POWER-SAVING LINE INTERACTIVE UNINTERRUPTIBLE POWER SYSTEM
First Claim
1. A power-saving line interactive UPS, comprising:
- a power switch set connected to an AC power input terminal adapted to connect to an AC power supply to determine if the AC power supply supplies power to a load;
a low-frequency transformer having two windings, one winding adapted to connect to the load and adapted to connect to the AC power supply;
a full-bridge switching circuit having two half-bridge switching circuits having serially connected nodes connected to the other winding of the low-frequency transformer;
a main controller connected to the power switch set;
a charge and discharge mode controller connected to the main controller and the full-bridge switching circuit and activating the full-bridge switching circuit to enter a charging mode or a discharging mode in accordance with a charge command or a discharge command from the main controller;
a rechargeable battery connected to the full-bridge switching circuit and performing charging or discharging through the full-bridge switching circuit; and
a high-frequency charging circuit connected between the AC power input terminal and the rechargeable battery and converting the AC power into a DC power to charge the rechargeable battery.
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Accused Products
Abstract
A power-saving line interactive UPS has a power switch set, a low-frequency transformer, a full-bridge circuit, a main controller, a charge and discharge mode controller, a rechargeable battery and a high-frequency charging circuit. The high-frequency circuit is connected between an AC power input terminal and the rechargeable battery to convert the AC power into a DC power and charge the rechargeable battery. Therefore, when the AC power is normally supplied and the power capacity of the rechargeable battery is not full, the high-frequency charging circuit is activated to charge the rechargeable battery without charging the rechargeable battery through the low-frequency transformer and the full-bridge switching circuit, thereby effectively reducing overall power consumption.
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Citations
12 Claims
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1. A power-saving line interactive UPS, comprising:
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a power switch set connected to an AC power input terminal adapted to connect to an AC power supply to determine if the AC power supply supplies power to a load; a low-frequency transformer having two windings, one winding adapted to connect to the load and adapted to connect to the AC power supply; a full-bridge switching circuit having two half-bridge switching circuits having serially connected nodes connected to the other winding of the low-frequency transformer; a main controller connected to the power switch set; a charge and discharge mode controller connected to the main controller and the full-bridge switching circuit and activating the full-bridge switching circuit to enter a charging mode or a discharging mode in accordance with a charge command or a discharge command from the main controller; a rechargeable battery connected to the full-bridge switching circuit and performing charging or discharging through the full-bridge switching circuit; and a high-frequency charging circuit connected between the AC power input terminal and the rechargeable battery and converting the AC power into a DC power to charge the rechargeable battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification