CN103683602A - Permanent magnet motor rotor with low eddy-current loss - Google Patents
Permanent magnet motor rotor with low eddy-current loss Download PDFInfo
- Publication number
- CN103683602A CN103683602A CN201310647773.4A CN201310647773A CN103683602A CN 103683602 A CN103683602 A CN 103683602A CN 201310647773 A CN201310647773 A CN 201310647773A CN 103683602 A CN103683602 A CN 103683602A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- rotor
- rotor core
- current loss
- press plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a permanent magnet motor rotor with low eddy-current loss. A rotor core is fixedly arranged on a rotor shaft through key connection, various permanent magnets are matched with the rotor core, and a front rotor pressing plate and a rear rotor pressing plate are respectively and fixedly arranged on the front end face and the rear end face of the rotor core. The permanent magnet motor rotor is characterized in that the surfaces of the permanent magnets are provided with insulating layers, so that mutual insulation is formed between the permanent magnets, between the permanent magnets and the rotor core, between the permanent magnets and the front rotor pressing plate and between the permanent magnets and the rear rotor pressing plate. The permanent magnet motor rotor can obviously reduce induced current loss and the eddy-current loss of the permanent magnets and improve the motor efficiency.
Description
Technical field
The present invention relates to rotor structure for permanent magnet motor, especially at a kind of rotor structure for permanent magnet motor of low eddy current loss.
Background technology
Along with the development of technology, the raising of the performance boost of Nd-Fe-Bo permanent magnet material and motor processing and manufacturing precision, progressively improves the efficiency of motor.But, in the practice process of industrial technology, find, particularly in the permanent magnet motor structure for some fractional slot winding, because harmonic field is applied on the rotor of motor, in the loop forming at permanent magnet, front rotor press plate and rear rotor press plate, induce electric current, produce loss.And because permanent magnet volume is larger, make to produce eddy current in epitrochanterian permanent magnet, greatly reduce the efficiency of motor.
Summary of the invention
The present invention be for avoid the existing deficiency of above-mentioned prior art it, a kind of permanent magnet machine rotor of low eddy current loss is provided, to reducing the eddy current loss of permanent magnet, improve the efficiency of motor.
The present invention is that technical solution problem adopts following technical scheme:
The permanent magnet machine rotor of the low eddy current loss of the present invention, be by key, to be connected and fixed and rotor core, each permanent magnet and rotor core are set are equipped with on armature spindle, and have front rotor press plate and rear rotor press plate to be fixedly installed on respectively on the front end face and rear end face of described rotor core; Its design feature is: the surface that described each permanent magnet is set has insulating barrier, make between each permanent magnet, between each permanent magnet and rotor core, between each permanent magnet and front rotor press plate, and form mutually insulated between each permanent magnet and rear rotor press plate.
The design feature of the permanent magnet machine rotor of the low eddy current loss of the present invention is also: described each permanent magnet vertically subsection setup is each permanent magnet segment, and is formed with insulating barrier between described each permanent magnet segment.
The design feature of the permanent magnet machine rotor of the low eddy current loss of the present invention is also: being equipped with of described permanent magnet and rotor core comprises, described permanent magnet is equipped with rotor core with embedded, and described permanent magnet is equipped with external labeling type and rotor core.
Compared with the prior art, beneficial effect of the present invention is embodied in:
By the checking of 3 D electromagnetic field finite element simulation and experimental prototype, adopt rotor structure of the present invention can make the peak efficiency of fractional slot permanent magnet synchronous motor rise to 95.5% left and right by 93% left and right, for energy-conservation and power density lifting motor, have very great significance.
Accompanying drawing explanation
Fig. 1 is rotor structure for permanent magnet motor schematic diagram of the present invention;
Fig. 2 is the A-A view of Fig. 1;
Fig. 3 is permanent magnet sectional structure schematic diagram in the present invention;
Fig. 4 is permanent magnet perspective view of the present invention;
Number in the figure: 1 armature spindle, 2 front rotor press plates, 3 rear rotor press plates, 4 permanent magnets, 5 rotor cores.
