FUEL CELL SYSTEM
First Claim
1. A fuel cell system comprising:
- a fuel cell that generates electricity using a fuel gas and an oxidizing gas;
a vehicle-driving motor inverter that is supplied with direct-current electric power and supplies alternating-current electric power to a vehicle-driving motor;
an accessory motor inverter that is supplied with direct-current electric power and supplies alternating-current electric power to an accessory motor;
a converter that is provided between the fuel cell and both the vehicle-driving motor and accessory motor, and that boosts output voltage of the fuel cell and supplies the output voltage boosted to the vehicle-driving motor inverter and the accessory motor inverter;
a voltage acquisition device that acquires a required voltage of the accessory motor according to a target accessory motor torque based on an acceleration demand of the accessory motor; and
a converter control device that sets a voltage boost ratio of the converter and controlling the converter by comparing the acquired required voltage of the accessory motor and a required voltage of the vehicle-driving motor.
1 Assignment
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Accused Products
Abstract
A fuel cell system includes a converter for boosting the output voltage of a fuel cell stack and supplies the boosted voltage to a first inverter for a drive motor and a second inverter for an air compressor motor, voltage acquisition means, and converter control means. The voltage acquisition means acquires a required voltage of the air compressor motor according to a target air compressor motor torque based on acceleration demand of the air compressor motor. The converter control means sets the voltage boost ratio of the converter and controls the converter by comparing the required voltage of the air compressor motor and a required voltage of the drive motor.
11 Citations
15 Claims
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1. A fuel cell system comprising:
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a fuel cell that generates electricity using a fuel gas and an oxidizing gas; a vehicle-driving motor inverter that is supplied with direct-current electric power and supplies alternating-current electric power to a vehicle-driving motor; an accessory motor inverter that is supplied with direct-current electric power and supplies alternating-current electric power to an accessory motor; a converter that is provided between the fuel cell and both the vehicle-driving motor and accessory motor, and that boosts output voltage of the fuel cell and supplies the output voltage boosted to the vehicle-driving motor inverter and the accessory motor inverter; a voltage acquisition device that acquires a required voltage of the accessory motor according to a target accessory motor torque based on an acceleration demand of the accessory motor; and a converter control device that sets a voltage boost ratio of the converter and controlling the converter by comparing the acquired required voltage of the accessory motor and a required voltage of the vehicle-driving motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification