Title:
DIRECT-CURRENT POWER SUPPLY DEVICE, MOTOR DRIVE DEVICE, AIR BLOWER, COMPRESSOR, AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2021/038867
Kind Code:
A1
Abstract:
This direct-current power supply device (50) is provided with: a reactor (2); a converter (3) which is connected to an alternating-current power supply (1) via the reactor (2); a short circuit (330) that has a short-circuiting switching element (331), that is connected between input terminals of the converter (3), and that short-circuits power supply voltage via the reactor (2); a smoothing capacitor (4) which is connected between output terminals of the converter (3); and a control unit (10) which controls the operation of the converter (3) on the basis of bus voltage and the power supply voltage. Further, the control unit (10) has a plurality of operational modes in which the converter (3) is caused to operate in different modes through combinations of conduction of switching elements (Q1-Q4) and conduction of the short-circuiting switching element (331).
Inventors:
HATAKEYAMA KAZUNORI (JP)
UEMURA KEISUKE (JP)
UEMURA KEISUKE (JP)
Application Number:
PCT/JP2019/034261
Publication Date:
March 04, 2021
Filing Date:
August 30, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02M7/12; H02M7/21
Foreign References:
| JP2015012640A | 2015-01-19 | |||
| JP2017055581A | 2017-03-16 | |||
| JPH10174477A | 1998-06-26 | |||
| JP2003153543A | 2003-05-23 | |||
| JP2018007329A | 2018-01-11 | |||
| JP2016220378A | 2016-12-22 | |||
| JP2017055475A | 2017-03-16 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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