KR101804774B1 - Fuel cell vehicle and controlling method therefor - Google Patents

Abstract

The disclosed invention relates to a fuel cell vehicle and a control method thereof, and more particularly, to an inverter for driving a motor in accordance with an output from a fuel cell and a high voltage battery; And when the fuel cell is stopped and the fuel cell is restarted, the time from the fuel cell restart timing to the fuel cell power availability timing is estimated, the available torque of the fuel cell running mode is calculated, A fuel cell controller for setting a motor torque command increase rate limit map capable of reaching an available torque of the fuel cell running mode within a time up to the battery power availability point and outputting a motor torque command to the inverter in accordance with the set motor torque command increase rate limit map ; ≪ / RTI >

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a fuel cell vehicle,

The present invention relates to a fuel cell vehicle and a control method thereof.

The fuel cell is a power generation device that converts the chemical energy of fuel into electricity by reacting it electrochemically in the fuel cell stack without converting it into heat by combustion. It supplies power for industrial, household and vehicle driving, It can also be applied to the power supply of electronic products.

As an example of such a fuel cell, a polymer electrolyte membrane fuel cell (PEMFC), which has been most studied as a power source for driving a vehicle, has an electrochemical reaction on both sides of an electrolyte membrane, Membrane Electrode Assembly (MEA) with a catalytic electrode layer, Gas Diffusion Layer (GDL) that acts to distribute the reacted gases evenly and transfer the generated electrical energy, the gas tightness of the reaction gases and the cooling water A gasket and a fastening mechanism for maintaining the proper tightening pressure, and a bipolar plate for moving the reaction gases and the cooling water.

On the other hand, when the vehicle is driven only by the fuel cell, there is a problem that the performance is deteriorated in a low-efficiency operation region of the fuel cell. In addition to the fuel cell that is the main power source, A high-voltage battery or a super capacitor is used as the storage means.

In the above-described fuel cell vehicle, the acceleration state in the vehicle is smooth due to restriction due to the available torque in the fuel cell running mode from when the fuel cell is restarted to the fuel cell restart state until the power availability after the fuel cell restart And the driver is uncomfortable.

The disclosed invention is intended to provide a fuel cell vehicle and a control method thereof that enable a motor torque to rise smoothly until power availability after restarting a fuel cell.

A fuel cell vehicle according to one aspect includes an inverter for driving a motor in accordance with an output from a fuel cell and a high-voltage battery; And when the fuel cell is stopped and the fuel cell is restarted, the time from the fuel cell restart timing to the fuel cell power availability timing is calculated, the available torque of the fuel cell running mode is calculated, A motor torque command increase rate limiting map capable of reaching an available torque of the fuel cell running mode within a period of time from when the fuel cell power is available to the fuel cell power availability point to the inverter And a fuel cell controller for outputting the fuel cell power.

Further, the fuel cell controller calculates a time from the fuel cell restart timing to the fuel cell power availability timing based on the required time map according to the difference between the fuel cell power availability determination air flow rate and the air flow rate at the time of restarting the fuel cell Can be predicted.

In addition, the fuel cell controller can calculate an available torque of the fuel cell running mode based on real time available power information of the high-voltage battery and other consumed power including a current consumption power for restarting the fuel cell.

)를 산출하고, 상기 수학식 1은

이고, 상기

는 전달효율 계수,

는 고전압 배터리의 실시간 가용 파워 정보,

는 연료전지 재 기동을 위한 보기류 소모 파워를 비롯한 기타 소모 파워,

는 모터 회전속도일 수 있다.Further, the fuel cell controller calculates an allowable torque of the fuel cell running mode

), And the equation (1)

, And

The transmission efficiency coefficient,

Real-time available power information of high-voltage batteries,

The power consumption for the fuel cell re-start, other power consumption,

May be the motor rotational speed.

