Toyota Jidosha Kabushiki Kaisha

Kenji Umayahara

Michio Yoshida

Mitsuhiro Nada

Yuji Kakeno

Atsushi Imai

Yasuo Matsubara

Takeshi Maenaka

Takuya Nakagami

Shigeyuki Suzuki

Tomohiro Ogawa

Takao Watanabe

Yutaka Tano

Yusuke Nishida

Takao Ozawa

Hideshi Mizutani

Shigeki Takaiwa

Masahiro Yamakawa

Tomoya Ogawa

Keigo Suematsu

Tadaichi Matsumoto

Hiroaki Mori

Akihiro Kamiya

Takahiro Umehara

Kohei Oda

Shuji Hirakata

Shimpei Miura

Ryota Kawaguchi

Kota Manabe

Yoshiaki Naganuma

Masashi Toida

Tomotaka Ishikawa

Tetsuya Bono

Naohiro Yoshida

Tomio Yamanaka

Yasunobu Jufuku

Kenji Kurita

Hideaki Mizuno

Tatsuaki Yokoyama

Minobu Mizuno

Fusaki Igarashi

Ryoichi Nanba

Nobuhiro Tomosada

Motohiko Taniyama

Tomoyuki Nishida

Masahiko Hasegawa

Yuji Murata

Tornio Yamanaka

Ryo Kajiura

Shota Okada

A fuel cell system configured to supply electric power to load includes: a fuel cell; and a control unit configured to set target electric power to be generated by the fuel cell and control electric power generation by the fuel cell such that the fuel cell generates the target electric power. The control unit is configured to, when setting the target electric power using request electric power that the load requests the fuel cell to generate, execute a fluctuation suppression process for making a fluctuation of the target electric power smaller than a fluctuation of the request electric power.

Fuel cell system

A hydrogen supply system comprises a hydrogen station placed near a railroad track and configured to supply hydrogen to a moving body that is driven with a fuel cell used as an electric power source; and a train provided with a hydrogen tank and configured to run along the railroad track and transport hydrogen to the hydrogen station.

Hydrogen supply system, train and hydrogen supply method

A fuel cell vehicle includes a fuel cell, a hydrogen tank, a driving motor, a power feeder and a controller. The controller is configured to: obtain current location information of the fuel cell vehicle, hydrogen supply position information, a fuel consumption of the fuel cell vehicle in a drive mode, a remaining amount of hydrogen stored in the hydrogen tank, and a consumed amount of hydrogen per unit time in a power feed mode; calculate an amount of hydrogen that is required for the fuel cell vehicle to drive from the current location to the supply position; calculate a power feedable time period when the fuel cell vehicle is operable in the power feed mode without causing the remaining amount of hydrogen to become less than the required amount of hydrogen, and display information with regard to the power feedable period.

Fuel cell vehicle and method using fuel cell vehicle

An electric power system includes a secondary battery configured to supply electric power to a drive motor, configured to generate driving force of a vehicle, and an auxiliary having an auxiliary smoothing capacitor, a secondary battery relay configured to open or close an electrical contact between the secondary battery and the drive motor, a secondary battery smoothing capacitor connected between the secondary battery relay and the drive motor, an auxiliary relay configured to open or close an electrical contact between the secondary battery and the auxiliary, and a control unit configured to control a switching operation of each of the secondary battery relay and the auxiliary relay. The control unit is configured to, at startup of the vehicle, precharge the secondary battery smoothing capacitor by closing the secondary battery relay and then precharge the auxiliary smoothing capacitor by closing the auxiliary relay.

Electric power system and control method therefor

A voltage control system includes: a converter controlling portion; a current value acquisition portion; and a voltage value acquisition portion. The converter controlling portion sets a duty ratio in a present cycle by adding an addition term to a feedforward term, the addition term being determined by use of a current deviation, which is a difference between a target value of an output current in the present cycle and a current measured value in a previous cycle, and the duty ratio in the previous cycle, the addition term being corresponding to an increase of the output current in the present cycle.

Voltage control system with addition term and fuel cell system

A fuel cell system is equipped with a plurality of subsystems. Each of the plurality of the subsystems is equipped with a fuel cell stack, a temperature sensor, a scavenging device, and a control unit. The control unit of that one of the subsystems having the fuel cell stack whose temperature is specified as being the lowest among the plurality of the subsystems when the fuel cell system is stopped from operating performs scavenging control including a determination on the carrying out of scavenging in the subsystem and the issuance of a command to carry out scavenging to all the subsystems in accordance with the determination.

Fuel cell system and control method

An energy generation system using biomass includes a first information generation unit that generates the first information indicating that a distributor handling food has disposed of food waste biomass, an energy generation device that generates energy and the like using biomass collected from the distributor, a second information generation unit that generates the second information indicating that energy and the like have been generated using biomass collected from the distributor, a third information generation unit that obtains the first information and the second information and generates the third information indicating generation of at least one of energy and energy sources by collecting biomass disposed by the distributor, and a display unit that displays the third information generated by the third information generation unit.

