CN101030714A - Dual-driven and non-bearing flake motor - Google Patents
Dual-driven and non-bearing flake motor Download PDFInfo
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- CN101030714A CN101030714A CN 200710019259 CN200710019259A CN101030714A CN 101030714 A CN101030714 A CN 101030714A CN 200710019259 CN200710019259 CN 200710019259 CN 200710019259 A CN200710019259 A CN 200710019259A CN 101030714 A CN101030714 A CN 101030714A
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- 230000009977 dual effect Effects 0.000 title claims description 14
- 238000004804 winding Methods 0.000 claims description 17
- 230000004323 axial length Effects 0.000 claims description 5
- 239000000725 suspension Substances 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The invention is concerned with the double-driving non-bearing magnetic suspension slice motor, it is: adds a internal stator in the internal cavity of the rotor based on the non-bearing thin slice motor, the internal column of the rotor processes correspond change (such as the internal side of rotor of the permanent magnetoelectricity motor adds the permanent magnet), forms the double-driving system that drives by the internal stator and the outer stator together. The invention is: the electromagnetism force processes the outer column and the internal column of the rotor after adding the internal stator, improves the power and the power density of the non-bearing slice motor.
Description
One, technical field
The present invention relates to a kind of motor, relate in particular to a kind of no bearing magnetic suspension motor.
Two, background technology
Non-bearing flake motor is a kind of magnetic suspension motor, thus the characteristics that magnetic suspension motor had it all have, as: contactless, do not have wearing and tearing, high rotating speed, a long-life etc.Simultaneously this motor need not extra magnetic bearing again, and axial length is very short again, so that this motor also has is simple in structure, reliability is high, with low cost, axial utilance height, integrated level height, be easier to realize characteristics such as ultrahigh rotating speed.
Non-bearing flake motor is actually the integrated of magnetic bearing and motor.Magnetic suspension can be divided into two kinds of active and passive types by working method.Owing to rely on passive magnetic suspension to realize that the full suspension of five degrees of freedom (comprise x, y, z and around x, y rotates this five degrees of freedom) can not realize that general passive magnetic bearing must be used in combination with active magnetic bearings.
A kind of so just mixing magnetic suspension system of non-bearing flake motor is only being implemented ACTIVE CONTROL in the radial direction, and other each degrees of freedom all adopt driven suspension, and its basic structure as shown in Figure 1.
What the radial suspension system of non-bearing flake motor adopted is no bearing magnetic levitation technology, and this is a kind of active magnetic suspension technology.This technology and the existing identical point of traditional magnetic bearing technology also have difference.Traditional magnetic bearing generally needs a stable bias magnetic field, and this bias magnetic field can be provided also and can be provided by permanent magnetism by electromagnetism.Can utilize in the motor original magnetic field as bias magnetic field? Fig. 2, Fig. 3 have shown this possibility, and in the drawings as can be seen, the generation principle of suspending power is identical with the suspending power generation principle of magnetic bearing.Behind the controlling magnetic field of a pair of utmost point, the symmetrical distribution in magnetic field is broken on the motor-driven magnetic field superposition of two pairs of utmost points, in Fig. 2 after the magnetic field superposition, and the left side field weakening, magnetic field, right side strengthens, and has produced radial load to the right; And in Fig. 3, after the magnetic field superposition, magnetic field, top strengthens, and the bottom field weakening has produced the radial load that makes progress.But the bias magnetic field of driving magnetic field in the motor and magnetic axis load has a basic difference: the driving magnetic field of motor is dynamic change, and bias magnetic field then is static.Magnetic field and dynamic and calculating of torque control decoupling and generation controlling magnetic field that this just requires in the dynamic tracking motor will produce controlling magnetic field dynamically according to the state of driving magnetic field in other words.
Axially and the suspension on the torsional direction then be the character of having utilized the axial length of thin-sheet motor rotor the trend that makes magnetic circuit magnetic resistance minimum always to be arranged than the much smaller design feature of diameter and reluctance force.As shown in Figure 4, when rotor generation axial dipole field, magnetic pull always pulls to rotor the direction of magnetic resistance minimum and draws; And when twisting, in like manner also can produce corresponding magnetic pull square to force rotor to get back to the equilbrium position, as shown in Figure 5.
