CN102774292A - Dual-motor drive system - Google Patents
Dual-motor drive system Download PDFInfo
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- CN102774292A CN102774292A CN2012102954744A CN201210295474A CN102774292A CN 102774292 A CN102774292 A CN 102774292A CN 2012102954744 A CN2012102954744 A CN 2012102954744A CN 201210295474 A CN201210295474 A CN 201210295474A CN 102774292 A CN102774292 A CN 102774292A
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Abstract
The invention discloses a dual-motor drive system, wherein a first motor (2) and a second motor (4) are coupled to a mechanical coupling device (5); a first power supply (6) and a second power supply (7) are coupled to an AC (alternating-current)-DC (direct current) converter module (10) respectively; a drive circuit (9) is coupled to the AC-DC converter module (10); the AC-DC converter module (10) is coupled to the leading-out terminals of the first winding (1) of the first motor (2) and the second winding (3) of the second motor (4); a logical algorithm circuit (8) is coupled to the drive circuit (9); and a control module (11) is coupled to the logical algorithm circuit (8). Aiming at the defects of traditional motor systems, the motor drive system designed can optimize power supply and configuration and improve work reliability.
Description
Technical field
The present invention relates to motor and control technology field thereof, particularly a kind of dual-motor drive system of dual power supply.
Background technology
At present, in hybrid vehicle and the continuous development of pure electric automobile automobile, serviceability, mode of operation and the energy-saving effect of automobile driving system under different road conditions there has been higher requirement.Traditional three phase alternating current motor is when being positioned at different motoring conditions in the face of different road conditions and drive system; Can not realize the conversion between the polynary programme of work, can not adopt the corresponding driving scheme according to the effect horse power demand of drive system with conserve energy.And the drive system phase shortage etc. under the failure mode, the three phase electric machine winding current sharply rises, vibration noise increases, and influences the drive ability and the life-span of system, even jeopardizes driving safety, reliability is relatively poor.Therefore, for the occasion that hybrid vehicle and pure electric automobile etc. are had relatively high expectations to motor driven systems reliability and practicality, motor driven systems need upgrade and transform.
Summary of the invention
The purpose of this invention is to provide a kind of various road conditions and motoring condition of adapting to, and can under the situation that motor breaks down, have the dual-motor drive system of certain ability that works on.
The present invention takes following technical scheme to realize: comprise first motor with first winding, second motor with second winding, mechanical coupler, first power supply, second source, logical algorithm circuit, driving circuit, AC-DC conversion module, control module; First motor and second motor are alternating current dynamo; It is characterized in that: first motor and second motor are coupled to mechanical coupler; First power supply and second source are coupled respectively to the AC-DC conversion module; Driving circuit is coupled to the AC-DC conversion module; The AC-DC conversion module is coupled to the leading-out terminal of second winding of first winding and second motor of first motor, and the logical algorithm electrical hookup is to driving circuit, and control module is coupled to the logical algorithm circuit; Control module configuration logic algorithm circuit, logical algorithm circuit arrangement driving circuit, drive circuitry arrangement AC-DC conversion module is accomplished the control to the mode of operation of first power supply, second source, first motor and second motor.
First winding and second winding are three phase windings, and first winding and second winding are stator winding.Mechanical coupler is coupler or belt gear or gear drive.Its rotating shaft of passing through of first motor is coupled to mechanical coupler, and its rotating shaft of passing through of second motor is coupled to mechanical coupler.
Driving circuit carries out power gain to the signal of importing it, and first power supply is a direct supply, and first power supply and first motor form the energy supply coupling; Second source is a direct supply; Second source second motor forms the energy supply coupling; The DC current that the AC-DC conversion module is imported first power supply and second source carries out direct current and becomes the conversion exchange, and the alternating current that first motor and second motor are refluxed carries out the conversion of AC-DC.
The mode of operation of first power supply and second source comprises the power supply of first power supply, and second source is not supplied power; Or first power supply do not supply power second source power supply; Or first power supply and second source supply power simultaneously; Thereby or the electric energy that first power supply is accepted first motor and provided charges, and second source does not charge; Thereby or the electric energy that second source is accepted second motor and provided charges, and first power supply does not charge; Thereby thereby or the electric energy that first power supply electric energy accepting first motor and provide charges and second source is accepted second motor and provided charge.
The present invention compared with prior art has significant advantage and beneficial effect, is embodied in the following aspects:
Automobile driving system by control module according to first power supply, second source, first motor, second motor and the vehicle traveling information of its collection, traffic information etc.; Make rational energy allocative decision; And to subordinate's module output command; Thereby realize the power division between first power supply, second source, first motor and second motor, to realize best system works and energy-saving effect.
