电测与仪表2011，Vol.48Issue(9)：61-64,81,5.
单相PWM整流器高品质网侧电流控制
AC- side Current Control of Single-phase PWM Rectifier with High Quality
摘要
Abstract
AC-side current control of single-phase PWM rectifier is the core component of the control system, but the PI controllers are unable to realize accurate sine-shaped values control. Voltage feed-forward control is also needed to reduce the influence of network voltage disturbance. This paper analyzes the dynamic model of current control system based on PR controllers, which can realize zero steady-state error sine-shaped current tracking because the amplitude-frequency characteristic of PR controllers diverges to infinity at the resonant frequency, no longer needs the voltage feed-forward and the control system is simplified. The root locus method is employed for regulator parameters tuning. There is the inherent second harmonic in the DC-side of single-phase rectifier, in order to reduce the influence on the grid current of the second harmonic,and dynamic compensator is adapted in ac-side current given. The simulation and experiments show that the current control system can realize the high quality control performance of the ac- side current.关键词
单相PWM整流器/电流控制/PR调节器/动态补偿Key words
single-phase PWM rectifier/ current control/ PR controllers/ dynamic compensator分类
信息技术与安全科学引用本文复制引用
杨艳,刘斌,张辑,彭彦卿..单相PWM整流器高品质网侧电流控制[J].电测与仪表,2011,48(9):61-64,81,5.基金项目
福建省自然基金资助项目(2010J01352) （2010J01352）