The motor torque command increase rate limiting map may further include a map memory for storing the motor torque command increase rate limiting map in which the time from the fuel cell restart timing to the fuel cell power availability timing and the available torque of the fuel cell running mode are set to predetermined standards, And may be a value set by mapping the increase rate limit value.

The available torque of the fuel cell running mode may be a reference available torque of the predetermined fuel cell running mode.

The available torque of the fuel cell running mode is calculated by multiplying the motor torque command increasing rate determined by the motor torque command increasing rate limit map calculated on the basis of the reference available torque of the predetermined fuel cell running mode by the fuel- It can be an available torque.

In addition, the fuel-cell running mode usable torque ratio may be a value obtained by dividing the present usable torque of the fuel cell running mode by the reference usable torque of the fuel cell running mode.

Also, the fuel cell controller may perform the drive shock reduction filtering processing on the motor torque command before outputting the motor torque command calculated according to the motor torque command increase rate limit map to the inverter.

A method of controlling a fuel cell vehicle according to an aspect includes: a step of restarting the fuel cell by releasing a fuel cell stop; Predicting a time from a fuel cell restart timing to a fuel cell power availability timing; Calculating an available torque of the fuel cell running mode; Determining a motor torque command increase rate limiting map capable of reaching an available torque of the fuel cell running mode within a time from the fuel cell restart timing to the fuel cell power availability timing; And outputting a motor torque command according to the determined motor torque command increase rate limiting map.

Further, in the step of predicting the time until the fuel cell power availability time point, the fuel cell power restarting time point is calculated based on the required time map according to the difference between the fuel cell power availability determination air flow rate and the air flow rate at the time of restarting the fuel cell, The time from when the fuel cell power is available to when the fuel cell power is available.

In the step of calculating the available torque of the fuel cell running mode, the available torque of the fuel cell running mode is calculated based on real time available power information of the high-voltage battery and other consumed powers, Can be calculated.

)를 산출하고, 상기 수학식 1은

이고, 상기

는 전달효율 계수,

는 고전압 배터리의 실시간 가용 파워 정보,

는 연료전지 재 기동을 위한 보기류 소모 파워를 비롯한 기타 소모 파워,

는 모터 회전속도일 수 있다.Further, in the step of calculating the available torque of the fuel cell running mode, an allowable torque of the fuel cell running mode

), And the equation (1)

, And

The transmission efficiency coefficient,

Real-time available power information of high-voltage batteries,

The power consumption for the fuel cell re-start, other power consumption,

May be the motor rotational speed.

The motor torque command increase rate limiting map may further include a map memory for storing the motor torque command increase rate limiting map in which the time from the fuel cell restart timing to the fuel cell power availability timing and the available torque of the fuel cell running mode are set to predetermined standards, And may be a value set by mapping the increase rate limit value.

The available torque of the fuel cell running mode may be a reference available torque of the predetermined fuel cell running mode.

The available torque of the fuel cell running mode is calculated by multiplying the motor torque command increasing rate determined by the motor torque command increasing rate limit map calculated on the basis of the reference available torque of the predetermined fuel cell running mode by the fuel- It can be an available torque.

In addition, the fuel-cell running mode usable torque ratio may be a value obtained by dividing the present usable torque of the fuel cell running mode by the reference usable torque of the fuel cell running mode.

The control method of the fuel cell vehicle may further include a step of outputting the motor torque command to the drive shock before outputting the motor torque command calculated in accordance with the motor torque command increase rate limit map to the inverter after outputting the motor torque command, And performing mitigation filtering processing.

Since the disclosed invention limits the motor torque curve so as to smoothly rise to the available torque in the fuel cell running mode after restarting the fuel cell, it is possible to control the abrupt change point of the motor torque curve, Can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing the configuration of a fuel cell vehicle in detail.
2 is a control block diagram showing the configuration of a fuel cell vehicle.
3 to 6 are diagrams for explaining a method of controlling the motor torque.
7 is a graph showing a change in a motor torque after restarting the fuel cell when the fuel cell is stopped.
8 is a diagram showing a change in motor torque according to the invention disclosed after restarting the fuel cell when the fuel cell is stopped.
9 is a flowchart for explaining a control method of the fuel cell vehicle.

BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages, and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. In this specification, the terms first, second, etc. are used to distinguish one element from another, and the element is not limited by the terms.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing the configuration of a fuel cell vehicle in detail.

1, a fuel cell vehicle 100 includes a motor 110, an inverter 120, a fuel cell 130, a hydrogen supply device 140, an air supply device 150, a high voltage power converter A high voltage battery 160, and a high voltage battery 170.

More specifically, the motor 110 may be driven by adjusting the driving torque and the driving time according to the control of the inverter 120. [

The inverter 120 may be configured to drive the motor 110 in accordance with the output from the fuel cell 130 and the high-voltage battery 170. Specifically, the inverter 120 drives the motor 110 by phase-converting a high voltage of a DC type output from the fuel cell 130 and the high-voltage battery 170 through high-speed switching.

The fuel cell 130 may be configured to produce electrical energy through an electrochemical reaction of the fuel. Specifically, the fuel cell 130 generates electricity through chemical reaction between hydrogen supplied from the hydrogen supply device 140 to the anode and air supplied from the air supply device 150 to the cathode.

The hydrogen supply device 140 may be configured to supply hydrogen to the fuel cell 130.

The air supply device 150 may be configured to supply air to the fuel cell 130.

The high voltage power converter 160 is connected in parallel between the fuel cell 130 and the inverter 120 so that the voltage supplied to the motor 110 can be safely maintained and the voltage between the fuel cell 130 and the high voltage battery 170 And the surplus voltage and the regenerative braking energy of the fuel cell 130 are supplied to the charging voltage at the high voltage battery 170 side.

The high voltage battery 170 may be connected to the high voltage power converter 160 in a configuration capable of charging electric energy.

2 is a control block diagram showing the configuration of a fuel cell vehicle.

3 to 6 for explaining a method of controlling the motor torque, FIG. 7 showing a change in general motor torque after restarting the fuel cell when the fuel cell is stopped, FIG. Will be described with reference to FIG.

Further, detailed description of configurations other than the configurations applied to the disclosed invention overlapping with those described in Fig. 1 will be omitted.

Referring to FIG. 2, the fuel cell vehicle 100 may include a motor 110, an inverter 120, and a fuel cell controller 180.

The inverter 120 may be configured to drive the motor 110 in accordance with the output from the fuel cell (130 in FIG. 1) and the high-voltage battery (170 in FIG. 1).

When the fuel cell 130 is stopped and the fuel cell 130 is restarted, the fuel cell controller 180 predicts the time from the fuel cell restart timing to the fuel cell power availability timing, Calculates a motor torque command increase rate limiting map capable of reaching an available torque in the fuel cell running mode within a time period from the fuel cell restart timing to the fuel cell power availability timing and outputs the calculated motor torque command It is possible to output the motor torque command to the inverter 120 according to the rate limiting map.

More specifically, the fuel cell controller 180 calculates a fuel cell power availability time point from the fuel cell restart timing based on a time map according to the difference between the fuel cell power availability determination air flow rate and the air flow rate at the time of restarting the fuel cell, Can be predicted.

는 연료전지의 재 기동 시점의 공기 유량(Cathode Gas Flowrate)을 의미한다. 또한, 연료전지 파워 가용(FC power available)은 공기 유량이 일정 수준 도달하는 시점으로, 도 3의

는 연료전지 파워 가용 판단 기준 공기유량(Cathode Gas Flowrate)을 의미하는 것이다.The fuel cell stop (FC stop) disclosed in FIG. 3 means that the air supply to the cathode of the fuel cell 130 is stopped. In addition, the fuel cell restart (FC restart) is a state in which air is supplied to the cathode of the fuel cell 130 again,

Quot; refers to the air flow rate at the time of restarting the fuel cell. The FC power available is a time point when the air flow rate reaches a certain level,

Means a fuel cell power availability determination air flow rate (Cathode Gas Flow Rate).

