DC POWER SYSTEM, DC POWER SUPPLY APPARATUS, DC APPARATUS, POWER SUPPLY METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To recognize and supply required voltage of a DC apparatus with a simple structure.SOLUTION: A DC power supply apparatus includes: a derived voltage search section for searching for derived voltage defined for deriving voltage required for driving a DC apparatus by instructing a power conversion section which can output DC power by changing voltage to be output to supply the DC power to the DC apparatus while changing voltage in accordance with a predetermined method; a required voltage derivation section for deriving the required voltage from the derived voltage specified by the derived voltage search section; and a required voltage designation section for instructing the power conversion section to supply the DC power of the required voltage derived by the required voltage derivation section to the DC apparatus. The DC apparatus includes a derived voltage cut section for allowing the voltage of the DC power supplied from the DC power supply apparatus up to the derived voltage or less, and cutting input of the DC power when the voltage of the DC power exceeds the derived voltage. This technology can be applied to a DC power system which supplies DC power through a DC bus.