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Improvement of Naval Combat System UPS under Abnormal Transients  

Kim, Sung-Who (NAVAL R&D Center, Hanwha Systems)
Choi, Han-Go (Department of Electronic Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of the Institute of Convergence Signal Processing / v.19, no.3, 2018 , pp. 97-103 More about this Journal
Abstract
This paper addresses an improved naval combat UPS(Uninterruptable Power Supply) system under abnormal transients. Previously, thermistor and varistor elements were used to cope with transient overvoltage and overcurrent, however the UPS was frequently unavailable because it was vulnerable to abnormal transient voltage generated during system operation. In order to overcome this problem and protect UPS system, this paper proposes an input power cut-off circuit that detects the initial input power and abnormal transient voltage generated during operation, improvement of power control sequence, and a method to prevent malfunction of an inverter and CPU. The UPS system implementing the proposed method was simulated by input power variable test using programmable AC/DC generator, and finally validated its reliability and stability through field tests by mounting on multifunctional console of naval combat system.
Keywords
UPS; Abnormal Transient; Overcurrent; Overvoltage; Ungrounded System;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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