CN203326742U - Dual-winding modularization bearing-free flux-switching permanent-magnet motor - Google Patents
Dual-winding modularization bearing-free flux-switching permanent-magnet motor Download PDFInfo
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- CN203326742U CN203326742U CN2013203709190U CN201320370919U CN203326742U CN 203326742 U CN203326742 U CN 203326742U CN 2013203709190 U CN2013203709190 U CN 2013203709190U CN 201320370919 U CN201320370919 U CN 201320370919U CN 203326742 U CN203326742 U CN 203326742U
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Abstract
Disclosed in the utility model is a dual-winding modularization bearing-free flux-switching permanent-magnet motor. The permanent-magnet motor comprises a rotor iron core, a stator iron core, permanent magnets, 4m armature coils and 4m suspension coils, wherein the m indicates the phase number of the motor. The stator iron core and the rotor iron core both have salient pole structures. The stator iron core is formed by alternate splicing of 4m E-shaped iron core units and 4m permanent magnets; the magnetizing directions of the permanent magnets are tangential and the magnetizing directions of the adjacent permanent magnets are opposite to each other. Teeth protruding from the middle of the E-shaped iron core units are stator fault-tolerant teeth; the armature coils and the suspension coils are sleeved at stator permanent teeth; and no coils are arranged at the stator fault-tolerant teeth. The provided motor not only has a simple structure of a bearing-free switch reluctance machine but also has advantages of high efficiency and high power density and the like of a bearing-free rotor permanent magnet type motor; and thus the provided motor has the high theoretical value and the high practical value.
Description
Technical field
The utility model relates to the technical field that motor is manufactured, and particularly firm simple about a kind of rotor, and winding construction is complementary modular without the bearing flux switch permanent magnet motor.
Background technology
Bearing-free motor is the New-type electric machine that integrates rotary actuation and magnetic bearing function, it has not only overcome many limitations of magnetic bearing motor, also has that axial utilance is high, compact conformation, can increase substantially under critical whirling speed, equal axial length advantages such as can increasing substantially power output.Make a general survey of the document of delivering both at home and abroad, adopt the motor type without the bearing technology to mainly contain asynchronous machine, reluctance motor and permagnetic synchronous motor (all referring to the rotor permanent magnet formula, lower same).Without the bearing asynchronous machine is simple in structure with it, reliability is high, be easy to the characteristics such as weak magnetic and become research bearing-free motor type the earliest.But its distinct issues is that its suspending power is controlled and coupling is controlled in torque, rotating speed is easily controlled and is disturbed by suspending power.Bearing-free switch reluctance motor is simple in structure, manufacture and easy to maintenance, and robustness is good, is applicable to the adverse circumstances such as high temperature.But the power density of bearing-free switch reluctance motor and efficiency are difficult to further raising.By contrast, bearing-free permanent magnet synchronous motor is with the advantage such as it is simple in structure, reliable, volume is little, lightweight, efficiency is high and power density is large, have more standby practical advantage in fields such as flywheel energy storage, various high-speed machine tool spindle motor and canned pump class, centrifuge, compressor, high-speed micro hard disk drives, be considered to have most the bearing-free motor of application prospect.Yet, the bearing-free permanent magnet synchronous motor of the employing conventional rotors magneto structure occurred has certain limitation: on the one hand, permanent magnet is mounted on rotor surface or is embedded in the globality structure that rotor has destroyed rotor, and as using at a high speed motor, its rotor is usually all in ultrahigh speed running status (tens thousand of rev/mins even hundreds thousand of rev/mins) even at a high speed, the impact that magnet steel is subject to centrifugal force when preventing that motor from running up gets rid of, the fixture that stainless steel or metallic fiber material are made all is housed on rotor, cause its complex structure, manufacturing cost improves, effective air gap is long, the permanent magnet utilance reduces, on the other hand, permanent magnet is positioned at rotor, cooling condition is poor, the heat radiation difficulty, along with the rising of temperature, cause take neodymium iron boron (NdFeB) as main permanent magnet performance descends, irreversible demagnetization even occurs when serious, restrict the further raising of motor performance, and then limited the application in some occasion without the bearing rotor permanent-magnetic electric machine.
