CN105790545A - High-power permanent magnetic coupler provided with single-turn wave winding - Google Patents
High-power permanent magnetic coupler provided with single-turn wave winding Download PDFInfo
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- CN105790545A CN105790545A CN201610238101.1A CN201610238101A CN105790545A CN 105790545 A CN105790545 A CN 105790545A CN 201610238101 A CN201610238101 A CN 201610238101A CN 105790545 A CN105790545 A CN 105790545A
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- bonder
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K51/00—Dynamo-electric gears, i.e. dynamo-electric means for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a high-power permanent magnetic coupler provided with a single-turn wave winding. The high-power permanent magnetic coupler comprises a winding rotor and a permanent magnet rotor, wherein the winding rotor is an internal rotor, the permanent magnet rotor is an external rotor, the winding rotor comprises a first iron core and a winding, a plurality of semi-enclosed slots are formed in the first iron core, the winding is arranged in the semi-enclosed slots, and a slot wedge for fixing the winding is inserted in the semi-enclosed slots. According to the high-power permanent magnetic coupler provided with the single-turn wave winding, since slot opening width of the semi-enclosed slots is far less than that of an open slot, the waveforms of air gap flux density is effectively improved, and eddy-current loss generated in a permanent magnet is reduced; since a transition section is in an oblique shoulder shape, a centrifugal force generated by the winding is born on an oblique shoulder of the semi-enclosed slots, the slot wedge cannot fall off, and the problem that a slot wedge is prone to fall off easily due to long-term operation of a high-power winding type permanent magnetic coupler is solved; and the adoption of the wave winding can reduce interpolar wiring, and reduce consumption of effective materials of the winding.
Description
Technical field
The present invention relates to the high-power permanent magnet bonder with single turn wave winding, belong to Mechanical Driven field.
Background technology
At present, winding type permanent magnetic coupling is made up of p-m rotor and wound rotor, and when wound rotor rotates with line shaft, winding is produced electromotive force by the magnetic field intercepts of p-m rotor, then produces electric current.Electric current in winding couples generation torque with permanent magnetic field, drives bearing axle to rotate.
Under volume the same terms, employing p-m rotor is outer rotor, and when wound rotor is internal rotor, the power density of permanent magnetic coupling is higher, and the torque that can be provided by is also bigger.
For powerful winding type permanent magnetic coupling, owing to the voltage of wound rotor, electric current are bigger, adopt scattered embedding winding can not meet production requirement, it is generally configured to the hard winding formed coil being made up of multiple series turns, its winding iron core can only be designed to open slot, and this just brings problems with: on the one hand, and when bonder runs, winding high speed rotating produces very big centrifugal force, longtime running very easily causes that slot wedge comes off, and affects bonder properly functioning；On the other hand, open slot design causes that Gas-gap Magnetic Field Resonance Wave content is bigger, permanent magnet can produce very big eddy-current loss, very easily cause that permanent magnet demagnetizes, although adopting magnetic slot-seal to play improve air gap magnetic density waveform, the effect of reduction permanent magnet eddy-current loss, but the poor performance of magnetic slot-seal, the phenomenon such as aliquation or breakage often occurs, there is also the possibility come off simultaneously.
In order to farthest utilize the performance of permanent magnet, p-m rotor is usually designed to surface-mount type, in magneto field, due to rotor and stator field synchronous rotary, usually ignore the eddy-current loss of permanent magnet surfaces, but for permanent magnetic coupling, there is clutch state, the now slip of inner and outer Rotator is very big, and the eddy-current loss of permanent magnet surfaces is enough to make permanent magnet temperature raise and demagnetize, it is impossible to be left in the basket.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of high-power permanent magnet bonder with single turn wave winding, owing to the width of rebate of semi-enclosed slot is much smaller than open slot, effectively improve the waveform of air gap flux density, reduce the eddy-current loss produced in permanent magnet.
