CN103929026A - Permanent magnet motor - Google Patents
Permanent magnet motor Download PDFInfo
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- CN103929026A CN103929026A CN201310016844.0A CN201310016844A CN103929026A CN 103929026 A CN103929026 A CN 103929026A CN 201310016844 A CN201310016844 A CN 201310016844A CN 103929026 A CN103929026 A CN 103929026A
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Abstract
The invention provides a permanent magnet motor. The permanent magnet motor comprises an inner rotor, a stator and an outer rotor. The inner rotor comprises an inner rotor iron core; the stator is arranged around the inner rotor, a gap is formed between the stator and the inner rotor, and the stator comprises a plurality of stator grooves, a stator iron core with a plurality of teeth and a stator windings arranged in the stator grooves in the peripheral direction at intervals; the outer rotor and the inner rotor are coaxially arranged and rotate at the same speed and in the same direction, the outer rotor is arranged around the stator, a gap is formed between the outer rotor and the stator, and a plurality of magnetic pole grooves which are arranged side by side in the radial direction of the inner rotor are formed in the inner rotor iron core. By means of the permanent magnet motor, the problems that in the prior art, the motor drive current of a permanent magnet motor is larger and the efficiency of the motor is low are solved.
Description
Technical field
The present invention is specifically related to a kind of magneto.
Background technology
Dual rotor permanent magnetic motor compares with conventional motors that to have axis size little, the feature performance benefits such as power density is high, torque/mass ratio is large, low cruise is steady, be widely applied, yet in prior art, the permanent magnet of magneto mostly adopts surface-mount type structure, be that permanent magnet is all arranged on rotor on the surface of stator, but the magneto of prior art does not increase, the utilization of reluctance torque causes motor drive current greatly and electric efficiency is low.
Summary of the invention
The present invention aims to provide a kind of magneto, the large and low problem of electric efficiency with the motor drive current that solves magneto in prior art.
To achieve these goals, the invention provides a kind of magneto, comprising: internal rotor, comprises internal rotor iron core; Stator, also and between internal rotor has gap around internal rotor setting, and stator is included in the stator winding that circumferencial direction is arranged at intervals with the stator core of a plurality of stator slots and a plurality of teeth and is placed in stator slot; External rotor, external rotor is with the coaxial setting of internal rotor and with identical speed rotating Vortex, and external rotor also and between stator has gap around stator setting, and internal rotor iron core is provided with a plurality of the first magnetic pole grooves that are set up in parallel along the radial direction of internal rotor.
Further, external rotor comprises outer rotor iron core, is provided with the second permanent magnet on the inner surface of outer rotor iron core, and the angle between the first pole center line of internal rotor and the second pole center line of corresponding external rotor is between 20 ° to 45 °.
Further, external rotor comprises outer rotor iron core, outer rotor iron core inside is provided with along the radial direction of external rotor multilayer the second magnetic pole groove spaced apart, on outer rotor iron core, be provided with many groups the second magnetic pole unit, every group of second magnetic pole unit comprises the second permanent magnet being separately positioned in the second magnetic pole groove, the axial stack magnetic line of force of a plurality of the second permanent magnets in every group of second magnetic pole unit points to the consistent common magnetic pole N of formation or S, between the first pole center line of internal rotor and the second pole center line of corresponding external rotor, has the first angle.
Further, on internal rotor iron core, be provided with many groups the first magnetic pole unit, every group of first magnetic pole unit comprises a plurality of the first permanent magnets, a plurality of the first permanent magnets are separately positioned in the first different magnetic pole grooves, the axial stack magnetic line of force of the first permanent magnet of every group of first magnetic pole unit points to the consistent common magnetic pole N of formation or S, and external rotor is oppositely arranged with identical magnetic pole and internal rotor.
Further, stator core is loop configuration, stator slot comprises the first groove and the second groove, tooth comprises the first tooth and the second tooth, the first groove and the first tooth are disposed on the inwall of stator core along the circumferencial direction of stator, the second groove and the second tooth are disposed on the outer wall of stator core along the circumferencial direction of stator, the center line of the first tooth and with the center line of adjacent the second corresponding tooth of the first tooth between there is the second angle.
