大功率三电平PWM整流器无权值系数预测控制  

Predictive control of high-power three-level PWM rectifier without weighting coefficient

作　　者：程玮玮[1] 吴瑞 CHENG Weiwei;WU Rui(Department of Automotive Engineering,Suqian Economic and Trade Higher VocationalTechnical School of Jiangsu,Suqian 223800,China;School of Electrical and Power Engineering,China University of Mining and Technology,Xuzhou 221008,China)

机构地区：[1]江苏省宿迁经贸高等职业技术学校汽车工程系,江苏宿迁223800 [2]中国矿业大学电气与动力工程学院,江苏徐州221008

出　　处：《工矿自动化》2021年第1期81-86,共6页Journal Of Mine Automation

基　　金：江苏省高等学校自然科学研究面上项目(18KJB470009)。

摘　　要：针对传统预测控制算法中成本函数的权值系数设计复杂的问题,提出了一种大功率三电平PWM整流器无权值系数预测控制算法。在引入目标跟踪误差容许界限区间的基础上,计算电流指令跟踪与中点电位调节多目标满意优化控制的Pareto优解集:当Pareto优解集为空集时,利用基于控制偏差程度衡量函数的电流指令跟踪与中点电位调节目标成本函数,消除了传统预测控制中成本函数的权值系数;当Pareto优解集不为空集时,设计了一种新型开关损耗成本函数,实现了整流器低开关频率控制。仿真结果验证了该算法的有效性及动态性能。A high-power three-level PWM rectifier predictive control algorithm without weight coefficients is proposed for the problem of complicated design of the weight coefficients of the cost function in the traditional predictive control algorithm.The Pareto optimal solution set for multi-objective satisfactory optimal control of current command tracking and midpoint potential regulation is calculated based on the introduction of a tolerance interval for the target tracking error.When the Pareto optimal solution set is an empty set,the current command tracking based on the control deviation degree measurement function and the midpoint potential are used to adjust the target cost function so as to eliminate the weight coefficient of the cost function in the traditional predictive control.When the Pareto optimal solution set is not an empty set,a new switching loss cost function is designed to achieve low switching frequency control of the rectifier.The simulation results have verified the effectiveness and dynamic performance of the algorithm.

关 键 词：三电平PWM整流器 预测控制 权值系数 多目标优化 开关损耗 

分 类 号：TD611[矿业工程—矿山机电]