CN206533262U - A kind of simplex winding DC motor without bearing and brush - Google Patents
A kind of simplex winding DC motor without bearing and brush Download PDFInfo
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- CN206533262U CN206533262U CN201720182374.9U CN201720182374U CN206533262U CN 206533262 U CN206533262 U CN 206533262U CN 201720182374 U CN201720182374 U CN 201720182374U CN 206533262 U CN206533262 U CN 206533262U
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Abstract
The utility model proposes a kind of new simplex winding DC motor without bearing and brush, stator and rotor are provided with its electric machine casing, stator is arranged on the periphery of rotor, the coaxial inner sleeve rotating shaft of stator yoke；Stator is along the circumferential direction divided on four sections of stator units, every section of stator unit three stator tooths that are equally spaced, altogether 12 stator tooths；Three stator salient poles of every section of stator unit are respectively around equipped with three-phase windings, dc source is adjusted through control module and powered, realize motor torque simultaneously by the way of simplex winding and suspend and control, the utility model can simplify the structure of DC motor without bearing and brush, mitigate motor weight and reduction control difficulty.
Description
Technical field
The utility model is related to a kind of motor, more particularly to a kind of DC motor without bearing and brush, be a kind of simplex winding forever
The three-phase DC motor without bearing and brush of magnetic rotor structure.
Background technology
DC motor without bearing and brush is that bearing-free technology is applied into a kind of Novel electric formed by brshless DC motor
Machine, is provided simultaneously with bearing-free technology and the advantage of brshless DC motor, blood pump, high speed/Ultracentrifuge, dentistry and
Operation is widely used with the biomedical sectors such as high speed utensil and flywheel energy storage new energy field.
In existing technology, DC motor without bearing and brush has a double winding, a set of levitation force winding and a set of turn
Away from winding, double winding shares stator core, under the control of electric machine control system, each leads into electric current, resulting magnetic
Field the suspension and rotation of rotor, in p-m rotor, are realized by air gap collective effect.But it is due to it use double winding, electricity
Machine structure is complex and control difficulty is larger.
Utility model content
The purpose of this utility model is to provide a kind of new simplex winding DC motor without bearing and brush, due to simplex winding
Winding method, simplifies electric machine structure, alleviates motor weight and reduces control difficulty.In order to simplify bearing-free brushless direct-current
The electric machine structure of motor, improves its service behaviour, and the utility model only carrys out turn of controlled motor simultaneously using a set of machine winding
Square and suspending power, simplify electric machine structure and reduce the complexity of control system, while it is brushless straight to improve bearing-free
Flow the performance of motor.
To achieve the above object, the utility model is adopted the following technical scheme that：A kind of simplex winding bearing-free brushless dc
Machine, is made up of motor body and its detecting and controlling system, the motor body, including housing, and stator and rotor are provided with housing,
Case inside is made up of four arcses stator unit, is had respectively on each stator unit in three stator tooths, bore of stator and is set
There is rotor, radially uniform be distributed with four durface mounted permanent magnet bodies, four arcses stator unit of rotor outer periphery is respectively uniformly distributed
Three stator tooths, phase winding is installed around on the stator teeth；It is symmetrical that four arcses stator unit is divided into two vertical pairs, controls respectively
The suspending power in x, y direction, while there is three stator tooths on every section of stator unit, three-phase sequential electric current is passed through on three stator tooths,
The output of controlled motor torque simultaneously.
During utility model works, dc source is adjusted by detecting and controlling system, is adjusted by dc source through inverter
Power supply, according to the rotor-position detected, the electric current exported when adjusting respective rotor position by PID needed for three-phase current is big
It is small.Torque suspending windings are made up of ABC three-phase windings, are made up of respectively four coils per phase winding, winding according to A1, B1, C1,
The order of A2, B2, C2, A3, B3, C3, A4, B4, C4 coil is wound on stator tooth in the counterclockwise direction successively.
Electric current is chronologically passed through to the three-phase windings in each section of circular arc stator unit, rotor can be driven positive or reverse
Rotate.The data fed back by radial direction eddy current displacement sensor, the differential symmetrical circular arc stator unit electric current of change it is big
It is small, to adjust the size of suspension radial load, balance rotor radial power to ensure the balance of rotor.Ensureing the basic torque of motor
The control of suspending power is realized while control to balance the radial load of rotor.
