Invention Grant
- Patent Title: Converter submodule with short-circuit device and power converter having same
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Application No.: US15182746Application Date: 2016-06-15
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Publication No.: US09806599B2Publication Date: 2017-10-31
- Inventor: Martin Geske , Joerg Janning , Thomas Brueckner , Roland Jakob
- Applicant: GE Energy Power Conversion Technology Ltd
- Applicant Address: GB
- Assignee: GE ENERGY POWER CONVERSION TECHNOLOGY LTD
- Current Assignee: GE ENERGY POWER CONVERSION TECHNOLOGY LTD
- Current Assignee Address: GB
- Agency: GE Global Patent Operation
- Agent Scott R. Stanley
- Priority: DE102015109466 20150615
- Main IPC: H02M7/483
- IPC: H02M7/483 ; H02M7/44 ; H02M7/04 ; H02M1/32 ; H02H9/04 ; H02H7/12 ; H01T15/00 ; H01T1/14 ; H01T2/02

Abstract:
A short-circuit device and a protection method for a submodule for a power converter are disclosed. The submodule includes a bridge circuit having at least one power semiconductor branch extending between a first and a second DC voltage node and at least one controllable power semiconductor switch disposed therein to which a freewheeling diode is connected in anti-parallel, and a capacitor connected in parallel to the bridge circuit. The short-circuit device has at least one selected of the freewheeling diodes anti-parallel to the power semiconductor switches of the bridge circuit, wherein the at least one selected freewheeling diode is manufactured in press pack design and rated such that, when a fault occurs in the submodule, the at least one selected freewheeling diode breaks down due to the fault conditions and provides a durable, stable, low-impedance short circuit path between a first and a second AC voltage connection of the submodule.
Public/Granted literature
- US20160365787A1 CONVERTER SUBMODULE WITH SHORT-CIRCUIT DEVICE AND POWER CONVERTER HAVING SAME Public/Granted day:2016-12-15
Information query
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