三电平逆变器固定开关频率的模型预测开关序列控制  

Model predictive switching sequence control of three-level inverter with fixed switching frequency

作　　者：朱敏龙 张煌辉 张杰梁 金涛[1] ZHU Minlong;ZHANG Huanghui;ZHANG Jieliang;JIN Tao(College of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350108,China;Fujian Metrology Institute,Fuzhou 350003,China)

机构地区：[1]福州大学电气工程与自动化学院,福建福州350108 [2]福建省计量科学研究院,福建福州350003

出　　处：《中国测试》2025年第2期97-105,共9页China Measurement & Test

基　　金：国家自然科学基金(51977039);中央引导地方科技发展专项(2021L3005)。

摘　　要：为解决传统有限控制集模型预测控制存在开关频率不固定的缺点,该文提出一种基于离散虚拟电压矢量的最优开关序列模型预测控制策略。所提策略采用开关序列的方式来固定开关频率,利用离散空间矢量的原理预定义虚拟电压矢量,引入一个查找表来描述虚拟电压矢量的开关序列占空比,并通过一种有效的寻优算法来减少控制策略的计算负担。仿真结果表明:所提控制策略在固定逆变器开关频率的同时,避免繁琐的权重系数整定过程,直流侧电容电压偏移控制在3%以内。In order to solve the problem of unfixed switching frequency in traditional finite control set model predictive control,this paper proposes an optimal switching sequence model predictive control strategy based on discrete virtual voltage vector.The proposed strategy uses switching sequence to fix the switching frequency,predefines the virtual voltage vector by discrete space vector principle,introduces a lookup table to describe the switching sequence duty ratio of the virtual voltage vector,and introduces an effective optimization algorithm to reduce the computing burden of the control strategy.The simulation results show that the proposed control strategy avoids the tedious weight coefficient setting process while fixing the inverter switching frequency,and the DC capacitor voltage offset is controlled within 3%.

关 键 词：三相三电平逆变器 模型预测控制 开关频率 

分 类 号：TB9[一般工业技术—计量学] TM464[机械工程—测试计量技术及仪器]