CN105553196A - Method for allowing air-gap field to approach sinusoidal waveform of outer rotor by using multiple pieces of permanent magnets - Google Patents
Method for allowing air-gap field to approach sinusoidal waveform of outer rotor by using multiple pieces of permanent magnets Download PDFInfo
- Publication number
- CN105553196A CN105553196A CN201511008136.8A CN201511008136A CN105553196A CN 105553196 A CN105553196 A CN 105553196A CN 201511008136 A CN201511008136 A CN 201511008136A CN 105553196 A CN105553196 A CN 105553196A
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- China
- Prior art keywords
- outer rotor
- permanent magnetism
- magnetism sheet
- iron core
- tiles
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
- H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a method for allowing an air-gap field to approach a sinusoidal waveform of an outer rotor by using multiple pieces of permanent magnets, belonging to the technical field of the outer rotor of a synchronous permanent-magnet motor. The method comprises the following steps of (a) carrying out parallel magnetizing on each piece in even numbers of tile-shaped permanent magnet pieces to form an S pole and an N pole; (b) embedding the tile-shaped permanent magnet pieces into radially-partitioned slots of an outer rotor iron core one by one, wherein adjacent tile-shaped permanent magnet pieces are installed in polarity opposite way, the outer rotor iron core is provided with a round outer side surface, even numbers of radial and inward inner convex parts and limitation straight teeth are uniformly arranged in the outer rotor iron core, the radially-partitioned slot is connected between each limitation straight tooth and adjacent inner convex parts in a transition way, and the quantities of the inner convex parts, the limitation straight teeth and the tile-shaped permanent magnet pieces are the same; and (c) placing an inner support in an inner hole of the outer rotor iron core to allow each tile-shaped permanent magnet piece to prop against the inner support and allow a concave curved surface of each tile-shaped permanent magnet piece to be in contact with an inner convex curved surface of each inner convex part. With the method, the air-gap field inside the outer rotor approaches the sinusoidal waveform, and the loss brought by the action of a harmonic magnetic field can be reduced.
Description
[technical field]
The present invention relates to a kind of sine-shaped method of air-gap field convergence that multi-disc permanent magnet realizes external rotor, belong to the external rotor technical field of permagnetic synchronous motor.
[background technology]
External rotor permanent magnet synchronous machine has that structure is simple, volume is little, operational efficiency is high, power factor is high, power density is large, low speed Driving Torque is large, safeguard the advantages such as simple, in the field of household appliances such as Heating,Ventilating and Air Conditioning (HVAC), washing machine and all in an increasingly wide range of applications in automobile, automatic field.
Magnet steel adopts its internal air gap magnetic field, in general of external rotor of Surface Mount mode all can only form trapezoidal waveform, and including the properties of a lot of harmonic wave to motor in magnetic field has adverse influence.
Whether reasonable in design the air-gap field of external rotor is, and the design of the permanent magnetism magnetic pole matched with rotor core will directly determine the performance of external rotor permanent magnet synchronous machine, is the key point of external rotor permanent magnet synchronous machine design success or failure.
[summary of the invention]
The object of this invention is to provide a kind of sine-shaped method of air-gap field convergence that multi-disc permanent magnet realizes external rotor, it can reduce the unfavorable loss that harmonic field effect brings.
Realize the sine-shaped method of air-gap field convergence of external rotor with multi-disc permanent magnet, the method realizes as follows:
A, permanent magnet adopt even number sheet tiles permanent magnetism sheet, and every sheet tiles permanent magnetism sheet forms S pole and N totally two poles extremely by parallel magnetic mode of rushing.
B, tiles permanent magnetism sheet to be intercalated in the radial separations slot of outer rotor iron core one by one, adjacent tiles permanent magnetism sheet is installed with polarity opposite way, wherein,
The lateral surface of this outer rotor iron core is circular, and the inner homogeneous of outer rotor iron core be distributed with even number radially inner internal projection portion and the radially inner spacing straight-tooth of even number, and transition is connected with and separates slot for tiles permanent magnetism sheet intercalation warp-wise wherein between each spacing straight-tooth and adjacent internal projection portion, the quantity of internal projection portion, spacing straight-tooth and tiles permanent magnetism sheet is equal.
C, inner support is placed into outer rotor iron core endoporus in for fixing tiles permanent magnetism sheet, guarantee that each tiles permanent magnetism sheet is all conflicted with inner support, and the concave curved surface of each tiles permanent magnetism sheet is all affixed with the interior convex surface in corresponding internal projection portion.
The thickness of each tiles permanent magnetism sheet in above-mentioned steps a is even.
The thickness that warp-wise in above-mentioned steps b separates the width of slot and above-mentioned tiles permanent magnetism sheet is suitable.
Each spacing straight-tooth in above-mentioned steps b is wide tooth.
Inner support in above-mentioned steps c is the inner support of non-magnetic.
