CN1412915A - Mixed rotor type bearing-free motor - Google Patents
Mixed rotor type bearing-free motor Download PDFInfo
- Publication number
- CN1412915A CN1412915A CN 02109707 CN02109707A CN1412915A CN 1412915 A CN1412915 A CN 1412915A CN 02109707 CN02109707 CN 02109707 CN 02109707 A CN02109707 A CN 02109707A CN 1412915 A CN1412915 A CN 1412915A
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- rotor
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- type bearing
- winding
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Abstract
The mixed rotor type bearing-free electric machine is formed from shell body, stator, winding, rotor and load. The stator of said electric machine adopts two set of stator windings whose difference of number of poles is 2, its rotor adopts the composite structure formed from permanent magnet and iron core, in the interior of shell body two identical stators are mounted, their interiors contain two identical rotor, they are connected by means of mechanical shaft, the load and rotor shaft also are mechanically connected, and the power supply wire of winding is led out from wall of shell body. Said invention can simultaneously obtain torque and magnetic suspension force indexes, and can implement real time control of machine rotating speed and magnetic suspension force decouple.
Description
Affiliated technical field
The invention belongs to a kind of motor, particularly a kind of mixed rotor type bearing-free motor.
Background technology
If the stator and rotor of magnetic suspension bearing and motor are merged, can make the magnetic field in the motor not only can produce torque, and can also produce controlled radial load.The motor of this dependence magnetic levitation technology support rotor does not need special bearing, belongs to no bearing.Rotor structure form commonly used in the traditional AC motor can become the rotor of bearing-free motor as induction type, reluctance type and magneto rotor, yet the generation of the torque of rotor structure and bearing-free motor and magnetic suspension force is relevant.Comparing result shows that under same volume, surface permanent magnetic rotor and induction rotor can obtain breakdown torque and magnetic suspension force index respectively.Yet, to the rotor of same type can not get both simultaneously breakdown torque and magnetic suspension force.
On the other hand, because magnetic suspension force is to rely on motor stator two cover windings to produce the interaction in magnetic field, there is coupling between two components vertically of magnetic suspension force.So the decoupling zero of magnetic suspension force control is to need another key issue of solving in the bearing-free motor control.Can only realize approximate decoupling zero at present, also not realize the method for full decoupled control based on the parameter of electric machine.
Summary of the invention
Can not get both simultaneously torque and magnetic suspension force index and existing bearing-free motor can not realize the problem of full decoupled control at surperficial magneto rotor and induction rotor, the invention provides the conventional bearing of a kind of cancellation, can not only get both simultaneously torque and magnetic suspension force index, and can realize the mixed rotor type bearing-free motor of rotating speed and magnetic suspension force decoupling zero control.
Bearing-free motor of the present invention is made up of housing, stator, winding, rotor, load etc.Housing can adopt metal or nonmetallic materials to make drum.On housing, have fluid intake and outlet, and leave the power lead via hole.Two identical stators are installed in the housing altogether, and it is overrided to form by electrical steel sheet, and leaves the groove of some, to put into stator winding, be divided in every groove two-layer put into respectively number of poles differ be 2 two the cover stator winding.
Two stators contain two identical rotors, by mechanical axis they are connected.Each rotor all is permanent magnet and the composite construction of forming unshakable in one's determination, and permanent magnet wherein is a NdFeB material, adopts bonding way to be fixed on the armature spindle.Core portion is that electrical steel sheet laminates and makes.Between permanent magnet and core portion, be placed with the sheet interlayer of nonmetallic materials, to prevent the permanent magnet leakage field.Load can be connected with armature spindle by mechanical way.The power lead of winding can be boxed out by housing and be drawn.
Bearing-free motor control of the present invention is divided into rotating speed control and magnetic suspension force control two parts.Frequency Varying and speed changing method is adopted in rotating speed control: a kind of decoupling control method is adopted in magnetic suspension force control.This method is utilized motor rotor design feature of the present invention, and the suspending power winding current is carried out vector control to reach the purpose that realizes magnetic suspension force decoupling zero control.Mainly may further comprise the steps: (a) observation torque winding current vector, locking this current phasor is rotatable coordinate axis d direction of principal axis; (b), suspending power winding current vector is decomposed according to this rotating coordinate system; (c) control two coordinate components of suspending power winding current vector respectively, just can realize two components of independent control magnetic suspension force.
Advantage of the present invention is not only get both simultaneously torque and magnetic suspension force index, and can realize the real-time control of motor speed and magnetic suspension force decoupling zero.The permanent magnetism part is exported torque on the mixed rotor under the effect of stator field, and in order to produce the axial detent force of rotor.Produce the magnetic suspension force of radial support rotor after core portion and the stator field effect.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
Among the figure: 1 iron core, 2 permanent magnets, 3 stator winding, 4 stators, 5 housings, 6 load impellers, 7 fluid issuings, 8 fluid intakes, 9 seal closures, 10 rotor yokes.
