CN106671795A - Electric drive system and control method thereof - Google Patents
Electric drive system and control method thereof Download PDFInfo
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- CN106671795A CN106671795A CN201510771738.2A CN201510771738A CN106671795A CN 106671795 A CN106671795 A CN 106671795A CN 201510771738 A CN201510771738 A CN 201510771738A CN 106671795 A CN106671795 A CN 106671795A
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- current transformer
- electromotor
- electric drive
- drive system
- combustion engine
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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
- B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
- B60L50/13—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines using AC generators and AC motors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention provides an electric drive system and a control method thereof. The electric drive system comprises a power generator, a current transformer and an electric motor, wherein the power generator is connected with an internal combustion engine; the current transformer is connected with a storage battery; the electric motor is connected with a system to be driven; the current transformer is respectively connected with the power generator and the electric motor; the current transformer is used for driving the power generator and the electric motor to operate; the power generator is used for driving the internal combustion engine to start under the driving of the current transformer so that the internal combustion engine transmits power to the power generator after being started; and the electric motor is used for driving the system to be driven to start and operate under the driving of the current transformer. According to the electric drive system, technical problems that a drive device is easy to wear, the electric drive system is complicated to operate and requirements of the electric drive system on operators are high in the existing mechanical driving process are solved.
Description
Technical field
The present invention relates to a kind of drive system, more particularly to a kind of electric drive system for tractor and its
Control method.
Background technology
With the development of agricultural economy, farming operation mode is gradually made the transition from manual work to do mechanization operation.
Therefore, the demand of large-scale agricultural machinery equipment is gradually increased, traditional agricultural equipment, such as tractor, its biography
Dynamic system has mechanical type, fluid pressure type and hydraulic type etc., wherein, mechanical transmission system is most widely used.
At present, in mechanical transmission system, mainly include：Power take-off mechanism (such as diesel engine), passes
Dynamic clutch (including clutch), gear (including change speed gear box) and conversion Plane of rotation direction
Mechanism, while be aided with necessary coupling body and reducing gear (reduction box), during operation, diesel oil first
After the power output of machine, by pto to clutch, when clutch is combined, power Jing from
Clutch passes to change speed gear box, and during change speed gear box gearing in, power Jing change speed gear boxes pass to central driving shaft, then by
Reduction box of the centre power transmission shaft in left and right sides more than one-level or one-level passes to two driving wheels of left and right power.
However, in existing drive system, arranging between power output shaft to driving wheel and there is complexity
Machine driven system, including operation clutch, the switching frequent operation process such as gear and control brake,
When operator's misoperation, frequently flame-out, fuel oil is unrestrained easily to cause equipment heel and toe wear, diesel engine
The consequence such as take, and vehicle drive is complex, and the requirement to operator is higher.
The content of the invention
The present invention provides a kind of electric drive system and its control method, in solving existing machinery transmission process
Transmission device is easy to wear, complex operation and require higher technical problem to operator.
The present invention provides a kind of electric drive system, including：
Current transformer and be connected with system to be driven that the electromotor being connected with internal combustion engine is connected with accumulator
Motor, wherein, the current transformer is connected respectively with the electromotor and the motor；
The current transformer is used to drive the electromotor and the generator operation, the electromotor to be used for
The internal combustion engine start is driven under the driving of the current transformer, so that the internal combustion engine start is backward described
Motor transmits power, and the electromotor is used to drive the system to be driven under the driving of the current transformer
Startup optimization.
In the specific embodiment of the present invention, the current transformer includes：First current transformer, the second current transformer
With the 3rd current transformer, wherein, first current transformer is connected with the accumulator, second current transformer
It is connected with first current transformer, the 3rd current transformer and the electromotor respectively, the 3rd unsteady flow
Device is connected with first current transformer and the motor.
In the specific embodiment of the present invention, first current transformer is direct current DC-DC current transformers.