Specifically can be presented as: the power supply of first power supply, second source is not supplied power, first machine operation; Or first power supply do not supply power second source power supply, second machine operation; Or first power supply and second source supply power jointly, two motors are all worked; Thereby or the electric energy that first power supply is accepted first motor and provided charges, and second source does not charge; Thereby or the electric energy that second source is accepted second motor and provided charges, and first power supply does not charge; Thereby or the electric energy that first power supply and the second source motor of accepting to be mated simultaneously provides charges.
In addition, when one of them motor et out of order, another not the motor of et out of order can work on, normally move to guarantee drive system, improved the reliability of system.
Description of drawings
Fig. 1 is the structural representation of dual-motor drive system of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is done further detailed description; Below just exemplary about the description of embodiment of the present invention; The claimed theme that is not meant to limit the present invention; Other variations in the claim protection domain for embodiment described in the invention also exists all belong to the theme that will protect required for the present invention.
For mention among the present invention " coupling "; Definition according to electric, electronics, mechanical field; Be meant to exist between input and the output of two or more physical constructions, circuit component or electric network and closely cooperate and influence each other; And the green phase mutual effect is from the phenomenon of a side direction opposite side transmission signals or energy, summary say that coupling just is meant that two or more entities interdepend and measures in one of the other side.Be appreciated that the type of transmission into digital signal, voltage, electric current, power homenergic stream in the present invention, " coupling " according to interactively under the different situations between each module in of the present invention is further understood that direct connection or connection indirectly.Though so announced a kind of exemplary layout and structure of each assembly in the embodiments of the invention, also be included in the protection theme of this invention the protection theme scope in have other layouts and the structure under the different coupling mode.
Like accompanying drawing 1, wherein, 1 is first winding, and 2 is first motors; 3 is second windings, and 4 is second motors, the 5th, and mechanical coupler, 6 is first power supplys; The 7th, second source, the 8th, logical algorithm circuit, the 9th, driving circuit, the 10th, AC-DC conversion module; The 11st, control module, the 12nd, rotating shaft, the 13rd, rotating shaft.
Like Fig. 1; First motor 2 has first winding 1; Second motor 4 has second winding, 3, the first motors 2 and is coupled to mechanical coupler 5, the second motors 4 through rotating shaft 12 and is coupled to mechanical coupler 5 through rotating shaft 13; First winding 1 and second winding 3 are three phase windings, and first motor 2 and second motor 4 are alternating current dynamo.Mechanical coupler 5 is drive coupling or gear mechanism or belt gear; Acting as the moment that first motor 2 and second motor 4 are exported superposes; Thereby realize the variation of moment output under the drive system different driving scheme, and can make formation mechanical linkage structure between first motor 2 and second motor 4.
First power supply 6, second source 7 are connected to AC-DC conversion module 10 respectively; Separate between first power supply 6 and the second source 7; Leading-out terminal with first winding 1 first motor 2 and second winding 3 of second motor 4 AC-DC conversion module 10 is connected respectively; First power supply 6 is as first motor, 2 power supply sources, and second source 7 is as the power supply source of second motor 4.First power supply 6 is battery or is electric capacity that second source 7 is battery or electric capacity.Control module 11 is connected to logical algorithm circuit 8, and logical algorithm circuit 8 is connected to driving circuit 9, and driving circuit 9 is connected to AC-DC conversion module 10.
Control module 11 receives information of voltage, current information, the state of charge information from first power supply 6 and second source 7, and the information such as command information of the rotary speed information of first motor 2 and second motor 4, traffic information, speed information, chaufeur.And send instruction to logical algorithm circuit 8 according to the information that receives; After receiving, 8 pairs of instructions of logical algorithm circuit will handle the driving circuit 9 that is passed to next stage with operation result; Driving circuit 9 carries out the signal that receives to be passed to AC-DC conversion module 10 after the power gain; AC-DC conversion module 10 can convert the DC current that first power supply 6 and second source 7 are imported into alternating current; Also can convert the alternating current that is refluxed by first motor 2 or second motor 4 into DC current; 10 pairs of AC-DC conversion modules through its energy stream carry out AC-DC or DC-AC conversion; And realize the switching of the break-make of the stream of energy between first power supply 6 and first motor 2 and the second source 4 and second motor 4, accomplish switching to the mode of operation of first motor 2, second motor 4, first power supply 6 and second source 7.
Control module 11 is according to different situations configuration driven system, realizes the direction of energy pathway and the main technological route that switches to this drive system of break-make between the switching of the direction of energy pathway between first motor 2 and first power supply 6 and break-make and second motor 4 and the second source 7.Manifestation is: 6 power supplies of first power supply, and second source 7 is not supplied power; Or first power supply 6 do not supply power second source 7 power supply; Or first power supply 6 supply power jointly with second source 7; Thereby or the electric energy that first power supply 6 is accepted first motor 2 and provided charges, and second source 7 does not charge; Thereby or the electric energy that second source 7 is accepted second motor 4 and provided charges, and first power supply 6 does not charge; Thereby or first power supply 6 and second source 7 electric energy that motor provided of accepting to be mated separately simultaneously mode of operation such as charge.
Next will be described further according to automobile embodiment to above mode of operation under different road conditions and motoring condition.In the following mode of operation, 6 power supplies of first power supply correspond to 2 runnings of first motor, and second source 7 power supplies correspond to 4 runnings of second motor, and the takeoff output of two motors is through the takeoff output sum of two motors of mechanical coupler 5 coupling back outputs.
When automobile is in starting state; Because the difference of situation such as the load of automobile, road conditions, desired acceleration/accel; The required starting power of automobile is also different; System can be configured to according to the size of required starting power automatically: power demand hour is configured to the independently-powered or second source 7 of first power supply 6 and supplies power alone, is configured to first power supply 6 when power demand is big and supplies power jointly with second source 7.
When automobile was at the uniform velocity motoring condition, system is configured to first power supply 6 usually automatically or second source 7 is supplied power alone, but if the load of automobile is excessive, or also can be configured to first power supply 6 automatically under the bigger situation of road conditions resistance and supply power jointly with second source 7.
When automobile is in when giving it the gun state; According to situation such as automobile load, road conditions, desired acceleration/accels; System can be configured to according to the size of power demand automatically: power demand hour is supplied power alone by first power supply 6 or second source 7 is supplied power alone, is configured to first power supply 6 when power demand is big automatically and supplies power jointly with second source 7.
When automobile is in the motoring condition that brakes or slide, the power supply that system configuration is extremely mated for the electric energy that reclaims the motor generation.Callable electric energy according to the motor that acceleration/accel and braking strength the determined generation of slowing down; System can be configured to following electric energy recovery scheme according to status informations such as motor status, power supply status, motoring conditions: first power supply 6 receives electric energy, and second source 7 does not receive electric energy; Or second source 7 reception electric energy, first power supply 6 does not receive electric energy; Or first power supply 6 receive electric energy simultaneously with second source 7.
The technical scheme that reclaims about the electric energy of power supply 6 and 7 pairs of two motors of power supply here further specifies: control module 11 send instruct to logical algorithm circuit 8 again to driving circuit 9 at last to ac-dc converter circuit 10, accomplish the configuration of drive system mode of operation.A kind of mode is through its motor that is mated of AC-DC conversion module inversion rear drive by a power supply; Another motor links through mechanical coupler 5; Its stator winding produces inducing current, and inducing current charges to another power supply of supplying power after 10 rectifications of AC-DC conversion module; Another kind of mode be to drive AC motor rotor by external impetus to rotate, and charges to the power supply that it mated after 10 rectifications of AC-DC conversion module in the stator winding of two motors equal inductiopn rotor magnetic field and produce inducing current.Foregoing description is that drive system is at the programme of work of opening under the situation of electrically-charged loop; Drive system is in the driving process of reality; Control module 11 can confirm that the current electric energy that whether carries out reclaims and two power supplys charging scheme separately through gathering status information, driver's operation information and road conditions, velocity informations etc. such as motor status information, power line voltage and state-of-charge; Thereby further drive system is configured; Be full of electricity when power supply or existing other not suit power supply is carried out under the electrically-charged situation, drive system will not opened charge circuit, or break charge circuit in process of charging.The break-make of the break-make of first power supply, 6 charge circuits and the charge circuit of second source 7 is separate.If motor is an AC induction motor, then when opening the charge circuit of certain power supply, needing provides excitation to the winding of the motor that this power supply mated; If motor is magneto-electric machine, then when opening the charge circuit of certain power supply, the winding of the motor that does not need to mate to this power supply provides excitation.
Electric energy about power supply power supply and motor reclaims, and is first power supply 6 and first motor 2 is complementary, and second source 7 and second motor 4 mate mutually.Promptly first power supply 6 is supplied power to energy recovery to the first power supply 6 of first motor, 2, the first motors 2; Energy recovery to the second source 7 of second source 7 power supply to second motor, 4, the second motors 4.
