|
 |
| Bimonthly Since 1986 |
ISSN 1004-9037
|
|
 |
|
|
| Publication Details |
Edited by: Editorial Board of Journal of Data Acquisition and Processing
P.O. Box 2704, Beijing 100190, P.R. China
Sponsored by: Institute of Computing Technology, CAS & China Computer Federation
Undertaken by: Institute of Computing Technology, CAS
Published by: SCIENCE PRESS, BEIJING, CHINA
Distributed by:
China: All Local Post Offices
|
|
|
|
| |
|
|
|
|
|
|
|
Abstract
Uninterruptible Power Supplies (UPS) are the system that is used to provide power back-up when the electricity fails. In Online UPS System, when the power is returned after failure, it changes from battery mode to online/normal mode. During this time an unwanted signal or noise is generated in the bypass path of the system. This signal causes the triggering of Silicon Controlled Rectifiers (SCRs) present in the Static Bypass Switch. Such a thyristor triggering can result in short circuit. It is also associated with large voltage and large current which results in huge power loss and thus the device may end up being damaged. In order to avoid this, a contactor circuit has been proposed. The usage of contactor in the circuit reduces the noise level and increases the efficiency of the system by 96%. Thus, we can use the UPS uninterruptedly in various areas without any distortions.
Keyword
silicon-controlled rectifier [SCR]; static bypass switch; triggering; short circuit; contactor; distortion; noise; online UPS; power; efficiency.
PDF Download (click here)
|
|
|
|
|
