CN103973063A - Novel rotor structure capable of improving starting performance and steady-state performance of permanent magnet motor - Google Patents
Novel rotor structure capable of improving starting performance and steady-state performance of permanent magnet motor Download PDFInfo
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- CN103973063A CN103973063A CN201410139036.8A CN201410139036A CN103973063A CN 103973063 A CN103973063 A CN 103973063A CN 201410139036 A CN201410139036 A CN 201410139036A CN 103973063 A CN103973063 A CN 103973063A
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Abstract
The invention particularly relates to a novel rotor structure capable of improving starting performance and steady-state performance of a permanent magnet motor and belongs to the field of the electrical engineering technology. The novel rotor structure comprises a rotary shaft and a rotor iron core sleeved on the rotary shaft. A plurality of permanent magnets are distributed on the lateral side of the rotor iron core and form an octagon. Magnetism isolation bridges are arranged on the rotor iron core in the recesses formed among the permanent magnets, the rotor iron core is circumferentially provided with a jacket groove, and the jacket groove is provided with a circumferential sectional solid rotor jacket. Compared with the prior art, the novel rotor structure has the advantages that vortex generated on the solid jacket during starting can obtain starting torque larger than a rotor of a lamination structure and starting current smaller than the permanent magnet motor of the solid structure; salient pole rate of the motor is increased, pull-in synchronization capacity, overload capacity and torque density of the motor are improved, overheating of the rotor jacket is avoided, temperature rise of the robot during starting is effectively reduced, and the permanent magnets are favorably protected.
Description
Technical field
The present invention is specifically related to a kind of new type rotor structure that improves magneto starting performance and steady-state behaviour, belongs to electrical engineering technical field.
Background technology
Magneto adopts permanent magnet excitation, has cancelled excitation winding and field power supply, simple in structure, reliable.Owing to there is no the loss of excitation system, obtain higher efficiency.And still can keep higher efficiency operation when loading within the scope of 25%-120% nominal load motor while changing.This is widely used in magneto: the every field such as daily life, war industry, Aero-Space.But magneto also has its intrinsic shortcoming, as starting torque compared with little, starting current is large.Therefore, often adopt solid rotor structure to increase the starting torque of motor in heavy-load start occasion.Although solid-rotor permanent-magnet synchronous machine can be exported larger starting torque, but corresponding starting current is also larger, the Permanent Magnet and Electric that efficiency when motor steady operation is compared laminated rotor structure is confidential low, and temperature rise is higher, this may cause permanent magnet part or whole losss of excitation, and magneto cannot normally be moved.
Summary of the invention
In order to overcome the deficiencies in the prior art, the present invention proposes a kind of new type rotor structure that improves asynchronous starting and permanent magnet motor starting performance and steady-state behaviour, comprise the rotor core that in rotating shaft and rotating shaft there is cover, rotor core side is distributed with some permanent magnets and forms octangle, the rotor core of the nook forming between permanent magnet is provided with every magnetic bridge, rotor core week is upwards provided with sheath groove, and sheath groove is provided with circumferential segmented solid rotor sheath.
The described solid sheath of circumferential segmented is alternately distributed composition by conduction distinguish sheath and magnetic conduction conduction distinguish sheath; Magnetic conduction conduction distinguish sheath is dovetail groove shape, and the area that magnetic conduction conduction distinguish sheath accounts for every utmost point is 70%-80%; The center line of magnetic conduction conduction distinguish sheath overlaps with magnetic pole quadrature axis, and the center line of conduction distinguish sheath overlaps with magnetic pole d-axis; Conduction distinguish sheath and magnetic conduction conduction distinguish sheath are connected by welding on rotor core, and conduction is differentiated sheath and is located in sheath groove.
Sheath groove comprises the first sheath and the second sheath groove, and conduction distinguish sheath is housed on the first sheath groove, and magnetic conduction conduction distinguish sheath is housed on the second sheath groove.
The upper half-round slot that described conduction distinguish sheath inner circle side is provided with trapezoidal projection and is provided with in trapezoidal protruding bilateral symmetry; The first sheath groove is distributed with dovetail groove and second circular groove with conduction distinguish sheath opposite position.
Upper half-round slot on described conduction distinguish sheath and the synthetic air duct of second circular groove composition on rotor core.
Sheath groove comprises the first sheath groove and the 3rd sheath groove, does is the 3rd sheath groove? to being provided with three grooves, in the 3rd sheath groove, be provided with starting cage article, the conduction distinguish sheath being provided with in the first sheath groove is connected by end ring with starting cage bar.
