CN103904796A - Disc type motor - Google Patents
Disc type motor Download PDFInfo
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- CN103904796A CN103904796A CN201210584750.9A CN201210584750A CN103904796A CN 103904796 A CN103904796 A CN 103904796A CN 201210584750 A CN201210584750 A CN 201210584750A CN 103904796 A CN103904796 A CN 103904796A
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Abstract
The invention provides a disc type motor comprising a rotor and a stator, wherein the rotor is provided with a rotor core, the stator and the rotor are coaxially arranged, and a gap is mounted between the stator and the rotor. The stator comprises a stator core and a stator winding, wherein the stator core is provided with a plurality of grooves and a plurality of teeth arranged in a spaced manner on a circumferential direction, and the stator winding is mounted in the grooves. The rotor core comprises a magnetic conductive portion and a magnetic isolation portion mounted in the magnetic conductive portion. According to the disc type motor provided by the invention, the problem of a limited application scope of the disc type motor in the prior art is effectively solved.
Description
Technical field
The present invention is specifically related to a kind of disc type electric machine.
Background technology
The feature performance benefits such as it is little that disc type electric machine has axis size compared with conventional motors, and power density is high, torque/mass ratio is large, low cruise is steady, have obtained research more and more widely and application.Especially disc type electric machine has larger output torque, is particularly suitable for high-torque direct drive.
The torque that the disc type electric machine of prior art mainly adopts permanent magnet to produce drives, and permanent magnet sticks on rotor surface, and the inductance of motor d, q axle is identical, because the demagnetization problem of permanent magnet has caused limiting the range of application of disc type electric machine.
Summary of the invention
The present invention aims to provide a kind of disc type electric machine, to solve the problem that in prior art, disc type motor application is limited in scope.
To achieve these goals, the invention provides a kind of disc type electric machine, comprising: rotor, comprises rotor core; Stator, with rotor coaxial setting, has gap between stator and rotor, and stator comprises the stator core that is arranged at intervals with in a circumferential direction multiple grooves and multiple teeth and the stator winding that is placed in groove; Rotor core comprises magnetic conduction portion and magnetic isolation unit, and magnetic isolation unit is arranged in magnetic conduction portion.
Further, magnetic isolation unit is multiple, and multiple magnetic isolation units arrange along the circumferencial direction interval of rotor core.
Further, magnetic isolation unit comprises along the spaced multiple magnet isolation tanks of rotor core axial direction.
Further, magnet isolation tank comprises the first groove section and the second groove section that are interconnected, and the first groove section is extended and arranged along the circumferential direction of rotor, and the two ends of the first groove section are connected with respectively the second groove section, and the second groove section is extended and arranged along the axial direction of rotor.
Further, the curved shape of magnet isolation tank, be the outer surface towards stator of radiated entends to rotor core from the central axis of rotor core, and on the outer surface of rotor core, forming one or one group of deep-slotted chip breaker, the central axis of one or one group deep-slotted chip breaker radially intersects vertically with the central axis of rotor core.
Further, in magnet isolation tank, be filled with resin.
Further, rotor quantity is two, and the quantity of stator is one, and two rotors are separately positioned on the two ends of the axial direction of stator, between the salient pole center line of two rotors, has the first angle.
Further, tooth comprises: the first tooth, is along the circumferential direction evenly distributed on the first side of the axial direction of stator core; The second tooth, is along the circumferential direction evenly distributed on the second side of the axial direction of stator core, and the second tooth is corresponding one by one with the first tooth, between the center line of the second tooth and the center line of corresponding the first tooth, has the second angle.
Apply technical scheme of the present invention, disc type electric machine comprises: rotor, comprises rotor core; Stator, with rotor coaxial setting, has gap between stator and rotor, and stator comprises the stator core that is arranged at intervals with in a circumferential direction multiple grooves and multiple teeth and the stator winding that is placed in groove; Rotor core comprises magnetic conduction portion and magnetic isolation unit, and magnetic isolation unit is arranged in magnetic conduction portion.Disc type electric machine is by increasing every magnetosphere at internal rotor, block the axial magnetic flux flows of rotor d, lower motor d axle inductance, the inductance of motor d, q axle is not identical, makes motor can utilize reluctance torque to drive, and the disc type electric machine that adopts reluctance torque to drive needn't be worried applied environment and the demagnetization risk of permanent magnet, can be by the ambient temperature of motor application Gao Genggao, expand the range of application of disc type electric machine, and owing to not adopting permanent magnet, can greatly reduce the cost of motor.
