CN203984203U - A kind of fault tolerant type simplex winding permanent-magnetic electric machine with bearing - Google Patents
A kind of fault tolerant type simplex winding permanent-magnetic electric machine with bearing Download PDFInfo
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- CN203984203U CN203984203U CN201420213745.1U CN201420213745U CN203984203U CN 203984203 U CN203984203 U CN 203984203U CN 201420213745 U CN201420213745 U CN 201420213745U CN 203984203 U CN203984203 U CN 203984203U
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- winding
- armature
- stator yoke
- fault
- rotating shaft
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Abstract
The utility model discloses a kind of fault tolerant type simplex winding permanent-magnetic electric machine with bearing, stator yoke is cylindrical shape, be positioned at the most external of magneto, rotating shaft and stator yoke concentric, be positioned at the middle, inside of stator yoke, on the external peripheral surface of rotating shaft, be fixed with the rotor core with rotating shaft concentric, on the external peripheral surface of rotor core, be fixed with the outer surface that adopts Halbach array structure to be uniformly distributed in rotor core and form columnar a plurality of permanent magnet; On the inner peripheral surface of stator yoke, be evenly fixed with along the circumferential direction alternatively distributed 6 armature tooths and 6 fault-tolerant teeths, on each armature tooth, be wound with a set of for produce the armature winding of torque and radial suspension force simultaneously; Every cover armature winding adopts concentrates short distance winding construction, and every phase control electric current controls current component by torque winding and suspending power winding control current component is formed by stacking; Only need a set of armature winding, simple in structure, alleviate motor weight, improve the ability of motor tape jam suspension operation.
Description
Technical field
The utility model relates to electrician, motor, magnetic levitation technology field, refers in particular to a kind of permanent-magnetic electric machine with bearing, is applicable to Digit Control Machine Tool and directly drives the directly special dimension such as main shaft, flywheel energy storage system.
Background technology
Utilize the similitude of magnetic suspension bearing (referred to as magnetic bearing) coil (or being called winding) and traditional permanent magnet motor stator structure, by magnetic bearing coil lap wound in the stator slot of magneto, by amplitude and the phase angle of effective control double winding electric current, just can realize the stable suspersion operation of rotating shaft, form the permanent-magnetic electric machine with bearing of novel structure.Permanent-magnetic electric machine with bearing possessed simultaneously magnetic bearing without fretting wear, without lubricated, machinery-free noise, life-span long, and the high density of magneto, high efficient and reliable, without series of advantages such as excitations, at special dimensions such as high speed and super precision Digit Control Machine Tool, Aero-Space, Fly wheel energy storage systems, have broad application prospects.
At present, traditional double winding (being torque winding and the suspending power winding) control mode of the general employing of permanent-magnetic electric machine with bearing, two different magnetic fields that produce in air gap by double winding are realized the rotor of permanent-magnetic electric machine with bearing from suspending and torque actuated simultaneously.Yet there is following drawback in the structure of double winding: 1. winding construction is complicated, and stator side power loss is large; 2. between double winding, need strict insulation, thereby increase insulating material, cause larger leakage field, reduce copper factor, have a strong impact on motor performance; 3. bearing-free motor is strict to the requirement of double winding, needs the A phase axis of double winding strictly to overlap, thereby increases motor manufacture difficulty, is unfavorable for that bearing-free motor moves towards practical.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiency of permanent-magnetic electric machine with bearing in above-mentioned prior art, propose that a kind of reliability is high, simple and compact for structure, volume is little, lightweight, power density is high, loss is low, be easy to make, have the simplex winding permanent-magnetic electric machine with bearing of fault tolerance, and further improve its fault freedom, improve its ability that operates with failure.
For achieving the above object, the technical solution adopted in the utility model is: comprise stator yoke and rotating shaft, stator yoke is cylindrical shape, be positioned at the most external of magneto, rotating shaft and stator yoke concentric, be positioned at the middle, inside of stator yoke, on the external peripheral surface of rotating shaft, be fixed with the rotor core with rotating shaft concentric, on the external peripheral surface of rotor core, be fixed with the outer surface that adopts Halbach array structure to be uniformly distributed in rotor core 7 and form columnar a plurality of permanent magnet; On the inner peripheral surface of stator yoke, be evenly fixed with along the circumferential direction alternatively distributed 6 armature tooths and 6 fault-tolerant teeths, on each armature tooth, be wound with a set of for produce the armature winding of torque and radial suspension force simultaneously; Between the external peripheral surface of armature tooth, fault-tolerant teeth and permanent magnet, leave radial clearance.
Further, the electric current that the armature winding on 6 armature tooths passes into is followed successively by:
, wherein,
be respectively three-phase torque winding and control current component,
be respectively three-phase suspending power winding and control current component, and the difference of the number of pole-pairs of torque winding control current component and suspending power winding control current component is
.
The beneficial effects of the utility model are:
1, in stator slot, only have a set of winding, and adopt concentrated short distance winding, end is shorter, and winding construction is simply compact, is easy to fabrication and installation.
2, the utlity model has the features such as copper factor is higher, and leakage field is lower, can effectively reduce motor stator side power loss, thereby improve electric efficiency.
3, do not have the fault-tolerant teeth of coiling both to can be used as the loop of magnetic flux, can play isolation yet, effectively realized the isolation between magnetic circuit, circuit, temperature.When motor is a certain while breaking down mutually, fault-tolerant teeth can provide magnetic loop to reduce motor mutual inductance, reduces the impact on other phase windings, has improved the ability of motor tape jam suspension operation.
4, permanent magnet adopts Halbach array structure, and this structure has good poly-magnetic function, not only can strengthen air gap flux density, increases radial suspension force and electromagnetic torque, can also further reduce motor noise, saves the consumption of permanent magnetic material, alleviates motor weight.
