CN102497039A - Novel built-in permanent magnet type variable reluctance motor for stator - Google Patents
Novel built-in permanent magnet type variable reluctance motor for stator Download PDFInfo
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- CN102497039A CN102497039A CN2011104239592A CN201110423959A CN102497039A CN 102497039 A CN102497039 A CN 102497039A CN 2011104239592 A CN2011104239592 A CN 2011104239592A CN 201110423959 A CN201110423959 A CN 201110423959A CN 102497039 A CN102497039 A CN 102497039A
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Abstract
The invention discloses a built-in permanent magnet type variable reluctance motor for a stator, which comprises a rotor assembly, a baseframe, an output shaft and a plurality of stator assemblies uniformly distributed along the circumference, wherein, each stator assembly comprises a stator section iron core, a permanent magnet, a wedged block and an excitation winding, the excitation winding is wound on the yoke of the concave-shaped stator section iron core, and the permanent magnet is built in the yoke of the stator section iron core; the stator assemblies are fixed on the baseframe; the rotor assembly comprises a rotor body and rotor section iron cores, the protruded or sunken parts are arranged on the rotor body, the rotor section iron cores are ring-shaped rotor sections and fixed on the rotor body through the protruded or sunken parts on the rotor body; the pole points at two ends of each rotor section are composed of small-radius circular arcs and straight-line segments tangent to the circular arcs; the rotor assembly is fixed with the output shaft; and the magnetic field of the electric excitation and magnetic field outside the permanent magnet are same in the direction. The variable reluctance motor provided by the invention has the advantages of high rotating torque, small vibration noise, compact structure and low manufacturing cost.
Description
Technical field
The present invention relates to a kind of motor, relate in particular to the built-in permanent magnetic type variable magnetic resistance electric machine of a kind of novel stator, belong 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.
Summary of the invention
The technical problem that the present invention solves provides a kind of novel stator built-in permanent magnetic type variable magnetic resistance electric machine, 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 present invention adopts following technical scheme:
The built-in permanent magnetic type variable magnetic resistance electric machine of a kind of novel stator comprises rotor assembly, support frame, output shaft and several field frame assemblies of evenly arranging along circumference, said field frame assembly by stator segment iron core, permanent magnet, carve piece, excitation winding is formed; The stator segment iron 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 " recessed " font stator segment yoke portion unshakable in one's determination, and excitation winding is wound in the yoke portion of " recessed " font stator segment iron core that is built-in with permanent magnet, carves piece and is embedded in " recessed " font stator segment notch unshakable in one's determination; 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 hearts of evenly arranging along circumference; The rotor block periphery has outstanding position unshakable in one's determination with the stationary annular rotor section; 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 the ring-shaped rotor iron leg heart 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 iron core;
When excitation winding was switched on, electro-magnetic flux mixed magnetic flux through stator segment iron core, air gap and rotor section closure unshakable in one's determination, external output torque acting with the formation of permanent magnet magnetic flux.
Wherein, described stator segment rear of core is built-in with permanent magnet.
Wherein, stator segment notch unshakable in one's determination is embedded with carves piece, and the said piece of carving is fixed on the tip of pole shoe.
Wherein, stator segment punching unshakable in one's determination and that the rotor section iron core is processed by soft magnetic material 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.
Wherein, support frame and rotor block are processed by non-magnet material.
Compared with prior art, the present invention has following beneficial effect:
(1) permanent magnet is built in the stator segment iron 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 piece and is helped reducing leakage field between the stator segment bipolar shoe unshakable in one's determination and the vibration that is produced by leakage field.
Description of drawings
Fig. 1 is the built-in permanent magnetic type variable magnetic resistance electric machine structural representation of a kind of novel stator of the present invention's first specific embodiment;
Fig. 2 is the Distribution of Magnetic Field figure of the stator excitation winding of the present invention's first specific embodiment when beginning conducting;
Fig. 3 is the rotor section of the present invention's first specific embodiment Distribution of Magnetic Field figure during with stator segment conllinear unshakable in one's determination unshakable in one's determination;
Fig. 4 is the built-in permanent magnetic type variable magnetic resistance electric machine structural representation of the external rotor stator of the present invention's second specific embodiment;
Embodiment
With reference to figure 1, this figure is the first specific embodiment structural representation of the built-in permanent magnetic type variable magnetic resistance electric machine of a kind of novel stator of the present invention.
