三相并网逆变器事件触发有限集模型预测控制  

Event-triggered Finite Control Set Model Predictive Control for Three-phase Grid-connected Inverter

作　　者：刘春喜[1] 郑文帅 乔宇 赵昱诚 LIU Chunxi;ZHENG Wenshuai;QIAO Yu;ZHAO Yucheng(School of Electrical and Control Engineering,Liaoning Technical University,Huludao 125105,China)

机构地区：[1]辽宁工程技术大学电气与控制工程学院,葫芦岛125105

出　　处：《电力系统及其自动化学报》2022年第2期137-143,共7页Proceedings of the CSU-EPSA

摘　　要：针对三相并网逆变器采用有限控制集模型预测控制FCS-MPC(finite control set model predictive control)时计算量大的问题,研究了一种事件触发有限控制集模型预测控制ET-FCS-MPC(event-triggered finite control set model predictive control)方法。在FCS-MPC中,采用两步预测控制,在当前时刻预测估算下一时刻的变量值,并以该值为起点再进行一次预测,实现对延时的补偿。采用矢量角补偿法对未来2个周期的参考值进行修正,以减小参考值不变引入的误差。通过事件触发控制,系统仅在误差超过预定阈值时才触发FCS-MPC,去掉多余的优化操作,提高系统的动态响应速度。在Matlab/Simulink中搭建了三相全桥逆变器仿真模型,仿真结果验证了理论分析的正确性。Aimed at the problem of a large amount of calculation when a three-phase grid-connected inverter adopts the finite control set model predictive control(FCS-MPC),an event-triggered FCS-MPC(ET-FCS-MPC)method is stud⁃ied.In FCS-MPC,a two-step predictive control is used at the current moment to predict and estimate the variable value at the next moment,which is further used as the starting point to make another prediction,thus realizing the delay com⁃pensation.The vector angle compensation method is used to correct the reference value in the next two cycles to reduce the error caused by the constant reference value.Through the event-triggered control,the system will only trigger FCS-MPC when the error exceeds a predetermined threshold to remove redundant optimization operations,thereby improving its dynamic response speed.A simulation model of three-phase full-bridge inverter is built in Matlab/Simulink,and sim⁃ulation results verify the theoretical analysis.

关 键 词：并网逆变器 事件触发控制 模型预测控制 开关损耗 延时补偿 

分 类 号：TM464[电气工程—电器]