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US 2017/0288578 A1Published application
Power supply apparatus
AssigneeToshiba Carrier Corporation
InventorsMasaki Kanamori, Keiichi Ishida, Yohei Kubota, Kenta Yamamoto
Life of this patent
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Abstract
According to one embodiment, the controller configured to, when an operation of the boosting circuit is in the boosting mode, and if an instantaneous value Ia of a current flowing through the reactor lowers to a value smaller than or equal to a set value Ias, switch the operation of the boosting circuit from the boosting mode to the non-boosting mode.
Claims13
A power supply apparatus comprising:
- a rectifier circuit configured to rectify an AC voltage;
- a boosting circuit including a series circuit constituted of a reactor and a first switch element and connected to output ends of the rectifier circuit, a first diode connected in reversely parallel with the first switch element, a second diode for backflow prevention arranged in a current path between the first switch element and a load, a second switch element connected in parallel with the second diode, and a capacitor connected in parallel with the load, and possessing a function of a boosting mode in which an output voltage of the rectifier circuit is boosted, and a function of a non-boosting mode in which the output voltage of the rectifier circuit is output without being boosted;
- and
- a controller configured to, when an operation of the boosting circuit is in the boosting mode, and if an instantaneous value Ia of a current flowing through the reactor lowers to a value smaller than or equal to a set value Ias, switch the operation of the boosting circuit from the boosting mode to the non-boosting mode.
1 more element
A power supply apparatus comprising:
- a rectifier circuit configured to rectify an AC voltage;
- a boosting circuit including a series circuit constituted of a reactor and a first switch element and connected to output ends of the rectifier circuit, a first diode connected in reversely parallel with the first switch element, a second diode for backflow prevention arranged in a current path between the first switch element and a load, a second switch element connected in parallel with the second diode, and a capacitor connected in parallel with the load, and which boosts an output voltage of the rectifier circuit;
- a capacitor for surge voltage absorption connected to the output ends of the rectifier circuit;
- and
- a resistor insertion-arranged in a current path between the output end of the rectifier circuit and the capacitor for surge voltage absorption.
2 more elements
Dependencies are inferred from the claim text.