CN102185447B - Novel inner rotor permanent magnet motor - Google Patents

Novel inner rotor permanent magnet motor Download PDF

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Publication number
CN102185447B
CN102185447B CN 201110118221 CN201110118221A CN102185447B CN 102185447 B CN102185447 B CN 102185447B CN 201110118221 CN201110118221 CN 201110118221 CN 201110118221 A CN201110118221 A CN 201110118221A CN 102185447 B CN102185447 B CN 102185447B
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China
Prior art keywords
motor
inner rotor
stator
permanent magnet
vat
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CN 201110118221
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Chinese (zh)
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CN102185447A (en
Inventor
夏传富
林敏萍
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FANS-TECH ELECTRIC CO., LTD.
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FOSHAN SHUNDE FANS-TECH ELECTRIC Co Ltd
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Priority to CN 201110118221 priority Critical patent/CN102185447B/en
Priority to PCT/CN2011/079419 priority patent/WO2012151817A1/en
Publication of CN102185447A publication Critical patent/CN102185447A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/14Stator cores with salient poles
    • H02K1/146Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K21/00Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K21/16Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

The invention belongs to the technical field of motors, and in particular relates to a novel inner rotor permanent magnet motor with permanent magnet. The inner rotor permanent magnet motor comprises a stator assembly and a shaft type inner rotor inside the inner rotor, wherein the rotor assembly comprises a stator iron core and a stator coil which is wound on the stator iron core; the stator iron core is of a big and small slot structure which comprises big slots and small slots; the number of the small slots is equal to the number of the big slots; the small slots are correspondingly distributed on the top of the each tooth of the stator iron core; the ratio of the number of the big slots to the number of poles of the rotor is in a fractional slot design; the ratio of the number of the big slots to the number of poles of the rotor meets the following formula: the ratio is equal to (2p+/-1)/3: 2p, wherein p represents pole pairs of the motor; and the total number of the stator iron core is (2p+/-1)/3*2. On the basis of keeping higher processing property, slot insulation materials of the inner rotor permanent magnet motor are reduced, the winding coefficients are high, the harmonic content is small and the efficient running of the motor can be ensured. The inner rotor permanent magnet motor can be widely applied to an axial flow fan and other electrical equipment, thus ensuring preferable usability of the axial flow fan and the other electrical equipment.

