Login| Sign Up| Help| Contact|

Patent Searching and Data


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.

Inventors:
Tanaka Shouichi (2-601, Oumorihachiryuu Moriyama-k, Nagoya-shi Aichi 28, 〒4630028, JP)
Application Number:
JP2018/006653
Publication Date:
August 29, 2019
Filing Date:
February 23, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Tanaka Shouichi (2-601, Oumorihachiryuu Moriyama-k, Nagoya-shi Aichi 28, 〒4630028, JP)
International Classes:
B60L11/18
Foreign References:
JP2010178421A2010-08-12
JP2008067432A2008-03-21
JPH0638550A1994-02-10
JP2017118732A2017-06-29
Download PDF: