CN204821975U - Electric motor car of magnetic suspension switched reluctance motor drive formula - Google Patents
Electric motor car of magnetic suspension switched reluctance motor drive formula Download PDFInfo
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- CN204821975U CN204821975U CN201520542248.0U CN201520542248U CN204821975U CN 204821975 U CN204821975 U CN 204821975U CN 201520542248 U CN201520542248 U CN 201520542248U CN 204821975 U CN204821975 U CN 204821975U
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- switched reluctance
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Abstract
Electric motor car of magnetic suspension switched reluctance motor drive formula belongs to electric motor car technical field. Motor casing is equipped with both sides the end cover, and the motor shaft both ends are passed through the bearing and are installed on the end cover, and motor stator cup joints together with the motor shaft is fixed, and it is closed along the way strength that the magnetic conductance is the biggest that electric motor rotor and casing zonulae occludens, electric motor rotor follow the magnetic flow, produces the magnetism pulling force and forms the torque, and the pulling rotor is rotatory to drive the wheel rotation promptly. Simultaneously, electric motor rotor all utilizes magnetic levitation technology's magnetcisuspension buoyancy to realize radial and axial contactless in radial and axial, realizes the zero friction and does not have the rotation at a high speed of wearing and tearing. The utility model discloses a magnetic suspension motor support actuating system passes through magnetic levitation technology has realized zero friction between hub for vehicle wheel and the frame, do not have the wearing and tearing supporting to it is rotatory through the direct drive wheels of electromagnetic torque, shortened the driving chain, improved drive efficiency, it lands to show has reduced the energy consumption, has improved electric automobile's dynamic performance.
Description
Technical field
The utility model relates to a kind of type of drive of novel Electrical Bicycle, adopts magnetic suspension switched reluctance motor to drive, is specifically related to magnetic suspension switched reluctance motor drive type electric car, belongs to vehicle technology field.
Background technology:
General service condition in current industry, Electrical Bicycle mainly contains two kinds of motors: efficient rare-earth permanent magnet brush motor and efficient rare-earth permanent magnetic brushless, most of Electrical Bicycle also rests on the brush motor stage in the market.Brush motor adopts mechanical commutation, and lower to the technical requirements of control system, relative cost is lower than brushless motor, and the moment of starting of brush motor is slightly larger than brushless motor.But fatal weakness is: the life-span is short, noise is large, efficiency is low.Its Long-Time Service carbon brush abrasion is serious, more fragile.Wearing and tearing simultaneously create a large amount of carbon dusts, and these dust fall in gear oil, and gear oil is accelerated dry, noise of motor increases further.Carbon brush in brush motor uses and just needs for about 1 year to change, and 2/3rds when the mileage that once travels of charging is bought not as good as new car, and under power during climbing, also can burn out controller.This is because after motor replacing carbon brush, commutator has also been ground with a groove, makes carbon brush area of contact reduce, spark can be produced after the carbon brush energising of bad contact and accelerate oxidation commutator and copper sheet, having caused above-mentioned bad phenomenon.
For the above-mentioned defect of prior art, need the Electrical Bicycle that a kind of New-type electric machine type of drive is provided.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of Electrical Bicycle-magnetic suspension switched reluctance motor drive type electric car of New type driving system.The utility model utilizes magnetic suspension reluctance motor that electric energy is converted into mechanical energy effectively, namely adopts magnetic levitation technology to stator winding and the energising of outer winding, drives rotor turns and rotor suspension bearing vehicle body, drive rotation of wheel, realize without friction without wearing and tearing.
The purpose of this utility model is achieved through the following technical solutions: magnetic suspension switched reluctance motor drive type electric car, comprise wheel and the wheel motor systems being placed in wheel, it is characterized in that, this wheel motor systems comprises close-connected housing, motor shaft with wheel, be provided with motor stator, rotor, power commutator and controller, detector and left and right magnet steel and left and right outer winding in housing, described detector comprises shaft position sensor, radial displacement transducer and tachogen;
Together with described motor stator is fixedly sleeved with motor shaft, rotor and housing compact siro spinning technology, and be placed in motor stator outer ring, and leave gap with motor stator; Described left and right magnet steel is placed on rotor arranged on left and right sides end face respectively, and described left and right outer winding is individually fixed in left and right sidewall in housing; Described motor stator end face is fixedly installed radial displacement transducer and tachogen, and the outer winding side of case inside wall is fixedly installed shaft position sensor;
Described rotor is salient-pole structure, and its inner peripheral wall is evenly distributed with the salient-pole structure adopting laminar, and described motor stator adopts salient-pole structure, and its radial outer circle wall is evenly distributed with salient-pole structure; Described housing arranged on left and right sides is equipped with left and right end cap respectively, and motor shaft two ends are arranged on left and right end cap respectively by auxiliary bearing.
