电流源型PWM整流器改进预测滑模控制  

Improved Mode Predictive Sliding Control of Current Source PWM Rectifier

作　　者：黄勇军 李山 郭强[1,2] HUANG Yongjun;LI Shan;GUO Qiang(School of Electrical and Electronic Engineering,Chongqing University of Technology,Chongqing 400054;Chongqing Engineering Technology Research Center of Energy Internet,Chongqing University of Technology,Chongqing 400054)

机构地区：[1]重庆理工大学电气与电子工程学院,重庆400054 [2]重庆理工大学重庆市能源互联网工程技术研究中心,重庆400054

出　　处：《电气工程学报》2024年第2期100-109,共10页Journal of Electrical Engineering

基　　金：重庆市教委科学技术研究计划(KJZD-K201901102);重庆理工大学研究生教育高质量发展行动计划(gzlcx20222020)资助项目。

摘　　要：针对三相电流源型整流器(Current source rectifier,CSR)拓扑提出了一种改进预测控制策略。首先,在CSR交流侧,对传统有限集模型预测控制进行了优化预测算法,减小了程序计算负担;其次,在CSR直流侧,采用滑模控制得到网侧有功功率参考值,提高了系统的动态性能。针对CSR交流侧LC滤波器容易产生谐振的问题,所提控制策略的代价函数增加了有源阻尼约束项;采用龙伯格状态观测器观测CSR交流侧电容电压,减少了传感器的使用。基于功率流的定量分析生成网侧电流参考,使得整流器能够在不平衡电网电压的情况下能实现恒定输出电流、网侧电流正弦化和高输入功率因数。最后,通过Matlab/Simulink仿真与样机试验验证了所提控制策略的正确性。An improved predictive control strategy is proposed for the three phase current source rectifier(CSR)topology.Firstly,on the CSR AC side,the traditional finite set model predictive control is optimized with the prediction algorithm,which reduces the computational burden of the program.Secondly,on the CSR DC side,sliding mode control is used to obtain the grid side active power reference value,which improves the dynamic performance of the system.Aiming at the problem that the LC filter on the AC side of the CSR is prone to resonance,an active damping constraint is added to the cost function of the proposed control strategy;the Lomborg state observer is used to observe the capacitor voltage on the AC side of the CSR,which reduces the use of sensors.Grid side current reference is generated based on quantitative analysis of power flow,enabling constant output current,grid side current sinusoidal,and high input power factor even with unbalanced grid voltages.Finally,the correctness of the proposed control strategy is verified by Matlab/Simulink simulation and prototype experiments.

关 键 词：模型预测 状态观测器 电网电压不平衡 有源阻尼 滑模控制 谐波分析 

分 类 号：TM461[电气工程—电器]