Title:
POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/116785
Kind Code:
A1
Abstract:
The present invention achieves a low-cost power conversion device that performs PWM synchronization. This power conversion device is provided with power conversion cells 101-104 that supply the voltage of a power supply 300 to a load 400, and a central control unit 200 that controls these power conversion cells. The power conversion cells 101-104 respectively comprise first converters 141-144 and first control circuits 211-214 for respectively controlling these first converters, second converters 151-154 and second control circuits 221-224 for respectively controlling these second converters by pulse width modulation, and transformers 131-134 respectively connected between the first converters 141-144 and the second converters 151-154. The central control unit 200 transmits a first control signal and a synchronization signal to the first control circuits 211-214 of the power conversion cells 101-104, the first control circuits 211-214 transmit a second control signal to the second control circuits 221-224 of the power conversion cells 101-104 upon receipt of the synchronization signal, and the second control circuits 221-224 reset a carrier signal for the pulse width modulation upon receipt of the second control signal.
Inventors:
KADOTA MITSUHIRO (JP)
YONEKAWA AKIRA (JP)
SUGIYAMA YOSHIKAZU (JP)
YONEKAWA AKIRA (JP)
SUGIYAMA YOSHIKAZU (JP)
Application Number:
PCT/JP2018/041154
Publication Date:
June 20, 2019
Filing Date:
November 06, 2018
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H02M7/48; H02M7/49
Domestic Patent References:
| WO2017208322A1 | 2017-12-07 |
Foreign References:
| JP2015100262A | 2015-05-28 | |||
| JP2012100398A | 2012-05-24 | |||
| JP2017216809A | 2017-12-07 | |||
| JP2017123781A | 2017-07-13 |
Attorney, Agent or Firm:
KAICHI IP (JP)
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