CN202586528U - Novel built-in stator permanent magnet variable reluctance motor and stator assembly structure thereof - Google Patents
Novel built-in stator permanent magnet variable reluctance motor and stator assembly structure thereof Download PDFInfo
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- CN202586528U CN202586528U CN2011205297389U CN201120529738U CN202586528U CN 202586528 U CN202586528 U CN 202586528U CN 2011205297389 U CN2011205297389 U CN 2011205297389U CN 201120529738 U CN201120529738 U CN 201120529738U CN 202586528 U CN202586528 U CN 202586528U
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Abstract
The utility model discloses a novel built-in stator permanent magnet variable reluctance motor and a stator assembly structure thereof. The novel built-in stator permanent magnet variable reluctance motor includes a stator assembly, a base frame, an output shaft, and multiple stator assemblies which are evenly arranged along the circumferential direction. Each stator assembly is composed of a stator segment iron core, a permanent magnet, a wedge block, and an exciting winding. The stator segment iron core is U-shaped, and the exciting winding is wound on a yoke of the U-shaped stator segment iron core. The permanent magnet is arranged in the yoke of the stator segment iron core. The stator assemblies are fixed in the base frame. The rotor assembly is composed of a rotor body and rotor segment iron cores. The rotor body is provided with protruding or recessed parts. The rotor segment iron cores are circular rotor segments. The rotor segment iron cores are fixed on the rotor body via the protruding or recessed parts of the rotor body. Each of pole tips on the two ends of the rotor segment is composed of an arc which has a small radius and a straight line segment which is tangent to the arc. The rotor assembly is fixed on the output shaft. The direction of the electrically excited magnetic field is the same as the direction of the permanent magnet external magnetic field. The novel built-in stator permanent magnet variable reluctance motor is high in torque, small in vibration noise, compact in structure and is low in manufacturing cost.
Description
Technical field
The utility model relates to a kind of motor, relates in particular to the built-in permanent magnetic type variable magnetic resistance electric machine of a kind of novel stator, belongs to electric driving arrangement field.
Background technology
Because do not have permanent magnet or winding on the rotor, variable reluctance motor is simple in structure, firm reliable, and the fault-tolerant operation ability is strong, and speed governing is simple, and suitable high-speed cruising has huge application potential in the variable speed drives application.
General variable reluctance motor is the structure of the biconvex utmost point, is evenly equipped with the salient pole that some is arranged according to certain rules on stator and the rotor, and no winding or permanent magnet on the rotor are wound with coil on the salient pole of stator; Rotor always turns to the maximum position of inductance from the minimum position of inductance, thereby output torque externally does work; Yet, because the magnetic flux and the reverse magnetic flux of different harmonic waves are arranged on the stator yoke of general variable reluctance motor and the rotor yoke, when causing high-speed cruising; Iron loss is big, removes this, because rotor with salient pole and stator salient poles are in turning to the process of conllinear; Leakage field is big; Magnetic flux relative radial flux in tangential is too small, and suchlike defective causes general variable reluctance motor power density low, and vibration and noise are big.
In order to improve the problems referred to above, the various countries scholar has carried out big quantity research; At first, relatively be typically pole tip structure optimization through the rotor salient pole reducing vibrating noise, yet this scheme is a cost to reduce moment of torsion but; Secondly, on stator yoke, embed permanent magnet, to increase the power density of motor, make that simultaneously magnetic flux path shortens, reduced iron loss, but kept the structure of the biconvex utmost point, vibration and noise do not improve.
2002; The Britain scholar has proposed a kind of short Magnetic circuit switch reluctance motor of segmentation three type rotors in the power conversion international conference; After this; India and China Nanjing Aero-Space University and the professor of Harbin Institute of Technology successively study this kind motor, have proposed the new type composite excitation segmentation rotor motor of stator rabbet built-in permanent magnet, have further improved the performance of this kind motor properties.
The mixed excitation electric machine that notch is embedded with permanent magnet has a series of advantage; For example; The iron loss that short magnetic circuit structural brings reduces, and the existence of permanent magnet has increased the overwork ability of stator winding, and permanent magnet is parallelly connected with electro-magnetic flux; Thereby increased the useful life of permanent magnet, or the like; Yet comparatively obvious defects is also arranged, and at first, permanent magnet is near air gap; Make its heat radiation difficulty, secondly rotor turn to stator conllinear process in, the permanent magnet utilance is low; And have tangible eddy current, remove this, owing to adopt the umbrella shape rotor; Side force does not obtain utilizing, and therefore in order to compete with other kind motors, is necessary further to improve the layout and the rotor magnetic pole mechanism of its permanent magnet.
The utility model content
The technical problem that the utility model solves provides built-in permanent magnetic type variable magnetic resistance electric machine of a kind of novel stator and field frame assembly structure thereof, to reduce magnetic loss, improves electric efficiency and energy density and reduces the output torque fluctuation; Improve the useful life of motor simultaneously.
Be technical problem described in the technical solution background; The utility model adopts following technical scheme: the built-in permanent magnetic type variable magnetic resistance electric machine of a kind of novel stator, comprise rotor assembly, support frame, output shaft and several field frame assemblies of evenly arranging along circumference, said field frame assembly by stator segment core, permanent magnet, carve piece, excitation winding is formed; Stator segment core is " recessed " font; The opening part of " recessed " font is a notch, and the notch both sides are pole shoe, and having towards the outstanding position of notch on the pole shoe is tip of pole shoe; The bottom that " recessed " font opening part is relative is a yoke portion; Permanent magnet is built in the yoke portion of " recessed " font stator segment core, and excitation winding is wound in the yoke portion of " recessed " font stator segment core that is built-in with permanent magnet, carves in the notch that piece is embedded in " recessed " font stator segment core; Be fixed on the tip of pole shoe, the electro-magnetic flux direction that excitation winding produces is identical with the outer flow direction of built-in permanent magnet; Field frame assembly is fixed in the support frame; Rotor assembly comprises rotor block and several ring-shaped rotor iron leg cores of evenly arranging along circumference; The rotor block periphery has outstanding position with stationary annular rotor section iron core; The ring-shaped rotor section is an annular; On non-three survey faces near air gap, notch is arranged all, the pole tip position, two ends of ring-shaped rotor iron leg core is formed by arc section with the tangent straightway of arc section, so that form the breath structure that ladder becomes with " recessed " font stator segment near the air gap side; Rotor assembly and output shaft are fixed; When excitation winding was not switched on, the permanent magnet magnetic flux is auto-closing in the yoke portion of stator segment core; When excitation winding was switched on, electro-magnetic flux mixed magnetic flux through stator segment core, air gap and rotor section iron core closure, externally output torque acting with the formation of permanent magnet magnetic flux.
Wherein, described stator segment core yoke portion is built-in with permanent magnet.
Wherein, the notch of stator segment core is embedded with carves piece, and the said piece of carving is fixed on the tip of pole shoe.
Wherein, the punching of being processed by soft magnetic material of stator segment core and rotor section iron core is overrided to form.
Wherein, the electro-magnetic flux of excitation winding generation is identical with the outer flow direction of permanent magnet.
Wherein, the pole tip position of rotor section both sides is made up of segmental arc and straightway, and said straightway and arc are tangent.
[0014]Wherein, support frame and rotor block are processed by non-magnet material.
Compared with prior art, the utlity model has following beneficial effect:
(1) permanent magnet is built in the stator segment core, and the logical utilance of permanent magnet magnetic is high, and is difficult for demagnetization, removes this, and heat radiation is installed simple easily;
(2) excitation winding is installed simply for concentrating winding, and electro-magnetic flux shutoff advance angle is littler, has increased the motor output torque;
(3) utilize the side force of flux interaction on rotor section fully, improved motor output torque density;
(4) gap structure of ladder change makes that the variation of radial load is slow, vibrating noise when having reduced the motor operation;
(5) adopt short magnetic circuit, reduced motor iron loss and magnetic noise;
(6) notch is carved the vibration that piece helps reducing the leakage field between the stator segment core bipolar shoe and produced by leakage field.
Description of drawings
Fig. 1 is the built-in permanent magnetic type variable magnetic resistance electric machine of a kind of novel stator and the field frame assembly architecture sketch map thereof of the utility model first specific embodiment;
Fig. 2 is the Distribution of Magnetic Field figure of the stator excitation winding of the utility model first specific embodiment when beginning conducting;
Distribution of Magnetic Field figure when Fig. 3 is rotor section iron core and the stator segment core conllinear of the utility model first specific embodiment;
Fig. 4 is the built-in permanent magnetic type variable magnetic resistance electric machine structural representation of the external rotor stator of the utility model second specific embodiment.
Embodiment
With reference to figure 1, this figure is the first specific embodiment structural representation of the utility model built-in permanent magnetic type variable magnetic resistance electric machine of a kind of novel stator and field frame assembly structure thereof.
The built-in permanent magnetic type variable magnetic resistance electric machine of a kind of novel stator of present embodiment and field frame assembly structure (0) thereof include field frame assembly, rotor assembly, support frame and output shaft; Field frame assembly is by stator segment core (2), permanent magnet (4), excitation winding (5) and carve piece (10) and form; Stator segment core is " recessed " font; The opening part of " recessed " font is a notch, and the core packet on notch both sides is a pole shoe, and the pole shoe side is tip of pole shoe (9) towards the protrusion of notch; The stack of lamination relative with the stator segment core notch is yoke portion (3); Permanent magnet (4) is built in the yoke portion (3), and excitation winding (5) is wound in the yoke portion (3), carves piece (10) and is embedded in the notch of stator segment core; Be fixed on the tip of pole shoe (9), by stator segment core, permanent magnet, excitation winding and carve the field frame assembly that piece forms and be fixed in the support frame (1); Rotor assembly is made up of rotor block (7) and rotor section iron core (6), and the rotor section iron core is fixed on the rotor block (7) through groove (11), and is fixing by rotor assembly and output shaft (8) that rotor section iron core and rotor block are formed; What disclose in this specific embodiment is the built-in permanent magnetic type variable magnetic resistance electric machines of four phase 8/6 extremely novel stators; Four are respectively A1-A2, B1-B2, C1-C2, D1-D2 mutually, and flow direction is identical outward with corresponding built-in permanent magnet for the electro-magnetic flux that every two excitation winding in mutually produce, when the excitation winding no power; Permanent magnet is closed in the yoke portion of stator segment core; Output torque not, when excitation winding passed to little electric current, magnetic field of permanent magnet began through stator segment core, pole shoe/tip of pole shoe, air gap and rotor section iron core closed; Output torque externally does work; When passing to big electric current, the mixed excited magnetic pass that the outer magnetic flux of electro-magnetic flux and permanent magnet forms all produces moment of torsion and externally does work through stator segment core, pole shoe/tip of pole shoe, air gap and rotor section iron core closure.
Should be noted that; The mode that ring-shaped rotor iron leg core is fixed on the rotor block is not limited to the mode that this specific embodiment discloses; The version that can adopt other with fixed rotor iron leg core on rotor block; For example slot on the rotor block, and outstanding position is arranged on the rotor section iron core, thereby fixed rotor iron leg core is on rotor block.
With reference to figure 2, for first specific embodiment of the utility model built-in permanent magnetic type variable magnetic resistance electric machine of a kind of novel stator and field frame assembly structure D1 thereof ,-magnetic line of force distribution map when D2 phase excitation winding begins conducting; At this moment; Not energising of other three-phases A1-A2, B1-B2, C1-C2; Permanent magnet is closed in the yoke portion of stator segment core; It is closed that the permanent magnet of D1-D2 in mutually then passes through stator segment core, pole shoe/tip of pole shoe, air gap and rotor section iron core, and this moment, most of moment of torsion was produced by the permanent magnet magnetic flux, externally output acting.
