CN108001275A - A kind of fuel cell electric vehicle electric power coupling drive system and its control method - Google Patents

A kind of fuel cell electric vehicle electric power coupling drive system and its control method Download PDF

Info

Publication number
CN108001275A
CN108001275A CN201711309550.1A CN201711309550A CN108001275A CN 108001275 A CN108001275 A CN 108001275A CN 201711309550 A CN201711309550 A CN 201711309550A CN 108001275 A CN108001275 A CN 108001275A
Authority
CN
China
Prior art keywords
msub
mrow
power
fuel cell
pps
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201711309550.1A
Other languages
Chinese (zh)
Inventor
荀倩
郭晓瑞
李祖欣
王燕锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huzhou University
Original Assignee
Huzhou University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huzhou University filed Critical Huzhou University
Priority to CN201711309550.1A priority Critical patent/CN108001275A/en
Publication of CN108001275A publication Critical patent/CN108001275A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/40—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for controlling a combination of batteries and fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

Fuel cell electric vehicle electric power coupling drive system and its control method, including entire car controller, fuel cell system, peak value power supply, control peak value power supply discharge and recharge energy converter, motor and motor driver, by motor-driven transmission system；Motor driver, fuel cell system and energy converter are all connected on power transmission line；The signal input output end of entire car controller controls fuel cell system, energy converter and motor driver by gathering various control signal and status data.The design of system unit is calculated by respective formula and magnitude relationship, and considers the gearratio of the power output needed for motor, the rated power of fuel cell system and transmission system.The control method proposed based on the system hardware ensure that the coupling effect between peak value power supply and fuel cell, improve the service life of fuel cell, and preferably solve the problems, such as that the prior art can not absorb automobile in second energy caused by retarding braking.

Description

A kind of fuel cell electric vehicle electric power coupling drive system and its control method
Technical field
The present invention relates to electric automobile field, more particularly to a kind of fuel cell electric vehicle electric power coupling drive system and Its control method.
Background technology
Traditional combustion engine automobile is one of greatest achievement of modern science and technology, meets the daily traffic life of people. However, with the development of automobile industry, the increase of car ownership has caused serious environmental pollution and fuel resource problem, causes Aggravate global warming.To solve the above problems, national government is advocated efficiently, and cleaning, safety traffic, many automobile makings Business greatly develops electric automobile so that regenerative resource is greatly developed, and electric automobile starts progressively to replace the internal combustion of transmission Machine automobile.Fuel cell has very high energy storage density, pollution-free in power generating process, is widely used in electric automobile In.However, the output voltage of fuel cell is relatively low, and as the change of load current, output voltage amplitude change greatly；It is electronic In the process of running, the fluctuation of load is larger for automobile, therefore fuel cell output voltage can be caused to change greatly.
If for drive system only with fuel cell-powered, dynamic performance is poor.Also, the power density of fuel cell Relatively low, to reach peak power, the volume and weight of the fuel cell met the requirements will be very big.In addition, complete one completely Driving cycle, fuel cell bear high-power change rate the fluctuation of load and for a long time be in unloaded idle state, cause combustion Expect that battery degrades, reduce its service life.Importantly, system can not absorb automobile in secondary energy caused by retarding braking Amount.
The content of the invention
The technical problem to be solved in the present invention is：Design one kind is believed by increasing peak value power-supply system, and according to multi-parameter Number designing fuel cell electric automobile major part, and realize that peak value power-supply system and fuel cell have by control method Electric power coupling is imitated, solves that the operation fluctuation of load of existing electric automobile is larger and system can not absorb automobile and be produced in retarding braking Second energy problem a kind of fuel cell electric vehicle electric power coupling drive system and its control method.
In order to solve the above-mentioned technical problem, the fuel cell electric vehicle electric power coupling drive system that the present invention designs includes Entire car controller, fuel cell system, peak value power supply, the energy converter for controlling peak value power supply discharge and recharge, motor and motor drive Move device, by motor-driven transmission system；The motor driver, fuel cell system and energy converter are all connected to electricity On power transmission line；The signal input part of the entire car controller is connected with the traction signal line of accelerator pedal, brake pedal Tach signal line, fuel battery power signal wire, the peak power signal of peak value power supply in brake signal line, transmission system Line；The signal output part of the entire car controller is connected to the fuel cell system and electric energy by electric control signal line Converter, and motor driver is connected by motor control signal line.
As a kind of preferred：The power of motor needs to meet to be more than accelerating ability formula (1) P at the same timet1Value, max. speed Performance formula (2) Pt2Value and grade climbing performance formula (3) Pt3Value；
Wherein：η represents transmission system efficiency；δ1Represent the rotational inertia coefficient of wheel；δ2Represent relevant with power set The transmission inertia coefficient of rotary part；i0For the gearratio of final gear；igFor the gearratio of transmission device；i0igTo be total Gearratio；M is vehicular gross combined weight (kg)；tαFor desired acceleration time (s)；vfFinal speed (m/s) after accelerating for vehicle； vbFor the speed (m/s) corresponding to motor base speed；G is acceleration of gravity；frFor the coefficient of rolling resistance of tire；V is t moment vapour The speed of car；ραFor atmospheric density；CDFor coefficient of air resistance；AfFor vehicle front face area (m2)；vmaxFor max. speed (m/ s)；Speed when v is climbing；α is uphill angle.
As a kind of preferred：The rated power P of fuel cell systemfMore than Pt2And Pt3。
As a kind of preferred：The boosting inverter that fuel cell system uses is level-one formula voltage conversion circuit.
As a kind of preferred：Peak value power supply includes super capacitor or storage battery or super capacitor and storage battery.
As a kind of preferred：The gearratio of transmission system is located at maximum transmission ratio formula (4) imaxValue and fastest ratio Formula (5) iminValue between：
Wherein：nmaxFor motor maximum speed (r/min)；R is tire rolling radius (m)；vmaxFor max. speed (m/s)； TmaxFor motor torque capacity (Nm)；αmaxFor maximum ramp angle.
A kind of control method of fuel cell electric vehicle electric power coupling drive system, it is characterised in that：Including following mistake Journey：
Step (1) subtracts braking instruction power according to traction command power, and control instruction power is calculated, judges to control Whether command power is less than 0, is braked if setting up, invalid to draw；
Step (2) judges whether control instruction power is more than the rated power of fuel cell system：By fuel if setting up Power of the rated power of battery system as fuel cell system, and control instruction work(is equal to by the PPS traction powers provided Rate subtracts the power of fuel cell system；PPS chargings or traction if invalid；
Step (3) judges whether control instruction power is less than or equal to the rated power of fuel cell system：Sentence if setting up Whether the energy grade of disconnected PPS is less than the maximum storage energy of PPS；Judge whether the energy grade of PPS is more than if invalid The minimum storage energy of PPS；
Step (4) is not less than the maximum storage energy of PPS when the energy grade of PPS, then the power of fuel cell is 0, and And the traction power that PPS is provided is equal to control instruction power；When minimum storage energy of the energy grade of PPS more than PPS, then fire Expect the power command power, and the power of PPS is 0 in order to control of battery；
Step (5) stores energy when maximum storage energy of the energy grade of PPS less than PPS or less than the minimum of PPS, Then charge to PPS：The power of fuel cell is equal to the rated power of fuel cell；The charge power of PPS is equal to fuel cell Power subtracts control instruction power.
Beneficial effect of the present invention：
1st, the gearratio of the power output needed for motor, the rated power of fuel cell system and transmission system is all fully whole Close various governing factors and actual control requires, the fuel battery electric vapour of design is calculated by respective formula and magnitude relationship Car, ensure that the coupling effect between peak value power supply and fuel cell so that the control effect of the control method based on hardware foundation More preferably.
2nd, fuel cell system using boosting inverter only need level-one formula voltage conversion circuit solve fuel battery voltage it is low, Output voltage with load change it is larger the problem of, (fuel cell system first passes through electric energy and turns with the two-stage type drive system of transmission Converting direct-current power into alternating-current power within a certain range, then by DC/AC inverters is driven three-phase by output voltage stabilization by parallel operation Motor) compare, converter cost is reduced, the integrated level of motor driven systems is added, improves system effectiveness.
3rd, peak value power supply, the energy converter that peak value power-supply system is made of storage battery, super capacitor form, and effectively solve The problem of fuel cell-powered bad dynamic performance, the charge and discharge process of storage battery is controlled by energy converter, can be effective Fuel cell is protected, improves dynamic performance.
4th, storage battery and super capacitor can absorb energy of the electric automobile in braking or deceleration, and stored Come, therefore be not required pluggable mode to charge a battery, super capacitor and storage battery can provide very big peak in a short time It is worth power, compensate for the shortcomings that fuel cell response speed is slow.
5th, the fuel cell system of high-energy-density and the storage battery of high power density, super capacitor are combined, made The power-supply system of fuel cell electric vehicle has the characteristics that high-energy and high power density, improves the integrated of electric automobile Degree, enhances its cruising ability.
Brief description of the drawings
Attached drawing 1：A kind of structure diagram of the present invention.
Attached drawing 2：The basic principle figure of circuit relationships between electric system of the present invention and motor.
Attached drawing 3：The control method flow chart of the present invention.
Attached drawing 4：Suffered roadlock figure when automobile is climbed.
Pcomm- control instruction power
Pfc-ratedThe rated power of-fuel cell system
PfcThe power of-fuel cell system
Pfc-minThe minimum power of-fuel cell system
Ppps-tractionThe traction power that-PPS is provided
Ppps-chargingThe charge power of-PPS
The energy grade of E-PPS
EminThe minimum storage energy of-PPS
EmaxThe highest storage energy of-PPS
Embodiment
Fuel cell electric vehicle electric power coupling drive system as shown in Figure 1, including entire car controller 3, fuel cell System 4, peak value power supply 7, peak value power supply 7 include super capacitor or storage battery, the peak value power supply 7 can with energy converter 6, Referred to as DC/DC converters, carry out discharge and recharge, in addition, fuel cell electric vehicle electric power to peak value power supply 7 at the control Coupling drive system further includes motor 8 and motor driver 5, transmission system 9, and transmission system 9 is mainly used for band motor car wheel 10.
As Fig. 2 is described in the present invention in addition to signal control portion, circuit relationships between electric system and motor Basic principle figure.Peak value power supply includes super capacitor and storage battery in figure, and peak value power supply passes through electrical energy transformer and fuel After battery coupling, it is connected to together on the dc bus of voltage change and exports electric energy to three-phase voltage increasing inverter, the three-phase voltage increasing Direct current is converted into being output to after three-phase alternating current by inverter as motor driver represents electronic by three phase electric machine winding In machine.Electrical energy transformer in the figure approximate phase in structure with a certain phase bi-directional boost converters in three-phase voltage increasing inverter Together, it is that type selecting is different：It is capacitor C i.e. using the primary side (input side) of simple Bidirectional up-down pressure DC/DC converters, capacitance Two Mosfet power switch of two gate switch S1, S2 of series connection and two rectifier D1, D2 compositions behind device C, in primary side Series reactor L1 on circuit, is equipped with inductor L2 on secondary (output side) circuit.To with each booster converter for, it An AC sinusoidal voltage for carrying direct current biasing is produced, is exported so each booster converter produces one than fuel cell A high unidirectional alternating voltage of voltage.
The signal kinds of full-vehicle control are described in Fig. 1：The signal input part of entire car controller 3 is connected with accelerator pedal 1 Traction signal, the brake signal of brake pedal 2, the tach signal in transmission system 9, collected in fuel cell system 4 The peak power signal of fuel battery power signal, peak value power supply 7.After entire car controller 3 is analyzed above-mentioned signal, output Electric control signal controls the work of fuel cell 4 and energy converter 6, is exactly generally that entire car controller 3 controls fuel electricity The output in pond 4 is coupled with peak value power supply 7 by carrying out effective electric power between 6 discharge and recharge of energy converter, electric power coupling effect Fruit can realize the optimization that motor driver 5 works.
