基于傅里叶级数的多时间尺度同步旋转坐标系电流跟踪控制方案  

Multi-Time Scale Synchronous Rotating Frame Using Fourier Series for Harmonic Current Control

作　　者：任磊[1] 姜齐荣[2] Ren Lei;Jiang Qirong(School of Electrical and Electronic Engineering Tianjin University of Technology,Tianjin 300384 China;Department of Electrical Engineering Tsinghua University,Beijing 100084 China)

机构地区：[1]天津理工大学电气与电子工程学院,天津300384 [2]清华大学电机系,北京100084

出　　处：《电工技术学报》2017年第14期45-55,共11页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金重大项目资助(51490680;51490683)

摘　　要：并联有源滤波器(APF)需要对不同频率的谐波电流实施跟踪控制,采用同一时间尺度控制很难实现对各次谐波电流的高准确度跟踪。提出一种基于APF的新型零静差电流跟踪控制算法,该算法使用基于傅里叶级(FS)数建立的多时间尺度同步旋转坐标系和比例积分运算(PI)。相对于常规的零静差控制算法,如比例谐振控制(PR),向量PI控制(VPI)等,提出的零静差电流跟踪控制算法增强了系统频率漂移适应性和抗干扰能力,尤其对高次谐波更加明显。对该控制算法的开环传递函数和闭环传递函数进行了详细分析。仿真和实验结果验证了该算法的有效性。An active power filter(APF)can compensate harmonic currents with different orders.However,the compensating accuracy for different order harmonics varies largely based on one timescale controlling method.A novel zero steady-state error current control strategy for shunt active powerfilters(APF)is proposed based on Fourier series(FS)using multi-time scale synchronous rotatingframe.Compared to general zero steady-state error control algorithm,such as proportional-resonant(PR)and vector PI(VPI)control,the proposed strategy weakens system frequency shift effect andenhances anti-interference ability.With a mathematical model,the open-loop and close-loop transferfunctions of a control system are analysed in detail based on FS.Simulation and experimental resultshave verified the proposed current control strategy.

关 键 词：傅里叶级数 同步旋转坐标系 谐波电流控制 

分 类 号：TM712[电气工程—电力系统及自动化]