the delay by advancing the phase of voltage command is employed. Additionally,the virtual resistance method is proposed for the sake of enhancing the stiffness of system and improving the accuracy of selective harmonic compensation. Finally,simulation tool is used to validate the proposed method.

关 键 词：指定次谐波消除 延时补偿 复矢量电流调节器 虚拟电阻法 

分 类 号：TM46[电气工程—电器]