In the specific embodiment of the present invention, second current transformer and the 3rd current transformer are by two
Insulated gate bipolar transistor IGBT is composed in parallel.
It is between the electromotor and second current transformer and described in the specific embodiment of the present invention
It is connected with signal cable by main cables between motor and the 3rd current transformer, wherein the signal
Cable includes velocity transducer output signal line and temperature sensor output signal line.
The present invention specific embodiment in, the electromotor be three phase induction generator, the motor
For threephase asynchronous.
The present invention provides a kind of control method of electric drive system, and the electric drive system is any of the above-described institute
The electric drive system stated, the control method of the electric drive system includes：
Current transformer drives electromotor startup optimization to drive internal combustion engine start according to enabled instruction；
After the internal combustion engine start runs, the electromotor is generated electricity under the drive of the internal combustion engine
And output AC electricity；
The current transformer is unidirectional current according to the AC conversion that rate control instruction exports in the electromotor
With drive motor startup optimization.
In the specific embodiment of the present invention, methods described also includes：The current transformer is by the electromotor
The alternating current of output is converted and blood pressure lowering is processed for accumulator and is charged.
In the specific embodiment of the present invention, methods described also includes：The current transformer is according to power request
The generated output of the instruction control electromotor.
The present invention provides a kind of electric drive system, is connected with internal combustion engine by electromotor, current transformer and generating
Machine, accumulator are connected with motor, and motor is connected with system to be driven, and so, current transformer first will
The voltage of accumulator carries out boosting and processes to drive the operation of electromotor startup optimization, electromotor to drive internal combustion
Machine startup optimization, internal combustion engine start runs backward electromotor and carries out power output so that electromotor carries out sending out
Electricity, current transformer is converted electronic to drive according to external speed control instruction to the voltage that electromotor is exported
Machine runs, and the operation of motor drives system to be driven to be run, during operation, the equipment speed of service
Control only need to by control motor rotating speed be capable of achieving, and the rotating speed of motor by with motor
Connected pedal is controlled, so, gearing is eliminated in electric drive system and is passed on Gong in system frequently
Clutch-gearshift process, operate it is simpler, while the two main operating portions of electromotor and motor
There is no abrasion between part, so as to reduce mechanical wear and impact, improve transmission efficiency, therefore, this
Invention provide electric drive system, solve transmission device in existing machinery transmission process it is easy to wear, operation
Complicated and higher to operator's requirement technical problem.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Apply the accompanying drawing to be used needed for example or description of the prior art to be briefly described, it should be apparent that, under
Accompanying drawing in the description of face is some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative labor, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is the structural representation of electric drive system of the present invention；
Fig. 2 is the another structural representation of electric drive system of the present invention；
Fig. 3 is the attachment structure schematic diagram of current transformer in electric drive system of the present invention；
Fig. 4 is the connection diagram of current transformer and electromotor in electric drive system of the present invention；
Fig. 5 is the connection diagram of current transformer and motor in electric drive system of the present invention；
Fig. 6 is the schematic flow sheet of the control method of electric drive system of the present invention；
Fig. 7 is the another schematic flow sheet of the control method of electric drive system of the present invention.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with this
Accompanying drawing in bright embodiment, is clearly and completely described to the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment for obtaining, belongs to the scope of protection of the invention.
The input energy that the electric drive system that the present embodiment is provided passes through generator control system, by electronic
The operation of machine driving equipment (such as tractor), eliminates clutch-gearshift in conventional mechanical transmission system
Process, operates simpler.