The beneficial effects of the utility model are：Because the utility model employs the winding method of simplex winding, electricity is reduced
Winding quantity needed for machine, simplifies electric machine structure, alleviates motor weight and reduces control difficulty.
Brief description of the drawings
Fig. 1 is the winding layout drawing of the utility model simplex winding DC motor without bearing and brush
In figure：1- housings；2- stator yokes；3- torque suspending windings；4- stator tooths；5- rotating shafts；6- durface mounted permanent magnet bodies；
7- rotor cores.
Fig. 2 (1), (2), (3), (4), (5), (6) are the AB in A, B, BC, C respectively, and suspending power is produced when CA phases are powered
Phase diagram.
Embodiment
Referring to Fig. 1, motor is by housing 1, stator yoke 2, stator tooth 4, durface mounted permanent magnet body 6, rotating shaft 5, torque suspend around
Group 3, rotor core 7 is constituted.Stator yoke 2 is cylindrical shape, package packing rotating shaft in stator yoke 2, rotating shaft surface rotor bushing iron core,
Permanent magnet is uniformly arranged on rotor core with surface-mount type, adjacent permanent magnets opposite polarity.Stator yoke 2, rotating shaft 5, rotor iron
The three of core 7 is coaxial, and stator yoke is divided into four arcses stator unit.There are three stator tooths on every section of circular arc stator unit, amount to
12 stator tooths.Torque suspending windings are wound on the stator teeth.
Torque suspending windings, using short distance winding, are made up of A, B, C three-phase windings composition per phase winding four coils,
Wherein, A phase windings are made up of A1, A2, A3, A4 coil；B phase windings are made up of B1, B2, B3, B4 coil；C phases around
Group is by C1, C2, C3, C4 coils composition, altogether 12 coils, this 12 coils according to A1, B1, C1, A2, B2, C2, A3, B3,
C3, A4, B4, C4 order are distributed on corresponding stator tooth clockwise, and each coil is independently-powered.
When motor works, the power-up sequence of three-phase torque 12 coils of suspending windings is determined by rotor current angle position θ,
Concrete mode is as described below：When rotor angle is located at 0 ° ~ 15 °, 90 ° ~ 105 °, 180 ° ~ 195 °, 270 ° ~ 285 °, A phases are powered,
AB is powered simultaneously at 15 ° ~ 30 °, 105 ° ~ 120 °, 195 ° ~ 210 °, 285 ° ~ 290 °, 30 ° ~ 45 °, 120 ° ~ 135 °, 210 ° ~
B phases are powered at 225 °, 300 ° ~ 315 °, and BC is powered simultaneously at 45 ° ~ 60 °, 135 ° ~ 150 °, 225 ° ~ 240 °, 315 ° ~ 330 °, 60 °
C phases are powered at ~ 75 °, 150 ° ~ 165 °, 240 ° ~ 255 °, 330 ° ~ 345 °, 75 ° ~ 90 °, 165 ° ~ 180 °, 255 ° ~ 270 °, 345 ° ~
CA is powered simultaneously at 360 °.
The size of current of each coil electricity according to x, air-gap separation that y-axis direction eddy current displacement sensor is detected and
Rotor angular position thetar is determined.Different phse conversion modes are determined according to different rotor angular position thetars, differential regulation is with flat
The radial load of weighing apparatus rotor.Phse conversion mode is as shown in Table 1
F is obtained according to the conversion of above-mentioned mapping modex, Fy, then pass through suspension control module calculating output currenti x ,i y .Again
Differential regulation is carried out by differential adjustment module, specific regulative mode is as described belowi A Pass throughi x Differential regulation outputi A1 =i A +i x ,i A3 =i A -i x , pass throughi y Differential regulation outputi A2 =i A +i y ,i A4 =i A -i y 。i B Pass throughi x Differential regulation outputi B1 =i B +i x ,i B3 =i B -i x , pass throughi y Differential regulation outputi B2 =i B +i y ,i B4 =i B -i y 。i C Pass throughi x Differential regulation outputi C1 =i C +i x ,i C3 =i C -i x , pass throughi y Differential regulation outputi C2 =i C +i y ,i C4 =i C -i y .Amount to outputi A1 ,i A2 ,i A3 ,i A4 ,i B1 ,i B2 ,i B3 ,i B4 ,i C1 ,i C2 ,i C3 ,i C4 12 groups of electric currents altogether.It is respectively outputted to four circular arc stators of correspondence and amounts to 12 phase coil winding A1,
A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4On.Thus it can reach the purpose of this utility model.
