| 摘要 |
PURPOSE: A method for protecting components is provided to prevent damage to the components related to the motor control by blocking the excessive counter electromotive force in a regenerative braking process of the fuel cell vehicle. CONSTITUTION: The counter electromotive force is generated when operating the brake for the regenerative braking(S120). The counter electromotive force is charged in a battery or super cap(S130). If the regenerative braking exceeds the limit, a wheel and a motor of the vehicle are separated after the neutral control of a transmission(S150). The motor is decelerated when the deceleration of the motor is needed(S170). The number of rotations of the wheels x the deceleration ratio is compared with the number of rotations of the motor if the brake is not operated. If the number of rotations of the wheels x the deceleration ratio is smaller than the number of rotations of the motor, the motor is decelerated(S200). If the number of rotations of the wheels x the deceleration ratio is greater than the number of rotations of the motor, the motor is accelerated(S220). If the number of rotations of the wheels x the deceleration ratio is equal to the number of rotations of the motor, the gear is returned to a drive(S230).
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