CN108215813A - A kind of distance increasing unit control system and control method - Google Patents
A kind of distance increasing unit control system and control method Download PDFInfo
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- CN108215813A CN108215813A CN201810036013.2A CN201810036013A CN108215813A CN 108215813 A CN108215813 A CN 108215813A CN 201810036013 A CN201810036013 A CN 201810036013A CN 108215813 A CN108215813 A CN 108215813A
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- 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
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0666—Engine torque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
-
- 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
- Y02T10/62—Hybrid vehicles
-
- 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
Abstract
The invention discloses a kind of distance increasing unit control system and control methods.In control system, the output terminal of generated output demand module is connected to the input terminal of state management module and the input terminal of engine input power demand module；The input terminal of output terminal connection engine control module of state management module and the input terminal of alternator control modules；The output terminal of engine output demand module is connected to the input terminal of engine control module and the input terminal of alternator control modules；The output terminal of distance increasing unit operating mode selecting module is connected to the input terminal of engine control module and the input terminal of alternator control modules.The present invention can receive and respond various forms of power generation requests, while flexibly increase and delete the submodule in vehicle energy request queue, extension range extender of electric vehicle application scenario according to the requirement of Vehicular system.
Description
Technical field
The present invention relates to control system and control method, especially a kind of distance increasing unit control system and control method.
Background technology
Chinese patent CN201710535437 provides a kind of range extender of electric vehicle optimal control method of knowing clearly.The patent
Purpose is：Design a kind of multisection type power follow-up control method of suitable city stroke-increasing electric automobile operation.The patent uses
Technological means and reach effect and be：The size of the rotating speed power according to demand of engine is designed, in best fuel consumption curve
Permanent rotating speed operation is done in the upper N number of operating point of selection, and adjusts the torque of distance increasing unit generator, so that the real output of distance increasing unit
Value follows current power demand, while determines current needs value of the distance increasing unit under rest frame, by sampling multifrequency ratio
Resonant controller determines the drive signal of generator power switch, reaches the nonlinearity control for solving to increase journey electricity generation system
Problem.The deficiency of the patent and the reason is that：The engine speed point of selection is discrete operating point, and engine consumption cannot be each
Demand power point reaches optimum Working, once while demand power is more than the maximum power model corresponding to current rotating speed
It encloses, distance increasing unit operating point occurs and significantly switch, noise and vibration is caused to increase, while it is reliable to reduce the core components such as engine
The reduction of property.
A kind of control methods and system applied to distance increasing unit of Chinese patent CN201710183211.The purpose of the patent
It is：A kind of control method and system applied to distance increasing unit is provided, to solve when target travel mileage is uncertain, it is impossible to sentence
The problem of whether disconnected distance increasing unit needs to generate electricity in advance.The technological means and reach effect and be that the patent uses：Obtain extended-range electricity
Vehicle mileage, accumulator residue surplus, fuel remaining and the cell health state of motor-car, by with it is different degrees of
Threshold value be compared, to determine whether in advance carry out distance increasing unit power generation.Generated output is according to the demand power and vehicle of storage
Speed, the table of comparisons between throttle depth obtain.The deficiency of the patent and the reason is that：Demand power is only deep with speed and throttle
Degree is related, can cause the frequent charge and discharge of battery system, reduces battery system service life, battery system cannot be protected effectively
Shield, while the patent fails to provide how to control actual power response demand power power.
Chinese patent CN201610404640 provides extended-range electric vehicle and its energy management control method and device.
The purpose of the patent is：It is proposed a kind of energy management control method of extended-range electric vehicle, this method is carrying out energy management
Considered during control influence the target power of distance increasing unit, driving motor target power many factors, so as to make distance increasing unit and
The control of driving motor is more accurate, efficient.The technological means and reach effect and be that the patent uses：Obtain vehicle traveling demand
Power；The target power of the demand power calculating middle driving motor of extended-range electric vehicle, and root are travelled according to the vehicle
The driving motor is controlled according to the target power of the driving motor；Obtain the battery mesh of the extended-range electric vehicle
Power and system loss power are marked, and according to the battery target power, the system loss power and the driving motor
Target power calculates vehicle target power；According to the damage of the vehicle target power and the middle distance increasing unit of the extended-range electric vehicle
Lose the target power of power calculation distance increasing unit；According to the performance number of the middle power of battery adjuster of the extended-range electric vehicle to institute
The target power for stating distance increasing unit is modified to obtain distance increasing unit target power correction value；And according to the distance increasing unit target work(
Rate correction value controls the distance increasing unit.The deficiency of the patent and the reason is that：The distance increasing unit control being related to is only capable of responding
Power demand, and other such as battery SOCs, a variety of demand models of charge requirement electric current cannot be responded, while do not illustrate how
Realize the rotating speed of target and torque of distance increasing unit.
In conclusion main in the prior art, also there are own shortcomings：
1st, as electric vehicle system application scenario is more and more extensive, work operating mode becomes increasingly complex, and Full Vehicle System is to increasing
The power demand form of journey device is also more and more diversified, and increasing during various forms of power requests could not be provided in existing technology
Journey device control system processing strategy.
2nd, engine and generator are worked by mechanical connection in range extender system, could not be provided in existing technology
The decoupling control of engine and generator speed and torque.
3rd, the prior art obtains distance increasing unit working speed and torque only according to engine consumption characteristic, and failing synthesis has
Effect considers engine emission, noise and generator efficiency characteristic.
4th, there is overload, rotating speed response not in time etc. under operating modes without providing in distance increasing unit power generation process in the prior art
Protect treatment measures.
Invention content
In view of the deficiencies of the prior art, the present invention proposes a kind of distance increasing unit control system and control method.
Technical scheme is as follows：
A kind of distance increasing unit control system is needed including generated output demand module, state management module, engine output
Modulus block, distance increasing unit operating mode selecting module, engine control module and alternator control modules；Generated output demand mould
The output terminal of block is connected to the input terminal of state management module and the input terminal of engine input power demand module；Condition managing
The input terminal of output terminal connection engine control module of module and the input terminal of alternator control modules；Engine output
The output terminal of demand module is connected to the input terminal of engine control module and the input terminal of alternator control modules；Distance increasing unit work
The output terminal of operation mode selecting module is connected to the input terminal of engine control module and the input terminal of alternator control modules.
A kind of distance increasing unit control method, including：
Generated output demand module receives the energy requirement of vehicle, and range extender system, which is calculated, by conversion exports electric work
Rate requirements；And range extender system electromotive power output requirements are input to state management module and engine output demand
Module；
State management module is defeated according to distance increasing unit control system input signal, full-vehicle control request signal and range extender system
Go out electrical power requirements and determine current distance increasing unit working condition；And distance increasing unit working condition is input to engine control module and hair
Motor control module；
Engine output demand module is true according to range extender system electromotive power output demand and generator operation efficiency
Determine engine output demand；And engine work is determined according to engine output demand and engine best effort path
The rotating speed of target and target torque of work；And the rotating speed of target of engine work and target torque are input to engine control module
And alternator control modules；
Distance increasing unit operating mode selecting module sets distance increasing unit operating mode, and distance increasing unit operating mode is input to and is started
Machine control module and alternator control modules；
The rotating speed of target and target torque, start that engine control module works according to distance increasing unit working condition, engine
Machine operating mode determines that engine target instructs；
Alternator control modules are according to distance increasing unit working condition, the rotating speed of target of engine work and target torque, power generation
Machine operating mode determines generator target instruction target word.
Its further technical solution is that generated output demand module includes vehicle energy request queue；Vehicle energy please
Queue is asked to include Direct Power request submodule, electric current request submodule and battery state of charge request submodule；
The electric current of demand is multiplied by electric current request submodule with Current bus voltage is converted into range extender system output electric work
Rate requirements；
Different battery state of charge sections is set, and sets and different batteries in battery state of charge request submodule
The corresponding range extender system electromotive power output requirements in state of charge section；When practical battery state of charge is in different electricity
During the state of charge section of pond, corresponding requests receive corresponding distance increasing unit generated output requirements.
Its further technical solution is, distance increasing unit working condition includes powering on, is ready, starting, idling, power generation,
It shuts down, lower electricity.
Its further technical solution is that engine output demand module includes feedforward control module, feedback control
Module and adder；
Engine output demand module calculate engine output requirements specific method be：
Range extender system electromotive power output requirements are multiplied by feedforward control module with generator operation efficiency to be started
Machine output power demand feedforward value；
Feedback control module is closed according to the difference of actual generation power and range extender system electromotive power output requirements
Ring is adjusted, and obtains engine output demand feedback value；
Engine output demand feedforward value is added to obtain hair with engine output demand feedback value by adder
Motivation output power requirements.
Its further technical solution is that engine output demand module is looked into according to engine output requirements
The engine best effort path being stored in distance increasing unit control system is ask, obtains the rotating speed of target and target torque of engine.