Brief description of the drawings
The Figure of description that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the first embodiment of disc type electric machine of the present invention;
Fig. 2 shows the structural representation of the rotor of the disc type electric machine of Fig. 1;
Fig. 3 shows the partial structurtes schematic diagram of the rotor of Fig. 2;
Fig. 4 shows the magnetic isolation unit of rotor and the distribution schematic diagram of magnetic conduction portion of Fig. 2;
Fig. 5 shows the magnetic circuit line of disc type electric machine of Fig. 1 and the distribution schematic diagram of the salient pole center line of rotor;
Fig. 6 shows the enlarged diagram of the salient pole center line of Fig. 5;
Fig. 7 shows the stator structure schematic diagram of the disc type electric machine of Fig. 1;
Fig. 8 shows the center line of the first tooth of the stator of Fig. 7 and the distribution schematic diagram of the center line of the second tooth;
Fig. 9 shows the affect schematic diagram of α angle on the pulsation of motor reluctance torque in the disc type electric machine of the first embodiment;
Figure 10 shows the affect schematic diagram of β angle on the pulsation of motor cogging torque in the disc type electric machine of the first embodiment;
Figure 11 shows the structural representation of the rotor of the second embodiment of disc type electric machine of the present invention.
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
The present invention the first embodiment of disc type electric machine is provided, specifically referring to Fig. 1 to Fig. 4, disc type electric machine comprises rotor 10 and stator 20, rotor 10 comprises rotor core 11, stator 20 coaxially arranges with rotor 10, between stator 20 and rotor 10, has gap, and stator 20 comprises the stator core 21 that is arranged at intervals with in a circumferential direction multiple grooves 22 and multiple tooth 23 and the stator winding 24 that is placed in groove, rotor core 11 comprises magnetic conduction portion 12 and magnetic isolation unit 13, and magnetic isolation unit 13 is arranged in magnetic conduction portion 12.
The disc type electric machine of the present embodiment is by increasing every magnetosphere at internal rotor, block the axial magnetic flux flows of rotor d, lower motor d axle inductance, the inductance of motor d, q axle is not identical, the direction of d, q axle is shown in Figure 3, make motor can utilize reluctance torque to drive, the disc type electric machine that adopts reluctance torque to drive needn't be worried applied environment and the demagnetization risk of permanent magnet, can be by motor application to higher ambient temperature, expand the range of application of disc type electric machine, and owing to not adopting permanent magnet, can greatly reduce the cost of motor.
As shown in Figure 2 and Figure 4, magnetic isolation unit 13 is multiple, and multiple magnetic isolation units 13 arrange along the circumferencial direction interval of rotor core 11.As shown in Figure 3, magnetic isolation unit 13 comprises along the spaced multiple magnet isolation tanks 14 of rotor core 11 axial direction.Magnet isolation tank 14 comprises the first groove section 141 and the second groove section 142 that are interconnected, the first groove section 141 is extended and is arranged along the circumferential direction of rotor, the two ends of the first groove section 141 are connected with respectively the second groove section 142, the second groove section 142 is extended and is arranged along the axial direction of rotor, and its end extends to the near surface of rotor towards stator.By adopting the structure of above-mentioned multilayer magnet isolation tank, can make motor d, q axle inductance compare individual layer magnet isolation tank structure and have larger difference, under identical drive current, can produce larger reluctance torque, reduce the copper loss of motor, improve electric efficiency.Further two in magnetic bridge interval substantially keep constant, can effectively avoid because rotor q axle magnetic circuit occurs that the local saturated q axle inductance causing declines and the increase of torque pulsation.Because the magnetic isolation unit in the rotor of the present embodiment is positioned at rotor, increase the mechanical strength of rotor, be adapted at lower running at a high speed.In order further to increase the mechanical strength of rotor, magnet isolation tank 14 use resins are filled, because resin is non-magnetic, so increased magnetic isolation unit every magnetic energy power.
