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Patent Searching and Data


Title:
POWER SUPPLY DEVICE AND MOTOR DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/234943
Kind Code:
A1
Abstract:
According to the present invention, a DC bus power supply (4), which is a power supply device, supplies power to a load capable of switching a state thereof between a driving state in which the load is driven by receiving power and a standby state in which driving is stopped while receiving power. This power supply device comprises: a diode bridge circuit (8) and capacitors (9a, 9b), which form a rectifier circuit capable of rectifying an AC voltage through each rectification method of full-wave rectification and voltage doubling rectification; and a switching unit (11) which switches between the full-wave rectification and the voltage doubling rectification on the basis of a voltage value of an AC voltage and a state of the load.

Inventors:
FUKUDA YUKI (JP)
FUJIMURA TATSUYA (JP)
Application Number:
JP2019/019785
Publication Date:
November 26, 2020
Filing Date:
May 17, 2019
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02M7/06; H02P27/00
Foreign References:
JP2010178594A2010-08-12
JPS6383999U1988-06-01
JP2001145360A2001-05-25
JPH08228487A1996-09-03
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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