Why entire car controller needs to gather above-mentioned input signal, is because in order to realize the working effect of motor It is optimal, that is, need the power output of motor to need while meet to be more than accelerating ability formula (1) Pt1Value, max. speed performance it is public Formula (2) Pt2Value and grade climbing performance formula (3) Pt3Value；
Wherein：η represents transmission system efficiency；δ1Represent the rotational inertia coefficient of wheel；δ2Represent relevant with power set The transmission inertia coefficient of rotary part；i0For the gearratio of final gear；igFor the gearratio of transmission device；i0igTo be total Gearratio；M is vehicular gross combined weight (kg)；tαFor desired acceleration time (s)；vfFinal speed (m/s) after accelerating for vehicle； vbFor the speed (m/s) corresponding to motor base speed；G is acceleration of gravity；frFor the coefficient of rolling resistance of tire；V is t moment vapour The speed of car；ραFor atmospheric density；CDFor coefficient of air resistance；AfFor vehicle front face area (m2)；vmaxFor max. speed (m/ s)；Speed when v is climbing；α is uphill angle.
By above-mentioned formula (1), (2) and (3) are obtained by mathematical modeling after actual data analysis, except that can count Calculation obtains the output power needs of motor, and the rated power P of fuel cell system can also be calculatedfMeet：More than Pt2With Pt3。
Without under same road conditions, driving the gearratio of the transmission system of vehicle wheel rotation to need to meet：In maximum transmission ratio formula (4)imaxValue and fastest ratio formula (5) iminValue between：
Wherein：nmaxFor motor maximum speed (r/min)；R is tire rolling radius (m)；vmaxFor max. speed (m/s)； TmaxFor motor torque capacity (Nm)；αmaxFor maximum ramp angle.
Specific cases of design：A kind of fuel cell electric vehicle vehicle technical parameter and power performance index request such as table 1st, shown in table 2.
1 vehicle technical parameter of table
Technical parameter Unit Parameter value
Car body gross mass m kg 1500 (fully loaded), 1250 (zero loads)
Coefficient of rolling resistance fr - 0.01
Coefficient of air resistance CD - 0.3
Front face area Af m2 2.2
Transmission system efficiency η - 0.92
Wheelbase L m 2.7
Distance L of the center of gravity to front-wheel centera m 1.134 (fully loaded), 0.95 (zero load)
Height of C.G. hg m 0.6 (fully loaded), 0.5 (zero load)
2 power performance index of table
(1), the design of electric motor and controller system is driven：
The rated power of driving motor needs to be calculated according to worst situation, therefore with automobile accelerating ability (car The time needed for given speed is accelerated to from zero speed) estimation, i.e.,：Power needed for driving motor is greater than required work(during acceleration Rate.Vehicle power for consuming when accelerating isIn order to accurately determine driving motor rated power, it is necessary to Consider the power for overcoming tire drag and air drag to consume.Therefore, the mean power of resistance is overcome during acceleration to be represented For：
Wherein, δ is rotational inertia coefficient；M is vehicular gross combined weight (kg)；tαFor desired acceleration time (s)；vfFor vehicle Final speed (m/s) after acceleration；vbFor the speed (m/s) corresponding to motor base speed；G (takes 9.8m/s for acceleration of gravity2)； frFor the coefficient of rolling resistance of tire；V is the speed of t moment automobile；ρα(1.202kg/m is taken for atmospheric density3)；CDFor air Resistance coefficient；AfFor vehicle front face area (m2)。
Assuming that Vehicle Accelerating Period is even acceleration, then can be expressed as in the car speed of t moment
(7) are brought into (6), are obtained
Accordingly, it is considered to the efficiency of motor transmission system, automobile is in taIn time, from 0 fast acceleration to vfRequired general power It can be expressed as：
In formula, Pt1To meet the driving power of motor (W) of accelerating ability needs；η is transmission efficiency.
In formula (1), the rotational inertia coefficient δ of automobile can be write as
Wherein, IwFor total wheel angular motion inertia, m is wheel mass, rdFor radius of wheel, IwTo be related to power set Rotary part angular motion inertia, r is radius with the relevant rotary part of power set.
(9) are written as δ=1+ δ1+δ2ig 2i0 2 (10)
Wherein, δ1Represent the rotational inertia coefficient of wheel, can estimate that its value is 0.04 according to wheel mass, radius；δ2Represent With the transmission inertia coefficient of the relevant rotary part of power set, according to wheel mass, with the relevant rotary part of power set Radius can estimate its value be 0.0025；i0For the gearratio (base ratio) of final gear；igFor the transmission of transmission device Than；i0igFor resultant gear ratio.The motor power (output) that can must meet electric automobile accelerating ability needs is about 69.8kW.
It can be obtained by (1), if automobile is with constant max. speed vmaxWhen driving, required power：
In formula, vmaxFor max. speed (m/s).It can must meet that the motor power (output) needed for max. speed is about 34.1kW.
As shown in Figure 4：Automobile climbing when, grade resistance is produced due to the effect of gravity, with tire drag it Be referred to as roadlock Frd, can be expressed as：
Frd=mg (frcosα+sinα) (11)
Therefore, driving motor needs to overcome grade resistance, tire drag and air drag, can just climb up slope, therefore, When automobile is run in climbing with speed v, required power
In formula, speed when v is climbing；α is uphill angle.
As formula (3) can be able to 100km/h speed travelled in 3 ° of slope surface needed for power be 32.1kW, with 20km/h's Speed climb 20 ° of slope needed for power be 33.5kW.
It can be seen from the above that required power is much larger than required power when climbing and running at high speed when automobile accelerates.So choosing Driving motor that rated power is 70kW is determined (assuming that motor rated speed maximum speed, to meet accelerating ability requirement.)
