Title:
POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/170869
Kind Code:
A1
Abstract:
Provided is a power conversion device in which a charging unit can be miniaturized. Each phase comprises the following: a positive-side phase arm which is connected to a DC positive-side terminal and which is formed by the multi-stage connection of chopper cells that each include a switching element and a capacitor; a negative-side phase arm which is connected to a DC negative-side terminal and which is formed by the multi-stage connection of chopper cells that each include a switching element and a capacitor; a three-winding transformer which is connected between the positive-side phase arm and the negative-side phase arm; and a plurality of charging units in which a charging resistor and a disconnector are connected in parallel. The three-winding transformer includes a secondary winding which is connected to the positive-side phase arm, and a tertiary winding which is connected to the negative-side phase arm. The negative polarity-side of the secondary winding and of the tertiary winding are mutually connected between each phase or three phases. The charging units are connected between the positive-side phase arm and the secondary winding, or between the negative-side phase arm and the tertiary winding.
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Inventors:
ARAI TAKURO (JP)
SUZUKI DAICHI (JP)
SUZUKI DAICHI (JP)
Application Number:
PCT/JP2016/057711
Publication Date:
October 27, 2016
Filing Date:
March 11, 2016
Export Citation:
Assignee:
TOSHIBA KK (JP)
International Classes:
H02M7/49; H02M7/12; H02M7/48
Foreign References:
| JP2013226029A | 2013-10-31 | |||
| JP2007280358A | 2007-10-25 | |||
| JP2014108000A | 2014-06-09 |
Other References:
See also references of EP 3288169A4
Attorney, Agent or Firm:
KIUCHI, MITSUHARU (JP)
Mitsuharu Kiuchi (JP)
Mitsuharu Kiuchi (JP)
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