CN104917350A - Asynchronous starting permanent magnet motor rotor - Google Patents
Asynchronous starting permanent magnet motor rotor Download PDFInfo
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- CN104917350A CN104917350A CN201410744593.2A CN201410744593A CN104917350A CN 104917350 A CN104917350 A CN 104917350A CN 201410744593 A CN201410744593 A CN 201410744593A CN 104917350 A CN104917350 A CN 104917350A
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- rotor
- permanent magnet
- motor
- grooves
- isolation tank
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- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention relates to an asynchronous starting permanent magnet motor rotor. The rotor comprises a rotating shaft, a rotor iron core, permanent magnet grooves, permanent magnets and rotor grooves. The permanent magnet grooves, whose number is an integral multiple of a motor pole number, are distributed on the rotor iron core taking the rotating shaft as a center. A type of the permanent magnet is installed in each permanent magnet groove so as to form a magnetic pole of the motor together. The rotor grooves which are arranged symmetrically are uniformly distributed between the permanent magnet grooves and an external diameter of a rotor. Conducting bars pass through the rotor grooves and are connected to end rings of two axial ends so as to form a mouse cage structure. Two sides of the rotor grooves located between poles are provided with magnetism isolating grooves which are distributed symmetrically. By using the rotor of the invention, a magnetism isolating capability is increased; under the condition that a same effective magnetic flux is emitted, motor cost can be effectively reduced; simultaneously a leakage flux is reduced so that performance of a permanent magnet motor is increased; a leakage flux factor of the motor can be adjusted in a considerable scope along with changes of shapes and sizes of the magnetism isolating grooves; an adjustable scope of the leakage flux factor is expanded and an optimization design level of the motor is increased.
Description
Technical field
The present invention relates to the permagnetic synchronous motor of asynchronous starting, particularly relate to optimal design and limit Design high-performance permanent magnet motor, magneto cost can be reduced simultaneously.
Background technology
It is high that permanent magnet synchronous motor has power density, and torque is large, the advantages such as power factor is high, energy-efficient.
Due to the application of permanent magnetic material, magneto is made to be provided with above-mentioned advantage.And permanent magnetic material price is higher, it is the main cause that magneto cost is high.In addition, the application of permanent magnetic material, have also been changed the processing technology of traditional electrical excitation electromotor, too increases the manufacturing cost of magneto.Cost is high, and price height is a unfavorable factor of magneto industrialization.
Along with the development of technology, also higher requirement is constantly proposed to magneto performance, often need optimal design and limit Design.Only optimize key dimension, the motor number of turn and permanent magnet consumption have been difficult to meet design requirement, and traditional rotor structure magnetic leakage factor is relatively fixing, do not have the space optimized, limit the further lifting of magneto performance and the optimization of performance cost.
Summary of the invention
The object of this invention is to provide a kind of magnet isolation tank structure.When not increasing processing cost, increase the adjustable extent of magneto magnetic leakage factor, what realize leakage field can optimization, reaches the higher levels of limit Design of magneto and optimal design.And then realize the raising by a larger margin of magneto performance and reduce material cost and whole motor cost, realize the optimized design of performance cost.
Technical problem solved by the invention can realize by the following technical solutions:
The present invention includes rotating shaft (3), rotor core, permanent magnet trough (2), permanent magnet, rotor (1); In rotor core, centered by rotating shaft (3), distribution becomes the permanent magnet trough (2) of integral multiple with motor pole number; The type permanent magnet installing respective numbers in each permanent magnet trough (2) forms the magnetic pole of a motor jointly; Between permanent magnet trough (2) and rotor diameter, be uniformly distributed the rotor (1) of the symmetry of some, sliver, through rotor (1), is connected to form cage-shaped structure with the end ring at axial two ends; Rotor (1) both sides being positioned at interpolar arrange symmetrical magnet isolation tank (4).
The shape of described magnet isolation tank (4) is rectangle, trapezoidal or rhombus; The size of magnet isolation tank is less than open ended position between adjacent rotor groove (1), between permanent magnet trough (2) and rotor diameter.
Described magnet isolation tank (4) is applied on the rotor of 2,4,6,8 poles.