Further, the first groove is 1:2 with the quantity ratio of the second groove.
Further, the inside of internal rotor iron core is provided with a plurality of magnetic flux stop parts, and a plurality of magnetic flux stop parts are arranged on respectively in the first magnetic pole groove, and magnetic flux stop part is every magnetizing mediums, and internal rotor iron core is magnetic conductive media.
Further, magnetic flux stop part is corresponding with external rotor magnetic poles, between the second pole center line of the center line of magnetic flux stop part and corresponding external rotor magnetic poles, has the 3rd angle.
Further, the 3rd angle is between 40 ° to 50 °.
Further, stator core is comprised of a plurality of stator pieces successively clamping, splicing gap between a plurality of stator pieces is positioned in the middle of the tooth of stator, has formed iron core yoke portion between the first tooth of stator core both sides and the second tooth, and the iron core yoke portion that the is positioned at place of each stator piece winds the line.
Apply technical scheme of the present invention, magneto comprises: internal rotor, comprises internal rotor iron core; Stator, also and between internal rotor has gap around internal rotor setting, and stator is included in the stator winding that circumferencial direction is arranged at intervals with the stator core of a plurality of stator slots and a plurality of teeth and is placed in stator slot; External rotor, external rotor is with the coaxial setting of internal rotor and with identical speed rotating Vortex, and external rotor also and between stator has gap around stator setting, and internal rotor iron core is provided with a plurality of the first magnetic pole grooves that are set up in parallel along the radial direction of internal rotor.Internal rotor have multilayer the first magnetic pole groove structure and same tangential in same polarity distribution, the magnetic pole N and the S that form internal rotor are alternately distributed, because a plurality of the first magnetic pole grooves cause the magnetic circuit of internal rotor asymmetric along being radially set up in parallel of internal rotor, produced reluctance torque, the increase of reluctance torque utilization is conducive to reduce motor drive current, reduce the loss of electric machine, improve the whole efficiency of motor.
Accompanying drawing explanation
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 magneto of the present invention;
Fig. 2 shows the structural representation of internal rotor of the magneto of Fig. 1;
Fig. 3 shows the distribution schematic diagram of pole center line of the magneto of Fig. 1;
Fig. 4 shows the structural representation of stator of the magneto of Fig. 1;
Fig. 5 shows the distribution schematic diagram of tooth center line of the stator of Fig. 4;
Fig. 6 shows the structural representation of the stator piece of Fig. 4;
Fig. 7 shows the outer-rotor structure schematic diagram of the magneto of the second embodiment of the present invention;
Fig. 8 shows the distribution schematic diagram of pole center line of inner and outer Rotator of the magneto of Fig. 7;
Fig. 9 shows the inner rotor core schematic diagram of the 3rd embodiment of magneto of the present invention;
Figure 10 shows the pole center line of external rotor of magneto and the distribution schematic diagram of the magnetic flux stop part center line of internal rotor of Fig. 9;
Figure 11 shows the drive current of magneto and the contrast schematic diagram of prior art of the first embodiment;
Figure 12 shows α angle in the first embodiment of the magneto schematic diagram that affects on the synthetic electromagnetic torque of motor;
Figure 13 shows β angle in the 3rd embodiment of the magneto schematic diagram that affects on the synthetic electromagnetic torque of motor;
Figure 14 shows γ angle in the first embodiment of the magneto schematic diagram that affects on motor cogging torque;
Figure 15 shows θ angle in the second embodiment of the magneto schematic diagram that affects on motor cogging torque.
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in 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 invention provides the first embodiment of magneto, referring to Fig. 1 and Fig. 2, the magneto of the present embodiment comprises internal rotor 10, stator 20 and external rotor 30, internal rotor 10 comprises internal rotor iron core 11, stator 20 around internal rotor 10, arrange and and internal rotor 10 between there is gap, stator 20 is included in the stator winding 24 that circumferencial direction is arranged at intervals with the stator core 21 of a plurality of stator slots 22 and a plurality of tooth 23 and is placed in groove, external rotor 30 is with the coaxial setting of internal rotor 10 and with identical speed rotating Vortex, external rotor 30 around stator 20, arrange and and stator 20 between there is gap, internal rotor iron core 11 is provided with a plurality of the first magnetic pole grooves 13 that are set up in parallel along the radial direction of internal rotor 10.