)으로부터 연료전지의 재 기동 시점의 공기유량(

)을 감한 값에 따른 소요시간 맵으로 연료전지 재 기동 시점으로부터 연료전지 파워 가용 시점까지의 소요 시간을 결정할 수 있다. 이때, 소요시간 맵은 연료전지 제어기(180) 설계 시 초기 설정된 것으로서,

-

에 따라 소요되는 시간(Time interval from restart to FC power available)(예를 들어, 도 4의 T₁, T₂, T₃)을 매핑한 것이다. Referring to Figure 4, the fuel cell controller 180 monitors the fuel cell power available air flow rate (

) To the air flow rate at the restarting time of the fuel cell (

) From the start time of the fuel cell to the time when the fuel cell power is available. At this time, the required time map is initially set at the time of designing the fuel cell controller 180,

-

(T ₁ , T ₂ , T _{3 in} FIG. 4) of the time interval from restart to FC power available.

In addition, the fuel cell controller 180 can calculate the available torque of the fuel cell running mode based on real time available power information of the high-voltage battery 170 and other consumed power including the power consumption for the fuel cell restart . To this end, the high-voltage battery 170, which is an auxiliary power source and energy storage means, can notify the fuel cell controller 180 of real-time available power information.

)를 산출할 수 있다.Specifically, the fuel cell controller 180 calculates an allowable torque at the time of running in the fuel cell running mode (EV mode) based on the equation (1)

) Can be calculated.

[Equation 1]

는 전달효율 계수,

는 고전압 배터리의 실시간 가용 파워 정보,

는 연료전지 재 기동을 위한 보기류 소모 파워를 비롯한 기타 소모 파워,

는 모터 회전속도일 수 있다. 이때, 연료전지 제어기(180)는 연료전지 재 기동을 위한 보기류 소모 파워를 비롯한 기타 소모 파워를 산출할 수 있다. 상기 기타 소모 파워는 고전압 배터리의 실시간 가용 파워를 제외한 나머지 소모 파워를 의미하는 것으로 정의하기로 한다.remind

The transmission efficiency coefficient,

Real-time available power information of high-voltage batteries,

The power consumption for the fuel cell re-start, other power consumption,

May be the motor rotational speed. At this time, the fuel cell controller 180 may calculate other consuming power including the exhaust flow power for restarting the fuel cell. The other consuming power is defined as meaning remaining power excluding the real-time available power of the high-voltage battery.

Further, the fuel cell controller 180 can set a motor torque command increase rate limiting map that can reach the available torque of the fuel cell running mode within the time from the fuel cell restart timing to the fuel cell power availability timing.

At this time, the motor torque command increase rate limiting map maps the time from the fuel cell restart time to the fuel cell power availability point and the available torque of the fuel cell running mode to the predetermined reference to map the next motor torque increase rate limit relative to the current motor torque command Quot; and " set "

The available torque of the fuel cell running mode may be a reference available torque of the predetermined fuel cell running mode.

The available torque of the fuel cell running mode is calculated by subtracting the available torque obtained by multiplying the motor torque command increasing rate determined by the motor torque command increasing rate limit map calculated on the basis of the reference available torque of the predetermined fuel cell running mode by the fuel- Lt; / RTI > At this time, the fuel-cell running mode available torque ratio may be a value obtained by dividing the current available torque of the fuel cell running mode by the reference available torque of the fuel cell running mode.

Hereinafter, a method of setting the motor torque command increase rate limiting map will be described with reference to Figs. 5 and 6. Fig.