In rotor core of the present invention, centered by rotating shaft, distribution becomes the permanent magnet trough of integral multiple with motor pole number; " one " type permanent magnet installing respective numbers in each permanent magnet trough forms the magnetic pole of a motor jointly; Between permanent magnet trough and rotor diameter, be uniformly distributed the rotor of the symmetry of some, sliver, through rotor, is connected to form cage-shaped structure with the end ring at axial two ends; The rotor both sides being positioned at interpolar arrange symmetrical magnet isolation tank, and the quantity of magnet isolation tank, shape, size can be selected as the case may be.
In the present invention, rotor structure is with the rotor structure difference usually adopted, and except rotor, interpolar is also dispersed with the magnet isolation tank of some.
The advantage of this structure
1, improve every magnetic energy power, sending in identical useful flux situation, permanent magnet consumption can be reduced than the rotor structure usually adopted, effectively can reduce motor cost like this.The reduction of leakage field, can promote the overload capacity of magneto simultaneously, improves power factor, makes the performance of magneto have also been obtained raising.
2, this kind of structure can not only improve every magnetic energy power, along with the change of magnet isolation tank shape and size, the magnetic leakage factor of motor can be made to be adjusted in suitable scope.Compared with the rotor structure usually adopted, the adjustable extent of magnetic leakage factor expands a lot, and the optimal design level of motor is highly improved.
Although 3 such a construction increases line-start permanent magnetic synchronous motor optimal design level, improve motor performance, reduce cost.But do not increase on material and processing cost, magnet isolation tank together can complete in sheet punching press process with rotor.
Accompanying drawing explanation
Fig. 1,2 is the rotor structure schematic diagram usually adopted.
Fig. 3, the 4 rotor structure schematic diagrames adopted for practical example.
Fig. 5 is the rotor structure magnetic line of force distribution map usually adopted.
Fig. 6 is the rotor structure magnetic line of force distribution map that practical example adopts.
Fig. 7 is the close distribution map of rotor structure magnetic usually adopted.
Fig. 8 is the close distribution map of rotor structure magnetic that practical example adopts.
1 be rotor, 2 be permanent magnet trough in figure, 3 be rotating shaft, 4 be magnet isolation tank, 5 for every magnetic bridge.
Embodiment
The present invention includes rotating shaft 3, rotor core, permanent magnet trough 2, permanent magnet, rotor 1; In rotor core, centered by rotating shaft 3, distribution becomes the permanent magnet trough 2 of integral multiple with motor pole number; The type permanent magnet installing respective numbers in each permanent magnet trough 2 forms the magnetic pole of a motor jointly; Between permanent magnet trough 2 and rotor diameter, be uniformly distributed the rotor 1 of the symmetry of some, sliver, through rotor 1, is connected to form cage-shaped structure with the end ring at axial two ends; Rotor 1 both sides being positioned at interpolar arrange symmetrical magnet isolation tank 4.
The shape of described magnet isolation tank 4 is rectangle, trapezoidal or rhombus; The size of magnet isolation tank is less than open ended position between adjacent rotor groove 1, between permanent magnet trough 2 and rotor diameter.
Described magnet isolation tank 4 is applied on the rotor of 2,4,6,8 poles.
Below in conjunction with concrete diagram, set forth the present invention further.
The rotor structure of usual employing, as Fig. 1,2, there are two places every magnetic bridge 5, because design needs the width at rotor 1 end relatively fixing, generally little every magnetic bridge 5 length, the restriction of technique and punching mechanical strength is also subject to processing every magnetic bridge 5 width, adjustment space is little, therefore the rotor structure magnetic leakage factor adjustable extent usually adopted is little, and leakage field is comparatively large, is unfavorable for the lifting of motor performance and the reduction of cost.
As Fig. 3,4: compared with common structure, four symmetrical magnet isolation tanks 4 are uniformly distributed in interpolar rotor 1 both sides.This structure, enhances every magnetic property, finds out from Fig. 5 and Fig. 6, and the rotor structure interelectrode magnetic leakage magnetic line of force usually adopted is more, and after the rotor structure adopting practical example to adopt, the interelectrode magnetic leakage magnetic line of force obviously reduces; From Fig. 7 and Fig. 8, bottom the rotor structure interpolar rotor 1 usually adopted and magnetic field, both sides is saturated not, and magnetic resistance is little, and leakage flux is easily passed through; And adopt rotor structure of the present invention, after increasing magnet isolation tank 4, obviously increase bottom interpolar rotor 1 with magnetic field, both sides degree of saturation, magnetic resistance increases, and leakage field is not easy to pass through, and strengthens every magnetic energy power.The quantity of magnet isolation tank 4 is 2 times of motor permanent magnet quantity; The shape of magnet isolation tank 4 can according to Motor Optimizing Design need be designed to the various shapes such as rectangle, trapezoidal, rhombus; The size of magnet isolation tank 4 also can design according to the needs of Motor Optimizing Design, but should be less than open ended position between adjacent rotor groove 1, between permanent magnet trough 2 and rotor diameter.This practical example is than the rotor structure usually adopted, and permanent magnet consumption can save more than 4%, aspect of performance, and overload capacity improves 25.6%, and efficiency improves 0.5 percentage point, and power factor improves 0.128.Meanwhile, this structure in force, compared with common structure, does not increase material and processing cost.
