CN203339827U - A switched flux motor hiding salient poles - Google Patents
A switched flux motor hiding salient poles Download PDFInfo
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- CN203339827U CN203339827U CN2013203432718U CN201320343271U CN203339827U CN 203339827 U CN203339827 U CN 203339827U CN 2013203432718 U CN2013203432718 U CN 2013203432718U CN 201320343271 U CN201320343271 U CN 201320343271U CN 203339827 U CN203339827 U CN 203339827U
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- stator
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- magnet isolation
- implicit
- salient pole
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Abstract
The utility model discloses a switched flux motor hiding salient poles. The switched flux motor comprises a stator with a salient pole structure and a rotor disposed on the inner side of the stator. 6n stator teeth are disposed on the inner side of stator, wherein n is a natural number more than zero. A rectangular permanent magnet is disposed in each stator tooth. Concentrated armature coils are wound in the tooth slots of the stator teeth. The rectangular permanent magnets are magnetized tangentially and two adjacent rectangular permanent magnets have opposite magnetizing direction. Concentrated armature coils with same phases are connected in series or in parallel to form a three-phase armature winding. The rotor of the motor has no permanent magnets and windings and has simple and reliable structure. U-shaped magnetism-isolating grooves are disposed on the rotor in order to form a non magnetic conductive path. A saturated magnetic bridge is arranged on a U-shaped magnetism-isolating groove adjacent to an axis center. The performance of the motor is improved by changing the structure of the rotor.
Description
Technical field
The utility model belongs to the magneto field, relates to a kind of flux switching motor of implicit salient pole.
Background technology
Flux switching motor has obtained increasing concern after proposing.The similar switched reluctance machines of its basic structure, but be embedded with permanent magnet radially at each stator tooth.The magnetic flux path that permanent magnet produces changes along with the change of rotor-position, makes the magnetic flux generation alternation of stator winding linkage, and this switched reluctance machines from the embedded permanent magnet of stator yoke section is different in itself.In switched reluctance machines, the amplitude variation only occurs and nonpolarity variation with rotor-position in magnetic flux, so switched reluctance machines is the unipolarity motor.In flux switching motor, magnetic flux is with the rotor-position alternation, and amplitude and polarity all change, and therefore, flux switching motor is the bipolarity motor, and its torque and energy density are higher, and has good weak magnetic energy power.
Flux switching motor is a kind of double salient-pole electric machine of brushless structure, on rotor both without permanent magnet also without winding, have simple in structurely, sturdy and durable, be applicable to the plurality of advantages such as wide speed range operation.Motor utilizes permanent magnetic material to replace excitation winding, has reduced copper loss, and motor volume and weight greatly reduce simultaneously.Stator adopts concentrates winding, and winding overhang is less, saves copper consumption and reduces copper loss.To sum up flux switching motor has higher power density and efficiency, has prospects for commercial application widely.As: (1) ac variable frequency speed regulation drives, as household electrical appliance, electric automobile etc.; (2) in aircraft, naval vessels, vehicle, as independently starting/generating system use; (3) middle-size and small-size stand-by power supply or independent power supply, also can be incorporated into the power networks.
The rotor of current flux switching motor adopts salient-pole structure, research show salient-pole structure rotor magnetic coupling poor-performing, the magnetic field modulation ability is low, cogging torque is large, affects the start-up and operation performance of motor.Motor in the utility model adopts the rotor structure of implicit salient pole, from structure, has broken through the traditional double-salient-pole structure of flux switching motor, the Structure Improvement by changing rotor the start-up and operation performance of flux switching motor.
The utility model content
technical problem:there are weak-magnetic speed-regulating poor performance, problem that cogging torque is large for traditional double salient pole flux switching motor, for improving the performance of flux switching motor, the utility model provides a kind of stronger weak magnetism speed expansion performance that has, reduced cogging torque, improve startability, and effectively reduced the flux switching motor of the implicit salient pole of torque pulsation in the running.