Description

A kind of novel permanent magnetic inner rotor motor
Technical field
The invention belongs to the motor product technical field.A kind of novel permanent magnetic internal rotor synchronous machine is specifically disclosed.
Background technology
Existing permanent magnetism inner rotor motor great majority are for concentrating winding configuration, and as shown in Figure 1, the permanent magnetism inner rotor motor comprises stator 2 and rotor 1; The ratio of the groove number of said stator 2 and the paired permanent magnet number of poles of rotor 1 is 3: 2; For example, for typical 8 utmost point motors, stator 2 is the structure of 12 stator slots.
When motor operated in below 1000 rev/mins, electric efficiency was starkly lower than the efficient of motor when being higher than 1000 rev/mins, and the frequency of motor operation has only tens hertz.
For example, when inner rotor motor is applied to axial flow blower, exist the unfavorable problem of efficient in the application; And the main cause of this problem is that the motor running frequency is lower, has only tens hertz, and between the desirable running frequency 150-250 of the general permagnetic synchronous motor hertz; But because motor speed can not change, can only increase the paired permanent magnet number of poles of rotor, at the 1000 right rotating speeds that turn left; The number of poles of motor is greater than 20 utmost points; Groove number by the traditional design method motor stator also must increase to more than 20 grooves, makes that like this motor integrated artistic property is relatively poor, and its winding coefficient is low.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of novel permanent magnetic inner rotor motor is provided, this inner rotor motor is on the basis of keeping higher processing performance, and the slot liner material of motor reduces, and winding coefficient is high, guarantees the motor high-efficiency operation.
In order to realize above-mentioned technical purpose, the present invention realizes by following technical scheme:
A kind of novel permanent magnetic inner rotor motor of the present invention; Comprise stator module and place inner shaft type internal rotor, said stator module comprises stator core and is set around the stator coil on the stator core that said stator core is big sulculus structure; This big sulculus structure comprises vat and sulculus; The groove number of said sulculus is identical with the groove number of vat, and said sulculus is distributed in the top of each tooth of stator core accordingly, and the groove number of said vat is the mark slot type design of mark with the ratio of the number of poles of rotor; The ratio of said vat groove number and rotor number of poles satisfies following formula: (2p ± 1)/3: 2p; Wherein p is the motor number of pole-pairs, and motor stator backward influence of magnetic field has been subdued in the setting of this sulculus widely, makes the every extremely every phase groove of motor count q=(2p ± 1)/6p=1/3 ± 1/6p.When p=13 (26 utmost point), q=26/27, harmonic constant are extremely low. In addition, total groove number of said stator core is (2p ± 1)/3*2.
As the further improvement of above-mentioned technology, the number of said vat is 3 odd, and each vat flute profile is consistent, and becomes equidistant even distribution.
In the present invention, said sulculus is an arc groove, and its radian is approximately equal to 360/ (2p ± 1), and p is the motor number of pole-pairs.
Compared with prior art, the invention has the beneficial effects as follows:
(1) in the invention: said stator core is the mark slot type design of mark for the ratio of the groove number of the vat of this stator core and rotor number of poles, and the ratio of said vat and rotor number of poles satisfies ((2p ± 1)/3): 2p, and wherein p is the motor number of pole-pairs; Motor can be realized the fit system of multipole few groove; Like this, guaranteeing to keep on the basis that has higher processing performance now, the slot liner material of motor reduces; Winding coefficient is high, guarantees the motor high-efficiency operation.
(2) the top correspondence of each tooth of stator core is provided with a sulculus among the present invention, has subdued motor stator backward influence of magnetic field widely, makes the every extremely every phase groove of motor count q=(2p ± 1)/6p=1/3 ± 1/6p.When p=13 (26 utmost point), q=26/27, harmonic constant are extremely low.
Description of drawings
Below in conjunction with accompanying drawing and specific embodiment the present invention is done detailed explanation:
Fig. 1 is a permanent magnetism inner rotor motor structural representation in the prior art;
Fig. 2 is a permanent magnetism inner rotor motor structural representation among the present invention;
Fig. 3 is a permanent magnetism inner rotor motor perspective view among the present invention.
Embodiment
Like Fig. 2, shown in Figure 3; Permanent magnetism inner rotor motor of the present invention; Comprise stator module and place inner shaft type internal rotor 1; Said stator module comprises stator core 2 and is set around the stator coil 3 on the stator core 2 that the groove number of the vat 21 that said stator core 2 is this stator core is the mark slot type design of mark with the ratio of the paired permanent magnet number of poles of rotor 1, satisfied ((2p ± 1)/3): the 2p of the ratio of the number of poles of said vat 21 and rotor 1; Wherein p is the motor number of pole-pairs; The top correspondence of said stator core 2 each tooth is provided with a sulculus 4, and this sulculus 4 has been subdued motor stator backward influence of magnetic field widely, makes the every extremely every phase groove of motor count q=(2p ± 1)/6p=1/3 ± 1/6p.When p=13 (26 utmost point), q=26/27, harmonic constant are extremely low.
In the present invention, said vat 21 is 3 odd, and each vat 21 flute profile is consistent, and equidistant even distribution.In addition, the sulculus 22 of stator core 2 each tooth is an arc groove, and its radian is approximately equal to 360/ (2p ± 1)
Among the present invention, the groove number of vat 21 is 3: 8 with the ratio of motor pole number, 3: 10; 9: 26,9: 28; 15: 44; 15: 46 ..., wherein the groove number of vat 21 is odd of 3,3,9,15,21....., and motor pole number is: 3 times of vat number ± 1, motor pole number must be even numbers.
Shown in Figure 2 is exactly one is the motor of 26 utmost points, 9 grooves, and motor can realize that multipole few groove cooperates, and the slot liner material of motor reduces, and winding coefficient is high; In addition, have sulculus 22 in the middle of each stator core 2 each tooth, subdued motor stator backward influence of magnetic field widely, make the every extremely every phase groove of motor count q=(2p ± 1)/6p=1/3 ± 1/6p.When p=13 (26 utmost point), q=26/27, harmonic constant are extremely low.When inner rotor motor of the present invention is applied to axial fan, between its running frequency 150-250 hertz, effectively guarantee the motor high-efficiency operation.
The present invention is not limited to above-mentioned execution mode; Every various changes of the present invention or modification are not broken away from the spirit and scope of the present invention; If these are changed and modification belongs within claim of the present invention and the equivalent technologies model, then the present invention also means and comprises these changes and modification.

Claims (3)

1. novel permanent magnetic inner rotor motor; Comprise stator module and place inner shaft type internal rotor, said stator module comprises stator core and is set around the stator coil on the stator core that it is characterized in that: said stator core is big sulculus structure; This big sulculus structure comprises vat and sulculus; The groove number of said sulculus is identical with the groove number of vat, and said sulculus is distributed in the top of each tooth of stator core accordingly, and the groove number of said vat is the mark slot type design of mark with the ratio of the number of poles of rotor; The ratio of said vat groove number and rotor number of poles satisfies following formula: (2p ± 1)/3: 2p, and wherein p is the motor number of pole-pairs;
Total groove number of said stator core is (2p ± 1)/3*2.
2. novel permanent magnetic inner rotor motor according to claim 1 is characterized in that: the number of said vat is 3 odd, and each vat flute profile is consistent, and becomes equidistant even distribution.
3. novel permanent magnetic inner rotor motor according to claim 1 and 2 is characterized in that: said sulculus is an arc groove, and its radian is approximately equal to 360/ (2p ± 1), and p is the motor number of pole-pairs.
CN 201110118221 2011-05-09 2011-05-09 Novel inner rotor permanent magnet motor Active CN102185447B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN 201110118221 CN102185447B (en) 2011-05-09 2011-05-09 Novel inner rotor permanent magnet motor
PCT/CN2011/079419 WO2012151817A1 (en) 2011-05-09 2011-09-07 Permanent-magnet internal rotor motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110118221 CN102185447B (en) 2011-05-09 2011-05-09 Novel inner rotor permanent magnet motor

Publications (2)

Publication Number Publication Date
CN102185447A CN102185447A (en) 2011-09-14
CN102185447B true CN102185447B (en) 2012-11-21

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WO (1) WO2012151817A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2611295A (en) * 2020-10-19 2023-04-05 Univ Jiangsu Fractional slot concentrated winding permanent magnet motor-based duplex-winding low-harmonic design method
CN112366912B (en) * 2020-10-19 2021-09-10 江苏大学 Double-winding low-harmonic design method based on fractional-slot concentrated winding permanent magnet motor
KR20240056276A (en) 2022-10-21 2024-04-30 국립순천대학교산학협력단 Titanium alloy and manufacturing method for same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101588113A (en) * 2008-12-30 2009-11-25 湖州太平微特电机有限公司 Preparation method of a permanent magnetic brushless servomotor with low alveolar torque and a motor
CN101677197A (en) * 2008-09-16 2010-03-24 阿斯莫株式会社 brushless motor
CN201690336U (en) * 2010-04-01 2010-12-29 名泰机械制造有限公司 Wheel hub direct-current motor structure
KR20110009876A (en) * 2009-07-23 2011-01-31 삼성전기주식회사 Stator and motor having the same
CN202026171U (en) * 2011-05-09 2011-11-02 佛山市顺德区泛仕达机电有限公司 Novel permanent magnet inner rotor motor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19530918A1 (en) * 1995-08-23 1997-02-27 Philips Patentverwaltung Motor with motor parts that can be moved against each other
CN101667770B (en) * 2008-09-03 2013-09-04 德昌电机(深圳)有限公司 Fuel pump and brushless DC motor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101677197A (en) * 2008-09-16 2010-03-24 阿斯莫株式会社 brushless motor
CN101588113A (en) * 2008-12-30 2009-11-25 湖州太平微特电机有限公司 Preparation method of a permanent magnetic brushless servomotor with low alveolar torque and a motor
KR20110009876A (en) * 2009-07-23 2011-01-31 삼성전기주식회사 Stator and motor having the same
CN201690336U (en) * 2010-04-01 2010-12-29 名泰机械制造有限公司 Wheel hub direct-current motor structure
CN202026171U (en) * 2011-05-09 2011-11-02 佛山市顺德区泛仕达机电有限公司 Novel permanent magnet inner rotor motor

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CN102185447A (en) 2011-09-14

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Owner name: GUANGDONG FANS-TECH ELECTRIC CO., LTD.

Free format text: FORMER NAME: FANSHIDA ELECTROMECHANICAL CO., LTD.;SHUNDE ZONE;FOSHAN CITY

CP03 Change of name, title or address

Address after: 528300 Guangdong, Foshan, Shunde District, Daliang street, Sha Shun Road, No. five, No. 9, No. two

Patentee after: FANS-TECH ELECTRIC CO., LTD.

Address before: 528300 9, Daliang Road, Shunde District, Guangdong City, Foshan Province five

Patentee before: Foshan Shunde Fans-Tech Electric Co., Ltd.