(2), fuel cell system power designs：
The design of fuel cell electric automobile, when vehicle with relatively high speed state constant speed over long distances when driving, it is required Power Pt2(above result of calculation is about 34.1kW) is individually provided by fuel cell system, and in the situation for not utilizing boosting battery Under, to give speed in appropriate gradient downward driving individually to output power of motor Pt3(above result of calculation is about 32.1kW). Accordingly, it is considered to arrive fuel cell system efficiency and transmission efficiency, the rated power P of fuel cell systemfIt should be slightly bigger than Pt2And Pt3, The fuel cell system that rated power is 40kW can be selected.
(3), peak value power supply is designed using the power and energy capacity of battery pack：
Based on the motor peak power output needed for the accelerating ability as defined in design requirement, and it is true by constant speed drive Fixed fuel cell system power, the rated power for selecting battery pack is 40kW.
Under normal conditions, it is not required battery pack to provide energy in normally travel, only under starting and anxious acceleration mode Battery pack is needed to provide auxiliary energy.Compare, at the start since fuel cell system has just been started to work, temperature compared with Low, generated energy is limited, at this moment just relies primarily on battery-powered.Battery charging state can be obtained according to loop test Between the excursion of (State of Charge, SOC) is 0.6~0.8, its efficiency highest in this charged range of capacity. Battery pack allows energy variation scope to be 0.2kWh, therefore the energy capacity of battery pack is 0.2/ (0.8-0.6)=1kWh.
(4), gearratio designs：
Since motor speed is generally higher than angular speed of wheel, so drive system needs to be equipped with main reducing gear, and electronic vapour Car is generally using single grade of transmission, so the gearratio design of transmission system should meet the automobile when motor is in maximum speed Expected max. speed can be reached, i.e.,：
Wherein, imaxFor the maximum of gearratio；nmaxFor motor maximum speed (r/min)；R is tire rolling radius (m)； vmaxFor max. speed (m/s).I can be obtained according to above parametermaxFor 3.544, i.e., selected gearratio cannot be more than 3.544.
Fastest ratio should meet maximum gradeability, i.e.,：
Wherein, iminFor fastest ratio；TmaxFor motor torque capacity (Nm)；αmaxFor maximum 20 ° of ramp angle, according to Automobile parameter can obtain iminFor 3.044.The gearratio of the automobile will be in iminAnd imaxBetween, i.e. 3.044≤i≤3.544.
Understand to bring corresponding actual parameter in above-mentioned formula into by signal acquisition in entire car controller by case Calculate available：(1) power output needed for motor；(2) rated power of fuel cell system；(3) transmission system Gearratio, we can be set in entire car controller below control method, will all be connected on power transmission line Motor driver, fuel cell system and energy converter, by vehicle control unit controls realize fuel cell system and by The coupling of peak value power supply (peak power system, in control method, are represented with English PPS) under energy converter control, One suitable driving current of motor driver is supplied to, that is, allows motor driver to have the output of a suitable current operation control Power, operation control is mainly drawn and braking, or to peak value power supply discharge and recharge, specific coupling driving control method It is as follows：
As shown in Figure 3：A kind of control method of fuel cell electric vehicle electric power coupling drive system, including following mistake Journey：
Step (1) is according to traction command power PbSubtract braking instruction power Ptr, control instruction power P is calculatedcomm, Judge control instruction power PcommWhether it is less than 0, is braked if setting up, it is invalid to draw.
Step (2) judges control instruction power PcommWhether the rated power P of fuel cell system is more thanfc-rated：If into It is vertical then by the rated power P of fuel cell systemfc-ratedPower P as fuel cell systemfc, and the traction provided by PPS Power Ppps-tractionEqual to control instruction power PcommSubtract the power P of fuel cell systemfc；If invalid PPS charging or Traction.
Step (3) judges control instruction power PcommWhether the rated power P of fuel cell system is less than or equal tofc-rated： Judge whether the energy grade E of PPS is less than the maximum storage ENERGY E of PPS if setting upmax；The energy of PPS is judged if invalid Measuring grade E, whether the minimum more than PPS stores ENERGY Emin。
Step (4) is not less than the maximum storage ENERGY E of PPS as the energy grade E of PPSmax, then the power P of fuel cellfc For 0, and the traction power P that PPS is providedpps-tractionEqual to control instruction power Pcomm；When the energy grade E of PPS is more than The minimum storage ENERGY E of PPSmin, then the power P of fuel cellfcCommand power P in order to controlcomm, and the power P of PPSppsFor 0。
Step (5) is less than the maximum storage ENERGY E of PPS as the energy grade E of PPSmaxOr the minimum storage less than PPS ENERGY Emin, then charge to PPS：The power P of fuel cellfcEqual to the rated power P of fuel cellfc-rated；The charging work(of PPS Rate Ppps-chargingEqual to the power P of fuel cellfcSubtract control instruction power Pcomm。
Realize that peak value power-supply system is coupled with fuel cell active power using the control method, that is, realize charging and lead The reasonable selection drawn, and the setting of traction power and charge power is also specifically, this solves existing electric automobile operation load A kind of fuel battery electric vapour of the automobile in second energy problem caused by retarding braking can not be absorbed by fluctuating larger and system Car electric power coupling drive system and its control method.
Basic principle, main feature and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its Equivalent defines.