technical scheme:the flux switching motor of implicit salient pole of the present utility model, the stator and the rotor that is arranged at the stator inboard that comprise salient-pole structure, be provided with on stator and be positioned at an inboard 6n stator tooth, n is greater than 0 natural number, be provided with the rectangle permanent magnet in each stator tooth, be wound with concentrated armature coil in the teeth groove of stator tooth, the magnetizing direction of rectangle permanent magnet cutting orientation magnetizing and two adjacent rectangle permanent magnets is contrary, homophase concentrates armature coil connected in series or in parallel, forms the threephase armature winding; Rotor is overrided to form by the lamination of arranging along rotor shaft direction, be provided with 5n group magnet isolation tank symmetrical centered by rotating shaft core on lamination, magnet isolation tank on all laminations is corresponding to be arranged, formation magnetic barrier, every group of magnet isolation tank comprises the U-shaped magnet isolation tank of at least one opening towards stator, the extended line of the dual-side of U-shaped magnet isolation tank intersects in rotating shaft core one side, and the angle of formation is 360
o/ 5n, when every group of magnet isolation tank comprises a plurality of U-shaped magnet isolation tank, a plurality of U-shaped magnet isolation tanks in every group of magnet isolation tank are radially arranged.
In every group of magnet isolation tank of the utility model motor, the bottom of one or more U-shaped magnet isolation tanks or side leave one or more saturated magnetic bridges.
In the utility model, the lamination of rotor is the soft magnetic material that thickness is less than 1mm.
In the utility model, in the magnetic barrier, be filled with for limiting the NULL of magnetic flux path.
In the utility model, stator consists of the 6n piece U-iron heart, 6n piece rectangle permanent magnet and 6n concentrated armature coil, the U-iron heart and rectangle permanent magnet are alternately placed assembled, the end of the two adjacent U-iron hearts forms stator tooth jointly, the rectangle permanent magnet, between the two adjacent U-iron hearts, concentrates armature coil on stator tooth.
A salient pole stator and a ganoid rotor are 6/5 utmost point flux switching motor.
Stator armature coil in 6 U-iron hearts, 6 rectangle permanent magnets and 6 three-phase set forms.The stator U-iron heart is circumference to be placed, and inserts a rectangle permanent magnet between the adjacent U-iron heart, and armature coil is on the tooth of two adjacent U-iron hearts.Rectangle permanent magnet cutting orientation magnetizing and magnetizing direction adjacent on stator are contrary.Two radially relative armature coils belong to same phase winding, and connected mode can be connected in series or in parallel, and as shown in Figure 1: armature coil A1, armature coil A2 locus are relative, the in sequential series or rear formation A phase armature winding in parallel by two armature coils.Armature coil B1, armature coil B2 locus are relative, the in sequential series or rear formation B phase armature winding in parallel of two windings.Armature coil C1, armature coil C2 locus are relative, the in sequential series or rear formation C phase armature winding in parallel of two windings.Just form like this A phase, B phase, C phase threephase armature winding on stator.
Rotor is by radially circular laminations, armature spindle, fastening bolt form.Magnetic conductive iron is the radially lamination of implicit salient pole, and smooth surface does not have teeth groove.Radially on circular laminations, have U-lag, every utmost point has two U-shaped magnet isolation tanks that are parallel to each other, and the permeability magnetic material between two U-shaped magnet isolation tanks forms the magnetic conduction path.In rotor magnetic barrier, can be air or filling non-magnet material.Making along the quadrature axis of the symmetry axis direction formation rotor of magnetic barrier every the magnetic effect of magnetic barrier.Permeability magnetic material between every two groups of magnetic barrier be radially the rotor d-axis.Rotor structure is respectively along d-axis and quadrature axis symmetry.Be provided with a saturated magnetic bridge on interior magnetic barrier.On rotor both without winding also without permanent magnet.
The stator of this motor comprises 6 U-iron hearts, 6 rectangle permanent magnets and 6 three-phase set coils, and rotor is the rotor of implicit salient pole, produces the salient pole effect by rotor magnetic barrier and forms basic motor.The stator unit of basic motor, rotor pole are carried out to the multiple expansion, can obtain stator 12 grooves/rotor 10 utmost points, stator 18 grooves/rotor 15 utmost points ... structural electromotor.
The utility model is on the basis that does not change flux switching motor salient pole stator structure, and rotor design is the smooth implicit salient-pole structure of laminate surface radially.
beneficial effect:the utility model compared with prior art, has the following advantages:
1, the flux switching motor of the implicit salient pole of rotor is develop and generate from the basis of double salient-pole electric machine.It simple in structure, rotor is pressed and is formed by the radially circular lamination stack of inside fluting, and the technique manufacture is simple, and cost is lower.
