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Title:
VOLTAGE SWITCHING-TYPE DC POWER SUPPLY
Document Type and Number:
WIPO Patent Application WO/2019/163080
Kind Code:
A1
Abstract:
Provided is a voltage switching-type DC power supply with which it is possible to reduce loss. The DC power supply has a connection switching circuit capable of selecting a series connection or a parallel connection of two or four batteries. The DC power supply applies a DC link voltage having two levels or three levels to an inverter for driving a variable speed motor. In the connection switching circuit, a series transistor is switched, whereby the connection switching circuit operates as a step-down chopper. If any of the batteries has failed, the series transistor is turned off.

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Inventors:
TANAKA SHOUICHI (JP)
Application Number:
PCT/JP2018/006653
Publication Date:
August 29, 2019
Filing Date:
February 23, 2018
Export Citation:
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Assignee:
TANAKA SHOUICHI (JP)
International Classes:
B60L11/18
Foreign References:
JP2010178421A2010-08-12
JP2008067432A2008-03-21
JPH0638550A1994-02-10
JP2017118732A2017-06-29
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