Claims (7)

  1. A kind of 1. fuel cell electric vehicle electric power coupling drive system, it is characterised in that：Including entire car controller, fuel cell System, peak value power supply, control peak value power supply discharge and recharge energy converter, motor and motor driver, by motor-driven biography Dynamic system；The motor driver, fuel cell system and energy converter are all connected on power transmission line；Described is whole The signal input part of vehicle controller is connected with the traction signal line, the brake signal line of brake pedal, transmission system of accelerator pedal In tach signal line, fuel battery power signal wire, the peak power signal line of peak value power supply；The entire car controller Signal output part is connected to the fuel cell system and energy converter by electric control signal line, and passes through motor control Signal wire processed connects motor driver.
  2. 2. fuel cell electric vehicle electric power coupling drive system according to claim 1, it is characterised in that：The electricity The power of machine needs to meet to be more than accelerating ability formula (1) P at the same timet1Value, max. speed performance formula (2) Pt2Value and climb Slope performance formula (3) Pt3Value；
    <mrow> <msub> <mi>P</mi> <mrow> <mi>t</mi> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mfrac> <mn>1</mn> <mi>&amp;eta;</mi> </mfrac> <mo>&amp;lsqb;</mo> <mfrac> <mrow> <mo>(</mo> <mn>1</mn> <mo>+</mo> <msub> <mi>&amp;delta;</mi> <mn>1</mn> </msub> <mo>+</mo> <msub> <mi>&amp;delta;</mi> <mn>2</mn> </msub> <msup> <msub> <mi>i</mi> <mi>g</mi> </msub> <mn>2</mn> </msup> <msup> <msub> <mi>i</mi> <mn>0</mn> </msub> <mn>2</mn> </msup> <mo>)</mo> <mi>m</mi> </mrow> <mrow> <mn>2</mn> <msub> <mi>t</mi> <mi>&amp;alpha;</mi> </msub> </mrow> </mfrac> <mrow> <mo>(</mo> <msup> <msub> <mi>v</mi> <mi>f</mi> </msub> <mn>2</mn> </msup> <mo>+</mo> <msup> <msub> <mi>v</mi> <mi>b</mi> </msub> <mn>2</mn> </msup> <mo>)</mo> </mrow> <mo>+</mo> <mfrac> <mn>2</mn> <mn>3</mn> </mfrac> <msub> <mi>mgf</mi> <mi>r</mi> </msub> <msub> <mi>v</mi> <mi>f</mi> </msub> <mo>+</mo> <mfrac> <mn>1</mn> <mn>5</mn> </mfrac> <msub> <mi>&amp;rho;</mi> <mi>&amp;alpha;</mi> </msub> <msub> <mi>C</mi> <mi>D</mi> </msub> <msub> <mi>A</mi> <mi>f</mi> </msub> <msup> <msub> <mi>v</mi> <mi>f</mi> </msub> <mn>3</mn> </msup> <mo>&amp;rsqb;</mo> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>)</mo> </mrow> </mrow>
    <mrow> <msub> <mi>P</mi> <mrow> <mi>t</mi> <mn>2</mn> </mrow> </msub> <mo>=</mo> <mfrac> <mn>1</mn> <mi>&amp;eta;</mi> </mfrac> <mrow> <mo>(</mo> <msub> <mi>mgf</mi> <mi>r</mi> </msub> <msub> <mi>v</mi> <mrow> <mi>m</mi> <mi>a</mi> <mi>x</mi> </mrow> </msub> <mo>+</mo> <mfrac> <mn>1</mn> <mn>2</mn> </mfrac> <msub> <mi>&amp;rho;</mi> <mi>&amp;alpha;</mi> </msub> <msub> <mi>C</mi> <mi>D</mi> </msub> <msub> <mi>A</mi> <mi>f</mi> </msub> <msup> <msub> <mi>v</mi> <mrow> <mi>m</mi> <mi>a</mi> <mi>x</mi> </mrow> </msub> <mn>3</mn> </msup> <mo>)</mo> </mrow> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>2</mn> <mo>)</mo> </mrow> </mrow>
    <mrow> <msub> <mi>P</mi> <mrow> <mi>t</mi> <mn>3</mn> </mrow> </msub> <mo>=</mo> <mfrac> <mn>1</mn> <mi>&amp;eta;</mi> </mfrac> <mrow> <mo>(</mo> <msub> <mi>mgf</mi> <mi>r</mi> </msub> <mi>v</mi> <mi> </mi> <mi>c</mi> <mi>o</mi> <mi>s</mi> <mi>&amp;alpha;</mi> <mo>+</mo> <mi>m</mi> <mi>g</mi> <mi>v</mi> <mi> </mi> <mi>sin</mi> <mi>&amp;alpha;</mi> <mo>+</mo> <mfrac> <mn>1</mn> <mn>2</mn> </mfrac> <msub> <mi>&amp;rho;</mi> <mi>&amp;alpha;</mi> </msub> <msub> <mi>C</mi> <mi>D</mi> </msub> <msub> <mi>A</mi> <mi>f</mi> </msub> <msup> <mi>v</mi> <mn>3</mn> </msup> <mo>)</mo> </mrow> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>3</mn> <mo>)</mo> </mrow> </mrow>
    Wherein：η represents transmission system efficiency；δ1Represent the rotational inertia coefficient of wheel；δ2Represent and the relevant rotation of power set The transmission inertia coefficient of component；i0For the gearratio of final gear；igFor the gearratio of transmission device；i0igFor total transmission Than；M is vehicular gross combined weight (kg)；tαFor desired acceleration time (s)；vfFinal speed (m/s) after accelerating for vehicle；vbFor Corresponding to the speed (m/s) of motor base speed；G is acceleration of gravity；frFor the coefficient of rolling resistance of tire；V is t moment automobile Speed；ραFor atmospheric density；CDFor coefficient of air resistance；AfFor vehicle front face area (m2)；vmaxFor max. speed (m/s)；V is Speed during climbing；α is uphill angle.
  3. 3. fuel cell electric vehicle electric power coupling drive system according to claim 1, it is characterised in that：The combustion Expect the rated power P of battery systemfMore than Pt2And Pt3。
  4. 4. fuel cell electric vehicle electric power coupling drive system according to claim 1, it is characterised in that：Fuel cell The boosting inverter that system uses is level-one formula voltage conversion circuit.
  5. 5. fuel cell electric vehicle electric power coupling drive system according to claim 1, it is characterised in that：The peak Value power supply includes super capacitor or storage battery or super capacitor and storage battery.
  6. 6. fuel cell electric vehicle electric power coupling drive system according to claim 1, it is characterised in that：The biography The gearratio of dynamic system is located at maximum transmission ratio formula (4) imaxValue and fastest ratio formula (5) iminValue between：
    <mrow> <msub> <mi>i</mi> <mrow> <mi>m</mi> <mi>a</mi> <mi>x</mi> </mrow> </msub> <mo>=</mo> <mfrac> <mrow> <msub> <mi>&amp;pi;n</mi> <mrow> <mi>m</mi> <mi>a</mi> <mi>x</mi> </mrow> </msub> <mi>r</mi> </mrow> <mrow> <mn>30</mn> <msub> <mi>v</mi> <mrow> <mi>m</mi> <mi>a</mi> <mi>x</mi> </mrow> </msub> </mrow> </mfrac> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>4</mn> <mo>)</mo> </mrow> </mrow>
    <mrow> <msub> <mi>i</mi> <mi>min</mi> </msub> <mo>=</mo> <mfrac> <mi>r</mi> <mrow> <msub> <mi>&amp;eta;T</mi> <mrow> <mi>m</mi> <mi>a</mi> <mi>x</mi> </mrow> </msub> </mrow> </mfrac> <mrow> <mo>(</mo> <msub> <mi>mgf</mi> <mi>r</mi> </msub> <msub> <mi>cos&amp;alpha;</mi> <mrow> <mi>m</mi> <mi>a</mi> <mi>x</mi> </mrow> </msub> <mo>+</mo> <mi>m</mi> <mi>g</mi> <mi> </mi> <msub> <mi>sin&amp;alpha;</mi> <mrow> <mi>m</mi> <mi>a</mi> <mi>x</mi> </mrow> </msub> <mo>+</mo> <mfrac> <mn>1</mn> <mn>2</mn> </mfrac> <msub> <mi>&amp;rho;</mi> <mi>&amp;alpha;</mi> </msub> <msub> <mi>C</mi> <mi>D</mi> </msub> <msub> <mi>A</mi> <mi>f</mi> </msub> <msup> <mi>V</mi> <mn>2</mn> </msup> <mo>)</mo> </mrow> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>5</mn> <mo>)</mo> </mrow> </mrow>
    Wherein：nmaxFor motor maximum speed (r/min)；R is tire rolling radius (m)；vmaxFor max. speed (m/s)；TmaxFor Motor torque capacity (Nm)；αmaxFor maximum ramp angle.
  7. A kind of 7. control method of fuel cell electric vehicle electric power coupling drive system, it is characterised in that：Including procedure below：
    Step (1) subtracts braking instruction power according to traction command power, and control instruction power is calculated, judges control instruction Whether power is less than 0, is braked if setting up, invalid to draw；
    Step (2) judges whether control instruction power is more than the rated power of fuel cell system：By fuel cell if setting up Power of the rated power of system as fuel cell system, and subtracted by the PPS traction powers provided equal to control instruction power Remove the power of fuel cell system；PPS chargings or traction if invalid；
    Step (3) judges whether control instruction power is less than or equal to the rated power of fuel cell system：Judge PPS if setting up Energy grade whether be less than PPS maximum storage energy；Judge the energy grade of PPS whether more than PPS's if invalid Minimum storage energy；
    Step (4) is not less than the maximum storage energy of PPS when the energy grade of PPS, then the power of fuel cell is 0, and PPS The traction power of offer is equal to control instruction power；When minimum storage energy of the energy grade of PPS more than PPS, then fuel is electric The power in pond command power, and the power of PPS is 0 in order to control；
    Step (5) is when maximum storage energy of the energy grade of PPS less than PPS or minimum storage energy less than PPS, then right PPS charges：The power of fuel cell is equal to the rated power of fuel cell；The charge power of PPS is equal to the power of fuel cell Subtract control instruction power.
CN201711309550.1A 2017-12-11 2017-12-11 A kind of fuel cell electric vehicle electric power coupling drive system and its control method Withdrawn CN108001275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711309550.1A CN108001275A (en) 2017-12-11 2017-12-11 A kind of fuel cell electric vehicle electric power coupling drive system and its control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711309550.1A CN108001275A (en) 2017-12-11 2017-12-11 A kind of fuel cell electric vehicle electric power coupling drive system and its control method

