| 摘要 |
Disclosed is an uninterrupted power supply device. The device includes the following: a sensing unit which includes a temperature sensor arranged at a power input terminal to sense the temperature of the power input terminal; a zero-phase harmonic wave filter unit which monitors the main power and measures and filters a zero-phase harmonic wave signal included in the main power; a first switching unit; a second switching unit which applies or blocks the main power to the zero-phase harmonic wave filter unit; and a control unit which, while the first switching unit is controlled to apply the main power, controls the first switching unit to receive auxiliary power from an external battery if the main power is blocked or controls the second switching unit to be shut off to block the main power from the zero-phase harmonic wave filter unit. By doing so, power consumption of the uninterrupted power supply device can be reduced adaptively. |
