Back to results
US 2025/0096596 A1Published application
Power supply apparatus
AssigneeTMEIC Corporation
InventorsNobuyuki MOMOCHI, Haruyoshi MORI
Life of this patent
Estimating the term…
Abstract
A controller of this uninterruptible power supply apparatus performs, while an inverter power feeding mode is being performed, a test mode in which a bypass circuit is brought into conduction and an output current from an inverter is decreased, and it is determined whether or not the bypass circuit operates normally based on an output voltage from the inverter. Therefore, when the bypass circuit does not operate normally, the bypass circuit can be repaired or replaced, to prevent operation of a load from being stopped when a fault occurs in the inverter.
Claims6
A power supply apparatus comprising:
- an inverter that converts DC power supplied from a DC power supply into AC power;
- a bypass circuit connected between an AC power supply and a load;
- and
- a controller that controls the inverter and the bypass circuit, wherein
- when the inverter operates normally, the controller performs a first power feeding mode of bringing the bypass circuit out of conduction, and supplying AC power from the inverter to the load,
- when the inverter does not operate normally, the controller performs a second power feeding mode of bringing the bypass circuit into conduction, and stopping operation of the inverter, and
- while the first power feeding mode is being performed, the controller performs a third power feeding mode of bringing the bypass circuit into conduction, and determining whether or not the bypass circuit operates normally based on output voltage from the inverter.
4 more elements
Dependencies are inferred from the claim text.