The beneficial effect that compared to the prior art the present invention had: adopt magnetic conduction conduction distinguish sheath and conduction distinguish sheath to be alternately distributed formation rotor jacket, utilize the eddy current producing on solid sheath in starting process can obtain the starting torque larger than lamination rotor, the starting current less than solid construction magneto.The center line of magnetic conduction conduction distinguish sheath aligns with motor quadrature axis, and the center line of conduction distinguish sheath aligns with d-axis.Adopt this structure can increase the salient pole rate of motor, to improve the ability of pulling in, overload capacity and the torque density of motor.Rotor core adopts lamination.The synthetic air channel being formed by the half slot on half slot and the rotor core of the solid distinguish sheath of conduction; the heat that can in time motor starting process middle sleeve be produced sheds; can avoid rotor jacket overheated, effectively reduce the temperature rise of starting process rotor, be conducive to protect permanent magnet.
Brief description of the drawings
Fig. 1 is rotor structure overall schematic of the present invention;
Fig. 2 is the embodiment of the present invention 1 structural representation;
Fig. 3 is that distinguish sheath enlarged diagram is conducted electricity in the present invention;
Fig. 4 is the present invention's one utmost point rotor core enlarged diagram.
Embodiment
When considered in conjunction with the accompanying drawings, by the detailed description with reference to below, can more completely understand better the present invention and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide a further understanding of the present invention, forms a part of the present invention.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation with embodiment by reference to the accompanying drawings.
Embodiment 1: as shown in Figure 1, comprise that circumferential segmented solid rotor sheath 1, rotor core 3, synthetic air duct 6 and rotating shaft 4 form.Sheath is alternately arranged and is formed and be arranged on respectively in the first sheath groove and the second sheath groove by magnetic conduction conduction distinguish sheath 1-2 and conduction distinguish sheath 1-1.Magnetic conduction conduction distinguish sheath 1-2 and conduction distinguish sheath 1-1 are by being welded to connect and level and smooth grinding process in addition.Magnetic conduction is conducted electricity to distinguish sheath 1-2 and make dovetail groove shape.On every conduction distinguish sheath 1-1, have m(m=2n, n is positive integer) individual upper half-round slot 6-1, and have trapezoidal protruding 8(to Figure 3 shows that two half slot situations).Have second circular groove 6-2 and dovetail groove 9(as shown in Figure 4 at rotor core corresponding position).By the circumferential segmented solid rotor sheath 1 having welded, push vertically rotor core 3 by the dovetail groove 9 on rotor core 3, upper half-round slot 6-1 and second circular groove 6-2 form synthetic air duct 6.Form the magnetic pole of motor with two V-shaped permanent magnets 2, and d-axis is overlapped with the center line of conduction distinguish sheath 1-1, quadrature axis and magnetic conduction conduct electricity the center line of distinguish sheath 1-2 and overlap.On the center line of two permanent magnets 2, be provided with and leg-of-muttonly carry out every magnetic every magnetic bridge 5.On the rotor core between permanent magnet 2 and axle 4,8 circular ventilation holes 7 are circumferentially evenly offered on edge.
Embodiment 2: as shown in Figure 2, other schemes are identical with embodiment 1, is wherein provided with the conduction distinguish sheath 1-1 being provided with in starting cage article 10, the first sheath grooves and is connected by end ring with starting cage bar 10 in three of the 3rd sheath groove articles of grooves.
Above a kind of new type rotor structure that improves asynchronous starting and permanent magnet motor starting performance and steady-state behaviour provided by the present invention is described in detail, with reference to accompanying drawing, the application's exemplary embodiment is described above.Those skilled in the art should understand that; above-mentioned embodiment is only used to the object illustrating and the example of lifting; instead of be used for limiting; any amendment of doing under all instructions in the application and claim protection range, be equal to replacement etc., all should be included in the claimed scope of the application.
Claims (6)
1. one kind is improved the new type rotor structure of magneto starting performance and steady-state behaviour, it is characterized in that: comprise the rotor core that in rotating shaft and rotating shaft there is cover, rotor core side is distributed with some permanent magnets and forms octangle, the rotor core of the nook forming between permanent magnet is provided with every magnetic bridge, rotor core week is upwards provided with sheath groove, and sheath groove is provided with circumferential segmented solid rotor sheath.
2. a kind of new type rotor structure that improves asynchronous starting and permanent magnet motor starting performance and steady-state behaviour according to claim 1, is characterized in that: the described solid sheath of circumferential segmented is alternately distributed composition by conduction distinguish sheath and magnetic conduction conduction distinguish sheath; Magnetic conduction conduction distinguish sheath is dovetail groove shape, and the area that magnetic conduction conduction distinguish sheath accounts for every utmost point is 70%-80%; The center line of magnetic conduction conduction distinguish sheath overlaps with magnetic pole quadrature axis, and the center line of conduction distinguish sheath overlaps with magnetic pole d-axis; Conduction distinguish sheath and magnetic conduction conduction distinguish sheath are connected by welding on rotor core, and conduction is differentiated sheath and is located in sheath groove.
3. a kind of new type rotor structure that improves asynchronous starting and permanent magnet motor starting performance and steady-state behaviour according to claim 2, it is characterized in that: sheath groove comprises the first sheath and the second sheath groove, conduction distinguish sheath is housed on the first sheath groove, magnetic conduction conduction distinguish sheath is housed on the second sheath groove.