Described power commutator comprises on-off element, the storage battery of direct supply of generation or rectifier.
Described controller is comprehensive displacement detector, forms by having the microcomputer of stronger information processing capability or digital logic circuit and interface circuit.
Described motor stator is provided with concentratred winding, and relative two windings in series of motor stator diametric(al) become a phase.
Described shaft position sensor is fixed on outer winding support.
Described motor stator be provided with a sensor stand in the radial direction, this support is placed with along the circumferential direction well-distributed radial displacement transducer and tachogen.
In the utility model, left and right end cap plays sealing fixation, is fixedly connected with housing by bearing, and motor shaft two ends are arranged on end cap by auxiliary bearing, and motor shaft plays fixed stator and supports vehicle body effect.
Magnetic suspension switched reluctance motor in the utility model is a kind of outer rotor internal stator electric machine structure, comprises salient pole stator, rotor with salient poles, i.e. so-called biconvex polar form structure, and rotor progression is different.Motor stator adopts salient-pole structure, and radial outer circumference surface is evenly distributed with salient-pole structure, and stator has the simplest concentratred winding, and relative two windings in series of diametric(al) become a phase.Rotor is salient-pole structure, and inner periphery side is evenly distributed with salient-pole structure, adopts laminar, with wheel hub compact siro spinning technology, without any winding, the commutator and slip ring etc. of form, rotor and housing compact siro spinning technology, housing is fixedly connected with wheel, band motor car wheel associated movement.
Magnet steel is fixed on the end face of rotor both sides, and comprise left side magnet steel and right side magnet steel, outer winding is fixed on case inside, is divided into left side winding and right side winding.Rotor is followed magnetic flux and will be closed along the road strength that magnetic conductance is maximum, produces magnetic pull and forms torque, pulls rotor to rotate and namely drives rotation of wheel.Meanwhile, rotor realizes radial and axial not contacting in radial direction with axially all utilizing the magnetic suspension force of magnetic levitation technology, realizes without the High Rotation Speed of friction without wearing and tearing.
Power commutator is the supplier that switched reluctance motor runs time institute's energy requirement, is the switch block connecting power supply and electrical motor winding.Therefore power commutator comprises the direct supply and on-off element etc. that are produced by storage battery or rectifier.
Controller is comprehensive displacement detector, the motor rotor position that current probe provides, the order of the feedback information such as speed and electric current and outside input, then analyzing and processing is passed through, determine control policy, power commutator to system sends a series of executive command, and then controls motor running, reaches control object.Controller is made up of the microcomputer or the part such as digital logic circuit and interface circuit with stronger information processing capability.
(position) detector is the supplier of the signal such as rotor position and speed.It provides the signal of the actual relative position of rotor interpolar and the speed signal of rotor operation in time.Comprise shaft position sensor and radial displacement transducer and tachogen.
The principle of rotation of wheel and rotor rotate, when controller receives each phase magnetic pole of the stator and rotor magnetic pole relative position information in electrical motor that position detector provides, namely carry out judgement process, give an order to power converter, determine in stator winding, which phase winding is excitatory.By excitatory phase winding and conducting, at this moment have current flowing in excitatory phase winding, produce magnetic flux, due on magnetic pull effect rotor, certain of the close excitatory phase of stator is just attracted rotor magnetic pole, makes rotor turns; When rotor forwards the rotor magnetic pole be attracted phase pole coincide excitatory with stator to, magnetic pull disappears, and this Time Controller according to the information of position detector, when rotor is about to reach balance position, can be given an order to power converter, disconnects this excitatory phase winding.In this process, the detection signals such as the rotor magnetic pole relative position of other phases that controller also can provide according to position detector and motor running velocity, at corresponding other phase windings of moment order conducting, rotor is made to continue to produce equidirectional torque, to ensure that rotor continuously runs under certain speed.Sense of current on torque without any impact.As long as position detector can provide rotor interpolar relative position information immediately, controller energy break-make that is timely and each phase winding of control stator exactly, the torque and rotational speed required by switched reluctance motor just can produce, to reach optimal operational condition.