=

)하도록 한다. 이때, 연료전지 재 기동 시점의 토크 상승률이 동일함(

=

)은 동일한 초기 가속감을 위함이다. 도 5에서 도시하는 바와 같이, 연료전지 파워 가용시점의 토크는 연료전지 주행모드(EV mode) 가용 토크(

)로 동일하나, 소요시간이 클수록 토크 상승률 제한치가 작은 값을 갖게 됨을 확인할 수 있다.As shown in FIG. 5, even if the required time (T ₁ , T ₂ ) from the fuel cell restart timing (FC restart) to the fuel cell power start timing (FC power available) Growth rate is the same (

=

). At this time, the torque increasing rate at the time of restarting the fuel cell is the same

=

) Are for the same initial acceleration. As shown in Fig. 5, the torque at the fuel cell power availability point corresponds to the fuel cell running mode (EV mode) available torque

), But it can be confirmed that the larger the time required, the smaller the torque increase rate limit value.

The fuel cell control unit 180 can be set by mapping to the motor torque increase rate limit value of the next step with respect to the current motor torque command so as to smoothly reach the fuel cell running mode available torque up to the fuel cell power availability point on the basis of the above- .

For example, referring to FIG. 6, the next motor torque increase rate limit value is mapped to the current motor torque command with respect to different required times T ₁ , T ₂ , and T ₃ from the fuel cell restart timing to the fuel cell power enable timing , The rate of rise at zero torque is the same, and the gradient of gentle slope toward T ₁ -> T ₃ is shown.

The fuel cell controller 180 may set the motor torque increase rate limiting map as shown in FIG. 6 through a predetermined reference derived through experiment.

)일 때를 기준치로 하여 설정한 기준맵이며, 이를 통해 결정된 상승률에 연료전지 주행모드의 가용토크 비율(

)을 곱하여 확대 적용하는 것도 가능하다 것이다.The motor torque increase rate limiting map in Fig. 6 indicates that the available torque in the fuel cell running mode is the reference available torque

) Is a reference map that is set as a reference value, and the allowable torque ratio of the fuel cell running mode

It is also possible to multiply by multiplying it.

At this time, the available torque ratio of the fuel cell running mode can be calculated through Equation (2).

&Quot; (2) "

는 기준 가용토크이고,

는 현재 가용토크를 의미할 수 있다.Described above

Is a reference available torque,

Lt; RTI ID = 0.0 > available torque. ≪ / RTI >

In addition, the fuel cell controller 180 may perform the drive shock reduction filtering processing on the motor torque command before outputting the motor torque command calculated in accordance with the motor torque command increase rate limit map to the inverter 120 to output the final motor torque command have. At this time, driving shock mitigation filtering means that the motor torque command transmitted to the inverter 120 is processed so as not to act as an impact on the driving of the motor 110.

Referring to FIG. 7 of the general case, when the fuel cell is stopped and the fuel cell is stopped when it is determined that the fuel cell is stopped (FC STOP) mode, the fuel cell runs until the FC POWER AVAILABLE after the FC RESTART, (EM mode). At this time, when the restriction due to the available torque of the fuel cell running mode occurs, the torque curve (A) is distorted as shown in FIG. 7 and the acceleration unevenness such as acceleration -> stop - So that the ride comfort of the fuel cell vehicle can be reduced.

8, when the FC STOP is canceled due to the determination of the acceleration intention, the fuel cell power availability point (FC POWER AVAILABLE) is predicted and the motor torque becomes equal to the fuel The increase rate of the motor torque command is limited so as to smoothly rise to the usable torque of the battery running mode. Therefore, as in the case of B and C, the sudden change point of the torque curve is controlled and the conventional acceleration unevenness . In this case, the torque curve B shows the case where the motor torque before the drive shock reduction filtering is applied, and the torque curve C shows the case where the motor torque after the drive shock reduction filtering is applied.

9 is a flowchart for explaining a control method of the fuel cell vehicle.

