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US 2017/0373333 A1Published application
Fuel cell system
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsRyo KAJIURA, Kenji UMAYAHARA
Life of this patent
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Abstract
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 Tr12 is obtained through the use of the obtained rotational speed predicted value Np and an ACP permissible power level line L1.
Claims4
A fuel cell system comprising:
- a fuel cell;
- a battery;
- an inverter to which the fuel cell and the battery are connected in parallel;
- an air compressor that is connected to the inverter;
- and
- a control unit that controls driving of the air compressor by a current command value supplied to the inverter, wherein
- the control unit is equipped with a first control unit that controls driving of the air compressor, and a second control unit that controls an electric power of the system, the first control unit obtains a rotational speed of the air compressor based on a signal supplied from the inverter, transmits the rotational speed to the second control unit, and controls the current command value supplied to the inverter based on a command torque transmitted from the second control unit, and
- the second control unit receives the rotational speed from the first control unit, receives a rotational speed command value of the air compressor corresponding to an output requirement of the fuel cell from a device outside the second control unit, obtains a rotational speed predicted value based on the received rotational speed command value, derives a limit torque of the air compressor from the obtained rotational speed predicted value, generates the command torque of the air compressor within a range of the derived limit torque, and transmits the generated command torque to the first control unit.
5 more elements
Dependencies are inferred from the claim text.