Fig. 1 is the structural representation of electric drive system of the present invention, as shown in figure 1, electric drive system includes：
The current transformer 50 that the electromotor 20 being connected with internal combustion engine 10 is connected with accumulator 60, with system to be driven
40 connected motor 30, wherein, current transformer 50 is connected respectively with electromotor 20 and motor 30,
Current transformer 50 controls the operation of electromotor 20 and motor 30 simultaneously, and electromotor 20 is used in current transformer
Drive internal combustion engine 10 starts under 50 driving, so that internal combustion engine 10 starts the transmission of backward electromotor 20 and moves
Power, i.e. electromotor 20 are initially used for driving internal combustion engine 10 to start, after internal combustion engine 10 starts, internal combustion engine
10 can export power, and the output power shaft of internal combustion engine 10 is connected with electromotor 20, such electromotor 20
Generator operation operating mode is entered under the drive of internal combustion engine 10, now electromotor 20 is used to provide a system to send out
Electricity, wherein, internal combustion engine 10 for example can be diesel engine, current transformer 50 according to the rotating speed of internal combustion engine 10,
The parameter limit value such as power and load factor, limits the generated output of electromotor 20, prevents internal combustion engine
10 overload protections.
In the present embodiment, according to the electricity that external speed control instruction, current transformer 50 are exported to electromotor 20
Pressure is converted and is controlled the startup optimization of motor 30, and the operation of motor 30 drives system 40 to be driven
Operation, meanwhile, current transformer 50 carries out blood pressure lowering process to the voltage that electromotor 20 is exported, after blood pressure lowering is processed
Voltage can be charged to accumulator 60, in the present embodiment, accumulator 60 be used in current transformer 50
Electromotor 20 is driven to provide a voltage when starting, specifically, current transformer 50 is by the DC12V of accumulator 60
Voltage rises to DC120V so that intermediate dc bus voltage is DC120V, so as to drive electromotor 20
Run, when electromotor 20 runs, required according to the startup of internal combustion engine 10, the control of current transformer 50 is sent out
The parameters such as the output speed of motor 20, moment of torsion (the startup rotating speed of general internal combustion engine 10 is 100-120rpm,
Moment of torsion is 400-450Nm), so drive internal combustion engine 10 to start.
In the present embodiment, electric drive system controls electromotor 20 and motor 30 by current transformer 50 to be carried out
Power is transmitted, and current transformer 50 controls the generated energy of electromotor 20 according to actual energy consumption condition so that
Internal combustion engine 10 is maintained in effective fuel oil service, so can effective save energy, meanwhile, electric transmission
System drives operation, control of the operator to the equipment speed of service only to pass through pedal control by motor 30
The rotating speed of motor processed 30 is capable of achieving, and eliminates the mistake of the clutch-gearshift in conventional mechanical transmission system
Journey, it is simple to operate, the requirement to operator is reduced, and throttle is stepped on used in existing machinery drive system
Plate control internal combustion engine output, if gear is relatively low, throttle is larger, and internal-combustion engine rotational speed can be caused too high, causes
The waste of the energy.
And mechanical transmission component greatly reduces in the electric drive system, it is not necessary to by mechanical part
Frequent operation realizes the control to equipment operation, so, reduces mechanical wear and impact, and Machinery Ministry
The reduction of part can also effectively reduce mechanical noise.
The control progress of the electric drive system that the present embodiment is provided depends primarily on the control of the rotating speed of motor 30
System, and current transformer 50 to motor 30 under closed loop mode control accuracy be 1 ‰, drastically increase
The overall control accuracy of system, the main running part of the electric drive system that the present embodiment is provided is electromotor
20 and motor 30, there is no the situation of abrasion therebetween, need not mend in the condition of normal use
Fill grease (in existing machinery drive system, clutch, change speed gear box etc. easily cause contact surface abrasion,
Need to for a long time lubricate, regularly replace grease or machine oil so that maintenance costs are higher), and electromotor
20 are directly connected with internal combustion engine 10, and motor 30 is joined directly together with system to be driven 40, whole external
Connection is simple, it is easy to maintenance overhaul.
In the present embodiment, electromotor 20 can be three phase induction generator, and motor 30 can be three-phase
Asynchronous motor, wherein, using three phase induction generator and motor, overall dimensions are little, power density
The big installing space for effectively saving equipment (such as tractor).
