Simplified voltage-sag filler for line-interactive uninterruptible power supplies

被引：35

作者：

Arias Perez de Azpeitia, Manuel ^{[1
]}

Fernandez, Arturo ^{[1
,2
]}

Gonzalez Lamar, Diego ^{[1
]}

Rodriguez, Miguel ^{[1
]}

Maria Hernando, Marta ^{[1
]}

机构：

[1] Univ Oviedo, Dept Elect & Elect Engn, Gijon 33204, Spain

[2] European Space Agcy, Power & Energy Convers Div, F-75738 Paris, France

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2008年 / 55卷 / 08期

关键词：

filler; notch; sag; simplified; uninterruptible power supply (UPS);

D O I：

10.1109/TIE.2008.918595

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

There are three types of static uninterruptible power supplies (UPSs): passive standby, line interactive, and double conversion. The last one protects the load against all types of line disturbances, but it is the most expensive and the one with the lowest efficiency. On the other hand, passive-standby and line-interactive UPSs have higher efficiency and lower cost, but they show an important drawback: a switching time from normal to stored-energy mode. As a consequence, there is a notch in the UPS output voltage during this switching time. In a previous paper, the authors proposed a method for filling these voltage notches with a sinusoidal waveform generated by a switch-mode converter. In this one, a simplified notch filler is proposed. It consists of two capacitors, one charged with positive voltage and the other with negative voltage. If the fault occurs in the positive period, the positive-charged capacitor is connected to the load. This connection is then modulated in order to obtain a sinusoidal waveform at the load. In the negative period, the other capacitor is used in the same way.

引用

页码：3005 / 3011

页数：7

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