Accompanying drawing explanation
Fig. 1 is the structure diagram of the utility model fault tolerant type simplex winding permanent-magnetic electric machine with bearing;
Number in the figure and name are called: 1. stator yoke; 2. armature tooth; 3. fault-tolerant teeth; 4. armature winding; 5. permanent magnet; 6. rotating shaft; 7. rotor core.
Embodiment
As shown in Figure 1, the utility model fault tolerant type simplex winding permanent-magnetic electric machine with bearing, comprises stator yoke 1, armature tooth 2, fault-tolerant teeth 3, armature winding 4, permanent magnet 5, rotating shaft 6 and rotor core 7.Stator yoke 1 is cylindrical shape, by electrical steel sheet, is laminated and is made, and is positioned at the most external of whole motor; Rotating shaft 6 and stator yoke 1 concentric, be positioned at the middle, inside of stator yoke 1; Fixed rotor iron core 7 on the external peripheral surface of rotating shaft 6, rotor core 7 and rotating shaft 6 concentrics; On the external peripheral surface of rotor core 7, fix a plurality of permanent magnets 5, a plurality of permanent magnets 5 are all made with the Nd-Fe-Bo permanent magnet material with high-coercive force and high residual flux density, form cylindrical shape, adopt Halbach array structure to be uniformly distributed in the outer surface of rotor core 7.
On the inner peripheral surface of stator yoke 1, evenly fixing 6 armature tooths 2 and 3,6 armature tooths 2 of 6 fault-tolerant teeths and 6 fault-tolerant teeths 3 is along the circumferential direction alternately distributed.On each armature tooth 2, be only wound with a set of armature winding 4 for produce torque and radial suspension force simultaneously; On fault-tolerant teeth 3 without armature winding 4.
Between armature tooth 2, fault-tolerant teeth 3 and permanent magnet 5 external peripheral surfaces, leave radial clearance, radial clearance is 1～2mm.The width that is positioned at the armature tooth 2 on same circumference is 1.5 times of width of fault-tolerant teeth 3.
Every cover armature winding 4 all adopts concentrates short distance winding, and every phase control electric current controls current component by torque winding and suspending power winding control current component is formed by stacking.The electric current that armature winding 4 on 6 armature tooths 2 passes into is followed successively by:
, wherein,
be respectively three-phase torque winding and control current component,
be respectively three-phase suspending power winding and control current component, and the difference of the number of pole-pairs of torque winding control current component and suspending power winding control current component is
.
According to the above, just can realize the utility model.The other changes and modifications that those skilled in the art is made in the situation that not deviating from spirit of the present utility model and protection range, within being still included in the utility model protection range.
Claims (4)
1. a fault tolerant type simplex winding permanent-magnetic electric machine with bearing, comprise stator yoke (1) and rotating shaft (6), stator yoke (1) is cylindrical shape, be positioned at the most external of magneto, rotating shaft (6) and stator yoke (1) concentric, be positioned at the middle, inside of stator yoke (1), it is characterized in that: on the external peripheral surface of rotating shaft (6), be fixed with the rotor core (7) with rotating shaft (6) concentric, on the external peripheral surface of rotor core (7), be fixed with the outer surface that adopts Halbach array structure to be uniformly distributed in rotor core (7) and form columnar a plurality of permanent magnet (5), on the inner peripheral surface of stator yoke (1), be evenly fixed with along the circumferential direction alternatively distributed 6 armature tooths (2) and 6 fault-tolerant teeths (3), on each armature tooth (2), be wound with a set of for produce the armature winding (4) of torque and radial suspension force simultaneously, between the external peripheral surface of described armature tooth (2), fault-tolerant teeth (3) and permanent magnet (5), leave radial clearance.
2. a kind of fault tolerant type simplex winding permanent-magnetic electric machine with bearing according to claim 1, is characterized in that: the electric current that the armature winding (4) on 6 armature tooths (2) passes into is followed successively by:
,
be respectively three-phase torque winding and control current component,
be respectively three-phase suspending power winding and control current component, and the difference of the number of pole-pairs of torque winding control current component and suspending power winding control current component is
.
3. a kind of fault tolerant type simplex winding permanent-magnetic electric machine with bearing according to claim 1, is characterized in that: the width that is positioned at the armature tooth (2) on same circumference is 1.5 times of width of fault-tolerant teeth (3).
4. a kind of fault tolerant type simplex winding permanent-magnetic electric machine with bearing according to claim 1, is characterized in that: described radial clearance is 1～2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213745.1U CN203984203U (en) | 2014-04-29 | 2014-04-29 | A kind of fault tolerant type simplex winding permanent-magnetic electric machine with bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213745.1U CN203984203U (en) | 2014-04-29 | 2014-04-29 | A kind of fault tolerant type simplex winding permanent-magnetic electric machine with bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203984203U true CN203984203U (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420213745.1U Expired - Fee Related CN203984203U (en) | 2014-04-29 | 2014-04-29 | A kind of fault tolerant type simplex winding permanent-magnetic electric machine with bearing |
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|---|---|
| CN (1) | CN203984203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929035A (en) * | 2014-04-29 | 2014-07-16 | 江苏大学 | Fault-tolerant type single-winding bearing-less permanent magnet motor |
-
2014
- 2014-04-29 CN CN201420213745.1U patent/CN203984203U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929035A (en) * | 2014-04-29 | 2014-07-16 | 江苏大学 | Fault-tolerant type single-winding bearing-less permanent magnet motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20141203 Termination date: 20150429 |
|
| EXPY | Termination of patent right or utility model |