Suspension theory: the magnetic tensile stress formed on the magnetic border of different permeabilitys (as air and iron core) in magnetic circuit is referred to as Maxwell force, also referred to as reluctance force.The action direction of this power is all perpendicular to the surface of motor stator (rotor).If the magnetic flux in motor is symmetrical, its Maxwell force makes a concerted effort to be zero.If it is uneven that rotor deviate from that the center of motor stator causes motor magnetic flux to distribute, then Maxwell force is made a concerted effort just non-vanishing, and its action direction is consistent with the direction of rotor eccentricity, the magnetic tensile stress in Here it is electric machine theory, the bias of rotor is larger, and magnetic tensile stress is also larger.Air-gap field is produced by main winding current and the combined action of suspending windings electric current.
In original motor stator winding, additional a set of levitation force winding, has broken the balance of former air-gap field, produces and acts on epitrochanterian lift force to realize the stable suspersion of rotor, avoid mechanical wear, possesses the function rotating and suspend simultaneously.For A phase α axle, the main winding of 4 grades of windings in series diametrically creates biased magnetic flux, the magnetic flux that the diametral load winding of two-stage windings in series diametrically produces produces the effect strengthening and weaken respectively to biased magnetic flux, produce thus rotor level radial suspension force to the right.When radial suspension force winding current is reverse, level radial suspension force left can be produced.Meanwhile, β Axial and radial power can be produced by the radial suspension force winding of main winding and the β axle vertical with α axle.Two power can synthesize the radial suspension force of required any direction.This principle is equally applicable to B phase, C phase.The conducting in turn of three-phase main winding, according to the negative feedback control of stator radial displacement transducer, can produce the continuous radial suspension force needed for stator suspension.
In like manner, for the rotor suspension on axial direction, winding energising outside both sides, after rotor offsets slight distance from balance position toward side, the magnetic pull size that both sides magnet steel is subject to equally does not become not etc. from original, the change of distance detected by displacement detector, correspondingly change the size of both sides winding current, make side ER effect large, side electric current diminishes, make the side magnetic pull of distance become large, diminish apart near side magnetic pull, rotor is withdrawn into original balance position.
Under detecting and controlling system controls, produce the radial and axial magnetic suspension force of supporting vehicle body and drive the electromagnetic torque of rotation of wheel.
Magnetic suspension motor supporting driving system of the present utility model is achieved between wheel nave and vehicle frame without friction, nothing wearing and tearing supporting by magnetic levitation technology, and rotated by electromagnetic torque direct drive of wheel, shorten messenger chain, improve drive efficiency, significantly reduce energy consumption, improve the tractive performance of electronlmobil.
Accompanying drawing explanation
Fig. 1 is the structural representation of wheel motor systems in the utility model;
Fig. 2 is the lateral plan of Fig. 2;
Fig. 3 be in Fig. 1 A-A to cutaway view;
Fig. 4 be in Fig. 2 B-B to cutaway view;
Fig. 5 is the block diagram of Fig. 1;
In figure: 1 end cap, 2 outer windings, 3 housings, 4 magnet steel, 5 auxiliary bearings, 6 rotors, 7 motor stators, 8 motor shafts, 9 shaft position sensors, 10 radial displacement transducers and tachogen, 11 power commutator and controllers.
Detailed description of the invention
Magnetic suspension switched reluctance motor drive type electric bicycle provides a kind of drive system of novel Electrical Bicycle, utilize magnetic suspension reluctance motor that electric energy is converted into mechanical energy effectively, namely adopt magnetic levitation technology to stator winding and the energising of outer winding, rotor turns and rotor is driven to suspend, drive rotation of wheel, realize without friction without wearing and tearing.
Magnetic suspension switched reluctance motor drive type electric car, comprises wheel and the wheel motor systems being placed in wheel.This wheel motor systems comprises close-connected housing 3, motor shaft 8 with wheel, be provided with motor stator 7, rotor 6, power commutator and controller 11, detector and left and right magnet steel 4 and left and right outer winding 2 in housing, detector comprises shaft position sensor 9, radial displacement transducer and tachogen 10.
Together with motor stator is fixedly sleeved with motor shaft, rotor and housing compact siro spinning technology, and be placed in motor stator outer ring, and leave gap with motor stator.Rotor is salient-pole structure, and its inner peripheral wall is evenly distributed with the salient-pole structure adopting laminar, and motor stator adopts salient-pole structure, and its radial outer circle wall is evenly distributed with salient-pole structure.
Motor stator end face is fixedly installed radial displacement transducer and tachogen, the outer winding side of case inside wall is fixedly installed shaft position sensor.Motor stator is provided with concentratred winding, and relative two windings in series of motor stator diametric(al) become a phase.Shaft position sensor is fixed on outer winding support.Motor stator be provided with a sensor stand in the radial direction, this support is placed with along the circumferential direction well-distributed radial displacement transducer and tachogen.