With reference to figure 3; Magnetic line of force distribution map during for first specific embodiment of the utility model built-in permanent magnetic type variable magnetic resistance electric machine of a kind of novel stator and middle mutually stator segment core of field frame assembly structure D1-D2 and rotor section iron core conllinear; At this moment; Electric current among the D1-D2 breaks off, and bigger induction magnetic flux is still still arranged, and the outer magnetic flux of permanent magnet mixes magnetic flux through stator segment core, pole shoe/tip of pole shoe, air gap and rotor section iron core closure with the formation of induction magnetic flux.
With reference to figure 4, be the built-in permanent magnetic type variable magnetic resistance electric machine of the novel stator of external-rotor-type and the field frame assembly structural representation thereof of second specific embodiment of the utility model; This specific embodiment is four phases, 8/6 utmost point motors, and four are respectively A1-A2, B1-B2, C1-C2, D1-D2 mutually; The same with the first specific embodiment yoke; Built-in permanent magnetic type variable magnetic resistance electric machine of the novel stator of external-rotor-type and field frame assembly structure thereof also are made up of field frame assembly, rotor assembly, support frame and output shaft; Field frame assembly comprises stator segment core (02), permanent magnet (04), excitation winding (05) and carves piece (010) and form; Permanent magnet is built in the yoke portion (03) of stator segment core, and excitation winding (05) is wound in the yoke portion (03) of stator segment core, carves in the groove that piece is embedded in stator segment core; Carve piece and be fixed on the tip of pole shoe (09), field frame assembly is fixed in the support frame (01); Different with first specific embodiment is that support frame (01) is fixing with output shaft (08); Rotor assembly comprises rotor block (07) and rotor section iron core (06), and the rotor section iron core is fixed in the rotor block through groove (011), and rotor assembly forms free to rotate being connected through bearing with output shaft (08).
Though the specific embodiment of the utility model has disclosed as above; The utility model is not limited to above-mentioned specific embodiment; The technical staff is when understanding; Under the situation that does not break away from the utility model, can change open embodiment, promptly the content of the utility model can be used three-phase 12/8 utmost point, 6/4 utmost point and four mutually isostructural motors equally; Therefore, top several embodiment only are used for example and are not used in the restriction purpose.
Claims (2)
1. built-in permanent magnetic type variable magnetic resistance electric machine of novel stator and field frame assembly structure thereof; Comprise that rotor assembly, support frame, output shaft and several along the field frame assembly that circumference is evenly arranged, is characterized in that, said field frame assembly by stator segment core, permanent magnet, carve piece, excitation winding is formed; Stator segment core is " recessed " font; The opening part of " recessed " font is a notch, and the notch both sides are pole shoe, and having towards the outstanding position of notch on the pole shoe is tip of pole shoe; The bottom that " recessed " font opening part is relative is a yoke portion; Permanent magnet is built in the yoke portion of " recessed " font stator segment core, and excitation winding is wound in the yoke portion of " recessed " font stator segment core that is built-in with permanent magnet, carves in the notch that piece is embedded in " recessed " font stator segment core; Be fixed on the tip of pole shoe, the electro-magnetic flux direction that excitation winding produces is identical with the outer flow direction of built-in permanent magnet; Field frame assembly is fixed in the support frame, and output shaft and support frame are free to rotate or fixing; Rotor assembly comprises that rotor block and several are along the even rotor arranged iron leg of the circumference heart; The rotor block periphery have outstanding or the depression position with fixed rotor iron leg core; The rotor section iron core is an annular; On non-three survey faces near air gap, notch is arranged all, the pole tip position, two ends of ring-shaped rotor iron leg core is formed by arc section with the tangent straightway of arc section, so that form the breath structure that ladder becomes with " recessed " font stator segment near the air gap side; Rotor assembly and output shaft are fixing or free to rotate; When unloaded, the said permanent magnet that is built in stator segment core yoke portion forms the closed-loop path in " recessed " font stator segment yoke portion; During loaded work piece, said excitation winding energising, electro-magnetic flux passes through stator segment, air gap, ring-shaped rotor section closure, externally output acting with the magnetic flux that mixes that the permanent magnet magnetic flux forms.