Its further technical solution is that distance increasing unit operating mode includes：Engine is in torque control mode and power generation
Machine is in rotating speed control mode；Engine is in rotating speed control mode and generator is in torque control mode；Engine is in
Torque control mode and generator is in torque control mode.
Its further technical solution is：When the working condition of distance increasing unit is generating state, engine control module according to
Engine working mode determines engine work order：Engine is in rotating speed control mode, and the target of engine work is turned
Speed is sent to engine controller；When engine is in torque control mode and generator is in rotating speed control mode, will send out
The target torque of motivation work is sent to engine controller；When engine is in torque control mode and generator is in torque
During control model, the rotating speed of target closed loop to be worked according to practical engine speed and engine adjusts engine instruction demand torsion
Square is simultaneously sent to engine controller.
Its further technical solution is：When the working condition of distance increasing unit is starting state, alternator control modules are sent
Torque command is dragged to engine controller, generator dragging engine is completed distance increasing unit and started；When the working condition of distance increasing unit
For generating state, alternator control modules determine that generator operation instructs according to generator operation mode：It is turned round when generator is in
During square control model, the target torque that engine works is sent to engine controller；When generator is in rotating speed control mould
During formula, the rotating speed of target that engine works is sent to engine controller.
Its further technical solution is that alternator control modules are provided with triple torque protections：First, generator torque
The change step of instruction is the rotating speed of target of engine and the function of the difference of actual speed, when the rotating speed of target and reality of engine
The difference of border rotating speed increases, and generator torque instruction increases step-length and is set as zero；Secondly, according to the rotating speed of target and reality of engine
The difference of border rotating speed corrects generator torque instruction, and when the rotating speed of target of engine and the difference of actual speed increase, reduction is sent out
Motor torque instructs；Finally, when engine load rate is more than threshold value, the corresponding hair of switching present engine output power requirements
Motivation operating point.
The method have the benefit that：
1st, can according to the requirement of Vehicular system, receive and respond it is various forms of power generation request, while flexibly increase and
Delete the submodule in vehicle energy request queue, extension range extender of electric vehicle application scenario.
2nd, engine output mechanical power and generator electromotive power output are linearly decoupled, improves control accuracy；
3rd, according to engine consumption, operating noise, discharge and power universal characteristic data and generator efficiency characteristic quantity
Calculating is optimized according to engine operating path so that distance increasing unit is operated in oil consumption optimum condition；
4th, triple protection is carried out to distance increasing unit according to engine speed and rate of load condensate, makes the work of distance increasing unit total system can
It leans on.
Description of the drawings
Fig. 1 is extended-range electric vehicle power system architecture schematic diagram.
Fig. 2 is distance increasing unit control system architecture schematic diagram.
Fig. 3 is vehicle energy request queue schematic diagram.
Fig. 4 is that engine output requirements calculate schematic diagram.
Fig. 5 is engine best effort path schematic diagram.
Fig. 6 is engine control schematic diagram.
Fig. 7 is generator control schematic diagram.
Specific embodiment
Fig. 1 is extended-range electric vehicle power system architecture schematic diagram.There is two-way CAN network in figure.Specifically include the first CAN
Bus and the second CAN bus.Further include distance increasing unit controller RCU, the power battery management system being connected in the first CAN bus
BMS, drive motor controller MCU and entire car controller VCU.Further include engine controller ECU and engine controller
GCU.Distance increasing unit controller leads to the engine controller ECU and engine controller that RCU crosses the second CAN bus connection distance increasing unit
GCU。
Engine controller ECU connections control engine, engine controller GCU connections control generator, driving motor
Controller MCU connections control driving motor.Power battery is connected to generator by inverter.Power battery is connected by inverter
It is connected to driving motor.
Distance increasing unit is electrically connected power battery and driving motor.Distance increasing unit controller RCU receives entire car controller VCU and sends
Energy request command, and pass through the energy that the engine for controlling distance increasing unit and generator realize vehicle demand.
Fig. 2 is distance increasing unit control system architecture schematic diagram.As shown in Fig. 2, distance increasing unit control system is needed including generated output
Modulus block, state management module, engine output demand module, distance increasing unit operating mode selecting module, engine control
Module and alternator control modules.The output terminal of generated output demand module is connected to the input terminal and hair of state management module
The input terminal of motivation input power demand module.State management module output terminal connection engine control module input terminal and
The input terminal of alternator control modules.The output terminal of engine output demand module is connected to the defeated of engine control module
Enter the input terminal of end and alternator control modules.The output terminal of distance increasing unit operating mode selecting module is connected to engine control mould
The input terminal of block and the input terminal of alternator control modules.
