Uninterruptible power supply apparatus
AssigneeDelta Electronics, Inc.
InventorsChung-Chieh CHENG, Yung-Sheng YAN
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Abstract
An uninterruptible power supply apparatus includes a switch, a first inductor, a direct current controlling unit, a first bridge arm, a second bridge arm and a third bridge arm. When the switch switches the first inductor coupled to an alternative current (AC) power, the AC power converts into a bus voltage via the first inductor, the first bridge arm and the second bridge arm, and converts into an output power via the second bridge arm and the third bridge arm. When the switch switches the first inductor coupled to a DC power, the DC power converts into the bus voltage via the DC controlling unit and the first inductor, and converts into the output power via the second bridge arm and the third bridge arm.
Claims16
An uninterruptible power supply apparatus, comprising:
- a switch coupled to an alternative current (AC) power;
- a first inductor coupled to the switch;
- a direct current (DC) controlling unit coupled to a DC power and the switch;
- a first bridge arm coupled to the first inductor;
- a second bridge arm connected in parallel with the first bridge arm;
- a bus capacitor connected in parallel with the second bridge arm;
- and
- a third bridge arm connected in parallel with the third bridge arm,
- wherein the AC power is converted to a bus voltage across the bus capacitor through the first inductor, the first bridge arm and the second bridge arm, and converted to an output power through the second bridge arm and the third bridge arm when the switch is switched to connect the first inductor to the AC power;
- the DC power is converted to the bus voltage through the DC controlling unit and the first inductor, and then converted to the output power through the second bridge arm and the third bridge arm when the switch is switched to connect the first inductor to the DC controlling unit.
An uninterruptible power supply apparatus, comprising:
- a direct current (DC) controlling unit coupled to an alternative current (AC) power and a DC power;
- a first inductor coupled to the DC controlling unit;
- a first bridge arm coupled to the first inductor;
- a second bridge arm connected in parallel with the first bridge arm;
- a bus capacitor connected in parallel with the second bridge arm;
- and
- a third bridge arm connected in parallel with the third bridge arm,
- wherein the AC power is converted to a bus voltage across the bus capacitor through the first inductor, the first bridge arm and the second bridge arm and then converted to an output power through the second bridge arm and the third bridge arm when first inductor is controlled to couple to the AC power by the DC controlling unit;
- the DC power is converted to the bus voltage through the first inductor and the first bridge arm, and then converted to the output power through the second bridge arm and the third bridge arm when the first inductor is controlled to couple to the DC power by the DC controlling unit.
Dependencies are inferred from the claim text.