Publications (1)

Publication Number Publication Date
CN108001275A true CN108001275A (en) 2018-05-08

Family

ID=62058198

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711309550.1A Withdrawn CN108001275A (en) 2017-12-11 2017-12-11 A kind of fuel cell electric vehicle electric power coupling drive system and its control method

Country Status (1)

Country Link
CN (1) CN108001275A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109334476A (en) * 2018-09-29 2019-02-15 潍柴动力股份有限公司 A kind of new fuel cell automotive control system and control method
CN110457639A (en) * 2019-07-26 2019-11-15 武汉格罗夫氢能汽车有限公司 A kind of stack system matching process of hydrogen fuel cell electric vehicle
CN111204225A (en) * 2020-01-16 2020-05-29 宁波市江北九方和荣电气有限公司 Locomotive capacitor on-line detection and monitoring device
CN112046335A (en) * 2020-09-09 2020-12-08 北京航空航天大学 Method for calculating remaining driving mileage of electric automobile based on driving energy consumption model
CN112677827A (en) * 2021-01-22 2021-04-20 中汽创智科技有限公司 Method, system, device and medium for predicting power output of hydrogen-fueled commercial vehicle
CN113022383A (en) * 2021-05-06 2021-06-25 潍柴动力股份有限公司 Energy distribution method, device and equipment of hydrogen fuel cell system
CN114695928A (en) * 2020-12-30 2022-07-01 丰田自动车株式会社 Method for controlling output power of FCV fuel cell

