CN203554106U - Low eddy current loss permanent magnet motor rotor - Google Patents

Low eddy current loss permanent magnet motor rotor Download PDF

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Publication number
CN203554106U
CN203554106U CN201320793417.9U CN201320793417U CN203554106U CN 203554106 U CN203554106 U CN 203554106U CN 201320793417 U CN201320793417 U CN 201320793417U CN 203554106 U CN203554106 U CN 203554106U
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CN
China
Prior art keywords
permanent magnet
rotor
eddy current
current loss
low eddy
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.)
Active
Application number
CN201320793417.9U
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Chinese (zh)
Inventor
王淑旺
林巨广
孙纯哲
马祥宏
徐义
赵前坚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Juyi Technology Co., Ltd
Original Assignee
Anhui JEE Automation Equipment Co Ltd
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Publication date
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Priority to CN201320793417.9U priority Critical patent/CN203554106U/en
Application granted granted Critical
Publication of CN203554106U publication Critical patent/CN203554106U/en
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Abstract

The utility model discloses a low eddy current loss permanent magnet motor rotor. A rotor shaft is fixedly provided with a rotor iron core through key joint, and each permanent magnet and the rotor iron core are cooperatively arranged; a front rotor pressure plate and a rear rotor pressure plate are respectively fixedly arranged on the front end face and the rear end face of the rotor iron core. The characteristics are that the surface of each permanent magnet possesses an insulating layer, which forms mutual insulation among permanent magnets, between each permanent magnet and the rotor iron core, between each permanent magnet and the front rotor pressure plate, and between each permanent magnet and the rear rotor pressure plate. The low eddy current loss permanent magnet motor rotor can substantially minimize induced current loss and permanent magnet eddy current loss and raise motor efficiency.

Description

The permanent magnet machine rotor of low eddy current loss
Technical field
The utility model 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.
Utility model content
The utility model 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 utility model is that technical solution problem adopts following technical scheme:
The permanent magnet machine rotor of the low eddy current loss of the utility model, 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 utility model 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 utility model 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, the utility model beneficial effect is embodied in:
By the checking of 3 D electromagnetic field finite element simulation and experimental prototype, adopt the utility model rotor structure 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 utility model;
Fig. 2 is the A-A view of Fig. 1;
Fig. 3 is permanent magnet sectional structure schematic diagram in the utility model;
Fig. 4 is the utility model permanent magnet perspective view;
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 take embedded " V " font permanent-magnet pole rotor structure for permanent magnet motor as example, on armature spindle 1, by key, be connected and fixed and rotor core 5, each permanent magnet 4 is set is equipped with rotor core 5, and have 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, the structure setting same with the present embodiment also can be applied in the version that permanent magnet 4 is equipped with external labeling type and rotor core 5.
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 the 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 utility model 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 utility model 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).
CN201320793417.9U 2013-12-04 2013-12-04 Low eddy current loss permanent magnet motor rotor Active CN203554106U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320793417.9U CN203554106U (en) 2013-12-04 2013-12-04 Low eddy current loss permanent magnet motor rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320793417.9U CN203554106U (en) 2013-12-04 2013-12-04 Low eddy current loss permanent magnet motor rotor

Publications (1)

Publication Number Publication Date
CN203554106U true CN203554106U (en) 2014-04-16

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Family Applications (1)

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CN201320793417.9U Active CN203554106U (en) 2013-12-04 2013-12-04 Low eddy current loss permanent magnet motor rotor

Country Status (1)

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CN (1) CN203554106U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103683602A (en) * 2013-12-04 2014-03-26 安徽巨一自动化装备有限公司 Permanent magnet motor rotor with low eddy-current loss

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103683602A (en) * 2013-12-04 2014-03-26 安徽巨一自动化装备有限公司 Permanent magnet motor rotor with low eddy-current loss

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CP03 Change of name, title or address

Address after: No.5821, Fanfu Avenue, Baohe District, Hefei City, Anhui Province

Patentee after: Anhui Juyi Technology Co., Ltd

Address before: Baohe District of Hefei City, Anhui province 230051 Baohe Industrial Park Jianghuai heavy industry base

Patentee before: ANHUI JEE AUTOMATION EQUIPMENT Co.,Ltd.

CP03 Change of name, title or address