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Patent Searching and Data


Title:
POWER SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/105135
Kind Code:
A1
Abstract:
In this power supply device, a switch circuit (11) includes n (n ≧ 2) switching elements (SW) connected in series between an input node (N1) and an output node (N2). If an abnormality of at least one of an AC power supply (1) and the switch circuit (11) is detected in a state in which conduction commands to the n switching elements (SW) are output, a control device (20) controls a power converter (12) to convert the DC power of a power storage device (3) to an AC power synchronized with the AC power supplied from the AC power supply (1) during normal time and supplies the converted AC power to the output node (N2). The control device (20) further generates interruption commands for interrupting the n switching elements (SW) while the power converter (12) is performing power conversion, and detects, during the generation of the interruption commands, an abnormality of the interruption of the switch circuit (11) on the basis of the inter-terminal voltages of the n switching elements (SW).

Inventors:
ZHANG XIAOCHEN (JP)
NAKANO TOSHIHIDE (JP)
Application Number:
PCT/JP2018/042963
Publication Date:
May 28, 2020
Filing Date:
November 21, 2018
Export Citation:
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Assignee:
TOSHIBA MITSUBISHI ELEC IND (JP)
International Classes:
H02M1/00; H02J9/06; H03K17/00
Foreign References:
JPS6219047U1987-02-04
JPH06104712A1994-04-15
JPH0536332A1993-02-12
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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