2. built-in permanent magnetic type variable magnetic resistance electric machine of novel stator according to claim 1 and field frame assembly structure thereof is characterized in that, said permanent magnet is embedded in the yoke portion of stator segment core.
3. built-in permanent magnetic type variable magnetic resistance electric machine of novel stator according to claim 1 and field frame assembly structure thereof; It is characterized in that; Notch between the stator segment tip of pole shoe is carved piece, and carves on the tip of pole shoe that piece is fixed in stator segment core, and the said piece of carving is processed by dielectric material or NULL.
4. built-in permanent magnetic type variable magnetic resistance electric machine of novel stator according to claim 1 and field frame assembly structure thereof is characterized in that, said excitation winding is wound in the stator segment core yoke portion that is built-in with permanent magnet.
5. built-in permanent magnetic type variable magnetic resistance electric machine of novel stator according to claim 1 and field frame assembly structure thereof; It is characterized in that; Said rotor section iron core is the ring-shaped rotor section; The punching of being processed by soft magnetic material is overrided to form, and non-three sides near air gap of rotor section iron core are rotor section and the fixing locating surface of rotor block.
6. built-in permanent magnetic type variable magnetic resistance electric machine of novel stator according to claim 1 and field frame assembly structure thereof is characterized in that, two pole tip positions of rotor section are made up of segmental arc and straightway, and this straightway and segmental arc are tangent.
7. built-in permanent magnetic type variable magnetic resistance electric machine of novel stator according to claim 1 and field frame assembly structure thereof is characterized in that described support and rotor block are processed by non-magnet material.
8. the field frame assembly structure of built-in permanent magnetic type variable magnetic resistance electric machine of novel stator and field frame assembly structure thereof is characterized in that, comprising:
Permanent magnet, said permanent magnet are built in the yoke portion of " recessed " font stator segment; Excitation winding, said excitation winding are wound in the yoke portion that " recessed " font stator segment is built-in with permanent magnet; Stator segment core, said stator segment core are " recessed " font, and the opening part of " recessed " font is a notch, are two pole shoes in the notch both sides of stator segment core, and an outstanding position towards notch is arranged respectively on two pole shoes, are tip of pole shoe; Carve piece, the said piece of carving is embedded in the stator segment core notch, is fixed on the tip of pole shoe of stator segment core notch both sides, and the said piece of carving is processed by dielectric material or NULL.
9. the electromagnetism that field frame assembly structure according to claim 8, excitation winding produce logical with stator segment core yoke portion in permanent magnet flow direction is identical outward.
10. field frame assembly structure according to claim 8, the punching that stator segment is processed by soft magnetic material is overrided to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205297389U CN202586528U (en) | 2011-12-19 | 2011-12-19 | Novel built-in stator permanent magnet variable reluctance motor and stator assembly structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205297389U CN202586528U (en) | 2011-12-19 | 2011-12-19 | Novel built-in stator permanent magnet variable reluctance motor and stator assembly structure thereof |
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| Publication Number | Publication Date |
|---|---|
| CN202586528U true CN202586528U (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205297389U Expired - Fee Related CN202586528U (en) | 2011-12-19 | 2011-12-19 | Novel built-in stator permanent magnet variable reluctance motor and stator assembly structure thereof |
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| CN (1) | CN202586528U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497039A (en) * | 2011-12-19 | 2012-06-13 | 周智庆 | Novel built-in permanent magnet type variable reluctance motor for stator |
| CN105245078A (en) * | 2014-06-05 | 2016-01-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Switching reluctance motor |
-
2011
- 2011-12-19 CN CN2011205297389U patent/CN202586528U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497039A (en) * | 2011-12-19 | 2012-06-13 | 周智庆 | Novel built-in permanent magnet type variable reluctance motor for stator |
| CN105245078A (en) * | 2014-06-05 | 2016-01-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Switching reluctance 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: 20121205 Termination date: 20141219 |
|
| EXPY | Termination of patent right or utility model |