摘要
针对VIENNA整流器采用传统比例积分(PI)控制器跟踪正弦电流信号存在稳态误差及比例谐振(PR)控制器输入电流过零畸变问题,提出引入占空比前馈的平均电流PR控制策略,同时为进一步减少甚至消除网侧电流谐波分量,电流内环采用了基于PR控制器的并联多次谐波补偿器。结果表明所提控制策略系统响应快速、有效实现了三相三电平VIENNA整流器输入网侧电流无静差跟踪,直流输出电压平衡度好、抗扰性能优良。
In view of the VIENNA rectifier with traditional proportional integral （PI） controller to track the sinusoidal current signal is input current zero steady-state error and current zero distortion problem when adopt proportional resonant （PR） controller, puts forward duty ratio feed forward based on PR control strategy to eliminate the above problem.To reduce and eliminate the harmonic component of grid-side current, multiple harmonic of PR controls in current inner loop is adopted which effectively improving the power density of the VIENNA rectifier.The experimental results show that the design of the control strategy of system with speedy responses, good balance of direct output voltage and excellent interference resistance which realize the unit power factor effectively.
出处
《电力电子技术》
CSCD
北大核心
2016年第3期67-70,共4页
Power Electronics
基金
陕西省重点学科建设专项基金(5X1301)
高等学校博士学科点专项科研基金(20126118110009)~~
关键词
整流器
连续模式
占空比前馈
分次谐波补偿
中点平衡
rectifier
continuous mode
duty ratio feed forward
harmonic compensation
neutral point balance