In sum, two of the non-bearing flake motor the rotor radially degree of freedom, an axial freedom and two torsional direction degrees of freedom, totally five degrees of freedom have all obtained restriction, have only discharged a rotary freedom, thereby have constituted a five-freedom degree full-suspension rotary system.
But non-bearing flake motor exists fatal defective, promptly because electromagnetic force only can act on the external cylindrical surface of rotor, adds that the axial length of thin-sheet motor is very little, and the power of thin-sheet motor is difficult to improve the shortcoming low with power density.
Three, summary of the invention
1, goal of the invention: the problem to be solved in the present invention is to improve the power and the power density of non-bearing flake motor.
2, technical scheme: the present invention has increased an internal stator on the basis of non-bearing flake motor, the inner cylinder face of rotor is done corresponding change (as: magneto is then set up permanent magnet in the rotor inboard), forms the dual drive system that internal stator and external stator drive rotor jointly.Concrete structure is: comprise stator, the rotor be made up of stator core and stator winding, it is characterized in that, also being included in the rotor inboard is provided with the internal stator of being made up of stator core and stator winding or is provided with the external stator of being made up of stator core and stator winding outside rotor, the dual-driven and non-bearing flake motor that external stator drives the rotor rotation simultaneously and suspends in constituting.
After increasing an internal stator, electromagnetic force acts on the external cylindrical surface and inner cylinder face of rotor simultaneously, improves suspending power, has improved the power and the power density of non-bearing flake motor.
Four, description of drawings
Fig. 1 is the non-bearing flake motor structure chart.
Fig. 2 is no bearing schematic diagram x direction suspending power.
Fig. 3 is no bearing schematic diagram y direction suspending power.
Fig. 4 is axial driven suspension power.
Fig. 5 is the driven suspension power of reverses direction.
Fig. 6 is the dual-driven and non-bearing flake motor sectional structure chart.
Number in the figure meaning: 1-external stator, 2-rotor, 3-internal stator, 4-external stator winding, 5-internal stator winding
Five, embodiment
As shown in Figure 6, dual-driven and non-bearing flake motor of the present invention mainly is made up of internal stator 3, external stator 1, rotor 2 three parts, and its design feature is that axial length is much smaller than rotor diameter, generally below 1: 3.In can regarding as, dual-driven and non-bearing flake motor transfers to the combination of motor and external rotor electric machine.According to above-mentioned principle, concrete execution mode is varied:
1. two driving bearing-free permanent magnet thin-sheet motors: rotor inside and outside circle cylinder is equipped with permanent magnet and constitutes p-m rotor, and interior external stator can be that distributed winding also can be centralized winding.Inside and outside stator winding can drive respectively also and can be connected in series or connect together, and drives together.
2. two drivings do not have bearing mouse cage thin-sheet motor: rotor inside and outside circle cylinder is equipped with mouse cage, and interior external stator can be that distributed winding also can be centralized winding.Inside and outside stator winding can drive respectively also and can be connected in series or connect together, and drives together.
3. two drivings do not have bearing magnetic resistance thin-sheet motor: the air gap of rotor inside and outside circle cylinder is all inhomogeneous, constitutes reluctance rotor, and interior external stator can be that distributed winding also can be centralized winding.Inside and outside stator winding can drive respectively also and can be connected in series or connect together, and drives together.
Except that above-mentioned several execution modes, rotor inner and outer rotors face can be different motor types, as: lateral surface is a permanent-magnet type, and medial surface is a cage induction motor, or the like.Above-mentioned is several representative instance of the present invention, is familiar with those of ordinary skill in the art and can does to change design to the present invention from the structure to the parameter under lodestar of the present invention.According to above-mentioned principle, the mode that drives simultaneously inside and outside this is not limited to laminar bearing-free motor, also can be applicable to common bearing-free motor.
Claims (6)
1, a kind of dual-driven and non-bearing flake motor, comprise stator, the rotor formed by stator core and stator winding, it is characterized in that, also being included in rotor (2) inboard is provided with the internal stator of being made up of stator core and stator winding (3) or is provided with the external stator of being made up of stator core and stator winding (1) outside rotor (2), the dual-driven and non-bearing flake motor that external stator drives rotor (2) rotation simultaneously and suspends in constituting.