Compared with prior art, tool of the present invention has the following advantages and beneficial effect:
Outer rotor iron core is designed with radially inner internal projection portion in a creative way, radially inner spacing straight-tooth and confession tiles permanent magnetism sheet intercalation warp-wise wherein separate slot, outer rotor iron core and tiles permanent magnetism sheet matching design reasonable, during installation, the concave curved surface of every sheet tiles permanent magnetism sheet is all relative with the circular outside face of outer rotor iron core, the combination of even number sheet tiles permanent magnetism sheet is in circumference distribution, its internal air gap magnetic field of external rotor that application the inventive method manufactures and designs permagnetic synchronous motor levels off to sinusoidal waveform, overcome the deficiency that prior art air-gap field is nonsinusoidal waveform distribution, the unfavorable loss that harmonic field effect brings can be reduced, be of value to the performance improving external rotor permanent magnet synchronous machine, reduce the vibration & noise of external rotor permanent magnet synchronous machine, improve external rotor permanent magnet synchronous machine operation stability and reliability, and effectively reduce the cost of external rotor permanent magnet synchronous machine.
In addition, use the tiles permanent magnetism sheet of the inventive method manufacture needed for external rotor, it parallelly need only rush magnetic technique and can obtain, choose corresponding low cost rush magnetic machine according to low magnetic technological requirement of rushing, be conducive to the equipment investment reducing motor manufacturing factory, can indirectly reduce production cost.
[accompanying drawing explanation]
Fig. 1 is the outer-rotor structure schematic diagram of the permagnetic synchronous motor with the ends of the earth;
Fig. 2 is the external rotor stereogram of the permagnetic synchronous motor with the ends of the earth;
Fig. 3 is the inner support structural representation in Fig. 1;
Fig. 4 is the inner support stereogram in Fig. 2;
Fig. 5 is the outer rotor iron core stereogram in Fig. 2;
Fig. 6 schematically shows the external rotor air-gap field distribution map of the permagnetic synchronous motor of the ends of the earth;
Fig. 7 is the external rotor air-gap field oscillogram of the permagnetic synchronous motor with the ends of the earth.
Number in the figure illustrates:
1-outer rotor iron core, 10-radial separations slot, 100-endoporus, 11-internal projection portion, convex surface in 110-, the spacing straight-tooth of 12-;
2-tiles permanent magnetism sheet, 20-concave curved surface;
3-inner support.
[embodiment]
Referring to shown in Fig. 1,2,3,4,5, is preferred embodiment of the present invention.
Realize the sine-shaped method of air-gap field convergence of external rotor with multi-disc permanent magnet, it realizes as follows:
A, permanent magnet adopt even number sheet tiles permanent magnetism sheet 2, and every sheet tiles permanent magnetism sheet 2 forms S pole and N totally two poles extremely by parallel magnetic mode of rushing;
B, tiles permanent magnetism sheet 2 to be intercalated in the radial separations slot 10 of outer rotor iron core 1 one by one, adjacent tiles permanent magnetism sheet 2 is installed with polarity opposite way, wherein,
The lateral surface of this outer rotor iron core 1 is circular, and the inner homogeneous of outer rotor iron core 1 be distributed with even number radially inner internal projection portion 11 and the radially inner spacing straight-tooth 12 of even number, and transition is connected with and separates slot 10 for tiles permanent magnetism sheet 2 intercalation warp-wise wherein between each spacing straight-tooth 12 and adjacent internal projection portion 11, the quantity of internal projection portion 11, spacing straight-tooth 12 and this three of tiles permanent magnetism sheet 2 is equal;
C, inner support 3 is placed into outer rotor iron core 1 endoporus 100 in for fixing tiles permanent magnetism sheet 2, guarantee that each tiles permanent magnetism sheet 2 is all conflicted with inner support 3, and the concave curved surface 20 of each tiles permanent magnetism sheet 2 is all affixed with the interior convex surface 110 in corresponding internal projection portion 11.
The thickness of each tiles permanent magnetism sheet 2 in above-mentioned steps a is even.
The thickness that warp-wise in above-mentioned steps b separates the width of slot 10 and above-mentioned tiles permanent magnetism sheet 2 is suitable.
Each spacing straight-tooth 12 in above-mentioned steps b is wide teeth.
Inner support 3 in above-mentioned steps c is the inner support of non-magnetic.
Outer rotor iron core 1 is formed by connecting by certainly withholding by the external rotor punching that multi-disc is stacking.
As shown in Figure 5, in the present embodiment, the quantity in internal projection portion 11 is eight; The quantity of spacing straight-tooth 12 is eight; The quantity of radial separations slot 10 is 16; The quantity of tiles permanent magnetism sheet 2 is eight (see Fig. 1,2).
Because adjacent tiles permanent magnetism sheet 2 is installed on the contrary with polarity, therefore eight tiles permanent magnetism sheets 2 are along the circumferential direction alternately distributed with S pole and N pole.
Ask for an interview shown in Fig. 1,2, because the concave curved surface 20 of every sheet tiles permanent magnetism sheet 2 is all relative with the circular outside face of outer rotor iron core 1, the combination of eight tiles permanent magnetism sheets 2 is in circumference distribution, and outer rotor iron core 1, tiles permanent magnetism sheet 2 and inner support 3 form an air-gap field (as Fig. 6); Please as shown in Figure 7, have the external rotor of the interior inserted permagnetic synchronous motor of the ends of the earth, its internal air gap field waveform realizes convergence Sine distribution.
