Abstract:
A power determining apparatus is disclosed. The power determining apparatus includes a sensor for sensing a current (22) or voltage (20) supplied from a commercial power source or an uninterrptible power supply (UPS), and a controller (10) for analysing a current or voltage signal sent from the sensor, and determining which one of the commercial power source and the UPS supplies power, based on results of the analysis.
Abstract:
A refrigerator according to an embodiment of the present invention includes a power input part through which power is input from a UPS device connected to a commercial power source and an auxiliary power source; a voltage sensor configured to sense a voltage of the power input through the power input part; and a control part configured to analyze a voltage signal sensed by the voltage sensor and to determine whether the input power is commercial power or auxiliary power.
Abstract:
Provided are a refrigerator and a method for controlling the refrigerator. The disclosed refrigerator and the method for controlling the refrigerator are applied to the refrigerator including a compressor using refrigerant as lubricant for a piston and enable accurately determining an end time point of a refrigerant recovery operation based on a driving input value of the compressor. Therefore, abrasion of the piston may be reduced and unnecessary power consumption may be reduced.
Abstract:
The present disclosure provides an inverter module capable of driving two linear compressors through three upper arm elements and three lower arm elements. To this end, an inverter module according to an embodiment may include an inverter module including a first inverter unit including a first upper arm and a first lower arm; a second inverter unit including a second upper arm, a second lower arm, a third upper arm and a third lower arm; and a controller configured to control the switching operation of the first upper arm and the first lower arm to allow the first inverter unit to drive a first compressor in a half-bridge configuration, and control the switching operation of the second upper arm, the second lower arm, the third upper arm and the third lower arm to allow the second inverter unit to drive a second compressor in a full-bridge configuration during a first operation mode, and control the switching operation of the first upper arm, the first lower arm, the second upper arm, the second lower arm, the third upper arm and the third lower arm to allow the first inverter unit and the second inverter unit to drive the first compressor and the second compressor in a full-bridge configuration during a second operation mode.