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|1. (WO2018138710) DC POWER SUPPLY SYSTEM|
|Applicants:||MURATA MANUFACTURING CO., LTD.
|Title:||DC POWER SUPPLY SYSTEM|
The present invention provides a DC power supply system which does not increase the number of times of charging/discharging of a battery, even when a DC load is connected to a DC bus line. The present invention is provided with: a DC bus line 5 which can be connected to a DC load 6; a power generation device 1 for supplying power to the DC bus line 5; a secondary battery 3 which can supply power to the DC bus line 5; a DC-AC inverter 8 which is connected between the DC bus line 5 and a power system 10, inverts, to an AC output, a DC output supplied from the DC bus line 5, and converts, to a DC output, an AC output supplied from the power system 10; and a control unit 7 which controls power to be supplied to the DC bus line 5 from each of the power generation device 1, the secondary battery 3, and the DC to AC inverter 8, wherein when the power supplied from the power generation device 1 does not satisfy a power supply requirement for the DC load, the control unit 7 controls, in priority to the secondary battery 3, the DC-AC inverter 8 to allow the power system to supply the power to the DC load 6 through the DC bus line 5.