Internal rotor 10 have multilayer the first magnetic pole groove 13 structure and same tangential in same polarity distribution, form the magnetic pole of internal rotor as shown in Figure 2, magnetic pole N and S are alternately distributed, because a plurality of the first magnetic pole grooves cause the magnetic circuit of internal rotor asymmetric along being radially set up in parallel of internal rotor 10, form d axle and q axle inductance unequal, produced reluctance torque, the increase of reluctance torque utilization is conducive to reduce motor drive current, reduce the loss of electric machine, improve the whole efficiency of motor.Figure 11 has illustrated that the magneto A of prior art and the magneto B of the present embodiment are in same output torque situation, the contrast of motor drive current size, from Figure 11, can obviously find out, the magneto of the present embodiment motor drive current in same output torque situation is less than prior art.
As shown in figures 1 and 3, external rotor 30 in the present embodiment comprises outer rotor iron core 31, on the inner surface of outer rotor iron core 31, be provided with the second permanent magnet 32 that is alternately distributed magnetic pole N and S, angle α between the second pole center line 34 of the first pole center line 14 of internal rotor 10 and corresponding external rotor is between 20 ° to 45 °, and the pole center line of external rotor is led over internal rotor pole center line in rotor direction.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.
Figure 12 has illustrated that external rotor magnetic poles center line forms the impact of α angle on the synthetic electromagnetic torque of motor with inboard rotor pole center line in rotor direction, as can be seen from the figure, the pole center line of inner and outer rotors is staggered to certain angle can be so that motor obtains larger synthetic electromagnetic torque under identical electric current, and the pole center line of outside rotors is when the angle of 20 ° to 45 ° of the leading inboard rotors of rotor direction, be angle α between 20 ° to 45 ° time, under identical electric current, the synthetic electromagnetic torque effective value of motor is maximum.
On internal rotor iron core, be provided with many groups the first magnetic pole unit, every group of first magnetic pole unit comprises a plurality of the first permanent magnets 12, a plurality of the first permanent magnets 12 are separately positioned in the first different magnetic pole grooves 13, the axial stack magnetic line of force of the first permanent magnet 12 of every group of first magnetic pole unit points to the consistent common magnetic pole N of formation or S, and external rotor 30 is oppositely arranged with identical N or S polarity and internal rotor 10.By inner and outer rotors is oppositely arranged with identical polarity, can under identical electric current, produce larger torque so that motor is compared opposed polarity to be oppositely arranged, thereby reduce the winding loss of motor, increased electric efficiency.
As shown in Figure 4 and Figure 5, stator core 21 is loop configuration, stator slot 22 comprises the first groove 221 and the second groove 222, tooth 23 comprises the first tooth 231 and the second tooth 232, the first groove 221 and the first tooth 231 are disposed on the inwall of stator core 21 along the circumferencial direction of stator, the second groove 222 and the second tooth 232 are disposed on the outer wall of stator core 21 along the circumferencial direction of stator, the center line of the first tooth 231 and with the center line of adjacent the second corresponding tooth 232 of the first tooth 231 between there is the second angle γ.In manufacture craft, by cutting out the first groove 221 and the second groove 222 to form the first tooth and the second tooth on stator core 21, make and the spaced apart setting adjacent with the first groove of the first tooth, make and the spaced apart setting adjacent with the second groove of the second tooth.Figure 14 has represented the first tooth center line of stator and the impact of the angle of the second tooth center line on the pulsation of motor cogging torque, as can be seen from Figure 14, γ ' is the motor cogging torque fluctuation amplitude of motor in the prior art of 0 degree, and motor cogging torque fluctuation amplitude reduces along with the existence of γ angle, in the adjustable extent of the second angle γ, exist optimum angle γ 1 to make cogging torque pulsation reach minimum value, optimum angle γ 1 changes with motor slot number cooperation value.
