Power supply device and method that determine location of fault in first and second power supply systems
Number of patents in Portfolio can not be more than 2000
United States of America
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Oct 8, 2024
Grant Date -
Sep 29, 2022
app pub date -
Sep 28, 2021
filing date -
Sep 28, 2021
priority date (Note) -
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Abstract
A power supply device includes: a first system; a second system; an inter-system switch configured to be able to connect and disconnect between the first system and the second system; a determining unit configured to keep the inter-system switch in an ON state in a normal time, and turn off the inter-system switch and determine which system a ground fault has occurred in, if detecting a ground fault of the first system or the second system; and a suppression circuit configured to suppress an electric discharge of the second power supply and supply electric power for ground fault detection to the second system, and the determining unit determines whether any ground fault has occurred in the second system or not, based on the electric power which is supplied from the suppression circuit to the second system.
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