Patent ID: 9588536
Date: 2017-03-07
CPC Classifications: G05F

Claim:
1. A power supply system comprising: at least one main power supply unit that converts an input power into an output power and supplies the output power to a load; an auxiliary power supply unit that supplies an output power to the load, from a power storage unit capable of functioning as a power supply source; a power measurement unit, that is connected between output sides of the main power supply unit and the auxiliary power supply unit and the load, that measures an output power output by the main power supply unit and the auxiliary power supply unit; and a power supply control unit that calculates an optimal output power of the main power supply unit that maximizes a power conversion efficiency of the main power supply unit in a given output adjustment range for the main power supply unit in accordance with the output power measured by the power measurement unit, calculates an optimal output power or charge power of the auxiliary power supply unit based on the given output adjustment range, controls the main power supply unit based on the calculated optimal output power of the main power supply unit, and controls the auxiliary power supply unit based on the calculated optimal output power or charge power of the auxiliary power supply unit.