Abstract: A power supply system including a charge amount recognizing section that recognizes a charge amount of a battery mounted on a movable body, wherein when the movable body is in a state where power supply from the battery to a charge and discharge apparatus is possible, a power supply target is determined based on the charge amount of the battery and a current time, the power supply target being to undergo power supply from the battery.

Abstract: A power trading system includes an order reception unit configured to receive a sell order and a purchase order of power, and a power supply and demand planning unit configured to plan power supply and demand between a first contractor and a second contractor. When a total value of a power transmission and distribution distance between a third contractor who sells power and the second contractor and a power transmission and distribution distance between a fourth contractor who purchases power and the first contractor is shorter than a power transmission and distribution distance between the first contractor and the second contractor, the power supply and demand planning unit plans the power supply and demand including power supply from the third contractor to the second contractor and power supply from the first contractor to the fourth contractor.

Abstract: A battery management system includes: a battery-capacity dividing unit that virtually divides a chargeable capacity of a battery mounted on a mobile object into a first region and a second region to enable a first user to use the first region in the battery and a second user to use the second region in the battery; an amount-of-deterioration-decrease estimation unit that estimates the amount of deterioration decrease that is the amount of decrease in the chargeable capacity of the battery due to deterioration; and an allocation-capacity adjustment unit that, in a case in which the amount of deterioration decrease is lower than or equal to a first specified amount, reduces a chargeable capacity of the second region by the amount of deterioration decrease.

Abstract: A method for controlling a fuel cell vehicle includes: calculating total system power for the fuel cell vehicle; calculating power accumulation device target power; calculating fuel cell target power, the power accumulation device target power and the fuel cell target power satisfying the total system power; controlling a first converter to regulate power of a power accumulation device based on the power accumulation device target power, the first converter being provided between the power accumulation device and a motor driver, the motor driver being to drive a motor to generate travelling power; and controlling a second converter to regulate power generated by the fuel cell based on the fuel cell target power, the second converter being provided between the fuel cell and the motor driver.

Abstract: An electric power system includes an electric power generator, a first converter, an electric energy storage device, and a first converter controller. The first converter controller is to correct a target output of the electric power generator based on a charging margin so as to control an output of the electric power generator via the first converter so that an input electric power to the electric energy storage device does not exceed an input electric power threshold of the electric energy storage device or to correct the target output of the electric power generator based on a discharging margin so as to control the output of the electric power generator via the first converter so that an output electric power from the electric energy storage device does not exceed an output electric power threshold of the electric energy storage device.

Abstract: A switch is to switch a connection mode between a serial mode and a parallel mode. In the serial mode, a fuel cell and a power storage device are connected in series and connected to a travelling apparatus in parallel. In the parallel mode, the fuel cell is connected to the travelling apparatus in parallel. A converter is to be turned on to boost a voltage generated by the fuel cell to be applied to the travelling apparatus and to be turned off when the parallel mode is selected. A controller is to control the switch to switch a connection mode to the parallel mode when power to be consumed by the travelling apparatus is lower than a first power threshold, and to switch the connection mode to the serial mode when the power to be consumed by the travelling apparatus is higher than the first power threshold.

Abstract: A power management device of a power system manages the power generation quantity of the whole power system. A power generation control device controls a power generation device using a power generation command value (Ifccon1req) of the power generation device, said power generation command value having been acquired from the power management device via a first signal system, and a parameter (Ibat) that is directly acquired from a parameter acquisition unit via a second signal system.

Abstract: A power management device of a power system manages the power generation quantity of the whole power system. A power generation control device controls a power generation device using a power generation command value (Ifccon1req) of the power generation device, said power generation command value having been acquired from the power management device via a first signal system, and a parameter (Ibat) that is directly acquired from a parameter acquisition unit via a second signal system.

Abstract: A switch is to switch a connection mode between a serial mode and a parallel mode. In the serial mode, a fuel cell and a power storage device are connected in series and connected to a travelling apparatus in parallel. In the parallel mode, the fuel cell is connected to the travelling apparatus in parallel. A converter is to be turned on to boost a voltage generated by the fuel cell to be applied to the travelling apparatus and to be turned off when the parallel mode is selected. A controller is to control the switch to switch a connection mode to the parallel mode when power to be consumed by the travelling apparatus is lower than a first power threshold, and to switch the connection mode to the serial mode when the power to be consumed by the travelling apparatus is higher than the first power threshold.

Abstract: A method for controlling a fuel cell vehicle includes: calculating total system power for the fuel cell vehicle; calculating power accumulation device target power; calculating fuel cell target power, the power accumulation device target power and the fuel cell target power satisfying the total system power; controlling a first converter to regulate power of a power accumulation device based on the power accumulation device target power, the first converter being provided between the power accumulation device and a motor driver, the motor driver being to drive a motor to generate travelling power; and controlling a second converter to regulate power generated by the fuel cell based on the fuel cell target power, the second converter being provided between the fuel cell and the motor driver.