The present embodiment further preferably, as shown in Figure 5 and Figure 6, disc type electric machine is the structure of single stator double-sided rotors, be specially, rotor 10 quantity are two, the quantity of stator 20 is one, and two rotors 10 are separately positioned on the two ends of the axial direction of stator 20, has the first angle α between the salient pole center line 15 of two rotors 10.The rotor core of the present embodiment adopts dust core casting to form, can simplified manufacturing technique, reduce production cost.It should be noted that, all angles that relate in the application are electric angle, electric angle=mechanical angle X motor number of pole-pairs, and electric angle equals mechanical angle and is multiplied by motor number of pole-pairs.
Fig. 9 has represented that the angle α between the salient pole center line of rotor affects schematic diagram to motor torque ripple, in figure α ' for angle between two rotor with salient pole center lines in prior art be the influence curve of 0 o'clock, and as can be seen from Figure 9, motor torque ripple reduces along with the existence of salient pole center line angle α, in angle adjustable extent, there is optimum angle α
1make torque pulsation reach minimum value, optimum angle α
1change with motor slot number cooperation value.
As shown in Figure 7 and Figure 8, the tooth 23 of stator 20 comprises the first tooth 231 and the second tooth 232, the first tooth 231 is along the circumferential direction evenly distributed on the first side of the axial direction of stator core 21, the second tooth 232 is along the circumferential direction evenly distributed on the second side of the axial direction of stator core 21, the second tooth 232 is corresponding one by one with the first tooth 231, between the center line of the second tooth 232 and the center line of corresponding the first tooth 231, has the second angle β.The stator of the present embodiment is the bilateral structure that groove is set, and the both sides of stator core have towards the equally distributed groove of rotor and tooth, and groove and space of teeth setting.
Figure 10 has represented the affect schematic diagram of β angle on motor torque ripple, wherein β ' for angle between the first tooth in prior art and the second tooth be the influence curve of 0 o'clock, as can be seen from Figure 10, motor torque ripple is along with the second angle β exists and reduces, in the adjustable extent of the second angle, there is optimum angle β
1make torque pulsation reach minimum value, optimum angle β
1change with motor slot number cooperation value.
The present invention also provides the second embodiment of disc type electric machine, the disc type electric machine structure of the disc type electric machine of the present embodiment and above-mentioned the first embodiment is basic identical, difference is only, the curved shape of magnet isolation tank 14, be radiated entends to the outer surface of described rotor core from the central axis of described rotor core, and on the outer surface of described rotor core, form one or one group of deep-slotted chip breaker, the central axis of described one or one group deep-slotted chip breaker radially intersects vertically with the central axis of described rotor core, concrete rotor shown in Figure 11.The technique effect of the present embodiment is identical with the technique effect of the first embodiment.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a disc type electric machine, comprising:
Rotor (10), comprises rotor core (11);
Stator (20), coaxially arrange with described rotor (10), between described stator (20) and described rotor (10), have gap, described stator (20) comprises the stator core (21) that is arranged at intervals with in a circumferential direction multiple grooves (22) and multiple tooth (23) and the stator winding (24) that is placed in described groove;
It is characterized in that, described rotor core (11) comprises magnetic conduction portion (12) and magnetic isolation unit (13), and described magnetic isolation unit (13) is arranged in described magnetic conduction portion (12).
2. disc type electric machine according to claim 1, is characterized in that, described magnetic isolation unit (13) is multiple, and multiple described magnetic isolation units (13) arrange along the circumferencial direction interval of described rotor core (11).
3. disc type electric machine according to claim 1 and 2, is characterized in that, described magnetic isolation unit (13) comprises along described rotor core (11) the spaced multiple magnet isolation tanks of axial direction (14).
4. disc type electric machine according to claim 3, it is characterized in that, described magnet isolation tank (14) comprises the first groove section (141) and the second groove section (142) that are interconnected, described the first groove section (141) is extended and is arranged along the circumferential direction of described rotor, the two ends of described the first groove section (141) are connected with respectively described the second groove section (142), and described the second groove section (142) is extended and arranged along the axial direction of described rotor.
5. disc type electric machine according to claim 3, it is characterized in that, the curved shape of described magnet isolation tank (14), be the outer surface towards described stator of radiated entends to described rotor core from the central axis of described rotor core, and on the outer surface of described rotor core, forming one or one group of deep-slotted chip breaker, the central axis of described one or one group deep-slotted chip breaker radially intersects vertically with the central axis of described rotor core.