Shortcoming for common rotor permanent magnet type motor, several novel stator permanent magnetic type electrics have appearred in nearly 20 years successively, be about to permanent magnet and be placed in stator, as bisalient-pole permanent-magnet (doubly salient permanent magnet, DSPM) motor, flux-reversal permanent magnetism (flux reversal permanent magnet, FRPM) motor and magnetic flux switching permanent magnetism (flux-switching permanent magnet, FSPM) motor, the common feature of the type motor is exactly that armature winding and the permanent-magnet magnetic steel capital are placed in stator, and on rotor both without winding without permanent magnet, simple in structure, be applicable to high-speed cruising.Be compared to DSPM and FRPM motor, the FSPM motor has that power density is high, efficiency is high, the torque fan-out capability is large, load capacity is strong, can obtain highly the characteristics such as sinusoidal back electromotive force without skewed slot, thereby is considered to most possibly replace a kind of structure of rotor permanent magnet type motor.
To sum up, bearing-free switch reluctance motor and without the bearing rotor permanent-magnetic electric machine has drawback separately: although the former is simple in structure, reliability is high, at aspects such as efficiency, power factors not as magneto; Although the latter has improved efficiency and the power factor of motor, permanent magnet is placed in rotor, and its heat radiation and mechanically stable problem can not be ignored.
The utility model content
The utility model purpose
The deficiency existed in order to overcome prior art, the utility model purpose is that the Magneticflux-switching type bearing-free motor that provides a kind of permanent magnet to be placed in stator is provided, this motor combines the fundamental characteristics of bearing-free motor and stator permanent-magnet flux switch motor, makes that motor has less location torque, power density/efficiency is high and the advantage such as fault freedom is good.
Technical scheme
For achieving the above object, the utility model is achieved by the following technical solution:
A kind of double winding modularization is without the bearing flux switch permanent magnet motor, and this motor comprises rotor core, stator core, permanent magnet, a 4m armature coil and 4m suspended coil, the number of phases that described m is motor; Stator core and rotor core are salient-pole structure, stator core is formed by 4m E shape core unit and 4m permanent magnet alternative splicing, the tooth protruded in the middle of E shape core unit is the stator fault-tolerant teeth, described permanent magnet is arranged between adjacent two E shape iron cores, and the adjacent permanent magnet magnetizing direction is contrary, the magnetizing direction of permanent magnet is tangential, and the permanent magnet of the adjacent protrusion tooth of described adjacent two E shape iron cores and E shape sandwich unshakable in one's determination forms the stator permanent magnet tooth; Armature coil and suspended coil are sleeved on the stator permanent magnet tooth, and described motor makes motor have rotation and suspending power by the interaction of armature coil and suspended coil and permanent magnetic field simultaneously.
As further innovation of the present utility model, described rotor is straight trough or flume structure.
As further innovation of the present utility model, two adjacent permanent magnets adopts and alternately magnetizes.
As further innovation of the present utility model, permanent magnet is neodymium iron boron.
As further innovation of the present utility model, the armature coil in homophase E pattern piece is cascaded mutually.
As further innovation of the present utility model, opposed two of the suspended coil in homophase E pattern piece is cascaded.
As further innovation of the present utility model, stator core is that permeability magnetic material is made.
Beneficial effect:A kind of double winding modularization that the utility model provides, without the bearing flux switch permanent magnet motor, compared with prior art, has following beneficial effect:
1, on rotor not only without winding but also without permanent magnet, have simple in structure, rotor is firm, power density is high, the efficiency advantages of higher;
2, bearing-free switch reluctance motor compact conformation, simple, fault freedom and the good advantage of robust performance have structurally been retained;
3, retained the advantage that the bearing-free permanent magnet synchronous motor loss is little, power density is large, efficiency is high on performance;
4, the armature in motor and suspending windings all adopt concentrated winding, and end is shorter, and loss is lower;
5, adopt the stator fault-tolerant teeth, when having played the alternate physical isolation effect of motor, more realized the decoupling zero of magnetic circuit between each phase of motor;
6, suspended coil, armature coil and permanent magnet three all are placed in stator core, are easy to heat radiation, reliable.