Embodiment
As shown in drawings, the present invention is made up of housing 5, stator 4, winding 3, load 6 and rotor.Housing 5 adopts polymethyl methacrylate to make cylindric, have fluid intake 8 at the one end, have fluid issuing 7 in the side of the other end, two identical stators 4 are installed in the housing 5 altogether, stator 4 is overrided to form by electrical steel sheet, and leave the groove of some, put into stator winding 3, be divided into the two-layer two cover stator winding 3 of putting into 4 utmost points and 2 utmost points respectively in every groove, two stators contain two identical rotors, by mechanical axis they are connected, and each rotor is composited by iron core 1 and permanent magnet 2, by mechanical way load is connected with armature spindle, the power line of winding 3 is drawn by the hole on the housing 5.The present embodiment rotor diameter is 16mm, and axial length is 44mm, and permanent magnet 2 is that the Nd-Fe-B permanent magnet tile of 4 block length 5mm, thick 2mm is bonded on the rotor yoke, unshakable in one's determination 1 makes for the electrical steel sheet of 0.5mm laminates, axial length is 5mm, and the long 62mm of whole motor, diameter are 40mm.
Claims (5)
1, a kind of mixed rotor type bearing-free motor, form by housing, stator, winding, rotor, load, it is characterized in that this motor stator adopts number of poles to differ to be 2 two cover windings, rotor adopts permanent magnet and the composite construction of forming unshakable in one's determination, two identical stators are installed in the housing altogether, and two stators contain two identical rotors, by mechanical axis they are connected, load also is connected by mechanical way with armature spindle, and the power lead of winding is drawn by the hole on the housing wall.
2, mixed rotor type bearing-free motor according to claim 1, it is characterized in that said stator is laminated by electrical steel sheet makes, and leave the groove of some, and put into stator winding, be divided in every groove that two-layer to put into respectively that number of poles differs be 2 two cover stator winding.
3, mixed rotor type bearing-free motor according to claim 1, each rotor that it is characterized in that this motor all is permanent magnet and the composite construction of forming unshakable in one's determination, permanent magnetism wherein partly is NdFeB material, adopt bonding way to be fixed on the rotor yoke, iron core is overrided to form by electrical steel sheet.
4, mixed rotor type bearing-free motor according to claim 1 is characterized in that the rotor of said composite construction is provided with the sheet interlayer of nonmetallic materials between its permanent magnet and iron core.
5, mixed rotor type bearing-free motor according to claim 1 is characterized in that having fluid intake and outlet on the housing of this motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02109707 CN1278478C (en) | 2002-05-20 | 2002-05-20 | Mixed rotor type bearing-free motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02109707 CN1278478C (en) | 2002-05-20 | 2002-05-20 | Mixed rotor type bearing-free motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1412915A true CN1412915A (en) | 2003-04-23 |
| CN1278478C CN1278478C (en) | 2006-10-04 |
Family
ID=4740757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02109707 Expired - Fee Related CN1278478C (en) | 2002-05-20 | 2002-05-20 | Mixed rotor type bearing-free motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1278478C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105477706A (en) * | 2016-01-14 | 2016-04-13 | 山东大学 | Double-stator hybrid supporting artificial heart pump |
| CN112117861A (en) * | 2020-09-08 | 2020-12-22 | 华中科技大学 | Flywheel energy storage motor |
| CN113241919A (en) * | 2021-05-27 | 2021-08-10 | 江苏大学 | Bearing-free composite rotor cage type asynchronous motor |
| WO2022198444A1 (en) * | 2021-03-23 | 2022-09-29 | 中国科学院深圳先进技术研究院 | Magnetic levitation system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100432444C (en) * | 2007-01-09 | 2008-11-12 | 南京航空航天大学 | Purifying pump |
-
2002
- 2002-05-20 CN CN 02109707 patent/CN1278478C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105477706A (en) * | 2016-01-14 | 2016-04-13 | 山东大学 | Double-stator hybrid supporting artificial heart pump |
| CN105477706B (en) * | 2016-01-14 | 2018-01-26 | 山东大学 | Bimorph transducer mixing bearing artificial heart pump |
| CN112117861A (en) * | 2020-09-08 | 2020-12-22 | 华中科技大学 | Flywheel energy storage motor |
| CN112117861B (en) * | 2020-09-08 | 2021-08-31 | 华中科技大学 | Flywheel energy storage motor |
| WO2022198444A1 (en) * | 2021-03-23 | 2022-09-29 | 中国科学院深圳先进技术研究院 | Magnetic levitation system |
| CN113241919A (en) * | 2021-05-27 | 2021-08-10 | 江苏大学 | Bearing-free composite rotor cage type asynchronous motor |
| CN113241919B (en) * | 2021-05-27 | 2022-07-22 | 江苏大学 | Bearing-free composite rotor cage type asynchronous motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1278478C (en) | 2006-10-04 |
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| C14 | Grant of patent or utility model | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |