ELECTRICAL POWER-SUPPLYING DEVICE AND METHOD FOR SUPPLYING ELECTRICAL POWER

摘要

The present invention is an electrical power-supplying device in which the possibility that momentary power failure will occur is reduced. This electrical power-supplying device is provided with an electrical storage module (6), a DC-AC inverter (4) for converting the output of the electrical storage module (6) into alternating current electrical power, a bypass circuit for directly transmitting the alternating current electrical power, and a controller for switching between an electrical discharge mode for supplying the output of the DC-AC inverter (4) to a load and a bypass mode for outputting the output of the bypass circuit to the load. In addition, a threshold value for switching between the electrical discharge mode and the bypass mode is set to a range with which it is possible to produce an output when the electrical storage module is electrically overloaded.