三相PWM变换器电流切换预测控制仿真及实验研究  

Simulation and Experiment Research on A Current Switching Predictive Control Method of Three-phase PWM Converter

作　　者：郭鑫[1] 程刚 焦尚彬[1] 刘军[1] GUO Xin;CHENG Gang;JIAO Shangbin;LIU Jun(School of Automation and Information Engineering,Xi’an University of Technology,Xi’an 710048,China)

机构地区：[1]西安理工大学自动化与信息工程学院,西安710048

出　　处：《实验室研究与探索》2023年第8期75-80,共6页Research and Exploration In Laboratory

基　　金：国家自然科学基金青年基金项目(61803300);西安理工大学教学改革项目(xjy2130,xjy1745);信息与控制工程国家级实验教学示范中心2021年度开放课题重点项目(2021ICZD02)。

摘　　要：由于功率开关器件的作用,三相脉冲宽度调制(PWM)变换器呈现典型切换系统特征。相较于广泛使用的变换器线性化建模及控制方法,三相PWM变换器切换系统建模及控制方法能够精确描述变换器工作过程,且具有控制参数少和响应速度快的优势。已有成果存在开关频率不固定和需求高采样频率的问题。针对上述问题,提出一种三相PWM变换器电流切换预测控制方法。所提方法降低了系统采样频率需求并实现了变换器定频切换控制。仿真和实验结果证明了所提方法的有效性。The three-phase pulse width modulation(PWM)converters exhibit typical characteristics of switching systems due to the power switching devices.In comparison with the widely used linearization modeling and control methods,the modeling and control methods of three-phase PWM converters based on switching system theory can accurately describe the working process of the converter,and has the advantages of fewer control parameters and faster response speed.However,current research achievements face challenges including unfixed switching frequency and high sampling frequency.To address these issues,a current switching predictive control method of three-phase PWM converter is proposed.The proposed method reduces the sampling frequency requirement of system and realizes the fixed switching frequency control of converter.Simulation and experimental results demonstrate the effectiveness of the proposed method.

关 键 词：三相脉冲宽度调制变换器 切换系统 切换预测控制 

分 类 号：TM921[电气工程—电力电子与电力传动]