Therefore, the electric drive system that the present embodiment is provided, is connected by electromotor with internal combustion engine, current transformer
It is connected with electromotor, accumulator and motor, motor is connected with system to be driven, so, current transformer
First the voltage of accumulator is carried out into boosting to process to drive electromotor startup optimization, the operation band of electromotor
Dynamic internal combustion engine start operation, internal combustion engine start runs backward electromotor and carries out power output so that electromotor
Generated electricity, current transformer is converted to drive according to external speed control instruction to the voltage that electromotor is exported
Dynamic motor running, the operation of motor drives system to be driven to be run, during operation, equipment operation
The control of speed only need to by control motor rotating speed be capable of achieving, and the rotating speed of motor by with
The connected pedal of motor is controlled, so, gearing is eliminated in electric drive system and is passed on Gong system
In frequently clutch-gearshift process, operate it is simpler, while electromotor and motor the two are main
There is no abrasion between running gear, so as to reduce mechanical wear and impact, improve transmission efficiency, because
This, the present invention provide electric drive system, solve transmission device in existing machinery transmission process it is easy to wear,
Complex operation and the technical problem higher to operator's requirement.
Fig. 2 is the another structural representation of electric drive system of the present invention, on the basis of above-described embodiment,
In the present embodiment, current transformer 50 includes：First current transformer 501, the second current transformer 502 and the 3rd unsteady flow
Device 503, wherein, the first current transformer 501 becomes respectively with accumulator 60, the second current transformer 502 and the 3rd
Stream device 503 is connected, and the second current transformer 502 is connected respectively with the 3rd current transformer 503 and electromotor 20, the
Three current transformers 503 are connected with motor 30, wherein, when current transformer 50 is sent in outside enabled instruction,
First the first current transformer 501 starts work, into boost operating mode, by BOOST circuits, and will
The DC12V voltages of accumulator 60 rise to DC120V, and now intermediate dc bus voltage is DC120V,
Then the startup optimization of the second current transformer 502, drives electromotor 20 to switch to motor using dc bus energy
Operating mode runs (i.e. now electromotor 20 drives internal combustion engine 10 as motor), according to internal combustion engine 10
Startup require that it is 100-120rpm that the second current transformer 502 control the output speed of electromotor 20, and moment of torsion is
400-450Nm, drives internal combustion engine 10 (such as diesel engine) to start.After the startup optimization of internal combustion engine 10, second
The control electromotor 20 of current transformer 502 enters generator operation operating mode, and (i.e. now, electromotor 20 is used as generating
Equipment is generated electricity), d-c bus voltage value DC840V is set up, the 3rd current transformer 503 detects outside
During rate control instruction, according to external speed control instruction, the 3rd current transformer 503 takes from dc bus
Electricity, drive motor 30 is run, and the operation of motor 30 drives system to be driven to be run.This reality
In applying example, upon power-up of the system, the first current transformer 501 is operated in boost mode, can aid in realizing generating electricity
The Generation Control of machine 20；When electromotor 20 starts to generate electricity, the first current transformer 501 is operated in blood pressure lowering mould
Formula, can externally provide a DC 14V, the DC control supply of 3kW, so with the first current transformer 501
Connected accumulator 60 can be charged.
Fig. 3 is the attachment structure schematic diagram of current transformer in electric drive system of the present invention, in above-described embodiment
On the basis of, as shown in figure 3, in the present embodiment, the second current transformer 502 and the 3rd current transformer 503 by
(Insulated Gate Bipolar Transistor are referred to as two insulated gate bipolar transistors：IGBT) and
Joint group is into during system operation, electromotor 20 is driven by internal combustion engine 10, is controlled in the second current transformer 502
The operation of lower entrance generating operation mode, sets up d-c bus voltage value DC840V, and the 3rd current transformer 503 is from straight
Power taking on stream bus, control motor 30 operates.Further, in the present embodiment, the first current transformer
501 is DC-DC current transformers (such as the DC-DC current transformers in Fig. 3), and DC-DC current transformers adopt two
Level BUCK circuits, upon power-up of the system, DC-DC current transformers are operated in boost mode, by outside electric power storage
The DC12V voltages in pond rise to DC120V, and now intermediate dc bus voltage is DC120V, can be aided in
Realize the Generation Control of electromotor 20；When electromotor 20 starts to generate electricity, DC-DC current transformers are operated in
Decompression mode, from DC bus-bar voltage power taking, is reduced to DC 14V, charges to outside accumulator 60.