With reference to Fig. 1, the distance increasing unit control system in Fig. 2 controls the extended-range electric vehicle dynamical system in Fig. 1.Hair
Motivation control module is used to control engine controller ECU；Alternator control modules are used to control engine controller GCU；Hair
Electrical power requirements module receives the vehicle energy requirement in entire car controller VCU, while passes through BMS pairs of power battery management system
The state of charge of power battery is managed.
The invention also discloses distance increasing unit control methods, are specifically divided into following step：
1) generated output demand module receives the energy requirement of vehicle, and range extender system output electricity is calculated by conversion
Power demand values.And range extender system electromotive power output requirements are input to state management module and engine output need
Modulus block.
Specifically, generated output demand module includes vehicle energy request queue, for receiving the energy requirement of vehicle.Figure
3 be vehicle energy request queue schematic diagram.As shown in figure 3, the request queue of vehicle energy, which includes Direct Power, asks submodule
101st, electric current request submodule 102 and battery state of charge request submodule 103.Further include selector 104 and selecting switch
105。
Electric current request submodule 102 receives the demand current of entire car controller first, then by demand current and current height
Pressure bus voltage multiplication is converted into range extender system electromotive power output requirements.
Different power battery state of charge sections is set in battery state of charge request submodule 103, and set with not
The same corresponding range extender system electromotive power output requirements in battery state of charge section.When practical battery state of charge is in
It is corresponding to export corresponding range extender system electromotive power output requirements during different battery state of charge section.
The submodule currently needed is activated in selector 104 by selecting switch 105, exports current range extender system
Electromotive power output requirements.
2) state management module is according to distance increasing unit control system input signal, such as engine speed, temperature, motor speed,
Temperature etc.；Full-vehicle control request signal, such as demand power, electric current；And range extender system electromotive power output demand determines to work as
Preceding distance increasing unit working condition.And distance increasing unit working condition is input to engine control module and alternator control modules.
Specifically, distance increasing unit working condition includes powering on, is ready, starting, idling, power generation, shutdown, lower electricity etc..
3) engine output demand module is according to range extender system electromotive power output demand and generator operation efficiency
Determine engine output requirements.And it determines to send out according to engine output requirements and engine best effort path
The rotating speed of target and target torque of motivation work.And the rotating speed of target of engine work and target torque are input to engine control
Molding block and alternator control modules.
Fig. 4 is engine output demand value calculating method schematic diagram.As shown in figure 4, engine output demand
Module includes feedforward control module 201, feedback control module 202, adder 203 and engine working point computing module 204.
Engine output demand module calculate engine output requirements specific method be：
The range extender system electromotive power output requirements that generated output demand module is calculated feedforward control module 201
It is multiplied to obtain engine output demand feedforward value with generator operation efficiency.
Generator operation efficiency is the rotating speed of generator and the function of torque, and it is repaiied according to generator-temperature detection
Just.
Feedback control module 202 is carried out according to actual generation power and the difference of range extender system electromotive power output requirements
Closed-loop control is adjusted, and obtains engine output demand feedback value.Specifically, pid control algorithm may be used in closed-loop control.
Engine output demand feedforward value is added with engine output demand feedback value by adder 203,
Obtain engine output requirements.
In engine working point computing module 204, it is previously stored with engine best effort path data MAP.Increasing
In journey device control system, best effort path data MAP can be inquired by engine output requirements, you can sent out
The rotating speed of target and target torque of motivation work.
Fig. 5 is engine best effort path schematic diagram.Engine best effort path be using optimum oil consumption as target, with
The corresponding engine of one group of engine output that engine operating noise, discharge are obtained for constraints progress optimizing
Working speed and torque engine best effort path data MAP.
4) distance increasing unit operating mode selecting module setting distance increasing unit operating mode, and distance increasing unit operating mode is input to hair
Motivation control module and alternator control modules.
Specifically, distance increasing unit operating mode includes：Engine is in torque control mode and generator is in rotating speed control
Pattern；Engine is in rotating speed control mode and generator is in torque control mode；Engine be in torque control mode and
Generator is in torque control mode.
5) engine control module works according to engine rotating speed of target, distance increasing unit working condition, starts at target torque
Machine operating mode determines that engine target instructs.
