CN211556993U - Trapezoidal salient pole switched reluctance motor - Google Patents
Trapezoidal salient pole switched reluctance motor Download PDFInfo
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- CN211556993U CN211556993U CN201922155704.7U CN201922155704U CN211556993U CN 211556993 U CN211556993 U CN 211556993U CN 201922155704 U CN201922155704 U CN 201922155704U CN 211556993 U CN211556993 U CN 211556993U
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Abstract
The utility model discloses a trapezoidal salient pole switched reluctance motor belongs to the switched reluctance motor field. The salient poles of all phases of the trapezoidal salient pole switched reluctance motor are arranged in a concentrated mode, and the salient poles are designed to be trapezoidal, so that the axial projection sectional area of the salient poles is increased, and further, the magnetic energy product of electrified windings on the salient poles and the power density of the motor are increased; the groove between the adjacent salient poles in the stator core phase is a small groove, the groove between the adjacent salient poles between the adjacent phases is a large groove, one side of the salient poles is attached to the winding during installation and disassembly, and the large groove is ingeniously used for abdicating, so that the winding is simple to install and disassemble, and the production efficiency and the maintenance efficiency are improved.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a switched reluctance motor field especially relates to a trapezoidal salient pole switched reluctance motor.
[ background of the invention ]
Since the utility model, the salient pole is usually designed to be rectangular, and the groove is usually designed to be trapezoidal, the switched reluctance motor has never been changed since decades due to simple structure.
The conventional switched reluctance motor has a common ratio of the number of salient poles of a stator to the number of salient poles of a rotor, wherein three phases are 6/4 poles, and four phases are 8/6 poles. The ratio of the number of salient poles of the stator to the number of salient poles of the rotor of the switched reluctance motor with the latest structure is 6/7 poles in three phases and 8/9 poles in four phases, and concretely, the patent number CN201710586200.3 "stator core with salient poles of each phase arranged in a concentrated manner and a motor with salient poles of each phase arranged in a concentrated manner". The arc angle of salient poles is related to the phase number and the salient pole number, the theoretical value is equal to the product of 360 DEG/the phase number and the rotor salient pole number, the arc angle of the salient poles is easy to know, the arc angle of the salient poles of a motor with 6/4 poles in three phases is 30 DEG, the arc angle of the salient poles of a motor with 8/6 poles in four phases is 15 DEG, the arc angle of the salient poles of the motor with 6/7 poles in three phases is 17.14 DEG, the arc angle of the salient poles of the motor with 8/9 poles in four phases is 10 DEG, the arc angle of the salient poles of a new structure is easy to deduce and smaller than that of a traditional structure, if the salient poles are designed to be rectangular according to the conventional thinking, the axial projection section area of the salient poles of the new structure is smaller than that of the axial projection section of the traditional structure, and.
Therefore, how to increase the axial projection cross section of the salient pole and improve the magnetic energy product of the energized winding is a problem to be faced when the function density of the switched reluctance motor with the latest structure is further improved.
[ Utility model ] content
In order to solve the above problem, an object of the utility model is to provide a trapezoidal salient pole switched reluctance motor, its salient pole axial projection cross-section through with stator core sets up to trapezoidal, has increased stator core salient pole axial projection sectional area, and then has increased stator core salient pole on the magnetic energy product and the motor power density who leads to electric winding.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
a trapezoidal salient pole switched reluctance motor comprises a stator core, a rotor core and windings, wherein the stator core is formed by concentratedly arranging salient poles of all phases, the rotor core is provided with the salient poles, grooves are formed between the salient poles of the stator core and the salient poles, the salient poles of the stator core are arranged in q-phase n groups, each group of the salient poles has z salient poles, the z salient poles are adjacently and concentratedly arranged, q, n and z are natural numbers, q is more than or equal to 2, and z is more than or equal to 2; the salient poles are arranged in the circumferential direction of the stator core in the order of a 1 st salient pole group, a 2 nd salient pole group, … and an n th salient pole group, and the salient poles in each group are arranged in the order of a 1 st salient pole group, a 2 nd salient pole group, … and a q-th salient pole group; the number of salient poles of the stator core is x-nqz, the number of salient poles of the rotor core is y-n (qz +1), and the mechanical angles between adjacent phases are A-360 DEG/nq; the included angles between adjacent salient poles in the stator core phase are all B-360 DEG/y, and the grooves between the adjacent salient poles in the phase are small grooves; the included angles between the adjacent salient poles between the adjacent phases of the stator iron core are all C-A-B (z-1), and the grooves between the adjacent salient poles between the adjacent phases are large grooves; the axial projection section of the salient pole of the stator core is of a trapezoidal structure with a wide lower bottom and a gradually narrowed front end.
