CN206195572U - Two stators do not have bearing magnetic flow reverse motor - Google Patents

Two stators do not have bearing magnetic flow reverse motor Download PDF

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Publication number
CN206195572U
CN206195572U CN201621273851.4U CN201621273851U CN206195572U CN 206195572 U CN206195572 U CN 206195572U CN 201621273851 U CN201621273851 U CN 201621273851U CN 206195572 U CN206195572 U CN 206195572U
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CN
China
Prior art keywords
stator
rotor
suspension
motor
permanent magnet
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201621273851.4U
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Chinese (zh)
Inventor
徐放
贾红云
李�权
袁安富
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Nanjing University of Information Science and Technology
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Nanjing University of Information Science and Technology
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Priority to CN201621273851.4U priority Critical patent/CN206195572U/en
Application granted granted Critical
Publication of CN206195572U publication Critical patent/CN206195572U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a two stators do not have bearing magnetic flow reverse motor, including external stator, rotor, internal stator, permanent magnet, armature winding, suspension winding, the external stator has 6 stator slots, places armature winding specially, and the winding on relative two stator tooths in space is established ties and is constituted looks, wherein all be equipped with armature winding in every stator slot, and the armature winding in the radial relative stator slot establishes ties and be looks, a pair of permanent magnet that is used for producing excitation field is posted to the bottom of every stator slot, and just a pair of permanent magnet polarity of the bottom of same stator slot is opposite, the rotor contains 8 even spacing distribution rotor teeth, is provided with the suspension utmost point of 2 X axle orientations and the suspension utmost point of 2 Y axle orientations on the internal stator equidistantly, is equipped with the suspension winding of realizing the rotor suspension in the suspension extremely. This type of motor has fused two stator motor precision height, the response is fast and magnetic flow reverse motor power density is high, and the magnetic flow is the advantage that the bipolarity changes for the compact structure of motor.