In sum, the present invention improves asynchronous starting permanent magnet synchronous motor optimal design level, improves the performance of motor, reduces material cost, and processing cost does not increase.The market competitiveness of further lifting asynchronous starting permanent magnet synchronous motor.
This example is only be described for 2 pole rotor structures, and not to the present invention's restriction, technology of the present invention also can be applied on the rotor of 4,6,8 poles or other numbers of poles, and these changes and improvements fall into the scope of protection of the invention equally.
Claims (3)
1. an asynchronous starting and permanent magnet motor rotor, is characterized in that, comprises rotating shaft (3), rotor core, permanent magnet trough (2), permanent magnet, rotor (1); In rotor core, centered by rotating shaft (3), distribution becomes the permanent magnet trough (2) of integral multiple with motor pole number; The magnetic pole that one type permanent magnet forms a motor is jointly installed in each permanent magnet trough (2); Be uniformly distributed symmetrically arranged rotor (1) between permanent magnet trough (2) and rotor diameter, sliver passes rotor (1) and is connected to form cage-shaped structure with the end ring at axial two ends; Rotor (1) both sides being positioned at interpolar arrange symmetrical magnet isolation tank (4).
2. a kind of asynchronous starting and permanent magnet motor rotor according to claim 1, is characterized in that, the shape of described magnet isolation tank (4) is rectangle, trapezoidal or rhombus; The size of magnet isolation tank is less than open ended position between adjacent rotor groove (1), between permanent magnet trough (2) and rotor diameter.
3. a kind of asynchronous starting and permanent magnet motor rotor according to claim 1, is characterized in that, described magnet isolation tank (4) is applied on the rotor of 2,4,6,8 poles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744593.2A CN104917350A (en) | 2014-12-09 | 2014-12-09 | Asynchronous starting permanent magnet motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744593.2A CN104917350A (en) | 2014-12-09 | 2014-12-09 | Asynchronous starting permanent magnet motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104917350A true CN104917350A (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410744593.2A Pending CN104917350A (en) | 2014-12-09 | 2014-12-09 | Asynchronous starting permanent magnet motor rotor |
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| CN (1) | CN104917350A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425689A (en) * | 2017-08-21 | 2017-12-01 | 伊泽瑞尔(大连)科技有限公司 | A kind of anti-demagnetization permanent magnet machine rotor |
| CN110138115A (en) * | 2019-06-19 | 2019-08-16 | 珠海格力电器股份有限公司 | Synchronous magnetic resistance motor rotor structure, motor and compressor |
| CN112653268A (en) * | 2020-11-03 | 2021-04-13 | 安徽新沪屏蔽泵有限责任公司 | Rotor core, asynchronous starting permanent magnet synchronous motor and canned motor pump |
-
2014
- 2014-12-09 CN CN201410744593.2A patent/CN104917350A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425689A (en) * | 2017-08-21 | 2017-12-01 | 伊泽瑞尔(大连)科技有限公司 | A kind of anti-demagnetization permanent magnet machine rotor |
| CN107425689B (en) * | 2017-08-21 | 2024-02-02 | 伊泽瑞尔(大连)科技有限公司 | Anti-demagnetizing permanent magnet motor rotor |
| CN110138115A (en) * | 2019-06-19 | 2019-08-16 | 珠海格力电器股份有限公司 | Synchronous magnetic resistance motor rotor structure, motor and compressor |
| CN112653268A (en) * | 2020-11-03 | 2021-04-13 | 安徽新沪屏蔽泵有限责任公司 | Rotor core, asynchronous starting permanent magnet synchronous motor and canned motor pump |
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Legal Events
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| C06 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150916 |