2, dual-driven and non-bearing flake motor as claimed in claim 1 is characterized in that, the ratio of the axial length of motor and rotor diameter is less than 0.33.
3, dual-driven and non-bearing flake motor as claimed in claim 1 or 2 is characterized in that, rotor inside and outside circle cylinder is equipped with permanent magnet and constitutes p-m rotor.
4, dual-driven and non-bearing flake motor as claimed in claim 1 or 2 is characterized in that, rotor inside and outside circle cylinder is equipped with mouse cage.
5, dual-driven and non-bearing flake motor as claimed in claim 1 or 2 is characterized in that, the air gap of rotor inside and outside circle cylinder is all inhomogeneous, constitutes reluctance rotor.
6, dual-driven and non-bearing flake motor as claimed in claim 1 or 2 is characterized in that, the rotor inner cylinder face is provided with permanent magnet, and the rotor external cylindrical surface is provided with mouse cage, otherwise perhaps, promptly the rotor external cylindrical surface is provided with permanent magnet, and the rotor inner cylinder face is provided with mouse cage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710019259 CN101030714A (en) | 2007-01-09 | 2007-01-09 | Dual-driven and non-bearing flake motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710019259 CN101030714A (en) | 2007-01-09 | 2007-01-09 | Dual-driven and non-bearing flake motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101030714A true CN101030714A (en) | 2007-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710019259 Pending CN101030714A (en) | 2007-01-09 | 2007-01-09 | Dual-driven and non-bearing flake motor |
Country Status (1)
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| CN (1) | CN101030714A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522858A (en) * | 2011-12-20 | 2012-06-27 | 青岛海立美达电机有限公司 | Split-type magnetic suspension motor and assembling method thereof |
| CN103023265A (en) * | 2012-12-28 | 2013-04-03 | 江苏大学 | Bearingless permanent magnet slice motor |
| CN103618424A (en) * | 2013-12-02 | 2014-03-05 | 南京工程学院 | Double-stator magnetic suspension switch reluctance starting/power generation machine |
| US20140062239A1 (en) * | 2011-05-20 | 2014-03-06 | Levitronix Gmbh | Rotational machine as well as apparatus having a rotational machine |
| CN111064331A (en) * | 2019-12-23 | 2020-04-24 | 江苏大学 | Bearingless permanent magnet sheet motor with double-stator structure |
| CN116094253A (en) * | 2023-04-12 | 2023-05-09 | 苏州苏磁智能科技有限公司 | Single-winding magnetic suspension motor with magnetic protection structure and magnetic suspension equipment |
-
2007
- 2007-01-09 CN CN 200710019259 patent/CN101030714A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140062239A1 (en) * | 2011-05-20 | 2014-03-06 | Levitronix Gmbh | Rotational machine as well as apparatus having a rotational machine |
| CN102522858A (en) * | 2011-12-20 | 2012-06-27 | 青岛海立美达电机有限公司 | Split-type magnetic suspension motor and assembling method thereof |
| CN102522858B (en) * | 2011-12-20 | 2015-02-11 | 青岛海立美达电机有限公司 | Split-type magnetic suspension motor and assembling method thereof |
| CN103023265A (en) * | 2012-12-28 | 2013-04-03 | 江苏大学 | Bearingless permanent magnet slice motor |
| CN103618424A (en) * | 2013-12-02 | 2014-03-05 | 南京工程学院 | Double-stator magnetic suspension switch reluctance starting/power generation machine |
| CN103618424B (en) * | 2013-12-02 | 2016-08-17 | 南京工程学院 | A kind of Double-stator magnetic suspension switch reluctance starting/power generation machine |
| CN111064331A (en) * | 2019-12-23 | 2020-04-24 | 江苏大学 | Bearingless permanent magnet sheet motor with double-stator structure |
| CN116094253A (en) * | 2023-04-12 | 2023-05-09 | 苏州苏磁智能科技有限公司 | Single-winding magnetic suspension motor with magnetic protection structure and magnetic suspension equipment |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |