摘要
为解决两台并联整流器结构所导致的环流问题以及不均流问题,提出一种新型的前馈+反馈环流控制策略。先通过拉普拉斯变换将并联整流器环流的时域数学模型转化为复频域数学模型,再考虑前馈控制和反馈控制各自优点以及前馈控制可以减少反馈控制的负担,设计出新型的前馈+反馈环流控制器,通过运用代数稳定判据,证明控制系统最终会达到稳定。最后在Matlab/Simulink平台上对并联整流器结构进行仿真实验,结果验证了新型的前馈+反馈环流控制策略的有效性。
To solve the problems of circulating current and uneven current caused by the structure of two parallel rectifi⁃ers,a novel feedforward and feedback circulating current control strategy is proposed.First,the time-domain mathemat⁃ical model of the circulating current of parallel rectifiers is transformed into a complex frequency-domain mathematical model by Laplace transform.Then,considering the respective advantages of feedforward control and feedback control and the fact that the feedforward control can reduce the burden of feedback control,a novel feedforward and feedback circulating current controller is designed.By using the algebraic stability criterion,it is proved that the control system will eventually achieve stability.Finally,a simulation experiment of the parallel rectifier structure is carried out on the Matlab/Simulink platform,and results verify the effectiveness of the novel feedforward and feedback circulating current control strategy.
作者
周雪松
赵兴
马幼捷
ZHOU Xuesong;ZHAO Xing;MA Youjie(School of Electrical Engineering and Automation,Tianjin University of Technology,Tianjin 300384,China)
出处
《电力系统及其自动化学报》
CSCD
北大核心
2023年第4期9-17,40,共10页
Proceedings of the CSU-EPSA
基金
国家自然科学基金资助项目(51877152)。
关键词
并联
整流器
环流
前馈+反馈
parallel connection
rectifier
circulating current
feedforward and feedback
