两电平UPQC自抗扰无源控制策略研究  

Research on active disturbance rejection passivity-based control strategy of two-level UPQC

作　　者：刘金昌 王久和[1] 常文慧[2] 陈东雪 LIU Jinchang;WANG Jiuhe;CHANG Wenhui;CHEN Dongxue(School of Automation Beijing Information Science and Technology University,Beijing 100192 China;School of Information Science and Technology Yanching Institute of Technology,Sanhe Hebei 065201 China)

机构地区：[1]北京信息科技大学自动化学院,北京100192 [2]燕京理工学院信息科学与技术学院,河北三河065201

出　　处：《燕山大学学报》2022年第5期417-426,共10页Journal of Yanshan University

基　　金：国家自然科学基金资助项目(51777012);北京市自然科学基金-市教委联合资助项目(KZ201911232045)。

摘　　要：为改善统一电能质量调节器的电网电压和负载电流的补偿能力、抗干扰能力和稳态性能,提出了统一电能质量调节器自抗扰无源控制双闭环新型控制策略,即电压环和电流环分别采用自抗扰控制和无源控制。新型控制策略处理电网电压和负载电流变化时可以使直流侧电压快速恢复和稳定;并且通过自抗扰控制器产生更为精确的期望电流,使电网侧补偿电压的跟踪能力更强。MATLAB/Simulink实验平台仿真结果表明,与PI无源控制策略相比,自抗扰无源控制策略在电网电压暂升、暂降、谐波和非线性负载的情况下,可使统一电能质量调节器获得更好的负载电压和电网电流。In order to improve the compensation ability, anti-interference ability and steady-state performance of grid voltage and load current of unified power quality conditioner, a new double closed-loop control strategy of unified power quality conditioner active disturbance rejection passivity-based control is proposed, that is, active disturbance rejection control and passivity-based control are adopted for voltage loop and current loop respectively.The new control strategy can quickly restore and stabilize the DC side voltage when dealing with the changes of grid voltage and load current.Furthermore, the active disturbance rejection controller generates more accurate expected current, which makes the tracking ability of compensation voltage on the grid side stronger.The simulation results of the MATLAB/Simulink experimental platform show that, compared with the PI passive control strategy, the active disturbance rejection passivity-based control strategy can obtain better load voltage and grid current of unified power quality conditioner in the case of grid voltage sag, swell, harmonic and nonlinear load.

关 键 词：无源控制 统一电能质量调节器 自抗扰 双闭环控制 

分 类 号：TM76[电气工程—电力系统及自动化]