Fig. 6 is engine control schematic diagram.Engine control module 301 works according to distance increasing unit working condition, engine
Pattern, the rotating speed of target of engine, target torque calculate engine work order.
When the working condition of distance increasing unit is generating state, engine control module determines to start according to engine working mode
Machine work order：When engine is in rotating speed control mode and generator is in torque control mode, by engine work
Rotating speed of target is sent to engine controller；When engine is in torque control mode and generator is in rotating speed control mode
When, the target torque that engine works is sent to engine controller；When engine is in torque control mode and generator
During in torque control mode, the rotating speed of target closed loop adjusting engine to be worked according to practical engine speed and engine refers to
Show demand torque and be sent to engine controller.
Specifically, according to the communication protocol between distance increasing unit control system and engine controller, engine work order
It can include operating mode 302, Request Priority 303, rotating speed of target 304 and target torque 305.
6) alternator control modules work according to engine rotating speed of target and target torque, distance increasing unit working condition and hair
Electrical machine working mode determines generator target instruction target word.
Fig. 7 is generator control schematic diagram.Alternator control modules 401 are according to distance increasing unit working condition, generator operation
Pattern, the rotating speed of target of engine, target torque calculate generator operation instruction.
When the working condition of distance increasing unit is starting state, alternator control modules send dragging torque command and give generator control
Device processed, generator dragging engine are completed distance increasing unit and are started；When the working condition of distance increasing unit is generating state, generator control mould
Root tuber determines that generator operation instructs according to generator operation mode：It is turned round when engine is in rotating speed control mode and generator and is in
Square control model or when engine is in torque control mode and generator is in torque control mode, by engine work
The target torque of work is sent to engine controller；When engine is in torque control mode and generator is in rotating speed control mould
During formula, the rotating speed of target that engine works is sent to engine controller.
Specifically, according to the communication protocol between distance increasing unit control system and engine controller, generator operation instruction
Including operating mode 402, Request Priority 403, rotating speed of target 404 and target torque 405.
Alternator control modules are additionally provided with triple torque protections：First, the change step of electric generator target torque is hair
The rotating speed of target of motivation and the function of actual speed difference, when the two difference increases, the increase step-length of generator torque instruction is set
It is set to zero；Secondly, generator torque instruction is corrected according to the rotating speed of target of engine and actual speed difference, when the two difference compared with
Greatly, generator torque instruction is reduced, prevents engine from killing flame-out；Finally, when engine load rate is more than certain threshold value, switching
The corresponding engine working point of present engine output power requirements makes engine be operated in comfortable reliable operating mode.Start
Machine operating point is the point corresponding to function curve in Fig. 5.
What has been described above is only a preferred embodiment of the present invention, and the present invention is not limited to above example.It is appreciated that this
The other improvements and change that field technology personnel directly export or associate without departing from the spirit and concept in the present invention
Change, be considered as being included within protection scope of the present invention.
Claims (10)
1. a kind of distance increasing unit control system, which is characterized in that including generated output demand module, state management module, engine
Output power demand module, distance increasing unit operating mode selecting module, engine control module and alternator control modules；Power generation
The output terminal of power demand module is connected to the input terminal of state management module and the input of engine input power demand module
End；The input terminal of output terminal connection engine control module of state management module and the input terminal of alternator control modules；Hair
The output terminal of motivation output power demand module be connected to engine control module input terminal and alternator control modules it is defeated
Enter end；The output terminal of distance increasing unit operating mode selecting module is connected to the input terminal of engine control module and generator control mould
The input terminal of block.
2. a kind of distance increasing unit control method, it is characterised in that including：
Generated output demand module receives the energy requirement of vehicle, and range extender system electromotive power output, which is calculated, by conversion needs
Evaluation；And range extender system electromotive power output requirements are input to state management module and engine output demand mould
Block；
State management module exports electricity according to distance increasing unit control system input signal, full-vehicle control request signal and range extender system
Power demand determines current distance increasing unit working condition；And distance increasing unit working condition is input to engine control module and generator
Control module；
Engine output demand module determines to send out according to range extender system electromotive power output demand and generator operation efficiency
Motivation output power demand；And determine what engine worked according to engine output demand and engine best effort path
Rotating speed of target and target torque；And the rotating speed of target of engine work and target torque are input to engine control module and hair
Motor control module；
Distance increasing unit operating mode selecting module sets distance increasing unit operating mode, and distance increasing unit operating mode is input to engine control
Molding block and alternator control modules；
Engine control module is according to distance increasing unit working condition, the rotating speed of target and target torque, engine work of engine work
Operation mode determines that engine target instructs；
Alternator control modules are according to distance increasing unit working condition, the rotating speed of target and target torque, generator work of engine work
Operation mode determines generator target instruction target word.
