Power supply device

摘要

PROBLEM TO BE SOLVED: To maintain a maximum output operating voltage of a solar cell in which the voltage at which power is extracted from the solar cell can always be maintained at the voltage of the maximum power point without adding a solar cell panel or a switching mechanism of a storage battery. It is an object of the present invention to provide a power supply device capable of supplying power. SOLUTION: A DC input unit 1 from a DC power generation device, a charge / discharge device input / output unit 2 for connecting a DC charging / discharging device, and a maximum power point acquisition for detecting the maximum power point or the vicinity of the maximum power point of the DC power generation device. A power supply device including a unit 4, a power synthesis unit 3 that synthesizes electric power from the DC power generation device and electric power from the DC charging / discharging device, and a power supply unit 5 that supplies electric power to a load. It is characterized by having a conversion unit 6 that enables bidirectional power distribution between the charge / discharge device input / output unit 2 and the power synthesis unit 3 between the charge / discharge device input / output unit 2 and the power synthesis unit 3. And. [Selection diagram] Fig. 1