Following about the mode of operation of this drive system when the motor et out of order.When one of them motor et out of orders of two motors; By control module 11 according to the information configuration logical algorithm circuit of being gathered 8 such as motor status; Logical algorithm circuit 8 configuration driven circuit 9; Driving circuit 9 configuration AC-DC conversion modules 10, another motor that makes et out of order not guarantees down that in the power supply of cooresponding power supply with it drive system continues to move.
For being example embodiment of the present invention; Be to be understood that to being wherein a certain exemplary in the protection domain of claims of the present invention; Have the directiveness effect that those skilled in the art is realized the corresponding techniques scheme, but not to qualification of the present invention.
Claims (8)
1. dual-motor drive system; Comprise: have first motor (2) of first winding (1), second motor (4), mechanical coupler (5), first power supply (6), second source (7), logical algorithm circuit (8), driving circuit (9), AC-DC conversion module (10), control module (11) with second winding (3); First motor (2) and second motor (4) are alternating current dynamo; It is characterized in that: said first motor (2) and second motor (4) are coupled to mechanical coupler (5); First power supply (6) and second source (7) are coupled respectively to AC-DC conversion module (10); Driving circuit (9) is coupled to AC-DC conversion module (10); AC-DC conversion module (10) is coupled to the leading-out terminal of second winding (3) of first winding (1) and second motor (4) of first motor (2), and logical algorithm circuit (8) is coupled to driving circuit (9), and control module (11) is coupled to logical algorithm circuit (8); Control module (11) configuration logic algorithm circuit (8); Logical algorithm circuit (8) configuration driven circuit (9); Driving circuit (9) configuration AC-DC conversion module (10) is accomplished the control to the mode of operation of first power supply (6), second source (7), first motor (2) and second motor (4).
2. a kind of dual-motor drive system according to claim 1 is characterized in that: said first winding (1) and second winding (3) are three phase windings, and first winding (1) and second winding (3) are stator winding.
3. a kind of dual-motor drive system according to claim 1 is characterized in that: said mechanical coupler (5) is coupler or belt gear or gear drive.
4. a kind of dual-motor drive system according to claim 1; It is characterized in that: its rotating shaft (12) of passing through of said first motor (2) is coupled to mechanical coupler (5), and its rotating shaft (13) of passing through of second motor (4) is coupled to mechanical coupler (5).
5. a kind of dual-motor drive system according to claim 1 is characterized in that: said driving circuit (9) carries out power gain to the signal of importing it.
6. a kind of dual-motor drive system according to claim 1 is characterized in that: said first power supply (6) is a direct supply, and first power supply (6) forms the energy supply coupling with first motor (2); Second source (7) is a direct supply, and second source (7) second motors (4) form the energy supply coupling.
7. a kind of dual-motor drive system according to claim 1; It is characterized in that: the DC current that said AC-DC conversion module (10) is imported first power supply (6) and second source (7) carries out direct current and becomes the conversion that exchanges, and first motor (2) and second motor (4) alternating current that is refluxed are carried out the conversion of AC-DC.
8. a kind of dual-motor drive system according to claim 1 is characterized in that: the mode of operation of said first power supply (6) and second source (7) comprises first power supply (6) power supply, and second source (7) is not supplied power; Or first power supply (6) do not supply power second source (7) power supply; Or first power supply (6) and second source (7) supply power simultaneously; Or first power supply (6) accept first motor (2) thus the electric energy that provides charges, second source (7) does not charge; Or second source (7) accepts second motor (4) thus the electric energy that provides charges, first power supply (6) does not charge; Or first power supply (6) accept first motor (2) thus the electric energy that provides charges and second source (7) accepts second motor (4) thus the electric energy that provides charges.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102954744A CN102774292A (en) | 2012-08-20 | 2012-08-20 | Dual-motor drive system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102954744A CN102774292A (en) | 2012-08-20 | 2012-08-20 | Dual-motor drive system |
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| CN102774292A true CN102774292A (en) | 2012-11-14 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104986053A (en) * | 2015-06-19 | 2015-10-21 | 上海众联能创新能源科技股份有限公司 | Dynamic control method and system of new energy vehicle |
| CN105082318A (en) * | 2015-08-19 | 2015-11-25 | 广西三威林产工业有限公司 | Thermal energy air inducing device for fiber board production line |
| CN106788130A (en) * | 2017-01-10 | 2017-05-31 | 四川埃姆克伺服科技有限公司 | A kind of electric machine control system |
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| CN106788130A (en) * | 2017-01-10 | 2017-05-31 | 四川埃姆克伺服科技有限公司 | A kind of electric machine control system |
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Application publication date: 20121114 |