Fig. 4 is the connection diagram of current transformer and electromotor in electric drive system of the present invention, and Fig. 5 is this
The connection diagram of current transformer and motor in bright electric drive system, as illustrated in figures 4-5, the He of electromotor 20
Pass through main cables 23, velocity transducer output signal line 22 and temperature sensing between second current transformer 502
Device output signal line 21 is connected, specifically, the current transformer of three main cables 23 and second of electromotor 20
502 main circuit connection, the two-way velocity transducer output signal line 22 of electromotor 20 and the second unsteady flow
The velocity checking circuits of device 502 connect, five road temperature sensor output signal lines 21 of electromotor 20 and the
The temperature sensing circuit of two current transformer 502 connects.
Accordingly, main cables 33, velocity sensor are passed through between the current transformer 503 of motor 30 and the 3rd
Output signal line 32 is connected with temperature sensor output signal line 31, specifically, three of motor 30
Main cables 33 are connected with the main circuit of the 3rd current transformer 503, and the two-way velocity sensor of motor 30 is defeated
Go out holding wire 32 to be connected with the velocity checking circuits of the 3rd current transformer 503, five tunnel temperature of motor 30 are passed
Sensor output signal line 31 is connected with the temperature sensing circuit of the 3rd current transformer 503, wherein, the second current transformer
Can be connected by CAN between 502 and the 3rd current transformer 503, wherein, the 3rd current transformer 503
The meeting transmit power request instruction of the second current transformer 502, the basis of the second current transformer 502 are given by CAN
Demand power controls the generated output of electromotor 20, meanwhile, the second current transformer 502 is according to internal combustion engine 1
The parameter limit value such as rotating speed, power and load factor, limits the generated output of electromotor 20, prevents interior
The overload protection of combustion engine 110.
Further, Fig. 6 is the schematic flow sheet of electric drive system control method of the present invention, wherein, electricity
Drive system may be referred to the electric drive system described in any of the above-described embodiment, as shown in fig. 6, the side
Method comprises the steps：
Step 601, current transformer drive electromotor startup optimization to drive internal combustion engine start according to enabled instruction.
In the present embodiment, with reference to the structure of Fig. 1, current transformer 50 is received after enabled instruction, current transformer
The DC12V voltages of accumulator 60 are risen to into DC120V during 50 startup optimization so that intermediate dc bus
Voltage is DC120V, so as to drive electromotor 20 to be run, wherein, when electromotor 20 runs,
Required according to the startup of internal combustion engine 10, current transformer 50 controls the ginseng such as the output speed of electromotor 20, moment of torsion
Number (the startup rotating speed of general internal combustion engine 10 is 100-120rpm, and moment of torsion is 400-450Nm), this belt transect
Dynamic internal combustion engine 10 starts.
Step 602, after the internal combustion engine start runs, drive of the electromotor in the internal combustion engine
Under carry out generating electricity and output AC electricity；
In the present embodiment, after the startup optimization of internal combustion engine 10, internal combustion engine 10 to electromotor 20 exports power,
The control electromotor 20 of current transformer 502 enters generator operation operating mode and output AC electricity (specially three-phase AC
600V), current transformer 502 sets up d-c bus voltage value DC840V, Ji Jiangjiao according to the alternating current of output
Stream electricity is converted into unidirectional current.
Step 603, the current transformer turn according to the alternating current that rate control instruction exports in the electromotor
Unidirectional current is turned to drive motor startup optimization.
