The Japan Research Institute, Limited

The Japan Research Insitute, Limited

Hitoshi Ikuma

Makoto Inoue

A power supply system for supplying power to a plurality of loads includes a plurality of fuel cells for generating and supplying power to be supplied to the respectively corresponding loads, wherein the fuel cells are provided to correspond to the plurality of loads, a power network for receiving surplus power, which is generated 'by the fuel cells except power to be supplied to the loads corresponding to the fuel cells, and supplying the surplus power to the loads short of power, wherein the power network is coupled to the plurality of fuel cells, and a control unit for stopping power generation of a first fuel cell among the fuel cells corresponding to a first load among the loads and controlling a second fuel cell among the fuel cells to generate power to be supplied to the first load as the surplus power if an amount of power to be supplied to the first load is less than a predetermined first threshold.

Power supply system, multiple dwelling, and computer program

There is provided a power supply system for supplying power to a plurality of loads includes: a fuel cell for generating DC power; a plurality of connection units, wherein one of the plurality of connection units receives information to decide power consumption of the load from the load when any of the plurality of loads is connected to any of the connection units; and a control unit operable to compute the power consumption of the load based on the information received by the connection unit when power supply is requested from another load among the plurality of loads connected to the connection unit, and operable to inform a user of power shortage without supplying power to the load when the power consumption of the load is higher than surplus power of the fuel cell, in a state where power is supplied to at least one of the plurality of loads.

Power supply system and fuel cell unit

A power supply system for supplying power to a plurality of loads includes a plurality of fuel cells for generating and supplying power to be supplied to the respectively corresponding loads, wherein the fuel cells are provided to correspond to the plurality of loads, a power network for receiving surplus power, which is generated by the fuel cells except power to be supplied to the loads corresponding to the fuel cells, and supplying the surplus power to the loads short of power, wherein the power network is coupled to the plurality of fuel cells, and a control unit for stopping power generation of a first fuel cell among the fuel cells corresponding to a first load among the loads and controlling a second fuel cell among the fuel cells to generate power to be supplied to the first load as the surplus power if an amount of power to be supplied to the first load is less than a predetermined first threshold.

To provide a power supply system that allows the current maximum power generation capability to be easily recognized, this power supply system includes a plurality of fuel cells for generating power and supplying the power to loads; a performance storage section for storing a maximum power value indicating a maximum value of a power generation ability of each fuel cell; a test device for sequentially performing maximum power generation testing on at least one of the fuel cells at a predetermined time interval; an update section for updating the maximum power value of each fuel cell, the maximum power value being stored on the performance storage section, according to a result of the performance test; a power-generation-amount detection section for detecting the total of amounts of power generated and supplied by the fuel cells to the loads; and a surplus-power determination section for determining surplus power, which can be excessively generated by the power supply system, at the predetermined time interval based on a difference between the total of the maximum power values stored on the performance storage section and the total of amounts of the power generated.

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Tokyo, Japan

Hitoshi Ikuma