Technical scheme: for solving above-mentioned technical problem, a kind of high-power permanent magnet bonder with single turn wave winding of the present invention, including wound rotor and p-m rotor, described wound rotor is internal rotor, p-m rotor is outer rotor, and described wound rotor comprises the first iron core and winding, and the first iron core offers several semi-enclosed slots, winding is arranged in semi-enclosed slot, is inserted with the slot wedge of fixing winding in semi-enclosed slot.
In order to reduce the eddy-current loss produced in permanent magnet, described semi-enclosed slot comprises rectangular channel, notch and changeover portion, and the width of described notch is 0.5-10mm, and described changeover portion is tiltedly take on, and tiltedly shoulder is used for placing slot wedge, and winding is inserted in rectangular channel, tight with slot wedge plug.
Further, the width of described notch is 1-6mm.
Further, described notch is positioned at the middle of semi-enclosed slot.
Further, described notch is positioned at the side of semi-enclosed slot.
Further, the face that described oblique shoulder restriction slot wedge moves is plane or circular arc camber.
Further, described winding is single-turn circular coil.
Further, in order to reduce interpolar line, reducing the consumption of the effective material of winding, described winding comprises upper strata winding and lower floor's winding, and the winding of rotor is wave winding structure.
Further, the line of described wave winding is by short distance and grows from hocketing, and finally gets up to constitute a phase winding by two big coils connected in series.
Further, described winding is three-phase or heterogeneous distribution, and winding is connected into star connection.
Further, described p-m rotor comprises the second iron core and permanent magnet, has several grooves, in permanent magnet embedded groove in described second iron core.
Further, the cross sectional shape of permanent magnet is rectangle or tile shape.
Beneficial effect: a kind of high-power permanent magnet bonder with single turn wave winding of the present invention, owing to the width of rebate of semi-enclosed slot is much smaller than open slot, effectively improves the waveform of air gap flux density, reduces the eddy-current loss produced in permanent magnet；Owing to changeover portion is oblique shoulder, the centrifugal force that winding produces just is born by the tiltedly shoulder of semi-enclosed slot, and slot wedge does not come off, and solves the problem that powerful winding type permanent magnetic coupling longtime running very easily causes slot wedge to come off；Adopt wave winding can reduce interpolar line, reduce the consumption of the effective material of winding.
Accompanying drawing explanation
Fig. 1 is the principle schematic of wave winding in the present invention.
Fig. 2 is the structural representation of the present invention.
Fig. 3 is the structural representation of semi-enclosed slot in the present invention.
Fig. 4 is the another kind of structural representation of semi-enclosed slot in the present invention.
Fig. 5 is the third structural representation of semi-enclosed slot in the present invention.
Fig. 6 is the 4th kind of structural representation of semi-enclosed slot in the present invention.
Detailed description of the invention
Embodiment 1
The profile of a kind of high-power permanent magnet bonder with single turn wave winding of the present invention is shown in shown in accompanying drawing 2, comprise wound rotor 1, p-m rotor 2 and the air gap between them 3, wound rotor 1 is internal rotor, p-m rotor 2 is outer rotor, so designing armature diameter (namely the external diameter of wound rotor 1) big, power density is high.P-m rotor 2 comprises permanent magnet 21 and the second iron core 22, and the second iron core 22 is laminated core structure, and the second iron core is overrided to form vertically by stalloy, and permanent magnet 21 is embedded in the second iron core 22.Wound rotor 1 comprises the first iron core 11, slot wedge 12, upper strata winding 13 and lower floor's winding 14, first iron core 11 is overrided to form vertically by stalloy, and it is provided with a number of semi-enclosed slot, the structure of semi-enclosed slot is as shown in Figure 3, semi-enclosed slot comprises rectangular channel, notch and changeover portion, the width 15mm of notch, notch is positioned at the middle of semi-enclosed slot, changeover portion is tiltedly take on, the face that tiltedly shoulder restriction slot wedge moves is plane, as shown in Figure 3, upper strata winding 13 and lower floor's winding 14 are inserted in rectangular channel, fill in tightly with slot wedge 12, the centrifugal force that upper strata winding 13 and lower floor's winding 14 produce just is born by the tiltedly shoulder of semi-enclosed slot, slot wedge 12 does not come off.Upper strata winding 13 and lower floor's winding 14 all adopt the insulation of flat type copper wire bag to make, and are arranged in the semi-enclosed slot of the first iron core, and upper strata winding 13 and lower floor's winding 14 are inserted in the semi-enclosed slot of the first iron core 11 from core ends, fill in tightly with slot wedge 12 afterwards.Being welded end according to the wiring rules of wave winding, wave winding is characterized by the coil belonging to same phase under same polarity (such as N1, N2 ...) to be sequentially connected in series by waveform, forms one group, as shown in Figure 2.For A phase: winding AB is inserted No. 3 grooves, and B ' E ' inserts No. 11 grooves, and EF inserts No. 21 grooves, and F ' J ' inserts No. 29 grooves, BB ', EE ', FF ', JJ ' being welded respectively afterwards, ABEFJK just constitutes a coil.Again the coil belonging to same phase under another polarity (S1, S2 ...) is sequentially connected in series by waveform, form another group, finally getting up to constitute a phase winding by two big coils connected in series, winding is if three-phase or heterogeneous distribution, and winding is finally connected into star connection.