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102700427A (en) * 2012-06-01 2012-10-03 武汉理工大学 Vehicle-mounted fuel cell and storage cell directly paralleled power system with super capacitor
CN103568868A (en) * 2013-11-04 2014-02-12 浙江大学 Power matching method applicable to electric vehicle
WO2014052784A1 (en) * 2012-09-28 2014-04-03 Fuelcell Energy, Inc. Flame stabilized mixer-eductor-oxidizer for high temperature fuel cells
CN105083050A (en) * 2015-09-23 2015-11-25 中国人民解放军装甲兵技术学院 Hybrid fuel cell energy storage device for electric vehicle and control method thereof
CN106515467A (en) * 2016-11-22 2017-03-22 中车株洲电力机车有限公司 Vehicle, energy device employing aluminum air battery and supercapacitor and control method of energy device
CN107089164A (en) * 2017-04-25 2017-08-25 安徽江淮汽车集团股份有限公司 Pure electric vehicle power assembly system matching process

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102700427A (en) * 2012-06-01 2012-10-03 武汉理工大学 Vehicle-mounted fuel cell and storage cell directly paralleled power system with super capacitor
WO2014052784A1 (en) * 2012-09-28 2014-04-03 Fuelcell Energy, Inc. Flame stabilized mixer-eductor-oxidizer for high temperature fuel cells
CN103568868A (en) * 2013-11-04 2014-02-12 浙江大学 Power matching method applicable to electric vehicle
CN105083050A (en) * 2015-09-23 2015-11-25 中国人民解放军装甲兵技术学院 Hybrid fuel cell energy storage device for electric vehicle and control method thereof
CN106515467A (en) * 2016-11-22 2017-03-22 中车株洲电力机车有限公司 Vehicle, energy device employing aluminum air battery and supercapacitor and control method of energy device
CN107089164A (en) * 2017-04-25 2017-08-25 安徽江淮汽车集团股份有限公司 Pure electric vehicle power assembly system matching process

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109334476A (en) * 2018-09-29 2019-02-15 潍柴动力股份有限公司 A kind of new fuel cell automotive control system and control method
CN109334476B (en) * 2018-09-29 2020-09-29 潍柴动力股份有限公司 Fuel cell automobile control system and control method
CN110457639A (en) * 2019-07-26 2019-11-15 武汉格罗夫氢能汽车有限公司 A kind of stack system matching process of hydrogen fuel cell electric vehicle
CN111204225A (en) * 2020-01-16 2020-05-29 宁波市江北九方和荣电气有限公司 Locomotive capacitor on-line detection and monitoring device
CN112046335A (en) * 2020-09-09 2020-12-08 北京航空航天大学 Method for calculating remaining driving mileage of electric automobile based on driving energy consumption model
CN114695928A (en) * 2020-12-30 2022-07-01 丰田自动车株式会社 Method for controlling output power of FCV fuel cell
CN112677827A (en) * 2021-01-22 2021-04-20 中汽创智科技有限公司 Method, system, device and medium for predicting power output of hydrogen-fueled commercial vehicle
CN112677827B (en) * 2021-01-22 2023-01-03 中汽创智科技有限公司 Method, system, device and medium for predicting power output of hydrogen-fueled commercial vehicle
CN113022383A (en) * 2021-05-06 2021-06-25 潍柴动力股份有限公司 Energy distribution method, device and equipment of hydrogen fuel cell system

Similar Documents

Publication Publication Date Title
CN108001275A (en) A kind of fuel cell electric vehicle electric power coupling drive system and its control method
Fujimoto et al. Development of Wireless In-wheel Motors for Dynamic Charging: From 2nd to 3rd generation
CN202498998U (en) Fuel cell hybrid energy management control system
CN103692925B (en) The economic driving model control method of a kind of electronlmobil
CN104015626A (en) Hybrid power system for electric car
CN101708694A (en) Control system of mileage increaser of electric vehicle and control method thereof
CN103631149A (en) Extended-range electric vehicle mileage simulation system and simulation method thereof
CN102358207B (en) Method for determining auxiliary electricity generation power of electric vehicle
CN202080273U (en) Energy management system of battery electric vehicle
CN104553838B (en) Propulsion system
CN103723050B (en) A kind of energy control method of hybrid power system electric rail vehicle
CN104626958A (en) High-power solar intelligent hybrid power automobile
CN105291803A (en) Oil-electricity hybrid power system and engineering vehicle
CN109649371A (en) A kind of hybrid power heavy motor truck power control system with super capacitor
Qi Fuzzy control strategy of pure electric vehicle based on driving intention recognition
CN206202005U (en) A kind of dynamical system for pure electric vehicle
Tsukahara et al. A study on methods to design and select energy storage devices for Fuel Cell hybrid powered railway vehicles
CN108068634A (en) A kind of hybrid power DC drive railcar
Shah et al. An energy management system for a battery ultracapacitor hybrid electric vehicle
Zhe et al. A control strategy of regenerative braking system for intelligent vehicle
McDonough et al. Application of multi-port power electronic interface for contactless transfer of energy in automotive applications
Chih-Ming et al. System integration and power flow management for the engine-generator operation of a range-extended electric vehicle
CN205130900U (en) Oil -electricity hybrid vehicle system and engineering vehicle
CN207416591U (en) A kind of electric motor car energy automatic control system
CN204472537U (en) A kind of big-power solar intelligent mixed power automobile

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20180508

WW01 Invention patent application withdrawn after publication