Energy generation system using biomass and method of controlling the same

A fuel cell system includes: a fuel cell in which a plurality of cells are stacked; a voltage sensor configured to measure a cell voltage of the fuel cell; and a pressure sensor configured to measure an anode gas pressure in the fuel cell. When the cell voltage is lower than a predetermined threshold voltage, in a state in which an amount of supply of cathode gas to the fuel cell is secured, and a rate of decrease in the anode gas pressure is larger than a predetermined threshold rate, it is determined that a cross leak abnormality has occurred in the fuel cell.

Fuel cell system and method of controlling fuel cell

When the fuel cell stack is operated in a state in which the air stoichiometric ratio is smaller than the predetermined value, the controller calculates the amount of retained water that has been retained in the cathode flow path of the fuel battery cell per fixed time in such a way that the calculated amount includes an extra amount therein, integrates the amount of retained water per fixed time that has been calculated in such a way that the calculated amount includes the extra amount therein, and executes air blow in the cathode flow path of the fuel battery cell when the integrated value of the amount of retained water becomes equal to or larger than the threshold.

Fuel cell system and method of controlling the same

A voltage control system includes a converter device, and a controller configured to set a duty ratio according to a current target value so as to cause the converter device to repeatedly perform a boost operation according to the duty ratio. The controller is configured to set the duty ratio by use of a basic term including a feedforward term, and an additional term, the feedforward term being derived by use of a measured value of a magnitude of an input of a reactor provided in the converter device and a measured value of a magnitude of an output of the reactor or by use of respective target values of the magnitude of the input and the magnitude of the output in the reactor, the additional term being derived by use of the variation of the current target value during one cycle.

Voltage control system, fuel cell system, and control method for voltage control system

An MG-ECU obtains a rotational speed Na of an ACP. The MG-ECU transmits the obtained rotational speed (a PM reception rotational speed) Na of the ACP to a PM-ECU through communication. The PM-ECU obtains a rotational speed predicted value Np by adding a rotational speed change width Cvw to the PM reception rotational speed Na received from the delayed MG-ECU. A limit torque Tris obtained through the use of the obtained rotational speed predicted value Np and an ACP permissible power level line L

There is provided a fuel cell system. When receiving an instruction to start power generation of the fuel cell system, the fuel cell system is configured: (i) to obtain an output limit value of a secondary battery according to a predetermined relationship of a temperature of the secondary battery to the output limit value of the secondary battery by using the temperature of the secondary battery; (ii) to control a battery converter such as to increase a voltage of a smoothing capacitor for boosting included in the battery converter to a start-time target voltage that is higher than an open circuit voltage of a fuel cell, such that an output power of the secondary battery does not exceed the output limit value; and (iii) to operate the compressor such as to start supplying the cathode gas by the cathode gas supply system and to open the main stop valve such as to start supplying the anode gas by the anode gas supply system.

Fuel cell system and control method of the same

A vehicle capable of regenerative braking includes a motor that is configured to be driven with electric power. The vehicle selectively sets a drive mode of the vehicle in an accelerator-off state between an ordinary mode and a deceleration enhanced mode that decelerates the vehicle with higher deceleration force than deceleration force in the ordinary mode. The vehicle performs regenerative control of the motor in the ordinary mode or performs deceleration control of generating the deceleration force in the deceleration enhanced mode, in order to decelerate the vehicle in the set drive mode. When an accelerator stroke based on a driver's depression of an accelerator becomes higher than a cancellation threshold in the drive mode set to the deceleration enhanced mode, the cancellation threshold being determined in advance corresponding to the accelerator stroke being greater than zero, the vehicle changes the drive mode from the deceleration enhanced mode to the ordinary mode.

Vehicle capable of regenerative braking, and control method of a vehicle capable of regenerative braking

On a start of a fuel cell system, (i) when the temperature of a high-voltage secondary battery obtained from a temperature sensor is higher than a predetermined reference value, a controller of the fuel cell system is configured to set an output voltage on a step-down side of a DC-DC converter to a higher voltage than a voltage of a low-voltage secondary battery and subsequently start an FC auxiliary machine using electric power from the high-voltage secondary battery. (ii) When the temperature of the high-voltage secondary battery obtained from the temperature sensor is equal to or lower than the predetermined reference value, on the other hand, the controller of the fuel cell system is configured to set the output voltage on the step-down side of the DC-DC converter to a lower voltage than the voltage of the low-voltage secondary battery and subsequently start the FC auxiliary machine using the electric power from the high-voltage secondary battery.

A fuel cell system is equipped with a fuel cell and a secondary battery. This fuel cell system is equipped with a recordation unit that records a charge-discharge history of the secondary battery, a prediction unit that predicts restriction on an output of the secondary battery based on the charge-discharge history recorded by the recordation unit, and an output control unit that starts power generation by the fuel cell prior to a timing of restriction on the output of the secondary battery, when the prediction unit predicts restriction on the output of the secondary battery and the fuel cell is in an intermittent operation state.

Fuel cell system and control method for the same

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Miyoshi, Japan

Kenji Umayahara