Patent ID: 9667101
Date: 2017-05-30
CPC Classifications: H02J,Y02B,Y04S

Claim:
1. A power supply system comprising: a plurality of power supply units that convert an input power into an output power and supply the output power to a load; a power measurement unit, which is connected between an output side of the power supply units and the load, that measures the output power output from the power supply units; and a power supply control unit that calculates an optimal output power realizing a minimum input power to the power supply units in accordance with the output power measured by the power measurement unit, and controls the power supply units based on the calculated optimal output power, wherein the power supply control unit calculates the input power to the power supply units in accordance with the output power measured by the power measurement unit, based on an input-output conversion model expressing power conversion between input power to the power supply units and output power to be output from the power supply units, the power measurement unit measures a sum of output powers of the power supply units to be consumed in the load, the power supply control unit calculates an optimal output power realizing a minimum sum of input powers to the power supply units, based on the sum of the output powers measured by the power measurement unit, and the input-output conversion model with respect to each of the power supply units, and adjusts the output power of each of the power supply units, based on the calculated optimal output power, in a condition that it is assumed that output powers of one or more specific power supply units included in the plurality of power supply units are equal to each other, and output powers of remaining power supply units are equal to each other, and the power supply control unit calculates the optimal output power, for each power supply unit, that realizes the minimum sum of input powers to the power supply units, and adjusts the output power of each of the power supply units, based on the calculated optimal output power.