2, the flux switching motor of the implicit salient pole of rotor had both retained the advantage of traditional flux switching motor, had improved again the performance of flux switching motor by the rotor structure of implicit salient pole.On rotor, the magnetic barrier limits magnetic flux path, has shortened the main magnetic circuit of motor, and the eddy current loss while having reduced the motor operation has increased the d-axis inductance simultaneously.Compare the separated magnetic effect due to the magnetic barrier with the salient pole rotor motor of same structure, the quadrature axis inductance is very little, and rotor has very strong salient pole, makes motor that stronger weak magnetism speed expansion performance be arranged.The ganoid rotor structure air-gap field of comparing implicit salient pole with salient pole rotor change continuous effective comparatively reduction cogging torque, improved startability, and effectively reduced the torque pulsation in the running.
The accompanying drawing explanation
The flux switching motor schematic diagram that Fig. 1 is 6/5 extremely implicit salient pole;
Fig. 2 is the radially circular rotor pack schematic diagram that 6/5 utmost point turns the flux switching motor of implicit salient pole;
The side that Fig. 3 is the U-shaped magnet isolation tank leaves the flux switching motor schematic diagram of 6/5 extremely implicit salient pole of saturated magnetic bridge;
The flux switching motor schematic diagram that Fig. 4 is 12/10 extremely implicit salient pole.
In figure, have: rotor 1, stator 2, U-shaped magnet isolation tank 11, saturated magnetic bridge 12, rectangle permanent magnet 21, the U-iron heart 22, concentrated armature coil 23.
Embodiment
Below in conjunction with Figure of description and embodiment, the utility model is done further and illustrated.
The flux switching motor of implicit salient pole of the present utility model shown in Fig. 1, Fig. 2, comprise the ganoid rotor 1 of 1 salient-pole structure stator 2 and 1 implicit salient pole.Stator 2 consists of 22,6 rectangle permanent magnets 21 of 6 U-iron hearts and 6 concentrated armature coils 23.Rectangle permanent magnet 21 embeds in the middle of the adjacent U-iron heart 22, concentrates armature coil 23 on the tooth of two adjacent U-iron hearts 22.Rectangle permanent magnet 21 adjacent on stator 2 is contrary along cutting orientation magnetizing and magnetizing direction.On stator 2, A, B, C tri-phase windings are connected to form by 6 concentrated armature coils 23, two concentrated armature coils 23 formation one phase connected in series or in parallel of homophase.Rotor 1 is the structure of implicit salient pole, on rotor 1 both without permanent magnet also without winding.
The U-iron heart 22 and rectangle permanent magnet 21 that stator 2 is identical by 6 block structures form, and embed rectangle permanent magnet 21 in the adjacent U-iron heart 22.Be wound with on adjacent U-shaped tooth and concentrate armature coil 23, series connection or the formation one phase armature winding that is connected in parallel between in-phase coil.
The flux switching motor rotor 1 of implicit salient pole radially the circular laminations graphics as shown in Figure 2, rotor pack 1 thickness is h, have five pairs of U-shaped magnet isolation tanks 11 on rotor pack 1, every pair of U-shaped magnet isolation tank accounts for 72
0mechanical angle and being parallel to each other.Leave a saturated magnetic bridge 12 in every pair of U-shaped magnet isolation tank 11 on the close U-shaped magnet isolation tank of rotating shaft to improve the mechanical strength of rotor.Groove width is Ws, and two grooves are at a distance of Wi, and larger U-shaped magnet isolation tank is W at a distance of the d-axis width
h, apart from distance of center circle from being W
l, the groove apex distance is Wn from the distance at lamination edge.
The rotor core of the flux switching motor of the implicit salient pole of rotor is pressed and is formed by above-mentioned radially circular lamination stack, and the rotor core smooth surface, do not have teeth groove.The rotor core be overrided to form is cylindrical, by axial fastening bolt, is fixed.Rotor core is arranged on armature spindle.The magnetic barrier that the rotor core inside be overrided to form is formed by the U-shaped magnet isolation tank can be air or fill NULL.
The rectangle permanent magnet is selected the permanent magnetic materials such as ferrite or Nd-Fe-B permanent magnetic magnet steel.
The flux switching motor of implicit salient pole consists of rotor 1 and stator 2 as shown in Figure 1.Rotor is placed on stator interior, and rotor is coaxially installed.
The side that Fig. 3 is the U-shaped magnet isolation tank leaves the flux switching motor of the implicit salient pole of saturated magnetic bridge, and other parts are identical with the flux switching motor of the implicit salient pole shown in Fig. 1.