The quantity of the first groove 221 and the second groove 222 is than being 1:2.Due to the outer wall of stator, to compare inner wall space larger, and the cogging torque that can effectively reduce external rotor by more groove is set at outer wall is pulsed.
Stator core 21 is comprised of a plurality of stator pieces successively clamping, splicing gap between a plurality of stator pieces is positioned in the middle of the tooth of stator, between the first tooth of stator core 21 both sides and the second tooth, formed iron core yoke portion, each stator piece is positioned at iron core yoke portion place and winds the line.Stator core 21 is comprised of a plurality of stator pieces 111 successively clamping.Between the first tooth of stator core 21 both sides and the second tooth, formed the yoke portion of stator core, stator core adopts splicing construction, splicing gap is positioned in the middle of the tooth of stator, each stator piece winds the line in yoke portion separately, each stator piece is positioned at yoke portion place and winds the line, as shown in Figure 6, stator core is spliced into ring by stator piece 111 and forms, the shape of stator piece determines according to concrete stator core shape, and the yoke portion at stator core arranges buckle structure, clamping forms stator core so successively.By adopting said method can effectively improve the effective rate of utilization of motor electromagnetic steel plate materials, and improve the speed of stator winding, reduced the production time.
The present invention also provides the second embodiment of magneto, specifically referring to Fig. 7 and Fig. 8, the magneto of the present embodiment comprises internal rotor, stator and external rotor 30, the structure of the magneto of the present embodiment and annexation are basic identical with the magneto of the first embodiment, and difference is only, outer rotor iron core 31 inside are provided with along the radial direction of external rotor 30 multilayer the second magnetic pole groove 33 spaced apart, on outer rotor iron core 31, be provided with many groups the second magnetic pole unit, every group of second magnetic pole unit comprises the second permanent magnet 32 being separately positioned in the second different magnetic pole grooves 33, the axial stack magnetic line of force of a plurality of the second permanent magnets 32 in every group of second magnetic pole unit points to the consistent common magnetic pole N of formation or S, between the second pole center line 34 of the first pole center line 14 of internal rotor 10 and corresponding external rotor, there is the first angle theta.The external rotor of the present embodiment and internal rotor all adopt the structure of multilayer permanent magnet, and internal rotor and external rotor coaxially arrange, and the internal rotor magnetic pole that the first tooth of stator is relative with the second tooth is identical with external rotor magnetic poles polarity.
Figure 15 has represented the affect schematic diagram of the pole center wire clamp angle of inner and outer Rotator on the pulsation of motor cogging torque, as can be seen from Figure 15, θ ' is the motor cogging torque fluctuation amplitude of motor in the prior art of 0 degree, motor cogging torque fluctuation amplitude is along with pole center line angle theta exists and reduces, in angle theta adjustable extent, exist optimum angle theta 1 to make cogging torque pulsation reach minimum value, optimum angle theta 1 changes with motor slot number cooperation value.The magneto of the technique effect of the magneto of the second embodiment and the first embodiment is basic identical.
The present invention also provides the 3rd embodiment of magneto, specifically referring to shown in Fig. 9 and Figure 10, the magneto of the present embodiment comprises internal rotor 10, stator and external rotor 30, the structure of the magneto of the present embodiment and annexation are basic identical with the magneto of the first embodiment, and difference is only, the inside of internal rotor iron core 11 is provided with a plurality of magnetic flux stop parts 15, a plurality of magnetic flux stop parts 15 are separately positioned in the first magnetic pole groove 13, magnetic flux stop part 15 is every magnetizing mediums, and internal rotor iron core is magnetic conductive media.
Internal rotor 10 has multilayer magnetic flux stop part structure, it is not magnetic conductive media of air or other in magnetic flux stop part, when stator winding electrifying, magnetic field magnetic line mainly flows into or flows out from internal rotor iron core, cause the magnetic flux stop part of internal rotor and the magnetic circuit of internal rotor iron core asymmetric, produce reluctance torque, and with external rotor synchronous rotary; The permanent magnetism body surface of the external rotor 30 of the present embodiment sticks at the inner surface of outer rotor iron core.