Preferably, on an axial projection cross section of the salient pole of the stator core, an included angle between two waists is D, an included angle between the waist of the salient pole close to the small groove and the trapezoid height is a first included angle D1, an included angle between the waist of the salient pole close to the large groove and the trapezoid height is a second included angle D2, D is D1+ D2, an arc angle of the salient pole is set to D, D1 is greater than or equal to D, and D2 is greater than or equal to D.
Preferably, the salient pole arc angle d is 360 °/qy.
Preferably, the small groove comprises a small groove opening, a small groove body and a small groove bottom, and the small groove opening, the small groove body and the small groove bottom are equal in width; the large groove comprises a large notch, a large groove body and a large groove bottom, and the widths of the large notch, the large groove body and the large groove bottom are equal; and D1 ═ B/2, D2 ═ C/2.
Preferably, the winding is arranged on the outer periphery of the trapezoidal salient pole, the inner peripheral surface of the winding is attached to the trapezoidal salient pole, and the outer peripheral surface of the winding is parallel to the inner peripheral surface.
Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:
1. the utility model discloses design into axial projection cross-section for the bottom is wide, the front end is the trapezoidal that narrows gradually with stator core's salient pole to the axial projection sectional area of increase salient pole, and then increased the magnetic energy product and the motor power density of circular telegram winding on the salient pole.
2. The utility model discloses a further creative improvement optimizes two base angle sizes of trapezoidal salient pole for D1 be B/2, D2 be C/2, increased the axial projection sectional area of trapezoidal salient pole as far as possible, make the relative axial projection sectional area of axial projection sectional area be the salient pole of rectangle, the axial projection sectional area has increased 50%, and winding magnetic energy sum and motor power density can improve about 22%.
3. The utility model discloses a be close to corresponding recess axial projection cross-section for the rectangle by trapezoidal transformation to the full rate of winding groove is guaranteed in little recess space, and the installation is stepped down in order to guarantee in big recess space. In the process of installing the winding, the winding is wound on a wire frame through a simple machine, then the winding and the wire frame are sleeved on the salient pole together, in the sleeving process, the wire frame is tightly attached to one side of the small groove of the salient pole, and the wire frame can be easily installed by utilizing the abdication of one side of the large groove, and the principle of disassembly is the same.
4. The utility model discloses a laminating of winding inner peripheral surface trapezoidal salient pole, the outer peripheral face and the inner peripheral surface of winding are parallel for each partial thickness requirement of winding is unanimous, the coiling of being convenient for.
[ description of the drawings ]
Fig. 1 is a schematic structural diagram of a stator and a rotor of a trapezoidal salient pole switched reluctance motor provided by the present invention.
Fig. 2 is a schematic view of an installation structure of a stator and a winding of a trapezoidal salient pole switched reluctance motor provided by the present invention.
Fig. 3 is a schematic view of a prior art stator core and rotor core construction.
Fig. 4 is a schematic view of a prior art stator core and winding mounting arrangement.
Fig. 5 is a schematic view of a structure of another prior art stator core and rotor core.
Fig. 6 is a schematic view of an installation structure of another prior art stator core and winding.
The meanings of the labels in the figures are: 10-stator core, 11-salient pole, 12-small groove, 13-large groove, 20-rotor core, 21-salient pole, 30-winding.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The accompanying drawings are only for illustrative purposes and are only schematic drawings rather than actual drawings, which are not intended to limit the present disclosure, and in order to better illustrate the embodiments of the present disclosure, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product.