In the present embodiment, when current transformer detects rate control instruction, then current transformer 50 is according to external speed
Control instruction, the power taking from dc bus, drive motor 30 is run, and the operation of motor 30 drives
System to be driven 40 is run.
The control method of the electric drive system that the present embodiment is provided, realizes the accurate control to electric drive system
System, improves the transmission efficiency of electric drive system.
Further, Fig. 7 is the another schematic flow sheet of electric drive system control method of the present invention, wherein,
Structural reference Fig. 2 of electric drive system, current transformer 50 includes：First current transformer 501, the second current transformer
502 and the 3rd current transformer 503, its control method is specially：
Step 701, control power on；
Step 702, System self-test；
Wherein, control after power on, the first current transformer 501, the second current transformer 502 and the 3rd unsteady flow
The control board startup optimization of device 503, system enters self-inspection state, if there is exception, is reported
It is alert, if self-inspection is normal, startup optimization is entered according to instruction.
Step 703, the first current transformer enter boost operating mode according to enabled instruction, set up DC12V's
DC bus-bar voltage；
In the present embodiment, current transformer is detected after enabled instruction, and the first current transformer 501 enters boosting work
Pattern, by BOOST circuits, by the DC12V voltages of outside accumulator 60 DC120V is risen to,
Now intermediate dc bus voltage is DC120V.
Step 704, the second current transformer start electric operation control；
In the present embodiment, the startup optimization of the second current transformer 502, and drive generating using DC bus-bar voltage
Machine 20 switchs to motor working condition operation, i.e., now, electromotor 20 is not intended to non-power generating, but conduct
Motor drives internal combustion engine 10 to start, and the second current transformer 501 is required according to the startup of internal combustion engine 10, control
The output speed and moment of torsion of electromotor processed 20 so that internal combustion engine 10 (such as diesel engine) startup optimization,
After the startup optimization of internal combustion engine 10, power is exported to electromotor 20, electromotor 20 is according to internal combustion engine 10
Power is generated electricity.
Step 705, the second current transformer carry out generator operation control；
In the present embodiment, in order to be controlled to the generated output of electromotor 20, the second 502, current transformer
According to the parameter limit value such as the rotating speed of internal combustion engine 10, power, load factor, the generated output of electromotor 20 is entered
Row is limited, and prevents the overload protection of internal combustion engine 10, and the second current transformer 502 according to the 3rd current transformer 503
The power request of feedback controls the generated output of electromotor 20.
Step 706, the 3rd current transformer are according to rate control instruction startup optimization；
In the present embodiment, when the 3rd current transformer 503 detects external speed control instruction, according to speed control
System instruction startup optimization, specifically, the 3rd current transformer 503 is from dc bus (now, the unsteady flows of Jing second
Device sets up d-c bus voltage value for DC840V) on power taking, drive motor 30 run.
Step 707, motor running；
In the present embodiment, after motor 30 runs, system 40 to be driven is driven to be run, this enforcement
In example, when needing the speed of service to equipment to be controlled, only motor 30 need to be controlled by pedal
Rotating speed is capable of achieving, meanwhile, when the rotating speed of motor 30 changes, by the 3rd current transformer 503 to second
The feedback power of current transformer 502 is asked, generating of second current transformer 502 according to power request to electromotor 20
Power is controlled.
In the present embodiment, second current transformers of alternating current Jing 502 of the output of electromotor 20 are converted into unidirectional current,
And set up DC bus-bar voltage for DC840V, wherein the 3rd current transformer 503 according to rate control instruction from
Dc bus (DC840V) power taking of getting on carrys out drive motor 30 and runs, and the first current transformer 501 from
Execution step 708 after power taking on dc bus.
Step 708, the first current transformer enter decompression mode；
In the present embodiment, the first current transformer 501 passes through BUCK circuits, from DC bus-bar voltage power taking,
And DC14V is reduced to, charge to outside accumulator 60.
Step 709, accumulator charge.