Abstract: A fuel cell system includes a fuel cell, a reactant gas supply device, a voltage adjusting device, a load, and a control device. The control device executes a fixed voltage/variable output control where, in a state where an output voltage of the fuel cell is fixed to a voltage value outside of a redox advancing voltage range using the voltage adjusting device, a supply amount of reactant gas supplied from the reactant gas supply device to the fuel cell is changed so as to track a request output of the load. The control device restricts a change rate of the supply amount of the reactant gas supplied from the reactant gas supply device to the fuel cell if there is change in the request output of the load while the fixed voltage/variable output control is being executed.

Abstract: In a case where gas supply controller of an FC system determines that the temperature of an FC is a predetermined temperature or less, the gas supply controller fixes the FC voltage to a voltage value within a voltage region where degradation is relatively small, the voltage value being below a voltage range where an oxidation-reduction proceeds. Further, the amount of a gas supplied to the FC is changed in accordance with electric power required by a load.

Abstract: An electric power system includes an electric power generator, a first converter, an electric energy storage device, and a first converter controller. The first converter controller is to correct a target output of the electric power generator based on a charging margin so as to control an output of the electric power generator via the first converter so that an input electric power to the electric energy storage device does not exceed an input electric power threshold of the electric energy storage device or to correct the target output of the electric power generator based on a discharging margin so as to control the output of the electric power generator via the first converter so that an output electric power from the electric energy storage device does not exceed an output electric power threshold of the electric energy storage device.

Abstract: In a fuel cell system, regeneration-time voltage fixed control is implemented where during regeneration or when regeneration is expected to occur, output voltage of a fuel cell is set to a voltage value outside an oxidation reduction progress voltage range, and the amount of reactant gas supplied to the fuel cell is changed based on the amount of electric power remaining in an energy storage device. In the regeneration-time voltage fixed control, it is determined whether or not regeneration occurs while a moving body equipped with the fuel cell system is moving down a slope, and in the case where it is determined that regeneration occurs while the moving body is moving down a slope, the amount of the reactant gas supplied to the fuel cell is decreased in comparison with the case where it is determined that regeneration occurs while the moving body is not moving down a slope.

Abstract: A fuel cell system is provided that includes a fuel cell stack, an air pump, a first convertor, a motor, and an ECU for controlling the air pump and the first convertor based on the target voltage and the switching voltage of the single cell. The ECU executes the first mode such that the actual voltage of the single cell corresponds to the target voltage, when the target voltage is equal to or less than the switching voltage, while the ECU executes the second mode such that the actual voltage of the single cell is kept at the switching voltage, when the target voltage is more than the switching voltage. Further, the ECU executes the second mode thereby to change the actual current of the single cell.

Abstract: A fuel cell system has different allowable changes per unit time in an operation range of a fuel cell, in both a first output range of the fuel cell and a second output range of the fuel cell, the second output range being lower than the first output range. The allowable change per unit time in the output of the fuel cell in the second output range is smaller than the allowable change per unit time in the output of the fuel cell in the first output range.

Abstract: An electric power supply system can determine a sharing ratio of an electric power so as to increase and decrease an output electric power supplied by an electric power generator in accordance with an output electric power value required for the electric power supply system, in a fuel cell following region where a frequency of a magnitude of the electric power is equal to or higher than a predetermined value in a frequency distribution of a magnitude of the electric power, and can determine the sharing ratio of the electric power so as to increase an output electric power supplied by an electricity storage device, in an assist region where the frequency is lower than a predetermined value in the frequency distribution, and can prevent an excess of discharging from an electricity storage device.

Abstract: A fuel cell system and a fuel cell vehicle equipped with the fuel cell system are provided. In a case where the voltage of a battery is outside a voltage range of fuel cells where oxidation-reduction proceeds, an ECU controls a DC/DC converter to be placed in a direct connection state (Vbat?Vfc), and controls a gas supply unit so as to regulate concentration of oxygen or hydrogen supplied to the fuel cells in accordance with a target power generation electric power determined based on electric power required by a load.

Abstract: A fuel cell vehicle is provided. At the time of regeneration of electric power by a motor, an ECU places a DC/DC converter in a direct connection state under control, and stores electric power in a battery while decreasing oxygen concentration or hydrogen concentration by a gas supply unit to decrease electric power generated by a fuel cell.

Abstract: A fuel cell vehicle is controlled by performing a rate limiting control process for reducing electric power generated by a fuel cell to reduce a frequency at which a voltage generated by the fuel cell is equal to or higher than a predetermined voltage when electric power requested by a load is lowered, and changing a rotational speed of an air pump depending on the electric power requested by the load when the electric power generated by the fuel cell is reduced.