In the description of the present invention, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The utility model discloses a trapezoidal salient pole switched reluctance motor contains stator core 10, rotor core 20 and winding 30, and stator core 10 concentrates the stator core who arranges for each phase salient pole, and rotor core 20 is provided with the salient pole, all is equipped with the recess that is used for holding winding 30 between stator core's salient pole 11 and the salient pole 11. The salient poles 11 of each phase are arranged in a concentrated mode, namely the salient poles 11 of the stator core 10 are arranged in q-phase n groups, each group of salient poles 11 has z salient poles 11, the z salient poles 11 are arranged in a concentrated mode and are adjacent to each other, wherein q, n and z are natural numbers, q is more than or equal to 2, and z is more than or equal to 2; the salient poles 11 are arranged in the circumferential direction of the stator core 10 in the order of the 1 st salient pole, the 2 nd salient pole, …, the nth salient pole, and the salient poles 11 in each group are arranged in the order of the 1 st salient pole, the 2 nd salient pole, …, the q-th salient pole; by this design, the inter-phase mutual inductance between the phases can be reduced. On the premise of the above arrangement, the number of salient poles of the stator core 10 is x equals nqz, the number of salient poles of the rotor core 20 is y equals n (qz +1), and the mechanical angles between adjacent phases are all a equals 360 °/nq; the included angles between the adjacent salient poles 11 in the stator core phase are all B-360 DEG/y, and the grooves between the adjacent salient poles 11 in the phase are small grooves 12; the included angles between the adjacent salient poles 11 between the adjacent phases of the stator iron core are C-A-B (z-1), and the grooves between the adjacent salient poles 11 between the adjacent phases are large grooves 13; the axial projection section of the salient pole 11 of the stator core 10 is a trapezoidal structure with a wide lower bottom and a gradually narrowed front end. The utility model discloses a set up salient pole 11 with stator core 10 to trapezoidal, under the width of its front end and the same condition of prior art's salient pole 11, make the width increase of its bottom and side to realized having increased the axial projection sectional area of salient pole 11, and then increased the magnetic energy product and the purpose of motor power density of circular telegram winding on the salient pole 11.
This trapezoidal salient pole 11 improves on the basis of rectangle salient pole for the bottom widen of salient pole 11, if the range that the bottom widen is less, can not improve magnetic energy volume and motor power density obviously, consequently, the utility model discloses on above-mentioned technical scheme's basis, still provide more excellent scheme: on the axial projection section of the salient pole 11 of the stator core, an included angle between two waists is D, an included angle between the waist of one side, close to the small groove 12, of the salient pole 11 and the height of the trapezoid is a first included angle D1, an included angle between the waist of one side, close to the large groove, of the salient pole 11 and the height of the trapezoid is a second included angle D2, and the polar arc angle of the salient pole is D, so that D1+ D2 is defined, D1 is not less than D, and D2 is not less than D, so that the magnetic energy product and the power density of the motor are obviously improved.
The utility model discloses in, salient pole arc angle d is 360 °/qy, and the width of salient pole bottom can not be too wide, otherwise is used for filling the recess space undersize of winding 30, is unfavorable for the coiling of winding 30 and influences the performance of motor. Therefore, the utility model discloses on above-mentioned technical scheme's basis, still provide more excellent scheme: the small groove 12 comprises a small notch, a small groove body and a small groove bottom, and preferably, the widths of the small notch, the small groove body and the small groove bottom are equal; the big groove 13 comprises a big notch, a big groove body and a big groove bottom, preferably, the widths of the big notch, the big groove body and the big groove bottom are all equal, and D1 is B/2, and D2 is C/2. By means of the design, the axial projection section of the salient pole 11 is the largest within an allowable range, the axial projection section area can be increased by 50% compared with the case that the salient pole 11 is rectangular, and the magnetic energy and the power density of the motor can be improved by about 22%.
The utility model discloses in, winding 30 is in trapezoidal salient pole 11 periphery, and the laminating of inner peripheral surface of winding 30 trapezoidal salient pole 11, winding 30's outer peripheral face is parallel with the inner peripheral surface for each partial thickness requirement of winding 30 is unanimous, the preparation of being convenient for.
Adopt the technical scheme of the utility model, each parameter value is different, and this reluctance machine part example design parameter refers to table 1, and the different reluctance machine of field technical personnel design preparation according to relevant parameter.