Description

A kind of bimorph transducer bearing-free magnetic flux reverse motor
Technical field
The utility model belongs to Motor Control Field, more particularly to a kind of bimorph transducer bearing-free magnetic flux reverse motor.
Background technology
Magnetic flux reverse motor has that rotor structure is simple, power density is high, inductance is small, inertia is low, is suitable to rotation at a high speed The advantages of occasion.But rotor can cause mechanical bearing to wear and tear in high-speed cruising, shorten the service life of motor, have impact on motor Further development.
Bearing-free motor is the New-type electric machine for integrating rotation driving and magnetic bearing function, and it not only overcomes magnetic bearing Many limitations of motor, also with axial utilization rate is high, compact conformation, critical speed, equal axial length can be increased substantially under can The advantages of increasing substantially power output.
The document delivered both at home and abroad is made a general survey of, the motor type using bearing-free technology mainly has asynchronous machine, reluctance motor And permagnetic synchronous motor(Rotor permanent magnet formula is referred both to, similarly hereinafter).Induction-type bearingless motor is with its simple structure, reliability is high, be easy to The features such as weak magnetic, is as the earliest bearing-free motor type of research.But, its distinct issues is the control of its suspending power and torque Control coupling, rotating speed is easily suspended power control interference.Bearing-free switch reluctance motor simple structure, manufactures and easy to maintenance, Robustness is good, it is adaptable to the adverse circumstances such as high temperature.But, the power density and efficiency of bearing-free switch reluctance motor are difficult into one Step is improved.By contrast, bearing-free permanent magnet synchronous motor is with its simple structure, reliable, small volume, lightweight, efficiency high The advantage such as big with power density, in flywheel energy storage, various high-speed machine tool spindle motors and canned pump class, centrifuge, compressor, height The fields such as fast micro hard disk drive device are more for practical advantage, it is considered to be most have the bearing-free motor of application prospect.So And, the bearing-free permanent magnet synchronous motor of the use conventional rotors magneto structure for having occurred has certain limitation:One side Face, permanent magnet is mounted on rotor surface or is embedded in the globality structure of rotor destruction rotor, and as high speed motor, its Rotor is generally all in high speed even ultrahigh speed running status(Tens thousand of revs/min even hundreds thousand of revs/min), to prevent motor at a high speed Magnet steel is affected by centrifugal force and get rid of during operating, and the fixation that stainless steel or metallic fiber material make is equipped with rotor Device, causes its complex structure, manufacturing cost to improve, and effective air gap is long, the reduction of permanent magnet utilization rate;On the other hand, permanent magnet Positioned at rotor, cooling condition is poor, and radiating is difficult, with the rising of temperature, causes the permanent magnet performance based on neodymium iron boron to decline, Even there is irreversible demagnetization when serious, constrain the further raising of motor performance, and then limit bearing-free rotor permanent magnet Application of the formula motor in some occasions.
Utility model content
Technical problem to be solved in the utility model is directed to some shortcomings that existing motor is present, the utility model mesh Be to provide a kind of armature winding to be decoupled with suspending windings, two kinds of coefficient bimorph transducer bearing-free flux-reversals electricity of winding Machine, the utility model is intended to simplify electric machine structure space, improves the wear problem of electromechanics bearing, and overcomes motor electricity Coupling between magnetic torque and suspending power, increases armature winding, the flexibility of suspending windings control.
The utility model uses following technical scheme to solve above-mentioned technical problem
A kind of bimorph transducer bearing-free magnetic flux reverse motor, the motor includes external stator, rotor and inner stator, described outer fixed Son, rotor and inner stator are concentrically nested successively;The external stator includes 6 stator slots, is wherein equipped with electricity in each stator slot Armature winding series connection in pivot winding, and stator slot diametrically is a phase, the bottom of each stator slot post a pair for The permanent magnet of excitation field is produced, and a pair of permanent magnet polarities of the bottom of same stator slot are opposite;The rotor includes 8 etc. Spacing distribution rotor tooth, is equally spaced 2 the suspension poles and 2 suspension poles of Y direction of X-direction on inner stator, Suspension is extremely provided with the suspending windings for realizing rotor suspension.
It is described outer fixed as a kind of further preferred scheme of bimorph transducer bearing-free magnetic flux reverse motor of the utility model Son, rotor and inner stator are salient-pole structure.
As a kind of further preferred scheme of bimorph transducer bearing-free magnetic flux reverse motor of the utility model, the rotor Pole span is 45 °.
As a kind of further preferred scheme of bimorph transducer bearing-free magnetic flux reverse motor of the utility model, the rotor by Permeability magnetic material is constituted.
As a kind of further preferred scheme of bimorph transducer bearing-free magnetic flux reverse motor of the utility model, the permanent magnet It is made of Nd-Fe-B permanent magnet material.
The utility model uses above technical scheme compared with prior art, with following technique effect:
1st, clear in structure, definite functions:Armature winding on external stator realizes that motor rotates, and the permanent magnet on stator tooth is carried For excitation field, the suspending windings on inner stator realize the suspension function of rotor, are easy to safeguard and control;
Both 2nd, armature winding and suspending windings magnetic circuit are separate, and suspending power is by suspending windings alone bear, it is to avoid Flux coupled, the two in the absence of restricting each other;
3rd, the armature and suspending windings in motor all use concentratred winding, and end is shorter, are lost relatively low;4th, suspending windings, Armature winding and permanent magnet three are placed in stator core, and rotor structure is simple, it is easy to radiate, reliable;
4th, be applied to bearing-free technology in magnetic flux reverse motor by the utility model, is retaining magnetic flux reverse motor Optimality On the basis of energy, the problem that mechanical bearing brings is further obviated, while solving bearing-free motor armature winding magnetic circuit again With the problem of suspending windings magnetic circuit electromagnetic coupled.
Brief description of the drawings
Fig. 1 is the bimorph transducer bearing-free magnetic flux reverse motor structural representation that the utility model is proposed.
Label is specific as follows in figure:1- external stators, 2- rotors, 3- inner stators, 4- permanent magnets, 5- armature winding, 6- suspends Winding.
Specific embodiment
The technical solution of the utility model is described in further detail below in conjunction with the accompanying drawings:
A kind of bimorph transducer bearing-free magnetic flux reverse motor as shown in Figure 1, including 1, rotor 2 of an external stator and one Inner stator 3 constitutes three salient-pole structures, and rotor 2 and inside and outside two stators are concentrically nested.
The external stator 1 includes 6 stator slots, and armature winding 5 is equipped with described each stator slot, each stator slot A pair permanent magnets 4 for producing excitation field are posted in bottom, and a pair of permanent magnet polarities of the bottom of same stator slot are opposite; The rotor includes 8 equidistantly distributed rotor tooths, and rotor polar distance is 45 °, not only without winding but also without permanent magnet on rotor, by magnetic conduction Material to be constituted and be equally spaced 4 suspension poles on inner stator, is divided on X-axis and Y direction, i.e. inner stator and equally spaced being set Be equipped with 2 the suspension poles and 2 suspension poles of Y direction of X-direction, suspension be extremely provided with realize the suspension of rotor suspension around Group.The magnetic flux path of suspending windings does not interfere with each other on armature winding and inner stator on external stator, overcomes torque and suspension portion / coupled problem.Armature winding 5 is located at external stator, and suspending windings 6 are located at inner stator, by double winding armature winding 5 and the interaction of suspending windings 6 and magnetic field of permanent magnet make motor and rotated and suspending power while having, the magnetic flux of armature winding Path and the magnetic flux path independence of suspending windings.The armature winding number of phases is 3, and stator poles are 6, then on stator tooth diametrically Armature winding series connection be a phase.It is separate between the suspending windings when suspension number of poles is 4, individually control each to hang The size of current of floating winding can obtain required radial suspension force.
Wherein, 6 teeth are wrapped armature winding 5 on external stator 1, the first armature winding 51 and the 4th armature winding 54 are gone here and there Joint group is composed in series B phases, the 3rd armature winding 53 and the 6th armature into A phases, the second armature winding 52 and the 5th armature winding 55 Winding 56 is composed in series C phases.The attachment of external stator tooth surface is used for producing the permanent magnet 4 of excitation field, and permanent magnet selects ferrite Or Nd-Fe-B permanent magnet material is made, and under same stator tooth, permanent magnet polarity is opposite.Rotor 2 be salient-pole structure, above both without Winding is again without permanent magnet, simple structure.4 suspension teeth are equally spaced on inner stator 3, wound thereon suspending windings 6, Do not concatenated between each suspending windings.Electric current is passed through to the first suspending windings 61 and the 3rd suspending windings 63, X-direction can be controlled Suspending power, be passed through electric current and can control the suspending power of Y direction to the second suspending windings 62 and the circle of the 4th suspending windings 64.
In sum, the utility model clear in structure, definite functions:Armature winding on external stator realizes that motor rotates, Permanent magnet on stator tooth provides excitation field, and the suspending windings on inner stator realize the suspension function of rotor, be easy to safeguard and Control;Armature winding and suspending windings magnetic circuit are separate, suspending power is by suspending windings alone bear, it is to avoid both magnetic circuits Coupling, the two in the absence of restricting each other;Armature and suspending windings in motor all use concentratred winding, and end is shorter, loss compared with It is low;4th, suspending windings, armature winding and permanent magnet three are placed in stator core, and rotor structure is simple, it is easy to radiate, and operation can Lean on;Be applied to bearing-free technology in magnetic flux reverse motor by the utility model, is retaining the base of magnetic flux reverse motor premium properties On plinth, the problem that mechanical bearing brings is further obviated, while solving bearing-free motor armature winding magnetic circuit and suspension again The problem of winding magnetic circuit electromagnetic coupled.
Better embodiment of the present utility model is the foregoing is only, protection domain of the present utility model is not with above-mentioned reality The mode of applying is limited, as long as the equivalent modification made according to the utility model disclosure of those of ordinary skill in the art or change Change, should all include in the protection domain described in claims.

