CN103904796B - Disc type electric machine - Google Patents
Disc type electric machine Download PDFInfo
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- CN103904796B CN103904796B CN201210584750.9A CN201210584750A CN103904796B CN 103904796 B CN103904796 B CN 103904796B CN 201210584750 A CN201210584750 A CN 201210584750A CN 103904796 B CN103904796 B CN 103904796B
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Abstract
The invention provides a kind of disc type electric machine, comprising: rotor, comprise rotor core; Stator, arranges with rotor coaxial, has gap between stator and rotor, and stator comprises the stator core being arranged at intervals with multiple groove and multiple tooth in a circumferential direction and the stator winding being placed in groove; Rotor core comprises magnetic-conductance portion and magnetic isolation unit, and magnetic isolation unit is arranged in magnetic-conductance portion.Present invention efficiently solves the problem that in prior art, disc type motor application is limited in scope.
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 axial dimension compared with conventional motors, and power density is high, torque/mass ratio is large, low cruise is steady, obtain research and apply more and more widely.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 is pasted onto rotor surface, and the inductance of motor d, q axle is identical, because the demagnetization problem of permanent magnet causes the range of application limiting 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, comprise rotor core; Stator, arranges with rotor coaxial, has gap between stator and rotor, and stator comprises the stator core being arranged at intervals with multiple groove and multiple tooth in a circumferential direction and the stator winding being placed in groove; Rotor core comprises magnetic-conductance portion and magnetic isolation unit, and magnetic isolation unit is arranged in magnetic-conductance portion.
Further, magnetic isolation unit is multiple, and multiple magnetic isolation unit is arranged along the circumferencial direction interval of rotor core.
Further, magnetic isolation unit comprises along the spaced multiple magnet isolation tank 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 along the circumferential direction of rotor, and the two ends of the first groove section are connected to the second groove section, and the second groove section is extended along the axial direction of rotor.
Further, the curved shape of magnet isolation tank, the outer surface towards stator of rotor core is radially extended to from the central axis of rotor core, and one or one group of deep-slotted chip breaker is formed on the outer surface of rotor core, the central axis of one or one group deep-slotted chip breaker is radially crossing with the central axis upright of rotor core.
Further, resin is filled with in magnet isolation tank.
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, has the first angle between the salient pole center line of two rotors.
Further, tooth comprises: the first tooth, is along the circumferential direction evenly distributed on the first side of the axial direction of stator core; Second tooth, be along the circumferential direction evenly distributed on the second side of the axial direction of stator core, the second tooth is corresponding one by one with the first tooth, and the center line of the second tooth has the second angle with between the center line of the first corresponding tooth.
Apply technical scheme of the present invention, disc type electric machine comprises: rotor, comprises rotor core; Stator, arranges with rotor coaxial, has gap between stator and rotor, and stator comprises the stator core being arranged at intervals with multiple groove and multiple tooth in a circumferential direction and the stator winding being placed in groove; Rotor core comprises magnetic-conductance portion and magnetic isolation unit, and magnetic isolation unit is arranged in magnetic-conductance portion.Disc type electric machine is by increasing every magnetosphere at internal rotor, block the axial magnetic flux flows of rotor d, reduce motor d axle inductance, the inductance of motor d, q axle is not identical, makes motor that reluctance torque can be utilized to drive, and the disc type electric machine adopting reluctance torque to drive need not worry applied environment and the demagnetization risk of permanent magnet, can 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, greatly can reduce the cost of motor.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, 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 the rotor of Fig. 2 and the distribution schematic diagram of magnetic-conductance portion;
Fig. 5 shows the distribution schematic diagram of the magnetic circuit line of the disc type electric machine of Fig. 1 and 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 distribution schematic diagram of the center line of the first tooth of the stator of Fig. 7 and the center line of the second tooth;
Fig. 9 shows α angle in the disc type electric machine of the first embodiment affects schematic diagram to magnetic resistance of motor torque pulsation;
What Figure 10 showed that β angle in the disc type electric machine of the first embodiment pulses on motor cogging torque affects schematic diagram;
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, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Invention provides the first embodiment of disc type electric machine, specifically see Fig. 1 to Fig. 4, disc type electric machine comprises rotor 10 and stator 20, rotor 10 comprises rotor core 11, stator 20 and rotor 10 are coaxially arranged, and have gap between stator 20 and rotor 10, and stator 20 is included in the stator core 21 being circumferentially arranged at intervals with multiple groove 22 and multiple tooth 23 and the stator winding 24 being placed in groove, rotor core 11 comprises magnetic-conductance portion 12 and magnetic isolation unit 13, and magnetic isolation unit 13 is arranged in magnetic-conductance 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, reduce 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 that reluctance torque can be utilized to drive, the disc type electric machine adopting reluctance torque to drive need not worry applied environment and the demagnetization risk of permanent magnet, can by motor application to higher ambient temperature, expand the range of application of disc type electric machine, and owing to not adopting permanent magnet, the cost of motor greatly can be reduced.
