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@inproceedings{chiu:ipac2021-wepab372,
author = {Y.F. Chiu and W.S. Chan and K.C. Kuo and Y.-C. Lin},
title = {{Design and Construction of Uninterruptible Paralleling Transfer Switches for an Emergency Power System in Taiwan Light Source}},
booktitle = {Proc. IPAC'21},
pages = {3581--3584},
eid = {WEPAB372},
language = {english},
keywords = {operation, controls, cryogenics, ECR, MMI},
venue = {Campinas, SP, Brazil},
series = {International Particle Accelerator Conference},
number = {12},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2021},
issn = {2673-5490},
isbn = {978-3-95450-214-1},
doi = {10.18429/JACoW-IPAC2021-WEPAB372},
url = {https://jacow.org/ipac2021/papers/wepab372.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-WEPAB372},
abstract = {{The ATS of an emergency power system in Utility Building II has operated over 18 years; in recent years the failure rate is gradually increasing because of aged components. To improve old switches, schemes of upgrading and developing new and efficient transfer switches have been conducted cautiously. A new device named an Uninterruptible Paralleling Transfer Switch (UPTS) is designed and implemented to replace an existing ATS to enhance the performance to meet the requirements of uninterrupted power transfer. The UPTS can uninterruptedly switch the grid power to emergency power of a backup generator during a planned utility power outage, and also exactly switch emergency power to the grid power uninterruptedly when the utility power is restored. If grid power is unexpectedly lost, UPTS acts like a typical ATS, automatically transferring power from a primary source to a backup source with switching duration a few seconds. A practical UPTS has been assembled and installed in Utility Building II and has performed well effectively to eliminate power-switching transients.}},
}