Claims (4)
1. a kind of simplex winding DC motor without bearing and brush, including housing（1）, housing（1）It is interior to be provided with stator and rotor, its feature
It is：Housing（1）Inner side sets cylindrical stator yoke（2）, stator yoke（2）Along the circumferential direction it is divided into four arcses stator
There are three stator tooths on unit, every section of circular arc stator unit（4）, three stator tooths of every section of circular arc stator unit（4）On install around
There are three-phase torque suspending windings（3）；One group of electric current chronologically changed is connected with the phase winding correspondence of circular arc stator unit defeated
Go out unit to realize the direct torque of motor；Stator yoke（2）Rotor, rotor, stator yoke are set in inner chamber（2）Coaxially set
Put, rotor outer periphery is radially uniform to be distributed with four durface mounted permanent magnet bodies（6）；Four arcses stator unit controls x, y directions respectively
Suspending power, while three-phase sequential electric current is passed through on three stator tooths on every section of circular arc stator unit, while controlled motor turns
Square is exported.
2. simplex winding DC motor without bearing and brush according to claim 1, it is characterised in that：The motor also includes inspection
Control unit is surveyed, detection control unit includes x, y directions displacement transducer, angle of rotor detection Hall sensor, direct torque
Module, suspension control module, current differential adjustment module and current output unit；X, y direction sensor and Hall sensor
Rotor displacement and angle position signal are detected, the calculating that suspension control module carries out levitating current is passed it to, suspend electricity
The electric current that stream is exported with torque control module carries out differential regulation by current differential adjustment module, makes symmetrical in X or Y-direction
One end electric current increase of circular arc stator unit, other end electric current reduces, and radial load and the rotor radial power of generation balance each other, and make to turn
Son is suspended in its centre of gyration, and the suspension control of rotor is realized with this.
3. simplex winding DC motor without bearing and brush according to claim 1, it is characterised in that：The torque suspending windings
（3）Be made up of, four coils be made up of respectively per phase winding ABC three-phase windings, winding according to A1, B1, C1, A2, B2, C2, A3,
The order of B3, C3, A4, B4, C4 coil is wound in stator tooth in the counterclockwise direction successively（4）On, each coil is independently-powered.
4. simplex winding DC motor without bearing and brush according to claim 1, it is characterised in that：The rotor includes rotating shaft
（5）, rotor core（7）, stator yoke（2）Interior package packing rotating shaft（5）, rotating shaft（5）Surface rotor bushing iron core（7）, permanent magnet（6）
Rotor core is uniformly arranged on surface-mount type（7）On, adjacent permanent magnet（6）Opposite polarity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720182374.9U CN206533262U (en) | 2017-02-28 | 2017-02-28 | A kind of simplex winding DC motor without bearing and brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720182374.9U CN206533262U (en) | 2017-02-28 | 2017-02-28 | A kind of simplex winding DC motor without bearing and brush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206533262U true CN206533262U (en) | 2017-09-29 |
Family
ID=59916930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720182374.9U Expired - Fee Related CN206533262U (en) | 2017-02-28 | 2017-02-28 | A kind of simplex winding DC motor without bearing and brush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206533262U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106936285A (en) * | 2017-02-28 | 2017-07-07 | 扬州大学 | Simplex winding DC motor without bearing and brush and its torque suspension control method |
| CN108852247A (en) * | 2018-06-04 | 2018-11-23 | 彭希南 | A kind of electric shoes polisher |
-
2017
- 2017-02-28 CN CN201720182374.9U patent/CN206533262U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106936285A (en) * | 2017-02-28 | 2017-07-07 | 扬州大学 | Simplex winding DC motor without bearing and brush and its torque suspension control method |
| CN108852247A (en) * | 2018-06-04 | 2018-11-23 | 彭希南 | A kind of electric shoes polisher |
| CN108852247B (en) * | 2018-06-04 | 2019-11-12 | 彭希南 | A kind of electric shoes polisher |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170929 Termination date: 20200228 |
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| CF01 | Termination of patent right due to non-payment of annual fee |