Magnetic flux stop part 15 is corresponding with external rotor magnetic poles, between the second pole center line 34 of the center line of magnetic flux stop part 15 and corresponding external rotor magnetic poles, there is the 3rd angle β, as Figure 13 can find out, the pole center line of external rotor is led over the magnetic flux stop part center line of internal rotor in rotor direction, when the pole center line of external rotor forms β angle between the magnetic flux stop part center line of rotor direction and internal rotor, β angle is not 0 can be so that motor obtains larger electromagnetic torque under identical electric current.And as can be seen from Figure 13,, when β is at 40 ° during to 50 ° of angles, the synthetic electromagnetic torque effective value of motor is maximum.
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 modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a magneto, comprising:
Internal rotor (10), comprises internal rotor iron core (11);
Stator (20), around described internal rotor (10) arrange and and described internal rotor (10) between there is gap, described stator (20) is included in the stator winding (24) that circumferencial direction is arranged at intervals with the stator core (21) of a plurality of stator slots (22) and a plurality of tooth (23) and is placed in described stator slot (22);
External rotor (30), described external rotor (30) coaxially arranges with described internal rotor (10) and with identical speed rotating Vortex, described external rotor (30) around described stator (20), arrange and and described stator (20) between there is gap,
It is characterized in that, described internal rotor iron core (11) is provided with a plurality of the first magnetic pole grooves (13) that are set up in parallel along the radial direction of described internal rotor (10).
2. magneto according to claim 1, it is characterized in that, described external rotor (30) comprises outer rotor iron core (31), on the inner surface of described outer rotor iron core (31), be provided with the second permanent magnet (32), the angle between the first pole center line (14) of described internal rotor (10) and the second pole center line (34) of corresponding described external rotor (30) is between 20 ° to 45 °.
3. magneto according to claim 1, it is characterized in that, described external rotor (30) comprises outer rotor iron core (31), described outer rotor iron core (31) inside is provided with along the radial direction of described external rotor (30) multilayer the second magnetic pole groove (33) spaced apart, on described outer rotor iron core (31), be provided with many groups the second magnetic pole unit, described in every group, the second magnetic pole unit comprises the second permanent magnet (32) being separately positioned in described the second magnetic pole groove (33), the axial stack magnetic line of force of a plurality of described the second permanent magnet (32) described in every group in the second magnetic pole unit points to the consistent common magnetic pole N of formation or S, between the first pole center line (14) of described internal rotor (10) and the second pole center line (34) of corresponding described external rotor, there is the first angle (θ).
4. magneto according to claim 1, it is characterized in that, on described internal rotor iron core (11), be provided with many groups the first magnetic pole unit, described in every group, the first magnetic pole unit comprises a plurality of the first permanent magnets (12), a plurality of described the first permanent magnets (12) are separately positioned in different described the first magnetic pole grooves (13), described in every group, the axial stack magnetic line of force of first permanent magnet (12) of the first magnetic pole unit points to the consistent common magnetic pole N of formation or S, and described external rotor (30) is oppositely arranged with identical magnetic pole and described internal rotor (10).
5. magneto according to claim 1, it is characterized in that, described stator core (21) is loop configuration, described stator slot (22) comprises the first groove (221) and the second groove (222), described tooth (23) comprises the first tooth (231) and the second tooth (232), described the first groove (221) and described the first tooth (231) are disposed on the inwall of described stator core (21) along the circumferencial direction of described stator, described the second groove (222) and the second tooth (232) are disposed on the outer wall of described stator core (21) along the circumferencial direction of described stator (20), between the center line of the center line of described the first tooth (231) and corresponding described the second tooth (232) adjacent with the first tooth (231) described in this, there is the second angle (γ).
6. magneto according to claim 5, is characterized in that, described the first groove (221) is 1:2 with the quantity ratio of described the second groove (222).
7. magneto according to claim 1, it is characterized in that, the inside of described internal rotor iron core (11) is provided with a plurality of magnetic flux stop parts (15), a plurality of described magnetic flux stop parts (15) are separately positioned in described the first magnetic pole groove (13), described magnetic flux stop part (15) is every magnetizing mediums, and described internal rotor iron core (11) is magnetic conductive media.