Claims (5)

1. a kind of bimorph transducer bearing-free magnetic flux reverse motor, it is characterised in that:The motor includes external stator, rotor and inner stator, The external stator, rotor and inner stator are concentrically nested successively;The external stator includes 6 stator slots, wherein in each stator slot It is equipped with armature winding, and armature winding series connection in stator slot diametrically is a phase, the bottom of each stator slot is posted It is used for producing the permanent magnet of excitation field for a pair, and a pair of permanent magnet polarities of the bottom of same stator slot are opposite;The rotor Comprising 8 equidistantly distributed rotor tooths, be equally spaced on inner stator 2 X-directions suspension pole and 2 Y directions Suspension pole, suspension is extremely provided with the suspending windings of realizing rotor suspension.
2. a kind of bimorph transducer bearing-free magnetic flux reverse motor according to claim 1, it is characterised in that:The external stator, Rotor and inner stator are salient-pole structure.
3. a kind of bimorph transducer bearing-free magnetic flux reverse motor according to claim 1, it is characterised in that:The pole of the rotor Away from being 45 °.
4. a kind of bimorph transducer bearing-free magnetic flux reverse motor according to claim 1, it is characterised in that:The rotor is by leading Magnetic material is constituted.
5. a kind of bimorph transducer bearing-free magnetic flux reverse motor according to claim 1, it is characterised in that:The permanent magnet is adopted It is made of Nd-Fe-B permanent magnet material.
CN201621273851.4U 2016-11-25 2016-11-25 Two stators do not have bearing magnetic flow reverse motor Expired - Fee Related CN206195572U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621273851.4U CN206195572U (en) 2016-11-25 2016-11-25 Two stators do not have bearing magnetic flow reverse motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621273851.4U CN206195572U (en) 2016-11-25 2016-11-25 Two stators do not have bearing magnetic flow reverse motor

Publications (1)

Publication Number Publication Date
CN206195572U true CN206195572U (en) 2017-05-24

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CN201621273851.4U Expired - Fee Related CN206195572U (en) 2016-11-25 2016-11-25 Two stators do not have bearing magnetic flow reverse motor

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106411081A (en) * 2016-11-25 2017-02-15 南京信息工程大学 Double-stator bearingless magnetic flux reversal motor
CN108880152A (en) * 2018-07-24 2018-11-23 江苏大学 A kind of bimorph transducer composite excitation magnetic suspension switched reluctance motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106411081A (en) * 2016-11-25 2017-02-15 南京信息工程大学 Double-stator bearingless magnetic flux reversal motor
CN108880152A (en) * 2018-07-24 2018-11-23 江苏大学 A kind of bimorph transducer composite excitation magnetic suspension switched reluctance motor

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170524

Termination date: 20181125

CF01 Termination of patent right due to non-payment of annual fee