电工技术学报2011，Vol.26Issue(7)：203-209,7.
变电感参数三电平不可逆PWM整流器的电流PI优化控制
Optimized PI Current Controller of Three Level Unidirectional PWM Rectifier Under Variable Inductance
何礼高 1陈鑫兵1
作者信息
- 1. 南京航空航天大学自动化学院,南京210016
- 折叠
摘要
Abstract
In vector controlled three phase three level unidirectional PWM rectifier,the exact inductor value of smoothing chock is needed,however,in compact rectifier,when iron dust core is used,the inductance is varied under different input currents,input voltages and output loads,this variation resulted in nonlinear current loop response and control parameters in digital implementation. So it is difficult to meet the demands of power factor and THD of current when in the condition of wide input voltage range and variable inductance.This paper,by analysis the modeling and current loop transfer function of rectifier,an optimized design of proportion in PI current controller is presented in order to reduce the effect of variable inductor value.Then the controller designing rules are derived with the help of current loop mode.This strategy ensures lower harmonic current and improves the power factor in full load and full range input voltage.Simulation and experimental results verify the feasibility and effectiveness of the proposed control strategy.关键词
变电感参数/三电平PWM整流/矢量控制/宽输入电压/电流环/PI优化控制Key words
Variable inductance/three level PWM rectifier/vector control/wide input voltage range/current loop/optimized PI controller分类
信息技术与安全科学引用本文复制引用
何礼高,陈鑫兵..变电感参数三电平不可逆PWM整流器的电流PI优化控制[J].电工技术学报,2011,26(7):203-209,7.