Claims (5)
1. realize the sine-shaped method of air-gap field convergence of external rotor with multi-disc permanent magnet, it is characterized in that the method realizes as follows:
A, Design of Permanent Magnet tile shape permanent magnetism sheet, quantity is even number sheet, and every sheet tiles permanent magnetism sheet forms S pole and N totally two poles extremely by parallel magnetic mode of rushing;
B, tiles permanent magnetism sheet to be intercalated in the radial separations slot of outer rotor iron core one by one, adjacent tiles permanent magnetism sheet is installed with polarity opposite way, wherein,
The lateral surface of this outer rotor iron core is circular, and the inner homogeneous of outer rotor iron core be distributed with even number radially inner internal projection portion and the radially inner spacing straight-tooth of even number, and transition is connected with and separates slot for tiles permanent magnetism sheet intercalation warp-wise wherein between each spacing straight-tooth and adjacent internal projection portion, the quantity of internal projection portion, spacing straight-tooth and tiles permanent magnetism sheet is equal;
C, inner support is placed into outer rotor iron core endoporus in for fixing tiles permanent magnetism sheet, guarantee that each tiles permanent magnetism sheet is all conflicted with inner support, and the concave curved surface of each tiles permanent magnetism sheet is all affixed with the interior convex surface in corresponding internal projection portion.
2. the sine-shaped method of air-gap field convergence according to claim 1, is characterized in that: the thickness of each tiles permanent magnetism sheet in described step a is even.
3. the sine-shaped method of air-gap field convergence according to claim 2, is characterized in that: the thickness that warp-wise in described step b separates the width of slot and described tiles permanent magnetism sheet is suitable.
4. the sine-shaped method of air-gap field convergence according to claim 2, is characterized in that each spacing straight-tooth in step b is wide tooth.
5. the sine-shaped method of air-gap field convergence according to claim 1, is characterized in that: the inner support in described step c is the inner support of non-magnetic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511008136.8A CN105553196B (en) | 2015-12-24 | 2015-12-24 | The method that the air-gap field convergence sinusoidal waveform of outer rotor is realized with multi-disc permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511008136.8A CN105553196B (en) | 2015-12-24 | 2015-12-24 | The method that the air-gap field convergence sinusoidal waveform of outer rotor is realized with multi-disc permanent magnet |
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| Publication Number | Publication Date |
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| CN105553196A true CN105553196A (en) | 2016-05-04 |
| CN105553196B CN105553196B (en) | 2018-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201511008136.8A Active CN105553196B (en) | 2015-12-24 | 2015-12-24 | The method that the air-gap field convergence sinusoidal waveform of outer rotor is realized with multi-disc permanent magnet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154692A (en) * | 2017-06-16 | 2017-09-12 | 浙江迪贝电气股份有限公司 | A kind of permanent-magnet ferrite rotor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200962543Y (en) * | 2006-10-16 | 2007-10-17 | 广东威灵电机制造有限公司 | A permanent magnetic rotor for the electromotor |
| CN201134707Y (en) * | 2007-12-24 | 2008-10-15 | 珠海格力电器股份有限公司 | Permanent magnet rotor for motor |
| CN100533917C (en) * | 2002-06-20 | 2009-08-26 | 株式会社东芝 | Rotor for permanent magnet motor of outer rotor type |
| CN202178626U (en) * | 2011-08-02 | 2012-03-28 | 佛山市威灵洗涤电机制造有限公司 | Rotor magnetic steel for permanent magnet synchronous motor |
-
2015
- 2015-12-24 CN CN201511008136.8A patent/CN105553196B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100533917C (en) * | 2002-06-20 | 2009-08-26 | 株式会社东芝 | Rotor for permanent magnet motor of outer rotor type |
| CN200962543Y (en) * | 2006-10-16 | 2007-10-17 | 广东威灵电机制造有限公司 | A permanent magnetic rotor for the electromotor |
| CN201134707Y (en) * | 2007-12-24 | 2008-10-15 | 珠海格力电器股份有限公司 | Permanent magnet rotor for motor |
| CN202178626U (en) * | 2011-08-02 | 2012-03-28 | 佛山市威灵洗涤电机制造有限公司 | Rotor magnetic steel for permanent magnet synchronous motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154692A (en) * | 2017-06-16 | 2017-09-12 | 浙江迪贝电气股份有限公司 | A kind of permanent-magnet ferrite rotor |
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| CN105553196B (en) | 2018-04-06 |
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Effective date of registration: 20221104 Address after: 312400 No. 1, Yunxia Road, Sanjiang street, Shengzhou City, Zhejiang Province Patentee after: Zhejiang Dibei Zhikong Technology Co.,Ltd. Address before: 333000 Room 604, Unit 2, Building 29, Shidai Aoyuan Community, No. 46, Changnan Avenue, Changjiang District, Jingdezhen, Jiangxi Province Patentee before: Lai Jiashun Patentee before: Xing Yiye |
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