Title:
SUBMODULE OF POWER CONVERTER HAVING BYPASS SWITCH
Document Type and Number:
WIPO Patent Application WO/2021/034152
Kind Code:
A1
Abstract:
The present invention relates to a submodule of a power converter that bypasses a fault current when a failure occurs in the submodule of the power converter. The submodule of a power converter, according to one embodiment of the present invention, comprises: an energy storage unit; at least one power semiconductor circuit connected in parallel to the energy storage unit and composed of a plurality of power semiconductor switches and freewheeling diodes; an auxiliary switching element connected to the energy storage unit and turned on in the event of a failure to conduct a current from the energy storage unit; and a main switching element that is connected in series to an output terminal of the auxiliary switch element and disposed between two output terminals connected to one of the at least one power semiconductor circuit, wherein the main switching element is short-circuited inside by a forced failure caused by a voltage generated by the energy storage unit through the auxiliary switch, thereby connecting the output terminals.
Inventors:
LEE DOO YOUNG (KR)
PARK YONG HEE (KR)
JUNG HONG JU (KR)
PARK YONG HEE (KR)
JUNG HONG JU (KR)
Application Number:
PCT/KR2020/011207
Publication Date:
February 25, 2021
Filing Date:
August 21, 2020
Export Citation:
Assignee:
HYOSUNG HEAVY IND CORP (KR)
International Classes:
H02M1/32; H02M7/483
Domestic Patent References:
| WO2016002319A1 | 2016-01-07 |
Foreign References:
| KR101389579B1 | 2014-04-29 | |||
| US20190131885A1 | 2019-05-02 |
Other References:
AHMED A. ELSEROUGI; AYMAN S. ABDEL-KHALIK; AHMED M. MASSOUD; SHEHAB AHMED: "A New Protection Scheme for HVDC Converters Against DC-Side Faults With Current Suppression Capability", IEEE TRANSACTIONS ON POWER DELIVERY, vol. 29, no. 4, 10 June 2017 (2017-06-10), pages 1569 - 1577, XP011554269, ISSN: 0885-8977, DOI: 10.1109/TPWRD.2014.2325743
WANG LEI; CHENG GUO; BUREAU TIANSHENGQIAO; LI XIN; ZHANG DAI; FAN YOUPING: "Automation and control design of overvoltage protection for sub-modules in modular multilevel converter", 2017 IEEE 2ND INFORMATION TECHNOLOGY, NETWORKING, ELECTRONIC AND AUTOMATION CONTROL CONFERENCE (ITNEC), 15 December 2017 (2017-12-15), pages 1048 - 1052, XP033317085, DOI: 10.1109/ITNEC.2017.8284899
WANG LEI; CHENG GUO; BUREAU TIANSHENGQIAO; LI XIN; ZHANG DAI; FAN YOUPING: "Automation and control design of overvoltage protection for sub-modules in modular multilevel converter", 2017 IEEE 2ND INFORMATION TECHNOLOGY, NETWORKING, ELECTRONIC AND AUTOMATION CONTROL CONFERENCE (ITNEC), 15 December 2017 (2017-12-15), pages 1048 - 1052, XP033317085, DOI: 10.1109/ITNEC.2017.8284899
Attorney, Agent or Firm:
NAMCHON PATENT AND LAW FIRM (KR)
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