Title:
POWER SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/207627
Kind Code:
A1
Abstract:
A power supply device characterized by comprising: an AC/DC converter that converts AC voltage inputted from an AC power supply to DC voltage; a plurality of inverter circuits that are connected in parallel to the AC/DC converter, the inverter circuits converting the DC voltage converted by the AC/DC converter to AC voltage; a plurality of transformers for which individual primary windings are connected to the plurality of inverter circuits, and individual secondary windings are serially connected; a resonance circuit for which one end is connected to the serially connected secondary windings of the plurality of transformers, and the other end is connected to a load; and a control circuit that controls the plurality of inverter circuits, the control circuit performing control using a first operating mode that turns on the plurality of inverter circuits and applies a voltage to the load, and a second operating mode that turns on some of the plurality of inverter circuits in a quantity that is less than the number of inverter circuits turned on in the first operating mode. The power supply device is capable of reducing switching loss in a semiconductor.
Inventors:
MURAKAMI SATOSHI (JP)
IWABUKI HIROYASU (JP)
KOBAYASHI RYOSUKE (JP)
MATSUBARA MASATO (JP)
IWABUKI HIROYASU (JP)
KOBAYASHI RYOSUKE (JP)
MATSUBARA MASATO (JP)
Application Number:
PCT/JP2018/016458
Publication Date:
October 31, 2019
Filing Date:
April 23, 2018
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02M7/48; H01S3/00; H01S3/134
Foreign References:
| JPH0870581A | 1996-03-12 | |||
| JP2003125586A | 2003-04-25 | |||
| JPH01134398U | 1989-09-13 | |||
| JP2008005575A | 2008-01-10 |
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (JP)
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