In the present embodiment, accumulator 60 in system start-up be used for current transformer 50 provide voltage so that
Current transformer 50 is started, when in system operation, current transformer 50 provides certain for accumulator 60
Voltage so that accumulator 60 is charged.
Finally it should be noted that：Various embodiments above is only illustrating technical scheme rather than right
Its restriction；Although being described in detail to the present invention with reference to foregoing embodiments, this area it is common
Technical staff should be understood：It still can modify to the technical scheme described in foregoing embodiments,
Either equivalent is carried out to which part or all technical characteristic；And these modifications or replacement, and
The scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution is not made.
Claims (9)
1. a kind of electric drive system, it is characterised in that include：
Current transformer that the electromotor being connected with internal combustion engine is connected with accumulator and with system phase to be driven
Motor even, wherein, the current transformer is connected respectively with the electromotor and the motor；
The current transformer is used to drive the electromotor and the generator operation, the electromotor to be used for
The internal combustion engine start is driven under the driving of the current transformer, so as to institute after the internal combustion engine start
Generator transmission power is stated, the electromotor is used to wait to drive described in drive under the driving of the current transformer
Dynamic system start-up operation.
2. electric drive system according to claim 1, it is characterised in that the current transformer includes：
First current transformer, the second current transformer and the 3rd current transformer, wherein, first current transformer and the storage
Battery be connected, second current transformer respectively with first current transformer, the 3rd current transformer and institute
State electromotor to be connected, the 3rd current transformer is connected with first current transformer and the motor.
3. electric drive system according to claim 2, it is characterised in that first current transformer
For direct current DC-DC current transformers.
4. the electric drive system according to Claims 2 or 3, it is characterised in that described second becomes
Stream device and the 3rd current transformer are composed in parallel by two insulated gate bipolar transistor IGBTs.
5. electric drive system according to claim 2, it is characterised in that the electromotor and institute
State between the second current transformer and the motor and the 3rd current transformer between by main cables and
Signal cable is connected, wherein the signal cable includes velocity transducer output signal line and temperature sensing
Device output signal line.
6. according to the arbitrary described electric drive system of claim 1-3, it is characterised in that the generating
Machine is three phase induction generator, and the motor is threephase asynchronous.
7. a kind of control method of electric drive system, it is characterised in that the electric drive system is right
The arbitrary described electric drive systems of 1-6 are required, the control method of the electric drive system includes：
Current transformer drives electromotor startup optimization to drive internal combustion engine start according to enabled instruction；
After the internal combustion engine start runs, the electromotor carries out sending out under the drive of the internal combustion engine
Electricity and output AC electricity；
The current transformer is direct current according to the AC conversion that rate control instruction exports in the electromotor
Electricity is with drive motor startup optimization.
8. method according to claim 7, it is characterised in that methods described also includes：It is described
Current transformer is converted in the alternating current that the electromotor is exported and blood pressure lowering is processed for accumulator and is filled
Electricity.
9. method according to claim 7, it is characterised in that methods described also includes：It is described
Current transformer instructs the generated output of the control electromotor according to power request.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510771738.2A CN106671795A (en) | 2015-11-11 | 2015-11-11 | Electric drive system and control method thereof |
| PCT/CN2015/095612 WO2017080001A1 (en) | 2015-11-11 | 2015-11-26 | Electric transmission system and control method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510771738.2A CN106671795A (en) | 2015-11-11 | 2015-11-11 | Electric drive system and control method thereof |
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|---|---|
| CN106671795A true CN106671795A (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510771738.2A Pending CN106671795A (en) | 2015-11-11 | 2015-11-11 | Electric drive system and control method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN106671795A (en) |
| WO (1) | WO2017080001A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110816306A (en) * | 2018-07-23 | 2020-02-21 | 中车株洲电力机车研究所有限公司 | Diesel power generation electric drive whole vehicle system and vehicle |
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| WO2017080001A1 (en) | 2017-05-18 |
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