In use, wound rotor 1 is connected the present invention with line shaft, and p-m rotor 2 is connected (vice versa) with bearing axle.When wound rotor 1 rotates with line shaft, winding cutting produces electromotive force in the magnetic field that p-m rotor 2 produces, and then produces electric current.Electric current in winding couples generation torque with permanent magnet 21 magnetic field, drives bearing axle to rotate.
Semi-enclosed slot according to the present embodiment design, air gap flux density, in sine wave, compares open slot, and the aberration rate of air gap magnetic density waveform diminishes, the eddy-current loss produced in permanent magnet have dropped 50%, solves the permanent magnet local demagnetization caused because permanent magnet eddy-current loss is excessive.
Embodiment 2
In the present embodiment, only semi-enclosed slot is different from embodiment 1, and in semi-enclosed slot, the width of notch is 6mm, and notch is positioned at the side of semi-enclosed slot, and the face that tiltedly shoulder restriction slot wedge moves is plane, as shown in Figure 4.Semi-enclosed slot according to the present embodiment design, air gap flux density, in sine wave, compares open slot, and the aberration rate of air gap magnetic density waveform diminishes, the eddy-current loss produced in permanent magnet have dropped 28%, solves the permanent magnet local demagnetization caused because permanent magnet eddy-current loss is excessive.
Embodiment 3
In the present embodiment, only semi-enclosed slot is different from embodiment 1, and in semi-enclosed slot, the width of notch is 6mm, and notch is positioned at the side of semi-enclosed slot, and the face that tiltedly shoulder restriction slot wedge moves is curved surface, as shown in Figure 6.Semi-enclosed slot according to the present embodiment design, air gap flux density, in sine wave, compares open slot, and the aberration rate of air gap magnetic density waveform diminishes, the eddy-current loss produced in permanent magnet have dropped 28%, solves the permanent magnet local demagnetization caused because permanent magnet eddy-current loss is excessive.
Embodiment 4
In the present embodiment, only semi-enclosed slot is different from embodiment 1, and in semi-enclosed slot, the width of notch is 5mm, and notch is positioned at the middle of semi-enclosed slot, and the face that tiltedly shoulder restriction slot wedge moves is plane, as shown in Figure 3.Semi-enclosed slot according to the present embodiment design, air gap flux density, in sine wave, compares embodiment 2, and the aberration rate of air gap magnetic density waveform diminishes, the eddy-current loss produced in permanent magnet have dropped 5.5%, solves the permanent magnet local demagnetization caused because permanent magnet eddy-current loss is excessive.