TABLE 1
| Number of phases q | 2 | 2 | 3 | 3 | 3 | 4 | 4 | … |
| Number of salient poles z per phase in each group | 2 | 2 | 2 | 2 | 3 | 2 | 2 | … |
| Number of groups n | 1 | 2 | 1 | 2 | 1 | 1 | 2 | … |
| Stator salient pole number x is nqz | 4 | 8 | 6 | 12 | 9 | 8 | 16 | … |
| Rotor salient pole number y ═ n (qz +1) | 5 | 10 | 7 | 14 | 10 | 9 | 18 | … |
| Mechanical angle between phases A is 360/nq | 180.0 | 90.0 | 120.0 | 60.0 | 120.0 | 90.0 | 45.0 | … |
| Included angle B between adjacent salient poles is 360/y | 72.0 | 36.0 | 51.4 | 25.7 | 36.0 | 40.0 | 20.0 | … |
| Included angle of adjacent salient poles is A-B (z-1) | 108.0 | 54.0 | 68.6 | 34.3 | 48.0 | 50.0 | 25.0 | … |
| Optimum trapezoid angle D1 ═ B/2 | 36.0 | 18.0 | 25.7 | 12.8 | 18.0 | 20.0 | 10 | … |
| Optimum trapezoid angle D2 ═ C/2 | 54.0 | 27.0 | 34.3 | 14.2 | 24.0 | 25.0 | 12.5 |
The present invention is described below with reference to specific embodiments, see fig. 1 and 2, for the present invention provides a structural schematic diagram of a stator core and a rotor core of a trapezoidal salient pole switched reluctance motor, and an installation structural schematic diagram of a stator and a winding. In the present embodiment, a switched reluctance motor is shown in which the number of phases q is 3, the number n of groups of salient poles of the stator core 10 is 2, and the number z of salient poles of each phase of each group is 2; the number x of salient poles of a stator core 10 is 12, the number y of salient poles of a rotor core 20 is 14, an alternate mechanical angle A is 60.0 degrees, an included angle B of adjacent salient poles 11 in a stator core phase is 25.7 degrees, a groove between the adjacent salient poles 11 in the phase is a small groove 12, an included angle C of adjacent salient poles 11 outside the stator core phase is 34.3 degrees, and a groove between the adjacent salient poles 11 between the adjacent phases is a large groove 13; the axial projection section of the salient pole 11 of the stator core 10 is a trapezoidal structure with a wide lower bottom and a gradually narrowed front end. The salient pole arc angle is 360 degrees/qy is 8.6 degrees; the small groove 12 comprises a small notch, a small groove body and a small groove bottom, and the widths of the small notch, the small groove body and the small groove bottom are equal; big recess 13 includes big notch, big groove body and big groove end, and the width homogeneous phase at the bottom of big notch, big groove body and the big groove equals for the axial projection cross-section of little recess and big recess all forms a structure that is close to the rectangle, when the installation winding, guarantees the winding groove fullness rate with little groove space, guarantees to install in big groove space and lets the position. In the process of installing the winding, the winding is wound on a wire frame through a simple machine, then the winding and the wire frame are sleeved on the salient pole together, in the sleeving process, the wire frame is tightly attached to one side of the small groove of the salient pole, and one side of the large groove is used for abdicating, so that the winding can be easily installed. The included angle between the waist of the salient pole 11 close to the small groove 12 and the trapezoid height is a first included angle D1-B/2-12.8 degrees, the included angle between the waist of the salient pole 11 close to the large groove 13 and the trapezoid height is a second included angle D2-C/2-14.2 degrees, the included angle between the two trapezoidal waists of the stator core is D1-D2-27 degrees, it can be seen that D1 is not less than D, D2 is not less than D, the shape and the size of the stator salient pole are determined, and the axial projection sectional area of the stator salient pole is greatly increased relative to the salient pole with the rectangular shape due to the determined shape and the size. The winding is arranged on the outer periphery of the trapezoidal salient pole, the inner peripheral surface of the winding is attached to the trapezoidal salient pole, the outer peripheral surface of the winding is parallel to the inner peripheral surface, and the thickness requirements of all parts of the winding are consistent, so that the winding is convenient.
In order to be clearer the utility model discloses the advantage of comparing with prior art now will the utility model discloses contrast with prior art.
Referring to fig. 3 and 4, there are schematic structural diagrams of a stator core and a rotor core and corresponding schematic structural diagrams of stator core and winding installation in the prior art. This switched reluctance motor with the utility model discloses a difference lies in, its stator core's axial projection cross-section is conventional rectangle, the rectangle width with the utility model discloses the length of the last end (the shorter end) of well trapezoidal salient pole is the same.
Referring to fig. 5 and 6, there are schematic structural diagrams of another prior art stator core and rotor core, and corresponding mounting structures of the stator core and the winding. This switched reluctance motor with the utility model discloses a difference lies in, and the ratio of its stator salient pole number and rotor salient pole number is conventional three-phase 6/4 utmost point, and its stator core's axial projection cross-section is conventional rectangle, the rectangle width with the utility model discloses the length of the upper base (the shorter end) of well trapezoidal salient pole is the same.
To the utility model discloses and the above-mentioned two kinds of prior art's of switch reluctance machine's parameter carries out the comparison, and its result sees table 2.