Embodiment
Referring to Fig. 1, Fig. 2, the present embodiment is that to take embedded " V " font permanent-magnet pole rotor structure for permanent magnet motor be example, on armature spindle 1, by key, be connected and fixed rotor core 5 be set, each permanent magnet 4 is equipped with rotor core 5, and has front rotor press plate 2 and rear rotor press plate 3 to be fixedly installed on respectively on the front end face and rear end face of rotor core 5; The surface that each permanent magnet 4 is set has insulating barrier, make between each permanent magnet, between each permanent magnet and rotor core, between each permanent magnet and front rotor press plate, and forming mutually insulated between each permanent magnet and rear rotor press plate, front rotor press plate and rear rotor press plate are to adopt NULL.
In concrete enforcement, as shown in Figure 3 and Figure 4, each permanent magnet 4 is that subsection setup is each permanent magnet segment vertically, and is formed with insulating barrier between each permanent magnet segment.Each permanent magnet segment small volume of subsection setup, this makes the eddy current that produces in epitrochanterian permanent magnet less, has greatly promoted the efficiency of motor.
Fig. 1 and Figure 2 shows that permanent magnet 4 is to be equipped with embedded and rotor core 5, also can be applied in the version that permanent magnet 4 is equipped with external labeling type and rotor core 5 with the same structure setting of the present embodiment.
In concrete enforcement, on the surface of each permanent magnet segments, adopt insulating treatment process, as plastic packaging epoxy finishes, whole iron core utilizes front rotor press plate and rear rotor press plate to clamp and do every magnetic treatment.This version makes permanent magnet, rotor core, front rotor press plate, and cannot form galvanic circle between rear each member of rotor press plate, when there is harmonic field in rotor, does not induce electric current, lossless generation in loop.
By the finite element analysis of electromagnetic field, the conventional permagnetic synchronous motor in the prior art that is 170mm for external diameter, the magnetic field scheme of employing 12 utmost point 18 grooves, due to the existence of eddy current loss, under specified 24KW rated power, rotor loss is up to 630 watts.And adopt the present invention to improve structure, and permanent magnet is divided into four sections, and forms insulating barrier on the surface of each permanent magnet segment, rotor loss is 123 watts, is reduced to 1/5 original left and right; Actual model machine contrast is known, and under same condition, the present invention makes electric efficiency promote 2～2.5%, and effect is remarkable.
Claims (3)
1. the permanent magnet machine rotor of a low eddy current loss, be armature spindle (1) upper by key, be connected and fixed rotor core (5) is set, each permanent magnet (4) is equipped with rotor core (5), and has front rotor press plate (2) and rear rotor press plate (3) to be fixedly installed on respectively on the front end face and rear end face of described rotor core (5); It is characterized in that: the surface that described each permanent magnet (4) is set has insulating barrier, make between each permanent magnet, between each permanent magnet and rotor core, between each permanent magnet and front rotor press plate, and form mutually insulated between each permanent magnet and rear rotor press plate.
2. the permanent magnet machine rotor of low eddy current loss according to claim 1, is characterized in that: described each permanent magnet vertically subsection setup is each permanent magnet segment, and is formed with insulating barrier between described each permanent magnet segment.
3. the permanent magnet machine rotor of low eddy current loss according to claim 1 and 2, it is characterized in that: described permanent magnet (4) comprises with being equipped with of rotor core (5), described permanent magnet (4) is equipped with rotor core (5) with embedded, and described permanent magnet (4) is equipped with external labeling type and rotor core (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310647773.4A CN103683602A (en) | 2013-12-04 | 2013-12-04 | Permanent magnet motor rotor with low eddy-current loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310647773.4A CN103683602A (en) | 2013-12-04 | 2013-12-04 | Permanent magnet motor rotor with low eddy-current loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103683602A true CN103683602A (en) | 2014-03-26 |
Family