4. a kind of new type rotor structure that improves asynchronous starting and permanent magnet motor starting performance and steady-state behaviour according to claim 3, is characterized in that institute: the upper half-round slot that described conduction distinguish sheath inner circle side is provided with trapezoidal projection and is provided with in trapezoidal protruding bilateral symmetry; The first sheath groove is distributed with dovetail groove and second circular groove with conduction distinguish sheath opposite position.
5. a kind of new type rotor structure that improves asynchronous starting and permanent magnet motor starting performance and steady-state behaviour according to claim 3, is characterized in that: the upper half-round slot on described conduction distinguish sheath and the synthetic air duct of second circular groove composition on rotor core.
6. a kind of new type rotor structure that improves asynchronous starting and permanent magnet motor starting performance and steady-state behaviour according to claim 3, it is characterized in that: sheath groove comprises the first sheath groove and the 3rd sheath groove, does is the 3rd sheath groove? to being provided with three grooves, in the 3rd sheath groove, be provided with starting cage article, the conduction distinguish sheath being provided with in the first sheath groove is connected by end ring with starting cage bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410139036.8A CN103973063B (en) | 2014-04-08 | 2014-04-08 | A kind of new type rotor structure improving magneto starting performance and steady-state behaviour |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410139036.8A CN103973063B (en) | 2014-04-08 | 2014-04-08 | A kind of new type rotor structure improving magneto starting performance and steady-state behaviour |
Publications (2)
| Publication Number | Publication Date |
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| CN103973063A true CN103973063A (en) | 2014-08-06 |
| CN103973063B CN103973063B (en) | 2016-09-28 |
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| CN201410139036.8A Active CN103973063B (en) | 2014-04-08 | 2014-04-08 | A kind of new type rotor structure improving magneto starting performance and steady-state behaviour |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107749678A (en) * | 2017-11-27 | 2018-03-02 | 北京交通大学 | A kind of permanent magnet machine rotor sheath cooling structure device |
| CN112821619A (en) * | 2021-03-16 | 2021-05-18 | 山东理工大学 | Combined permanent magnet and brushless electromagnetic hybrid excitation generator for automobile |
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| US20030193258A1 (en) * | 2002-04-16 | 2003-10-16 | Reiter Frederick B. | Composite powder metal rotor sleeve |
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| CN101710746A (en) * | 2009-12-16 | 2010-05-19 | 三一电气有限责任公司 | Rotor and self-starting three-phase permanent magnet motor |
| CN102723827A (en) * | 2012-07-09 | 2012-10-10 | 罗寿元 | Special pure electric vehicle coaxial combination brushless DC motor with functions of power self-regulating and temperature control |
| US20130061457A1 (en) * | 2010-11-23 | 2013-03-14 | Remy Technologies, L.L.C. | Method of forming a rotor lamination assembly |
| CN103441634A (en) * | 2013-08-21 | 2013-12-11 | 北京交通大学 | Self-starting permanent magnet synchronous motor of magnetism and electricity conducting composite tooth structure |
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2014
- 2014-04-08 CN CN201410139036.8A patent/CN103973063B/en active Active
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| US20030193258A1 (en) * | 2002-04-16 | 2003-10-16 | Reiter Frederick B. | Composite powder metal rotor sleeve |
| CN101616568A (en) * | 2008-06-25 | 2009-12-30 | 富准精密工业(深圳)有限公司 | Heat abstractor |
| CN201298761Y (en) * | 2008-11-21 | 2009-08-26 | 湖南南车时代电动汽车股份有限公司 | Rotor for permanent-magnet motor |
| CN101710746A (en) * | 2009-12-16 | 2010-05-19 | 三一电气有限责任公司 | Rotor and self-starting three-phase permanent magnet motor |
| US20130061457A1 (en) * | 2010-11-23 | 2013-03-14 | Remy Technologies, L.L.C. | Method of forming a rotor lamination assembly |
| CN102723827A (en) * | 2012-07-09 | 2012-10-10 | 罗寿元 | Special pure electric vehicle coaxial combination brushless DC motor with functions of power self-regulating and temperature control |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107749678A (en) * | 2017-11-27 | 2018-03-02 | 北京交通大学 | A kind of permanent magnet machine rotor sheath cooling structure device |
| CN107749678B (en) * | 2017-11-27 | 2019-12-03 | 北京交通大学 | A kind of permanent magnet machine rotor sheath cooling structure device |
| CN112821619A (en) * | 2021-03-16 | 2021-05-18 | 山东理工大学 | Combined permanent magnet and brushless electromagnetic hybrid excitation generator for automobile |
| CN112821619B (en) * | 2021-03-16 | 2024-06-11 | 山东理工大学 | Combined permanent magnet and brushless electromagnetic hybrid excitation generator for automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103973063B (en) | 2016-09-28 |
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