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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 (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
IWABUKI, Hiroyasu (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
KOBAYASHI, Ryosuke (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
MATSUBARA, Masato (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2018/016458
Publication Date:
October 31, 2019
Filing Date:
April 23, 2018
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
H02M7/48; H01S3/00; H01S3/134
Foreign References:
JPH0870581A1996-03-12
JP2003125586A2003-04-25
JPH01134398U1989-09-13
JP2008005575A2008-01-10
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
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