基于自抗扰的多VIENNA整流器谐振现象抑制策略  

Strategy for Suppressing Resonance Phenomena of Multiple VIENNA Rectifiers Based on Auto Disturbance Rejection

作　　者：周金博 刘超 Zhou Jinbo;Liu Chao(School of Electrical Engineering,Shanghai Electric Power University,Shanghai 200090,China)

机构地区：[1]上海电力大学电气工程学院,上海200090

出　　处：《电气自动化》2024年第6期89-92,共4页Electrical Automation

基　　金：国家自然科学基金项目(51777120)。

摘　　要：针对VIENNA整流器系统因高频谐振尖峰而引起的谐振现象,设计了一种基于线性自抗扰和比例积分控制相结合的闭环控制策略。根据单个VIENNA整流器的电路拓扑模型,建立单个VIENNA整流器在两相旋转坐标系下的数学模型,并分析引发VIENNA整流器谐振现象的机理,同时设计二自由度的线性自抗扰控制对系统中的二阶环节进行控制,并利用比例积分控制对一阶系统进行控制,从而形成改进线性自抗扰双闭环控制策略;最后,在MATLAB/Simulink平台中搭建多VIENNA整流器的并联系统,并同时对比例积分控制、改进线性自抗扰控制进行试验对比。结果表明:改进线性自抗扰不仅具有较优的谐振现象抑制能力,而且谐波畸变率为0.75%,提高了多VIENNA整流器的稳定性和鲁棒性。A closed-loop control strategy based on a combination of linear self-disturbance rejection and proportional integral control was designed to address the resonance phenomenon caused by high-frequency resonance spikes in the VIENNA rectifier system.Based on the circuit topology model of a single VIENNA rectifier,a mathematical model of a single VIENNA rectifier in a two-phase rotating coordinate system was established,and the mechanism that caused resonance phenomenon of the VIENNA rectifier was analyzed.At the same time,a two degree of freedom linear self-disturbance rejection control was designed to control the second-order link in the system,and proportional integral control was used to control the first-order system,thereby forming an improved linear self-disturbance rejection and dual closed-loop control strategy;finally,a parallel system of multiple VIENNA rectifiers was built on the MATLAB/Simulink platform,and the experimental comparisons were made between proportional integral control and improved linear active disturbance rejection control.The results show that the improved linear auto disturbance rejection not only has better resonance suppression ability,but also a harmonic distortion rate of only 0.75%,which improves the stability and robustness of multiple VIENNA rectifiers.

关 键 词：多VIENNA整流器并联系统 谐振现象 线性自抗扰 比例积分 

分 类 号：TM46[电气工程—电器]