%0 Journal Article
%T Control scheme for three-phase pulse-width-modulation rectifier under unbalanced grid conditions<br>不平衡电网中三相脉冲调宽整流器的控制
%A KANG Zhong-jian
%A CHEN Tian-li
%A ZI Shu-wei
%A WANG Sheng-hu
%A LIU Xing
%A WANG Ping
%A <br>康忠健
%A 陈天立
%A 訾淑伟
%A 王升花
%A 刘星
%A 王平
%J 控制理论与应用
%D 2010
%I 
%X By the mathematical model of the pulse-width-modulation(PWM) rectifier and the characteristics of the unbalanced grid, we propose a new dual close-loop controller for the three-phase rectifier to reduce the second-harmonic power content on the DC side when the grid voltages are unbalanced. A fuzzy PI control is used in the voltage outer-loop to improve the speed of the dynamic response. Separate controls for the positive and negative sequence currents are employed in the current inter-loop with no decomposition of the current. The simulation results show that the proposed controller adjusts the DC voltage rapidly, reduces the harmonic power content and improves the dynamic performance of rectification under the unbalanced grid voltage condition.
%K three-phase rectifier
%K unbalanced grid
%K the second harmonic power
%K fuzzy PI control
%K dual close-loop control<br>三相整流器
%K 不平衡电网
%K 二次谐波功率
%K 模糊PI控制
%K 双闭环控制
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=970898A57DFC021F93AB51667BAED7F7&aid=5C47F26DC758678893528A812D1548BA&yid=140ECF96957D60B2&vid=DB817633AA4F79B9&iid=5D311CA918CA9A03&sid=FB3C6F66BC48DD45&eid=47D3259DD85FC8F7&journal_id=1000-8152&journal_name=控制理论与应用&referenced_num=0&reference_num=10