The accompanying drawing explanation
Fig. 1 is that the double winding modularization that proposes of the utility model is without bearing flux switch permanent magnet motor structural representation.
In figure: rotor core 1, stator core 2, stator fault-tolerant teeth 21, permanent magnetism tooth 22, stator permanent magnet tooth 23, permanent magnet 3, armature coil 4, suspended coil 5.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Be illustrated in figure 1 a kind of modularization double winding without the bearing flux switch permanent magnet motor, be specially a threephase stator 12/14 utmost point modularized motor, the number of phases of motor is m, wherein m=3.
This motor comprises rotor core 1 and stator core 2, described rotor core 1 is positioned at the inside of stator core 2, rotor core 1 and stator core 2 are salient-pole structure, described stator core 2 has 4m E shape core unit and 4m staggered being spliced of permanent magnet 3, wherein the magnetizing direction of permanent magnet 3 is tangential, and the magnetizing direction of adjacent permanent magnet 3 is contrary, the tooth protruded in the middle of described E shape core unit is stator fault-tolerant teeth 21, what both sides protruded is 22, one permanent magnets 3 of permanent magnetism tooth and the common formation stator permanent magnet of contacted two permanent magnetism teeth 22 tooth 23 with it; Described armature coils 4 and suspension pitch of the laps 5 are sleeved on stator permanent magnet tooth 23.
In said structure, the first armature coil 401, the 4th armature coil 404, the 7th armature coil 407 and the tenth armature coil 410 are composed in series the A phase, the second armature coil 402, the 5th armature coil 405, the 8th armature coil 408 and the 11 armature coil 411 are composed in series the B phase, and the 3rd armature coil 403, the 6th armature coil 406, the 9th armature coil 409 and the 12 armature coil 412 are composed in series the C phase; Wherein every phase winding is comprised of two armature coils, each armature coil 4 is across on the stator permanent magnet tooth 23 corresponding, 4 two flanges of armature coil distribute in the groove of two of the left and right of corresponding stator permanent magnet tooth 23, spatially vertical with corresponding stator permanent magnet tooth 23.
Suspended coil has 12, and the first suspended coil 501 and the 7th suspended coil 507 are composed in series the X-direction suspending windings of A phase, and the 4th suspended coil 504 and the tenth suspended coil 510 are composed in series the suspending windings of the Y direction of A phase; The second suspended coil 502 and the 8th suspended coil 508 are composed in series the X-direction suspending windings of B phase, and the 5th suspended coil 505 and the 11 suspended coil 511 are composed in series the suspending windings of the Y direction of B phase; The 3rd suspended coil 503 and the 9th suspended coil 509 are composed in series the X-direction suspending windings of C phase, and the 6th suspended coil 506 and the 12 suspended coil 512 are composed in series the suspending windings of the Y direction of C phase; Each suspended coil 5 is across on the stator permanent magnet tooth 23 corresponding, and 5 two flanges of suspended coil distribute in the groove of two of the left and right of corresponding stator permanent magnet tooth 23, spatially vertical with corresponding stator permanent magnet tooth 23.
Rotor core 1 both without permanent magnet also without winding, simple in structure firm; Can straight groove structure or flume structure; E shape core unit and rotor core 1 all adopt silicon steel punched chip or other permeability magnetic material to press folded forming; Permanent magnet 3 is neodymium iron boron or other permanent magnetism material.
