一种简单有效的UPS逆变器抗直流偏置技术  

Simple and Effective DC Bias Rejection Technique for UPS Inverters

作　　者：张凯[1] 熊健[1] 康勇[1] 陈坚[1] 

机构地区：[1]华中科技大学,湖北武汉430074

出　　处：《电力电子技术》2006年第2期37-39,共3页Power Electronics

基　　金：国家自然科学基金项目(项目号50207003)~~

摘　　要：通过对UPS逆变器直流不平衡问题的深入分析表明,在多数情况下该问题主要源自于输出电压瞬时控制算法所产生的直流偏置。在此结论的基础上,针对采用重复控制的场合提出了一种简单有效的直流偏置抑制技术,其效果得到了实验验证。文中给出了该抑制算法的一种变形形式,以适应非重复控制场合的应用。Based on an in-depth analysis of the DC imbalance issue of UPS inverters, an observation is made that in most cases where instantaneous voltage feedback control is applied,the control algorithm itself is the most significant cause of the problem since it inevitably generates DC bias during practical operation.In this light,a simple DC-bias rejection algorithm which can be seamlessly integrated into a repetitive controller is proposed.Experlmental results verified its effectiveness. An alternative form of the algorithm is also provided for non-repetitive-control cases.

关 键 词：逆变器 不间断电源 控制 

分 类 号：TM464[电气工程—电器]