ID=50320224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310647773.4A Pending CN103683602A (en) | 2013-12-04 | 2013-12-04 | Permanent magnet motor rotor with low eddy-current loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103683602A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425628A (en) * | 2016-05-26 | 2017-12-01 | 包头金山磁材有限公司 | A kind of magneto magnet and production method for reducing eddy-current heating |
| CN108574349A (en) * | 2017-03-08 | 2018-09-25 | Tdk株式会社 | Magnet laminated body and engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201038847Y (en) * | 2007-04-10 | 2008-03-19 | 上海日立电器有限公司 | Built-in magnet permanent magnetic rotor magnetic pole magnet of compressor |
| JP2009177861A (en) * | 2008-01-21 | 2009-08-06 | Sumitomo Electric Ind Ltd | Rotor plate and rotor |
| CN102171908A (en) * | 2008-10-02 | 2011-08-31 | 日产自动车株式会社 | Field pole magnet, field pole magnet manufacturing method, and permanent magnet rotary machine |
| CN202586554U (en) * | 2012-05-28 | 2012-12-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor and built-in permanent magnet motor |
| CN202652027U (en) * | 2012-07-12 | 2013-01-02 | 深圳市乐丰科技有限公司 | Permanent magnet synchronous motor and rotor component thereof |
| CN203554106U (en) * | 2013-12-04 | 2014-04-16 | 安徽巨一自动化装备有限公司 | Low eddy current loss permanent magnet motor rotor |
-
2013
- 2013-12-04 CN CN201310647773.4A patent/CN103683602A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201038847Y (en) * | 2007-04-10 | 2008-03-19 | 上海日立电器有限公司 | Built-in magnet permanent magnetic rotor magnetic pole magnet of compressor |
| JP2009177861A (en) * | 2008-01-21 | 2009-08-06 | Sumitomo Electric Ind Ltd | Rotor plate and rotor |
| CN102171908A (en) * | 2008-10-02 | 2011-08-31 | 日产自动车株式会社 | Field pole magnet, field pole magnet manufacturing method, and permanent magnet rotary machine |
| CN202586554U (en) * | 2012-05-28 | 2012-12-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor and built-in permanent magnet motor |
| CN202652027U (en) * | 2012-07-12 | 2013-01-02 | 深圳市乐丰科技有限公司 | Permanent magnet synchronous motor and rotor component thereof |
| CN203554106U (en) * | 2013-12-04 | 2014-04-16 | 安徽巨一自动化装备有限公司 | Low eddy current loss permanent magnet motor rotor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425628A (en) * | 2016-05-26 | 2017-12-01 | 包头金山磁材有限公司 | A kind of magneto magnet and production method for reducing eddy-current heating |
| CN108574349A (en) * | 2017-03-08 | 2018-09-25 | Tdk株式会社 | Magnet laminated body and engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103219814B (en) | Asynchronous starting permanent magnet synchronous motor rotor based on permanent magnets with different residual magnetic densities | |
| CN202424345U (en) | Permanent magnet motor with mixed magnetic poles | |
| CN105449968A (en) | Composite magnetic pole type surface-mounted permanent magnet synchronous motor | |
| CN105680656B (en) | A kind of axial arrangement magneto | |
| CN101826763A (en) | Rotor structure of permanent magnet motor | |
| CN104659940A (en) | Rotor of rotating motor | |
| CN108631468A (en) | Combine the surface-mounted permanent magnet machine of the mode of magnetization | |
| CN206250933U (en) | A kind of low-energy-efficiency asynchronous machine efficiently remanufactures AC permanent magnet motor | |
| CN102545433A (en) | Tangential rotor for rotating motor | |
| CN204465184U (en) | A kind of rotary motor rotor | |
| CN203632381U (en) | Permanent magnet motor rotor iron core | |
| CN103683602A (en) | Permanent magnet motor rotor with low eddy-current loss | |
| CN103368292A (en) | Novel structure of rotor punching sheet of permanent magnet motor | |
| CN105391264A (en) | Combination magnetic pole type build-in tangential permanent magnet synchronous motor | |
| CN203554106U (en) | Low eddy current loss permanent magnet motor rotor | |
| CN202444339U (en) | Fault-tolerant-type semi-tooth-winding stator surface mounting type permanent magnet motor | |
| CN204258455U (en) | A kind of Novel electric excitation biconvex electrode electric machine stator punching | |
| CN203377700U (en) | Novel permanent magnet motor rotor | |
| CN203788059U (en) | A Parallel Hybrid Magnetic Material Motor | |
| CN202997733U (en) | Disc type motor | |
| CN106787569A (en) | A kind of magnetic suspension flux switch motor | |
| CN206650564U (en) | A kind of magnetic suspension flux switch motor | |
| CN203674940U (en) | Series-type hybrid magnetic material motor | |
| CN207353937U (en) | A kind of highly effective permanent-magnet motor rotor core | |
| CN103647422B (en) | A kind of magnetic circuit tandem type motor using hybrid permanent magnet material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |