Title:
POWER CONVERSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/177130
Kind Code:
A1
Abstract:
Provided is a power conversion system which can suppress a fault in a short-circuiting switch that bypasses a fault unit and enhance the reliability and redundancy of the system. The power conversion system (100) is provided with a plurality of power converter units (10) that are formed by using semiconductor switch elements and are connected in series, and comprises: switch elements (201, 211) that are provided to input terminals and/or output terminals of the power converter units (10) and bypass the power converter units (10); and overvoltage suppressing elements (202, 212) which are connected in parallel with the switch elements (201, 211) and in which conducting states are changed by an application of a prescribed voltage.
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Inventors:
URAI HAJIME (JP)
KAMIZUMA HIROSHI (JP)
FURUKAWA KIMIHISA (JP)
NAKAO NORIYA (JP)
NAKATSU KINYA (JP)
KAMIZUMA HIROSHI (JP)
FURUKAWA KIMIHISA (JP)
NAKAO NORIYA (JP)
NAKATSU KINYA (JP)
Application Number:
PCT/JP2021/007046
Publication Date:
September 10, 2021
Filing Date:
February 25, 2021
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H02M7/12; H02M7/48
Foreign References:
| JPS552345A | 1980-01-09 | |||
| JP2020036307A | 2020-03-05 | |||
| JP2019145456A | 2019-08-29 | |||
| JP2019527932A | 2019-10-03 | |||
| JPH1075580A | 1998-03-17 | |||
| JP2000245168A | 2000-09-08 |
Other References:
See also references of EP 4117162A4
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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