摘要
为提高单相PWM整流器输出电压的动态性能,分析了单相PWM整流器内部功率传递关系,提 出一种电容能量反馈与带系数修正负载功率前馈控制策略。通过电容能量反馈减小负载扰动过程中的输 出电压超调量,同时利用带系数修正的负载功率前馈以降低负载扰动对控制系统的影响。通过仿真分析可 知,系统在动态过程中的输出电压超调量由12.5%降为5%,动态调节时间缩短了49ms,验证了此控制策略的 优越性。
In order to improve dynamic performance of single-phase PWM converter output voltage,a control strategy based on feedback of the capacitor energy storage and load power feedforward with coefficient correction was proposed through analyzing the inside power transitive relation of single-phase PWM converter.The output voltage overshoot was decreased by the feedback of the capacitor energy storage while load disturbance,meanwhile the load disturbance′s impact to the system was reduced by load power feed-forward with coefficient correction.According to the simulation,system′s output voltage overshoot was decreased from 12.5%to 5%,dynamic regulating time was decreased 49 ms during the dynamicprocess,the proposed control strategy′s superiority is validated.
作者
陈雨枫
曹太强
彭崇文
林玉婷
CHEN Yufeng;CAO Taiqiang;PENG Chongwen;LIN Yuting(College of Electrical and Electronic Information Engineering,Xihua University,Chengdu 610039,Sichuan,China)
出处
《电气传动》
北大核心
2019年第10期30-33,共4页
Electric Drive
基金
四川省电力电子节能技术与装备重点实验室（szjj2015-066）
省部级学科平台开放课题基金（szjj2017-015）
关键词
单相PWM整流器
电容能量反馈
负载功率前馈
single-phase pulse width modulation rectifier
feedback of capacitor storage
load power feedforward