As shown in Figure 2 and Figure 4, magnetic isolation unit 13 is multiple, and multiple magnetic isolation unit 13 is arranged 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 tank 14 of rotor core 11 axial direction.Magnet isolation tank 14 comprises the first groove section 141 and the second groove section 142 be interconnected, first groove section 141 is extended along the circumferential direction of rotor, the two ends of the first groove section 141 are connected to the second groove section 142, second groove section 142 is extended 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 there is larger difference, larger reluctance torque can be produced under identical drive current, 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 saturated q axle inductance that causes in local declines and the increase of torque pulsation.Because the magnetic isolation unit in the rotor of the present embodiment is positioned at rotor, add the mechanical strength of rotor, be applicable to operating at high speeds.In order to increase the mechanical strength of rotor further, magnet isolation tank 14 is filled with resin, because resin is non-magnetic, so add 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 is 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, reduces production cost.It should be noted that, all angles related in the application are electric angle, and electric angle=mechanical angle X motor number of pole-pairs, electric angle equals mechanical angle and is multiplied by motor number of pole-pairs.
Angle α between the salient pole center line that Fig. 9 illustrates rotor affects schematic diagram to motor torque ripple, in figure, α ' is influence curve when angle is 0 between two rotor with salient pole center lines in prior art, and as can be seen from Figure 9, motor torque ripple reduces along with the existence of salient pole centerlines α, in angle adjustable extent, there is optimum angle α
1torque pulsation is made to reach minimum value, optimum angle α
1change with the change of 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, first tooth 231 is along the circumferential direction evenly distributed on the first side of the axial direction of stator core 21, second tooth 232 is along the circumferential direction evenly distributed on the second side of the axial direction of stator core 21, second tooth 232 is corresponding one by one with the first tooth 231, and the center line of the second tooth 232 has the second angle β with between the center line of the first corresponding tooth 231.The stator of the present embodiment is the bilateral structure arranging groove, and the both sides of stator core have towards the equally distributed groove of rotor and tooth, and groove and space of teeth are arranged.
Figure 10 illustrates β angle affects schematic diagram to motor torque ripple, wherein β ' is influence curve when angle is 0 between the first tooth and the second tooth in prior art, as can be seen from Figure 10, motor torque ripple exists along with the second angle β and reduces, in the adjustable extent of the second angle, there is optimum angle β
1torque pulsation is made to reach minimum value, optimum angle β
1change with the change of motor slot number cooperation value.
Present invention also offers the second embodiment of disc type electric machine, the disc type electric machine of the present embodiment is substantially identical with the disc type electric machine structure of above-mentioned first embodiment, difference is only, the curved shape of magnet isolation tank 14, radially extend to the outer surface of described rotor core from the central axis of described rotor core, and one or one group of deep-slotted chip breaker is formed on the outer surface of described rotor core, the central axis of described one or one group deep-slotted chip breaker is radially crossing with the central axis upright of described rotor core, rotor specifically 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 done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a disc type electric machine, comprising:
Rotor (10), comprises rotor core (11);
Stator (20), coaxially arrange with described rotor (10), have gap between described stator (20) and described rotor (10), described stator (20) is included in the stator core (21) being circumferentially arranged at intervals with multiple groove (22) and multiple tooth (23) and the stator winding (24) being placed in described groove;
It is characterized in that, described rotor core (11) comprises magnetic-conductance portion (12) and magnetic isolation unit (13), and described magnetic isolation unit (13) is arranged in described magnetic-conductance portion (12);
Described magnetic isolation unit (13) comprises along the spaced multiple magnet isolation tank (14) of described rotor core (11) axial direction.
2. disc type electric machine according to claim 1, is characterized in that, described magnetic isolation unit (13) is for multiple, and multiple described magnetic isolation unit (13) is arranged along the circumferencial direction interval of described rotor core (11).
3. disc type electric machine according to claim 1, 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 first groove section (141) is extended along the circumferential direction of described rotor, the two ends of described first groove section (141) are connected to described second groove section (142), and described second groove section (142) is extended along the axial direction of described rotor.
4. disc type electric machine according to claim 1, it is characterized in that, described magnet isolation tank (14) curved shape, the outer surface towards described stator of described rotor core is radially extended to from the central axis of described rotor core, and on the outer surface of described rotor core, forming one group of deep-slotted chip breaker, the central axis of described one group of deep-slotted chip breaker is radially crossing with the central axis upright of described rotor core.
5. disc type electric machine according to claim 1, is characterized in that, described magnet isolation tank is filled with resin in (14).
6. 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), have the first angle (α) between the salient pole center line (15) of two described rotors (10).
7. disc type electric machine according to claim 6, is characterized in that, described tooth (23) comprising:
First tooth (231), is along the circumferential direction evenly distributed on the first side of the axial direction of described stator core (21);
Second tooth (232), along the circumferential direction be evenly distributed on the second side of the axial direction of described stator core (21), described second tooth (232) is corresponding one by one with described first tooth (231), and the center line of described second tooth (232) has the second angle (β) with between the center line of corresponding described first tooth (231).
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 CN103904796A (en) | 2014-07-02 |
| CN103904796B true CN103904796B (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210584750.9A Active CN103904796B (en) | 2012-12-27 | 2012-12-27 | Disc type electric machine |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| FR3063400B1 (en) * | 2017-02-24 | 2021-11-19 | Leroy Somer Moteurs | ELECTRICAL ROTATING MACHINE WITH AXIAL FLOW |
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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 |
-
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 |
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