6. disc type electric machine according to claim 3, is characterized in that, described magnet isolation tank is filled with resin in (14).
7. disc type electric machine according to claim 1, it is characterized in that, described rotor (10) quantity is two, the quantity of described stator (20) is one, two described rotors (10) are separately positioned on the two ends of the axial direction of described stator (20), between the salient pole center line (15) of two described rotors (10), have the first angle (α).
8. disc type electric machine according to claim 7, is characterized in that, described tooth (23) comprising:
The first tooth (231), is along the circumferential direction evenly distributed on the first side of the axial direction of described stator core (21);
The second tooth (232), along the circumferential direction be evenly distributed on the second side of the axial direction of described stator core (21), described the second tooth (232) is corresponding one by one with described the first tooth (231), between the center line of described the second tooth (232) and the center line of corresponding described the first tooth (231), has the second angle (β).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210584750.9A CN103904796B (en) | 2012-12-27 | 2012-12-27 | Disc type electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210584750.9A CN103904796B (en) | 2012-12-27 | 2012-12-27 | Disc type electric machine |
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| Publication Number | Publication Date |
|---|---|
| CN103904796A true CN103904796A (en) | 2014-07-02 |
| CN103904796B CN103904796B (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210584750.9A Active CN103904796B (en) | 2012-12-27 | 2012-12-27 | Disc type electric machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104158361A (en) * | 2014-09-03 | 2014-11-19 | 肖振霞 | Rudder-shaped stator double-rotor permanent magnet generator |
| DE102016207943A1 (en) * | 2016-05-09 | 2017-11-09 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Motor and / or generator device |
| CN110337769A (en) * | 2017-02-24 | 2019-10-15 | 利莱森玛电机公司 | Axial flux rotary-type motor |
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| CN1945941A (en) * | 2005-10-05 | 2007-04-11 | 日产自动车株式会社 | Electric rotary machine |
| CN101860159A (en) * | 2010-04-13 | 2010-10-13 | 深圳市轴心自控技术有限公司 | Novel switched reluctance motor |
| CN1897419B (en) * | 2005-06-16 | 2011-06-15 | 富士通将军股份有限公司 | Axial air-gap motor |
| CN102684428A (en) * | 2012-05-14 | 2012-09-19 | 华中科技大学 | Modular multi-disc type permanent magnet brushless motor |
| CN102790458A (en) * | 2012-03-05 | 2012-11-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet auxiliary synchronized reluctance motor rotor and manufacturing method thereof and motor |
| CN202997733U (en) * | 2012-12-27 | 2013-06-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Disc type motor |
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2012
- 2012-12-27 CN CN201210584750.9A patent/CN103904796B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1897419B (en) * | 2005-06-16 | 2011-06-15 | 富士通将军股份有限公司 | Axial air-gap motor |
| CN1945941A (en) * | 2005-10-05 | 2007-04-11 | 日产自动车株式会社 | Electric rotary machine |
| CN101860159A (en) * | 2010-04-13 | 2010-10-13 | 深圳市轴心自控技术有限公司 | Novel switched reluctance motor |
| CN102790458A (en) * | 2012-03-05 | 2012-11-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet auxiliary synchronized reluctance motor rotor and manufacturing method thereof and motor |
| CN102684428A (en) * | 2012-05-14 | 2012-09-19 | 华中科技大学 | Modular multi-disc type permanent magnet brushless motor |
| CN202997733U (en) * | 2012-12-27 | 2013-06-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Disc type motor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104158361A (en) * | 2014-09-03 | 2014-11-19 | 肖振霞 | Rudder-shaped stator double-rotor permanent magnet generator |
| CN104158361B (en) * | 2014-09-03 | 2016-07-06 | 肖振霞 | A kind of steering wheel shape stator and double-rotor magneto |
| DE102016207943A1 (en) * | 2016-05-09 | 2017-11-09 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Motor and / or generator device |
| CN110337769A (en) * | 2017-02-24 | 2019-10-15 | 利莱森玛电机公司 | Axial flux rotary-type motor |
| US11569717B2 (en) | 2017-02-24 | 2023-01-31 | Moteurs Leroy-Somer | Axial flux rotary electric machine |
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| Publication number | Publication date |
|---|---|
| CN103904796B (en) | 2015-10-21 |
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