TABLE 2
| Project \ figure number | FIG. 1 and FIG. 2 | FIGS. 3 and 4 | FIGS. 5 and 6 |
| Number of phases q | 3 | 3 | 3 |
| Stator outer diameter (mm) | 110 | 110 | 110 |
| Stator bore (mm) | 74 | 74 | 74 |
| Number x of salient poles of |
12 | 12 | 12 |
| Number of salient poles y of rotor | 14 | 14 | 8 |
| Salient pole arc angle 360 °/qy (°) | 8.6 | 8.6 | 15.0 |
| Salient pole form | Trapezoidal shape | Rectangle | Rectangle |
| D1、D2(°) | 12.8/14.2 | / | / |
| Axial projection section area (mm) of salient pole2) | 96.0 | 64.0 | 88.0 |
| Axial projection sectional area (mm) of groove2) | 58.0 | 64.0 | 42.0 |
From table 2 can see, although the utility model discloses a salient pole arc angle is less than conventional three-phase 6/4 utmost point motor, nevertheless passes through the utility model discloses an innovative improvement can design salient pole axial projection sectional area bigger, is greater than 9.1% of conventional three-phase 6/4 utmost point motor salient pole axial projection sectional area even, and for the salient pole be rectangle, other structures with the utility model discloses the same stator core, salient pole axial projection sectional area multiplicable 50% even has made apparent progress.
The above description is for the detailed description of the preferred possible embodiments of the present invention, but the embodiments are not intended to limit the scope of the present invention, and all equivalent changes or modifications accomplished under the technical spirit suggested by the present invention should fall within the scope of the present invention.
Claims (5)
1. The utility model provides a trapezoidal salient pole switched reluctance motor, contains stator core, rotor core and winding, its characterized in that: the stator core is a stator core with salient poles of all phases arranged in a concentrated mode, the rotor core is provided with the salient poles, grooves are formed between the salient poles of the stator core, the salient poles of the stator core are arranged in q-phase n groups, each group of the salient poles has z salient poles, the z salient poles are arranged in a concentrated mode and are adjacent to each other, q, n and z are natural numbers, q is larger than or equal to 2, and z is larger than or equal to 2; the salient poles are arranged in the circumferential direction of the stator core in the order of a 1 st salient pole group, a 2 nd salient pole group, … and an n th salient pole group, and the salient poles in each group are arranged in the order of a 1 st salient pole group, a 2 nd salient pole group, … and a q-th salient pole group; the number of salient poles of the stator core is x-nqz, the number of salient poles of the rotor core is y-n (qz +1), and the mechanical angles between adjacent phases are A-360 DEG/nq; the included angles between adjacent salient poles in the stator core phase are all B-360 DEG/y, and the grooves between the adjacent salient poles in the phase are small grooves; the included angles between the adjacent salient poles between the adjacent phases of the stator iron core are all C-A-B (z-1), and the grooves between the adjacent salient poles between the adjacent phases are large grooves; the axial projection section of the salient pole of the stator core is of a trapezoidal structure with a wide lower bottom and a gradually narrowed front end.
2. The trapezoidal salient pole switched reluctance machine of claim 1, wherein: on an axial projection section of a salient pole of the stator core, an included angle between two waists is D, an included angle between the waist of the salient pole close to one side of the small groove and the height of the trapezoid is a first included angle D1, an included angle between the waist of the salient pole close to one side of the large groove and the height of the trapezoid is a second included angle D2, D is D1+ D2, an arc angle of a salient pole of the salient pole is set to be D, D1 is not less than D, and D2 is not less than D.
3. The trapezoidal salient pole switched reluctance machine of claim 2, wherein: the salient pole arc angle d is 360 DEG/qy.
4. The trapezoidal salient pole switched reluctance machine of claim 2, wherein: the small groove comprises a small groove opening, a small groove body and a small groove bottom, and the small groove opening, the small groove body and the small groove bottom are equal in width; the large groove comprises a large notch, a large groove body and a large groove bottom, and the widths of the large notch, the large groove body and the large groove bottom are equal; and D1 ═ B/2, D2 ═ C/2.
5. The trapezoidal salient pole switched reluctance machine of claim 2, wherein: the winding is arranged on the outer periphery of the trapezoidal salient pole, the inner peripheral surface of the winding is attached to the trapezoidal salient pole, and the outer peripheral surface of the winding is parallel to the inner peripheral surface.
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| CN110768407A (en) * | 2019-12-04 | 2020-02-07 | 深圳华引动力科技有限公司 | Trapezoidal salient pole switched reluctance motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110768407A (en) * | 2019-12-04 | 2020-02-07 | 深圳华引动力科技有限公司 | Trapezoidal salient pole switched reluctance motor |
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