8. magneto according to claim 7, it is characterized in that, described magnetic flux stop part (15) is corresponding with the magnetic pole of described external rotor, between the second pole center line (34) of the center line of described magnetic flux stop part (15) and corresponding described external rotor magnetic poles, has the 3rd angle (β).
9. magneto according to claim 8, is characterized in that, described the 3rd angle (β) is between 40 ° to 50 °.
10. magneto according to claim 5, it is characterized in that, described stator core (21) is comprised of a plurality of stator pieces successively clamping, splicing gap between a plurality of described stator pieces is positioned in the middle of the tooth (23) of described stator, between described first tooth of described stator core (21) both sides and described the second tooth, formed iron core yoke portion, described in each, the described iron core yoke portion place that is positioned at of stator piece winds the line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310016844.0A CN103929026B (en) | 2013-01-16 | 2013-01-16 | Magneto |
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| CN201310016844.0A CN103929026B (en) | 2013-01-16 | 2013-01-16 | Magneto |
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| CN103929026A true CN103929026A (en) | 2014-07-16 |
| CN103929026B CN103929026B (en) | 2016-01-20 |
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Cited By (8)
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| CN106487174A (en) * | 2015-08-31 | 2017-03-08 | 铃木株式会社 | Electric rotating machine |
| CN109742916A (en) * | 2019-02-21 | 2019-05-10 | 郑州大学 | A kind of permanent magnetism list stator and double-rotor disc type electric machine weakening cogging torque |
| CN109861477A (en) * | 2018-09-21 | 2019-06-07 | 沈阳工业大学 | Permanent magnetism/magnetic resistance birotor low speed high torque synchronous motor and its control system |
| CN109904944A (en) * | 2018-06-13 | 2019-06-18 | 苏州保邦电气有限公司 | High speed permanent motor stator punching |
| CN110601481A (en) * | 2019-10-25 | 2019-12-20 | 山东大学 | Birotor permanent magnet synchronous reluctance motor and configuration method |
| CN111030404A (en) * | 2019-12-02 | 2020-04-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor and control method thereof |
| CN112470365A (en) * | 2018-06-07 | 2021-03-09 | 马威动力控制技术有限公司 | Rotor for an electric machine and electric machine comprising said rotor |
| CN113691091A (en) * | 2020-08-28 | 2021-11-23 | 鲲腾泰克有限公司 | Motor and generator apparatus, systems and methods having multiple air gaps |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487174A (en) * | 2015-08-31 | 2017-03-08 | 铃木株式会社 | Electric rotating machine |
| CN112470365A (en) * | 2018-06-07 | 2021-03-09 | 马威动力控制技术有限公司 | Rotor for an electric machine and electric machine comprising said rotor |
| CN109904944A (en) * | 2018-06-13 | 2019-06-18 | 苏州保邦电气有限公司 | High speed permanent motor stator punching |
| CN109861477A (en) * | 2018-09-21 | 2019-06-07 | 沈阳工业大学 | Permanent magnetism/magnetic resistance birotor low speed high torque synchronous motor and its control system |
| CN109861477B (en) * | 2018-09-21 | 2023-12-05 | 沈阳工业大学 | Permanent magnet/reluctance double-rotor low-speed high-torque synchronous motor and control system thereof |
| CN109742916A (en) * | 2019-02-21 | 2019-05-10 | 郑州大学 | A kind of permanent magnetism list stator and double-rotor disc type electric machine weakening cogging torque |
| CN110601481A (en) * | 2019-10-25 | 2019-12-20 | 山东大学 | Birotor permanent magnet synchronous reluctance motor and configuration method |
| CN111030404A (en) * | 2019-12-02 | 2020-04-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor and control method thereof |
| CN111030404B (en) * | 2019-12-02 | 2022-03-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor and control method thereof |
| CN113691091A (en) * | 2020-08-28 | 2021-11-23 | 鲲腾泰克有限公司 | Motor and generator apparatus, systems and methods having multiple air gaps |
| CN113691091B (en) * | 2020-08-28 | 2024-05-14 | 鲲腾泰克(成都)科技有限公司 | Motor and generator apparatus, systems, and methods having multiple air gaps |
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| CN103929026B (en) | 2016-01-20 |
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