First, the fuel cell vehicle 100 determines the time from the fuel cell restart timing to the fuel cell power availability timing when the fuel cell stop is canceled and the fuel cell 130 is restarted (S110 to S130) (S140).

Specifically, the fuel cell vehicle 100 measures the time from the fuel cell restart timing to the fuel cell power availability timing based on the required time map according to the difference between the fuel cell power availability determination air flow rate and the air flow rate at the time of restarting the fuel cell Time can be predicted.

Next, the fuel cell vehicle 100 can calculate the available torque of the fuel cell running mode (S150).

The fuel cell vehicle 100 can calculate the available torque of the fuel cell running mode based on real time available power information of the high voltage battery 170 and other consumed power including the current consumption power for restarting the fuel cell.

)를 산출할 수 있다.Specifically, the fuel cell vehicle 100 calculates the available torque of the fuel cell running mode (for example,

) Can be calculated.

Next, the fuel cell vehicle 100 may determine a motor torque command increase rate limit map that can reach the available torque of the fuel cell running mode within a period of time from when the fuel cell restart is started to when the fuel cell power is available (S160).

The motor torque command increase rate limiting map may be set such that the time from the fuel cell restart timing to the fuel cell power availability timing and the available torque of the fuel cell running mode are set to a predetermined reference so that the next motor torque increase rate limit And may be a value set by mapping.

At this time, the available torque of the fuel cell running mode may be the reference available torque of the predetermined fuel cell running mode.

The available torque of the fuel cell running mode is calculated by multiplying the motor torque command increasing rate determined by the motor torque command increasing rate limit map calculated on the basis of the reference available torque of the predetermined fuel cell running mode by the fuel- Torque may also be possible. At this time, the fuel-cell running mode available torque ratio may be a value obtained by dividing the current available torque of the fuel cell running mode by the reference available torque of the fuel cell running mode.

Next, the fuel cell vehicle 100 may output the motor torque command in accordance with the determined motor torque command increase rate limit map (S170).

Next, the fuel cell vehicle 100 performs drive shock reduction filtering processing on the motor torque command before outputting the motor torque command calculated in accordance with the motor torque command increase rate limit map to the inverter 120, and outputs the final motor torque command to the inverter 120 (S180).

Thereafter, the fuel cell vehicle 100 checks whether or not the power of the fuel cell 130 is in an available state. When the power of the fuel cell 130 is in the available state, the final motor torque The command can be output to the inverter 120 (S190, S200).

On the other hand, when the power of the fuel cell 130 is not in the usable state, the fuel cell vehicle 100 can be performed again from step S170.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification or improvement is possible.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1, 100: fuel cell vehicle
110: motor
120: Inverter
130: Fuel cell
140: hydrogen supply device
150: air supply device
160: High-voltage power converter
170: High voltage battery
180: Fuel cell controller

Claims (18)

An inverter for driving the motor in accordance with the output from the fuel cell and the high voltage battery; And
When the fuel cell stoppage is canceled and the fuel cell is restarted, the time from the fuel cell restart timing to the fuel cell power availability timing is estimated, the available torque of the fuel cell running mode is calculated, Setting a motor torque command increase rate limiting map capable of reaching an available torque of the fuel cell running mode within a period of time until the fuel cell power availability point is reached and outputting a motor torque command to the inverter in accordance with the set motor torque command increase rate limit map The fuel cell controller comprising:
The fuel cell controller predicts the time from the fuel cell restart timing to the fuel cell power utilization timing based on the required time map according to the difference between the fuel cell power availability determination air flow rate and the air flow rate at the time of restarting the fuel cell Fuel cell vehicle.
delete The method according to claim 1,
The fuel cell controller includes:
Wherein the available torque of the fuel cell running mode is calculated on the basis of real time available power information of the high-voltage battery and other consumed power including a current consumption power for restarting the fuel cell.
The method according to claim 1,
The fuel cell controller includes:
Based on Equation (1), the available torque of the fuel cell running mode

