基于改进重复控制和双闭环PI控制的逆变器研究  

Research on the inverter based on improved repetitive control combined with dual loop PI control

作　　者：宋建成[1] 刘国瑞[1] 李永学[2] 付峻青[2] 宋玉峰[2] 樊志坚 黄保柱 

机构地区：[1]太原理工大学电气与动力工程学院,山西太原030024 [2]山西晋城无烟煤矿业集团有限责任公司,山西晋城048000 [3]上海自间电控设备有限公司,上海201317

出　　处：《煤炭学报》2011年第10期1768-1772,共5页Journal of China Coal Society

基　　金：国家"十一五"科技支撑计划重点资助项目(2007BAK29B05;2007BAB13B01);山西省高等学校中青年拔尖创新人才计划项目

摘　　要：针对逆变器由于输入直流电压波动、桥臂控制死区和带非线性负载引起输出电压波形畸变,供电品质下降等问题,建立了PWM逆变器的数学模型,提出了一种基于改进重复控制和双闭环PI控制相结合的逆变器新型控制方案,采用改进重复控制方法提高逆变器的稳态精度,利用双闭环PI控制方法改善逆变器的动态特性。该方案在一套基于STM32F103VB控制系统的UPS电源装置逆变单元进行了相关实验,实验结果表明,设计的逆变器稳态精度高,动态响应快。In order to solve the problems such as output voltage waveform distortion and power quality decline owing to inverter input DC voltage fluctuation,the bridge arm control deadtime and nonlinear loads etc,a mathematical model of PWM inverter was established,and a new inverter control scheme based on improved repetitive control method combined with dual-loop PI control method was presented.The dual-loop PI control method was used to improve the dynamic characteristics of the inverter and the improved repetitive control method was adapted to increase the steady state accuracy.The experiments related to the control scheme were done in the base of inverter unit of UPS power device controlled by STM32F103VB,the expermental results show that the inverter is of good characteristics,such as high steady accuracy and fast response and so on.

关 键 词：重复控制 双闭环PI调节 PWM逆变器 电容电流内环 

分 类 号：TD611.3[矿业工程—矿山机电]