Title:
POWER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2018170816
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a power supply device which can decrease no-load loss of transformers when a plurality of transformers are connected in parallel with each other to connect to a load.SOLUTION: Transformers 4, 5 are connected in parallel with each other. A primary side of the transformer 4 is connected with a contactor C11, and a secondary side of the transformer 4 is connected with a contactor C12. A primary side of the transformer 5 is connected with a contactor C21, and a secondary side of the transformer 5 is connected with a contactor C22. A controller 10 opens the contactors C21,C22 while closing the contactors C11,C12 to disconnect the transformer 5 when a predictive power amount is below a specified value, and closes the contactors C21,C22 while closing the contactors C11,C12 to connect the transformer 5 when the predictive power amount is above the specified value, thereby executes opening and closing control.SELECTED DRAWING: Figure 1
Inventors:
NIWA KENJI
SUZUKI TATSUYA
KANASUGI HIROYUKI
ITO YASUSHI
SAWADA AKIRA
KUNIYASU TAKANAO
YOSHIDA MASAAKI
SUZUKI TATSUYA
KANASUGI HIROYUKI
ITO YASUSHI
SAWADA AKIRA
KUNIYASU TAKANAO
YOSHIDA MASAAKI
Application Number:
JP2017064201A
Publication Date:
November 01, 2018
Filing Date:
March 29, 2017
Export Citation:
Assignee:
SHIMIZU CONSTRUCTION CO LTD
International Classes:
H02J3/48; H02J3/00
Attorney, Agent or Firm:
Sakai International Patent Office