3. distance increasing unit control method according to claim 2, which is characterized in that generated output demand module includes vehicle energy
Measure request queue；The request queue of vehicle energy includes Direct Power request submodule, electric current request submodule and battery charge shape
State asks submodule；
The electric current of demand is multiplied by electric current request submodule with Current bus voltage is converted into range extender system electromotive power output need
Evaluation；
Different battery state of charge sections is set, and sets and different battery charges in battery state of charge request submodule
The corresponding range extender system electromotive power output requirements of state interval；When practical battery state of charge is in different battery electricity
During lotus state interval, corresponding requests receive corresponding distance increasing unit generated output requirements.
4. distance increasing unit control method according to claim 2, which is characterized in that distance increasing unit working condition is including powering on, standard
Standby ready, starting, idling, power generation, shutdown, lower electricity.
5. distance increasing unit control method according to claim 2, which is characterized in that engine output demand module includes
Feedforward control module, feedback control module and adder；
Engine output demand module calculate engine output requirements specific method be：
Range extender system electromotive power output requirements are multiplied to obtain engine with generator operation efficiency defeated by feedforward control module
Go out power demand feedforward value；
Feedback control module carries out closed loop tune according to actual generation power and the difference of range extender system electromotive power output requirements
Section, obtains engine output demand feedback value；
Engine output demand feedforward value is added to obtain engine with engine output demand feedback value by adder
Output power requirements.
6. distance increasing unit control method according to claim 2, which is characterized in that engine output demand module according to
The inquiry of engine output requirements is stored in the engine best effort path in distance increasing unit control system, obtains engine
Rotating speed of target and target torque.
7. distance increasing unit control method according to claim 2, which is characterized in that distance increasing unit operating mode includes：Engine
Rotating speed control mode is in torque control mode and generator；Engine is in rotating speed control mode and generator is in and turns round
Square control model；Engine is in torque control mode and generator is in torque control mode.
8. distance increasing unit control method according to claim 2, it is characterised in that；When the working condition of distance increasing unit is power generation shape
State, engine control module determine engine work order according to engine working mode：Engine is in rotating speed control mode,
The rotating speed of target that engine works is sent to engine controller；When engine is in torque control mode and generator is in
During rotating speed control mode, the target torque that engine works is sent to engine controller；When engine is in moment of torsion control
Pattern and when generator is in torque control mode, the rotating speed of target closed loop to be worked according to practical engine speed and engine
It adjusts engine instruction demand torque and is sent to engine controller.
9. distance increasing unit control method according to claim 2, it is characterised in that：When the working condition of distance increasing unit is starts shape
State, alternator control modules send dragging torque command to engine controller, and generator dragging engine is completed distance increasing unit and risen
It is dynamic；When the working condition of distance increasing unit is generating state, alternator control modules determine generator work according to generator operation mode
It instructs：When generator is in torque control mode, the target torque that engine works is sent to engine controller；When
When generator is in rotating speed control mode, the rotating speed of target that engine works is sent to engine controller.
10. distance increasing unit control method according to claim 2, which is characterized in that alternator control modules are provided with triple
Torque protection：First, the change step of generator torque instruction is the rotating speed of target of engine and the letter of the difference of actual speed
Number, when the rotating speed of target of engine and the difference of actual speed increase, generator torque instruction increases step-length and is set as zero；Its
It is secondary, generator torque instruction is corrected according to the difference of the rotating speed of target of engine and actual speed, when the rotating speed of target of engine
It is increased with the difference of actual speed, reduces generator torque instruction；Finally, when engine load rate is more than threshold value, switching is current
The corresponding engine working point of engine output requirements.
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| CN109606347A (en) * | 2018-11-22 | 2019-04-12 | 宁波洁程汽车科技有限公司 | Charging unit engine control system and method based on distance increasing unit exploitation |
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| CN110562055A (en) * | 2019-09-16 | 2019-12-13 | 无锡市凯跃新能源汽车运营有限公司 | range extender for new energy automobile and control method |
| CN110549874A (en) * | 2019-09-29 | 2019-12-10 | 广西玉柴机器股份有限公司 | Cluster type generator set control system |
| CN110758125A (en) * | 2019-12-30 | 2020-02-07 | 宁波洁程汽车科技有限公司 | Control system and method for power quick response of range extender for electric automobile |
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