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Patent Searching and Data


Title:
POWER SUPPLY DEVICE AND POWER SUPPLY METHOD
Document Type and Number:
Japanese Patent JP2014187833
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To supply electric power to a load without interruption using a DC power supply that is large in voltage fluctuation range.SOLUTION: A power supply device 100 comprises: a generation part 101; a DC power supply 103; a switch 104; and an accumulation part 105. The generation part 101 generates a DC voltage from an AC voltage and outputs the DC voltage to a load 300. Also, the generation part 101 includes a voltage monitor 102 that measures the DC voltage outputted from the generation part 101. The DC power supply 103 outputs a DC voltage that is higher than the DC voltage outputted from the generation part 101. The switch 104 closes an electric path from the DC power supply 103 to the load 300 when a value of the DC voltage measured by the voltage monitor 102 is smaller than a threshold value. The accumulation part 105 accumulates electric power supplied from the generation part 101 and the DC power supply 103 and, when the switch 104 closes the electric path, outputs a DC voltage to the load 300 using the accumulated electric power until the DC voltage from the DC power supply 103 is outputted to the load 300.

Inventors:
TSUTSUI YUKIE
Application Number:
JP2013061792A
Publication Date:
October 02, 2014
Filing Date:
March 25, 2013
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H02J7/34; H01M10/44; H01M10/48
Attorney, Agent or Firm:
Mitsuru Kimura
Koji Yashima
Mie Hideki
Naoki Yamaguchi