The built-in permanent magnetic type variable magnetic resistance electric machine of a kind of novel stator (0) of present embodiment includes field frame assembly, rotor assembly, support frame and output shaft; Field frame assembly is by stator segment unshakable in one's determination (2), permanent magnet (4), excitation winding (5) and carve piece (10) and form; The stator segment iron core is " recessed " font; The opening part of " recessed " font is a notch, and the stack of lamination 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 iron 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 stator segment notch unshakable in one's determination; Be fixed on the tip of pole shoe (9), by stator segment iron 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 (6) unshakable in one's determination, and rotor section is unshakable in one's determination to be fixed on the rotor block (7) through groove (11), and rotor assembly and output shaft (8) unshakable in one's determination by rotor section and that rotor block is formed are fixing;
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 iron core; Output torque not, when excitation winding passed to little electric current, magnetic field of permanent magnet began through stator segment iron core, pole shoe/tip of pole shoe, air gap and rotor section unshakable in one's determination 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 iron core, pole shoe/tip of pole shoe, air gap and rotor section iron core closure.
Should be noted that; The mode that the ring-shaped rotor iron leg heart is fixed on the rotor block is not limited to the mode that this specific embodiment discloses; The version that can adopt other with the fixed rotor iron leg heart on rotor block; For example slot on the rotor block, and outstanding position is arranged on the rotor section iron core, thereby the fixed rotor iron leg heart is on rotor block.
With reference to figure 2, the magnetic line of force distribution map when beginning conducting for the built-in permanent magnetic type variable magnetic resistance electric machine D1-D2 of a kind of novel stator of first specific embodiment of the present invention phase excitation winding; At this moment; Not energising of other three-phases A1-A2, B1-B2, C1-C2; Permanent magnet is closed in stator segment yoke portion unshakable in one's determination; It is unshakable in one's determination closed that the permanent magnet of D1-D2 in mutually then passes through stator segment iron core, pole shoe/tip of pole shoe, air gap and rotor section, 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 middle mutually stator segment iron core of the built-in permanent magnetic type variable magnetic resistance electric machine D1-D2 of a kind of novel stator of first specific embodiment of invention and rotor section iron core conllinear; At this moment; Electric current among the D1-D2 breaks off, but bigger induction magnetic flux still arranged, and the outer magnetic flux of permanent magnet mixes magnetic flux through stator segment iron core, pole shoe/tip of pole shoe, air gap and rotor section iron core closure with the induction magnetic flux forms.
With reference to figure 4, be the built-in permanent magnetic type variable magnetic resistance electric machine structural representation of the novel stator of the external-rotor-type of second specific embodiment of the present invention; 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; The built-in permanent magnetic type variable magnetic resistance electric machine of the novel stator of external-rotor-type also is made up of field frame assembly, rotor assembly, support frame and output shaft; Field frame assembly comprises stator segment (02), permanent magnet (04), excitation winding (05) unshakable in one's determination and carves piece (010) and form; Permanent magnet is built in the stator segment yoke portion (03) unshakable in one's determination, and excitation winding (05) is wound in the stator segment yoke portion (03) unshakable in one's determination, carves piece and is embedded in the stator segment groove unshakable in one's determination; 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 (06) unshakable in one's determination, and rotor section is unshakable in one's determination to be fixed in the rotor block through groove (011), and rotor assembly forms free to rotate being connected through bearing with output shaft (08).
Though specific embodiment of the present invention has disclosed as above; The present invention is not limited to above-mentioned specific embodiment; The technical staff is when understanding; Without departing from the invention, can change open embodiment, content promptly of the present invention can be used three-phase 12/8 utmost point, 6/4 utmost point and four phases or the like equally; Therefore, top several embodiment only are used for example and are not used in the restriction purpose.
Claims (10)
1. built-in permanent magnetic type variable magnetic resistance electric machine of novel stator; 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 iron core, permanent magnet, carve piece, excitation winding is formed; The stator segment iron 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 " recessed " font stator segment yoke portion unshakable in one's determination, and excitation winding is wound in the yoke portion of " recessed " font stator segment iron core that is built-in with permanent magnet, carves piece and is embedded in " recessed " font stator segment notch unshakable in one's determination; 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 the fixed rotor iron leg heart; 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 the ring-shaped rotor iron leg heart 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 the stator segment rear of core 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. the built-in permanent magnetic type variable magnetic resistance electric machine of novel stator according to claim 1 is characterized in that, said permanent magnet is embedded in the stator segment yoke portion unshakable in one's determination.
3. the built-in permanent magnetic type variable magnetic resistance electric machine of novel stator according to claim 1 is characterized in that the notch between the stator segment tip of pole shoe is carved piece, and carves piece and be fixed on the stator segment tip of pole shoe unshakable in one's determination, and the said piece of carving is processed by dielectric material or NULL.
4. the built-in permanent magnetic type variable magnetic resistance electric machine of novel stator according to claim 1 is characterized in that said excitation winding is wound on the stator segment rear of core that is built-in with permanent magnet.
5. the built-in permanent magnetic type variable magnetic resistance electric machine of novel stator according to claim 1; It is characterized in that; Said rotor section iron core is the ring-shaped rotor section, and the punching of being processed by soft magnetic material is overrided to form, and rotor section non-three sides near air gap unshakable in one's determination are rotor section and the fixing locating surface of rotor block.