Left and right magnet steel is placed on rotor arranged on left and right sides end face respectively, and left and right outer winding is separately fixed at left and right sidewall in housing.Housing arranged on left and right sides is equipped with left and right end cap 1 respectively, plays sealing fixation, is fixedly connected with housing.Motor shaft two ends are arranged on left and right end cap respectively by auxiliary bearing 5, and motor shaft, through motor, end cap, wheel hub, stator, plays and supports vehicle body effect.
Power commutator is the supplier that switched reluctance motor runs time institute's energy requirement, is the switch block connecting power supply and electrical motor winding.Therefore power commutator comprises the direct supply and on-off element etc. that are produced by storage battery or rectifier.
Controller is comprehensive displacement detector, the motor rotor position that current probe provides, the order of the feedback information such as speed and electric current and outside input, then analyzing and processing is passed through, determine control policy, power commutator to system sends a series of executive command, and then controls motor running, reaches control object.Controller is made up of the microcomputer or the part such as digital logic circuit and interface circuit with stronger information processing capability.Power commutator and controller are placed on case inside.
(position) detector is the supplier of the signal such as rotor position and speed.It provides the signal of the actual relative position of rotor interpolar and the speed signal of rotor operation in time.Comprise shaft position sensor and radial displacement transducer and tachogen.Shaft position sensor is fixed on outer winding support.There is a sensor stand in the radial direction, support is placed with along the circumferential direction well-distributed radial displacement transducer and tachogen.
The Main Function of this drive system is that winding energising produces lift force and rotating torques, and rotor is subject to rotating torques effect and rotates, and the lift force produced in the radial direction makes rotor interpolar be in a kind of state of equilibrium all the time.Axial direction upper magnetic steel and outer winding effect, make rotor axial is in balance position all the time.Thus realize radial direction upper rotor part without suspending without friction in frictional rotation and axial direction.Main operational principle is as follows:
After drive system operationalizes, when controller receives each phase magnetic pole of the stator and rotor magnetic pole relative position information in electrical motor that position detector provides, namely carry out judgement process, give an order to power converter, determine in stator winding, which phase winding is excitatory.By excitatory phase winding and conducting, at this moment have current flowing in excitatory phase winding, produce magnetic flux, due on magnetic pull effect rotor, certain of the close excitatory phase of stator is just attracted rotor magnetic pole, makes rotor turns; When rotor forwards the rotor magnetic pole be attracted phase pole coincide excitatory with stator to, magnetic pull disappears, and this Time Controller according to the information of position detector, when rotor is about to reach balance position, can be given an order to power converter, disconnects this excitatory phase winding.In this process, the detection signals such as the rotor magnetic pole relative position of other phases that controller also can provide according to position detector and motor running velocity, at corresponding other phase windings of moment order conducting, rotor is made to continue to produce equidirectional torque, to ensure that rotor continuously runs under certain speed.Sense of current on torque without any impact.As long as position detector can provide rotor interpolar relative position information immediately, controller energy break-make that is timely and each phase winding of control stator exactly, the torque and rotational speed required by switched reluctance motor just can produce, to reach optimal operational condition.
Additional a set of levitation force winding in original motor stator winding, has broken the balance of former air-gap field, has produced and act on epitrochanterian lift force to realize the stable suspersion of rotor, avoid mechanical wear, possessed the function rotating and suspend simultaneously simultaneously.For A phase α axle, the main winding of 4 grades of windings in series diametrically creates biased magnetic flux, the magnetic flux that the diametral load winding of two-stage windings in series diametrically produces produces the effect strengthening and weaken respectively to biased magnetic flux, produce thus rotor level radial suspension force to the right.When radial suspension force winding current is reverse, level radial suspension force left can be produced.Meanwhile, β Axial and radial power can be produced by the radial suspension force winding of main winding and the β axle vertical with α axle.Two power can synthesize the radial suspension force of required any direction.This principle is equally applicable to B phase, C phase.The conducting in turn of three-phase main winding, according to the negative feedback control of stator radial displacement transducer, can produce the continuous radial suspension force needed for stator suspension.
In like manner, for the rotor suspension on axial direction, winding energising outside both sides, after rotor offsets slight distance from balance position toward side, the magnetic pull size that both sides magnet steel is subject to equally does not become not etc. from original, the change of distance detected by displacement detector, correspondingly change the size of both sides winding current, make side ER effect large, side electric current diminishes, make the side magnetic pull of distance become large, diminish apart near side magnetic pull, rotor is withdrawn into axial balance position.Like this, rotor can rotate under magnetic suspension effect, simultaneously axial suspension, and in radial direction, stator suspends, and such wheel High Rotation Speed gets up, and realizes without friction without wearing and tearing High Rotation Speed.
Pass through technique scheme, magnetic suspension motor supporting driving system of the present utility model utilizes magnetic suspension and motor technology by vehicle body suspension, under detecting and controlling system controls, make wheel nave without friction, without abrasively supports electric vehicle body, and drive wheel nave to rotarily drive wheel to travel along ground surface.Magnetic suspension electric vehicle wheel hub motor supporting driving system of the present utility model is achieved between wheel nave and vehicle frame without friction, nothing wearing and tearing supporting by magnetic levitation technology, and rotated by electromagnetic torque direct drive of wheel wheel hub, shorten messenger chain, improve drive efficiency, significantly reduce energy consumption, improve the tractive performance of battery-driven car.
Claims (6)
1. a magnetic suspension switched reluctance motor drive type electric car, comprise wheel and the wheel motor systems being placed in wheel, it is characterized in that, this wheel motor systems comprises with wheel close-connected housing (3), motor shaft (8), be provided with motor stator (7), rotor (6), power commutator and controller (11), detector and left and right magnet steel (4) and left and right outer winding (2) in housing, described detector comprises shaft position sensor (9), radial displacement transducer and tachogen (10);
Together with described motor stator is fixedly sleeved with motor shaft, rotor and housing compact siro spinning technology, and be placed in motor stator outer ring, and leave gap with motor stator; Described left and right magnet steel is placed on rotor arranged on left and right sides end face respectively, and described left and right outer winding is individually fixed in left and right sidewall in housing; Described motor stator end face is fixedly installed radial displacement transducer and tachogen, and the outer winding side of case inside wall is fixedly installed shaft position sensor;
Described rotor is salient-pole structure, and its inner peripheral wall is evenly distributed with the salient-pole structure adopting laminar, and described motor stator adopts salient-pole structure, and its radial outer circle wall is evenly distributed with salient-pole structure; Described housing arranged on left and right sides is equipped with left and right end cap (1) respectively, and motor shaft two ends are arranged on left and right end cap respectively by auxiliary bearing (5).
2. magnetic suspension switched reluctance motor drive type electric car according to claim 1, is characterized in that, described power commutator comprises on-off element, the storage battery of direct supply of generation or rectifier.
3. magnetic suspension switched reluctance motor drive type electric car according to claim 1, is characterized in that, described controller is comprehensive displacement detector, forms by having the microcomputer of stronger information processing capability or digital logic circuit and interface circuit.
4. magnetic suspension switched reluctance motor drive type electric car according to claim 1, it is characterized in that, described motor stator is provided with concentratred winding, and relative two windings in series of motor stator diametric(al) become a phase.
5. magnetic suspension switched reluctance motor drive type electric car according to claim 1, it is characterized in that, described shaft position sensor is fixed on outer winding support.
6. magnetic suspension switched reluctance motor drive type electric car according to claim 1, it is characterized in that, described motor stator be provided with a sensor stand in the radial direction, this support is placed with along the circumferential direction well-distributed radial displacement transducer and tachogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520542248.0U CN204821975U (en) | 2015-07-24 | 2015-07-24 | Electric motor car of magnetic suspension switched reluctance motor drive formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520542248.0U CN204821975U (en) | 2015-07-24 | 2015-07-24 | Electric motor car of magnetic suspension switched reluctance motor drive formula |
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| Publication Number | Publication Date |
|---|---|
| CN204821975U true CN204821975U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520542248.0U Expired - Fee Related CN204821975U (en) | 2015-07-24 | 2015-07-24 | Electric motor car of magnetic suspension switched reluctance motor drive formula |
Country Status (1)
| Country | Link |
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| CN (1) | CN204821975U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108494158A (en) * | 2018-03-30 | 2018-09-04 | 苏州容浦机电科技有限公司 | A kind of magnetic levitation switch reluctance servo motor |
| WO2018228262A1 (en) * | 2017-06-15 | 2018-12-20 | 深圳麦格动力技术有限公司 | Rotary shaft protection and radial displacement detection structure, magnetic suspension motor and household air conditioner |
-
2015
- 2015-07-24 CN CN201520542248.0U patent/CN204821975U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018228262A1 (en) * | 2017-06-15 | 2018-12-20 | 深圳麦格动力技术有限公司 | Rotary shaft protection and radial displacement detection structure, magnetic suspension motor and household air conditioner |
| CN108494158A (en) * | 2018-03-30 | 2018-09-04 | 苏州容浦机电科技有限公司 | A kind of magnetic levitation switch reluctance servo motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20180724 |
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| CF01 | Termination of patent right due to non-payment of annual fee |