Claims (7)
1. a double winding modularization, without the bearing flux switch permanent magnet motor, is characterized in that: this motor comprises rotor core, stator core, permanent magnet, a 4m armature coil and 4m suspended coil, the number of phases that described m is motor; Stator core and rotor core are salient-pole structure, stator core is formed by 4m E shape core unit and 4m permanent magnet alternative splicing, the tooth protruded in the middle of E shape core unit is the stator fault-tolerant teeth, described permanent magnet is arranged between adjacent two E shape iron cores, and the adjacent permanent magnet magnetizing direction is contrary, the magnetizing direction of permanent magnet is tangential, and the permanent magnet of the adjacent protrusion tooth of described adjacent two E shape iron cores and E shape sandwich unshakable in one's determination forms the stator permanent magnet tooth; Armature coil and suspended coil are sleeved on the stator permanent magnet tooth, and described motor makes motor have rotation and suspending power by the interaction of armature coil and suspended coil and permanent magnetic field simultaneously.
2. double winding modularization according to claim 1, without the bearing flux switch permanent magnet motor, is characterized in that: described rotor is straight trough or flume structure.
3. double winding modularization according to claim 1, without the bearing flux switch permanent magnet motor, is characterized in that: two adjacent permanent magnets adopts and alternately magnetizes.
4. double winding modularization according to claim 1, without the bearing flux switch permanent magnet motor, is characterized in that: permanent magnet is neodymium iron boron.
5. double winding modularization according to claim 1, without the bearing flux switch permanent magnet motor, is characterized in that: the armature coil in homophase E pattern piece is cascaded mutually.
6. double winding modularization according to claim 1, without the bearing flux switch permanent magnet motor, is characterized in that: opposed two of the suspended coil in homophase E pattern piece is cascaded.
7. double winding modularization according to claim 1, without the bearing flux switch permanent magnet motor, is characterized in that: described stator core is that permeability magnetic material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203709190U CN203326742U (en) | 2013-06-26 | 2013-06-26 | Dual-winding modularization bearing-free flux-switching permanent-magnet motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203709190U CN203326742U (en) | 2013-06-26 | 2013-06-26 | Dual-winding modularization bearing-free flux-switching permanent-magnet motor |
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| CN203326742U true CN203326742U (en) | 2013-12-04 |
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| CN2013203709190U Expired - Fee Related CN203326742U (en) | 2013-06-26 | 2013-06-26 | Dual-winding modularization bearing-free flux-switching permanent-magnet motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683564A (en) * | 2013-06-26 | 2014-03-26 | 南京信息工程大学 | Double-winding modular bearingless magnetic flux switching permanent magnet motor |
| CN103997176A (en) * | 2014-05-26 | 2014-08-20 | 江苏大学 | Bearingless brushless direct-current motor and levitation force control method |
| CN104113172A (en) * | 2014-07-29 | 2014-10-22 | 西安建筑科技大学 | E-tooth double-rotor flux-switching permanent magnet motor |
| CN105978183A (en) * | 2016-06-28 | 2016-09-28 | 上海电机学院 | Switching flux linkage no-bearing motor |
-
2013
- 2013-06-26 CN CN2013203709190U patent/CN203326742U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683564A (en) * | 2013-06-26 | 2014-03-26 | 南京信息工程大学 | Double-winding modular bearingless magnetic flux switching permanent magnet motor |
| CN103997176A (en) * | 2014-05-26 | 2014-08-20 | 江苏大学 | Bearingless brushless direct-current motor and levitation force control method |
| CN103997176B (en) * | 2014-05-26 | 2016-08-31 | 江苏大学 | A kind of DC motor without bearing and brush and suspending power control method |
| CN104113172A (en) * | 2014-07-29 | 2014-10-22 | 西安建筑科技大学 | E-tooth double-rotor flux-switching permanent magnet motor |
| CN105978183A (en) * | 2016-06-28 | 2016-09-28 | 上海电机学院 | Switching flux linkage no-bearing motor |
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| 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: 20131204 Termination date: 20150626 |
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| EXPY | Termination of patent right or utility model |