),
Equation (1)

ego,
remind

The transmission efficiency coefficient,

Real-time available power information of high-voltage batteries,

The power consumption for the fuel cell re-start, other power consumption,

Is a motor rotation speed.
The method according to claim 1,
Wherein the motor torque command increase rate limiting map includes:
Wherein the fuel cell power mode is a mode in which the fuel cell power mode is activated and the available torque of the fuel cell running mode is applied to a preset reference to map the next motor torque increase rate limit value relative to the current motor torque command value, .
6. The method of claim 5,
The available torque of the fuel cell running mode
And the reference available torque of the predetermined fuel cell running mode.
6. The method of claim 5,
The available torque of the fuel cell running mode
Wherein the available torque obtained by multiplying the motor torque command increase rate determined by the motor torque command increase rate limit map calculated based on the reference available torque of the fuel cell running mode by a fuel-cell running mode available torque ratio.
8. The method of claim 7,
The fuel-cell running mode usable torque ratio is set such that,
Wherein the current available torque of the fuel cell running mode is divided by the reference available torque of the fuel cell running mode.
The method according to claim 1,
The fuel cell controller includes:
Wherein the motor torque command is subjected to drive shock reduction filtering processing before outputting the motor torque command calculated in accordance with the motor torque command increase rate limitation map to the inverter.
Releasing the fuel cell stop and restarting the fuel cell;
Predicting a time from a fuel cell restart timing to a fuel cell power availability timing;
Calculating an available torque of the fuel cell running mode;
Determining a motor torque command increase rate limiting map capable of reaching an available torque of the fuel cell running mode within a time from the fuel cell restart timing to the fuel cell power availability timing; And
And outputting a motor torque command according to the determined motor torque command increase rate limiting map,
Wherein the step of predicting the time until the fuel cell power availability time is based on a time required map based on a difference between the fuel cell power availability determination air flow rate and the air flow rate at the time of restarting the fuel cell, And estimating the time until the battery power availability time.
delete 11. The method of claim 10,
In the step of calculating the available torque of the fuel cell running mode,
A method of controlling a fuel cell vehicle, comprising: calculating a usable torque of a fuel cell running mode based on real time usable power information of a high voltage battery and other consuming power including a power consumption for powering the fuel cell.
11. The method of claim 10,
In the step of calculating the available torque of the fuel cell running mode,
Based on Equation (1), the available torque of the fuel cell running mode

),
Equation (1)

ego,
remind

The transmission efficiency coefficient,

Real-time available power information of high-voltage batteries,

The power consumption for the fuel cell re-start, other power consumption,

Is a motor rotation speed.
11. The method of claim 10,
Wherein the motor torque command increase rate limiting map includes:
Wherein the fuel cell power mode is a mode in which the fuel cell power mode is activated and the available torque of the fuel cell running mode is applied to a preset reference to map the next motor torque increase rate limit value relative to the current motor torque command value, / RTI >
15. The method of claim 14,
The available torque of the fuel cell running mode
Wherein the reference allowable torque of the fuel cell running mode is a predetermined reference torque of the fuel cell running mode.
15. The method of claim 14,
The available torque of the fuel cell running mode
Wherein the available torque obtained by multiplying the motor torque command increase rate determined by the motor torque command increase rate limit map calculated based on the reference available torque of the predetermined fuel cell running mode times the available torque ratio in the fuel cell running mode.
17. The method of claim 16,
The fuel-cell running mode usable torque ratio is set such that,
Wherein the current available torque of the fuel cell running mode is divided by the reference available torque of the fuel cell running mode.
11. The method of claim 10,
After the step of outputting the motor torque command,
Performing drive shock reduction filtering processing on the motor torque command before outputting the motor torque command calculated in accordance with the motor torque command increase rate limitation map to the inverter;
Further comprising the steps of:

Images