Fig. 3 is the flux switching motor that 12/10 extremely implicit salient pole of saturated magnetic bridge is left on U-shaped magnet isolation tank base, for stator unit, the rotor pole of the basic motor of motor shown in Fig. 1 carries out the multiple expansion, stator 12 grooves that obtain/rotor 10 electrode structure motors.
The flux switching motor of the implicit salient pole the utility model proposes moves as motor, consistent with traditional switch flux linkage motor operation logic.The improvement structure the utility model proposes, shortened every utmost point main flux path, reduced loss, increased the d-axis inductance simultaneously and improved the weak magnetism speed expansion performance.The implicit salient-pole structure of rotor, effectively reduce cogging torque and improved startability, reduced the torque pulsation in the running simultaneously.
Claims (5)
1. the flux switching motor of an implicit salient pole, it is characterized in that, this motor comprises the stator (2) of salient-pole structure and is arranged at the inboard rotor (1) of described stator (2), be provided with on described stator (2) and be positioned at an inboard 6n stator tooth, n is greater than 0 natural number, be provided with rectangle permanent magnet (21) in each described stator tooth, be wound with concentrated armature coil (23) in the teeth groove of stator tooth, the magnetizing direction of described rectangle permanent magnet (21) cutting orientation magnetizing and two adjacent rectangle permanent magnets (21) is contrary, homophase concentrates armature coil connected in series or in parallel, form the threephase armature winding,
Described rotor (1) is overrided to form by the lamination of arranging along rotor shaft direction, be provided with 5n group magnet isolation tank symmetrical centered by rotating shaft core on described lamination, magnet isolation tank on all laminations is corresponding to be arranged, formation magnetic barrier, every group of described magnet isolation tank comprises the U-shaped magnet isolation tank (11) of at least one opening towards stator (2), the extended line of the dual-side of described U-shaped magnet isolation tank (11) intersects in rotating shaft core one side, and the angle of formation is 360
o/ 5n, when every group of magnet isolation tank comprises a plurality of U-shaped magnet isolation tanks (11), a plurality of U-shaped magnet isolation tanks (11) in every group of magnet isolation tank are radially arranged.
2. the flux switching motor of implicit salient pole according to claim 1, is characterized in that, in described every group of magnet isolation tank, the bottom of one or more U-shaped magnet isolation tanks (11) or side leave one or more saturated magnetic bridges (12).
3. the flux switching motor of implicit salient pole according to claim 1 and 2, is characterized in that, the lamination of described rotor (1) is the soft magnetic material that thickness is less than 1mm.
4. the flux switching motor of implicit salient pole according to claim 1 and 2, is characterized in that, in described magnetic barrier, is filled with for limiting the NULL of magnetic flux path.
5. the flux switching motor of implicit salient pole according to claim 1 and 2, it is characterized in that, described stator (2) consists of the 6n piece U-iron heart (22), 6n piece rectangle permanent magnet (21) and 6n concentrated armature coil (23), the described U-iron heart (22) and rectangle permanent magnet (21) are alternately placed assembled, the end of the two adjacent U-iron hearts (22) forms stator tooth jointly, rectangle permanent magnet (21) is positioned between the two adjacent U-iron hearts (22), and described concentrated armature coil (23) is on stator tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203432718U CN203339827U (en) | 2013-06-17 | 2013-06-17 | A switched flux motor hiding salient poles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203432718U CN203339827U (en) | 2013-06-17 | 2013-06-17 | A switched flux motor hiding salient poles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203339827U true CN203339827U (en) | 2013-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203432718U Withdrawn - After Issue CN203339827U (en) | 2013-06-17 | 2013-06-17 | A switched flux motor hiding salient poles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203339827U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312061A (en) * | 2013-06-17 | 2013-09-18 | 东南大学 | Switch magnetic chain motor with concealed salient pole |
| CN103825420A (en) * | 2014-02-21 | 2014-05-28 | 东南大学 | Laminated set rotor flux-switching permanent magnet motor |
-
2013
- 2013-06-17 CN CN2013203432718U patent/CN203339827U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312061A (en) * | 2013-06-17 | 2013-09-18 | 东南大学 | Switch magnetic chain motor with concealed salient pole |
| CN103312061B (en) * | 2013-06-17 | 2015-04-08 | 东南大学 | Switch magnetic chain motor with concealed salient pole |
| CN103825420A (en) * | 2014-02-21 | 2014-05-28 | 东南大学 | Laminated set rotor flux-switching permanent magnet motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131211 Effective date of abandoning: 20150408 |
|
| RGAV | Abandon patent right to avoid regrant |