A novel single-phase AC-AC converter for circuit breaker testing application
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Publication Details
Author list: Kitcharoenwat S., Konghirun M., Sangswang A.
Publisher: Institute of Electrical and Electronics Engineers
Publication year: 2014
Journal: IEEE Transactions on Industry Applications (0093-9994)
Volume number: 50
Issue number: 6
Start page: 3867
End page: 3875
Number of pages: 9
ISSN: 0093-9994
eISSN: 1939-9367
Languages: English-Great Britain (EN-GB)
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Abstract
This paper presents a novel single-phase ac-ac converter with power factor correction and output current control for circuit-breaker testing according to the IEC 60898 standard. The important advantages of the proposed circuit are low component count and fast responses for the standard requirement, especially a current step at the beginning of the test. The proposed single-phase ac-ac converter can operate in either buck or boost mode to accommodate the need for a wide range of output current while satisfying the ramping and step current requirements in the standard. The control circuits consist of two parts, dc voltage control of dc-link capacitors and ac output current controls operating simultaneously. The proposed circuit is verified through both computer simulation and hardware experiment. An example of a 50 A circuit breaker testing according to the IEC 60898 is demonstrated in the paper. ฉ 1972-2012 IEEE.
Keywords
Buck'boost capability, circuit-breaker (CB), single-phase ac'ac converter