6. the built-in permanent magnetic type variable magnetic resistance electric machine of novel stator according to claim 1 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. the built-in permanent magnetic type variable magnetic resistance electric machine of novel stator according to claim 1 is characterized in that described support and rotor block are processed by non-magnet material.
8. the field frame assembly structure of the built-in permanent magnetic type variable magnetic resistance electric machine of novel stator 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 is unshakable in one's determination, and said stator segment iron core is " recessed " font, and the opening part of " recessed " font is a notch, and the notch both sides unshakable in one's determination at stator segment are two pole shoes, 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 iron core notch, is fixed on the tip of pole shoe of stator segment iron core notch both sides, and the said piece of carving is processed by dielectric material or NULL.
9. stator structure according to claim 7, the electromagnetism that excitation winding produces is logical, and flow direction is identical outward with the interior permanent magnet of stator segment rear of core.
10. stator structure according to claim 7, the punching that stator segment is processed by soft magnetic material is overrided to form.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104239592A CN102497039A (en) | 2011-12-19 | 2011-12-19 | Novel built-in permanent magnet type variable reluctance motor for stator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104239592A CN102497039A (en) | 2011-12-19 | 2011-12-19 | Novel built-in permanent magnet type variable reluctance motor for stator |
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| CN102497039A true CN102497039A (en) | 2012-06-13 |
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| CN2011104239592A Pending CN102497039A (en) | 2011-12-19 | 2011-12-19 | Novel built-in permanent magnet type variable reluctance motor for stator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560055A (en) * | 2013-11-16 | 2014-02-05 | 沈阳工业大学 | Permanent magnet variable air gap limited rotation angle motor operation mechanism of high-voltage breaker |
| CN108377060A (en) * | 2018-02-28 | 2018-08-07 | 浙江京惠机电有限公司 | A kind of industrial motor |
| CN111561439A (en) * | 2020-05-15 | 2020-08-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and air conditioner with same |
| CN113452163A (en) * | 2021-06-01 | 2021-09-28 | 华中科技大学 | Reluctance motor with double-layer stator structure |
| CN114421659A (en) * | 2022-01-26 | 2022-04-29 | 丽水方德智驱应用技术研究院有限公司 | Stator and flat wire motor of adaptation warm area distribution characteristics |
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| CN1560987A (en) * | 2004-02-23 | 2005-01-05 | 哈尔滨工业大学 | Mixed excitation switch reluctance motor |
| CN1787332A (en) * | 2005-11-16 | 2006-06-14 | 哈尔滨工业大学 | Short magnetic circuit mixing exciting switch Magnet resistance motor |
| CN101764492A (en) * | 2010-01-28 | 2010-06-30 | 南京航空航天大学 | Composite excitation partitioned stator and rotor switched reluctance motor |
| CN202586528U (en) * | 2011-12-19 | 2012-12-05 | 周智庆 | Novel built-in stator permanent magnet variable reluctance motor and stator assembly structure thereof |
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2011
- 2011-12-19 CN CN2011104239592A patent/CN102497039A/en active Pending
Patent Citations (4)
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| CN1560987A (en) * | 2004-02-23 | 2005-01-05 | 哈尔滨工业大学 | Mixed excitation switch reluctance motor |
| CN1787332A (en) * | 2005-11-16 | 2006-06-14 | 哈尔滨工业大学 | Short magnetic circuit mixing exciting switch Magnet resistance motor |
| CN101764492A (en) * | 2010-01-28 | 2010-06-30 | 南京航空航天大学 | Composite excitation partitioned stator and rotor switched reluctance motor |
| CN202586528U (en) * | 2011-12-19 | 2012-12-05 | 周智庆 | Novel built-in stator permanent magnet variable reluctance motor and stator assembly structure thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560055A (en) * | 2013-11-16 | 2014-02-05 | 沈阳工业大学 | Permanent magnet variable air gap limited rotation angle motor operation mechanism of high-voltage breaker |
| CN108377060A (en) * | 2018-02-28 | 2018-08-07 | 浙江京惠机电有限公司 | A kind of industrial motor |
| CN108377060B (en) * | 2018-02-28 | 2024-04-26 | 浙江京惠机电有限公司 | Industrial motor |
| CN111561439A (en) * | 2020-05-15 | 2020-08-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and air conditioner with same |
| CN111561439B (en) * | 2020-05-15 | 2022-04-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and air conditioner with same |
| CN113452163A (en) * | 2021-06-01 | 2021-09-28 | 华中科技大学 | Reluctance motor with double-layer stator structure |
| CN114421659A (en) * | 2022-01-26 | 2022-04-29 | 丽水方德智驱应用技术研究院有限公司 | Stator and flat wire motor of adaptation warm area distribution characteristics |
| CN114421659B (en) * | 2022-01-26 | 2023-10-27 | 丽水方德智驱应用技术研究院有限公司 | Stator and flat wire motor adapting to temperature zone distribution characteristics |
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