Embodiment 5
In the present embodiment, only semi-enclosed slot is different from embodiment 1, and in semi-enclosed slot, the width of notch is 5mm, and notch is positioned at the middle of semi-enclosed slot, and the face that tiltedly shoulder restriction slot wedge moves is curved surface, as shown in Figure 5.Semi-enclosed slot according to the present embodiment design, air gap flux density, in sine wave, compares embodiment 3, and the aberration rate of air gap magnetic density waveform diminishes, the eddy-current loss produced in permanent magnet have dropped 5.5%, solves the permanent magnet local demagnetization caused because permanent magnet eddy-current loss is excessive.
The above is only the preferred embodiment of the present invention; it is noted that, for those skilled in the art; under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (13)
1. a high-power permanent magnet bonder with single turn wave winding, it is characterized in that: include wound rotor and p-m rotor, described wound rotor is internal rotor, p-m rotor is outer rotor, described wound rotor comprises the first iron core and winding, first iron core offers several semi-enclosed slots, and winding is arranged in semi-enclosed slot, is inserted with the slot wedge of fixing winding in semi-enclosed slot.
2. the high-power permanent magnet bonder with single turn wave winding according to claim 1, it is characterized in that: described semi-enclosed slot comprises rectangular channel, notch and changeover portion, the width of described notch is 0.5-10mm, described changeover portion is tiltedly take on, tiltedly shoulder is used for placing slot wedge, winding is inserted in rectangular channel, tight with slot wedge plug.
3. the high-power permanent magnet bonder with single turn wave winding according to claim 2, it is characterised in that: the width of described notch is 1-6mm.
4. the high-power permanent magnet bonder with single turn wave winding according to claim 3, it is characterised in that: described notch is positioned at the middle of semi-enclosed slot.
5. the high-power permanent magnet bonder with single turn wave winding according to claim 3, it is characterised in that: described notch is positioned at the side of semi-enclosed slot.
6. the high-power permanent magnet bonder with single turn wave winding according to claim 4 or 5, it is characterised in that: the face that described oblique shoulder restriction slot wedge moves is plane or circular arc camber.
7. the high-power permanent magnet bonder with single turn wave winding according to claim 1, it is characterised in that: described winding is single-turn circular coil.
8. the high-power permanent magnet bonder with single turn wave winding according to claim 7, it is characterised in that: described winding comprises upper strata winding and lower floor's winding, and described winding is wave winding structure.
9. the high-power permanent magnet bonder with single turn wave winding according to claim 8, it is characterized in that: described wave winding structure is that the coil belonging to same phase under same polarity is sequentially connected in series by waveform, form one group, again the coil belonging to same phase under another polarity is sequentially connected in series by waveform, forms another group.
10. the high-power permanent magnet bonder with single turn wave winding according to claim 9, it is characterised in that: the line of described wave winding structure will by short distance with long from hocketing, finally get up to constitute a phase winding by two big coils connected in series.
11. the high-power permanent magnet bonder with single turn wave winding according to claim 1, it is characterised in that: described winding is three-phase or heterogeneous distribution, and winding is connected into star connection.
12. the high-power permanent magnet bonder with single turn wave winding according to claim 1, it is characterised in that: described p-m rotor comprises the second iron core and permanent magnet, has several grooves, in permanent magnet embedded groove in described second iron core.
13. the high-power permanent magnet bonder with single turn wave winding according to claim 12, it is characterised in that: the cross sectional shape of described permanent magnet is rectangle or tile shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610238101.1A CN105790545A (en) | 2016-04-15 | 2016-04-15 | High-power permanent magnetic coupler provided with single-turn wave winding |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610238101.1A CN105790545A (en) | 2016-04-15 | 2016-04-15 | High-power permanent magnetic coupler provided with single-turn wave winding |
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| CN105790545A true CN105790545A (en) | 2016-07-20 |
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| CN201610238101.1A Pending CN105790545A (en) | 2016-04-15 | 2016-04-15 | High-power permanent magnetic coupler provided with single-turn wave winding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111009979A (en) * | 2019-11-26 | 2020-04-14 | 华北电力大学 | High-voltage high-power cage type motor rotor slot |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111009979A (en) * | 2019-11-26 | 2020-04-14 | 华北电力大学 | High-voltage high-power cage type motor rotor slot |
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Application publication date: 20160720 |