CN102882298A - Structure of rotor of three-phase permanent-magnet synchronous motor - Google Patents
Structure of rotor of three-phase permanent-magnet synchronous motor Download PDFInfo
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- CN102882298A CN102882298A CN2012103479485A CN201210347948A CN102882298A CN 102882298 A CN102882298 A CN 102882298A CN 2012103479485 A CN2012103479485 A CN 2012103479485A CN 201210347948 A CN201210347948 A CN 201210347948A CN 102882298 A CN102882298 A CN 102882298A
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Abstract
The invention discloses a structure of the rotor of a three-phase permanent-magnet synchronous motor. The rotor is formed by casting aluminium on a silicon steel sheet axially slantwise in an overlaying way, wherein an aluminium casting slot is punched on the outer circumference of the silicon steel sheet, and an arc-shaped magnetic steel slot is punched in the silicon steel sheet; rotor slantwise slots and an arc-shaped slantwise slots are formed on the rotor; the magnetic steel is arranged in each arc-shaped slantwise slot of the rotor; and the magnetic steel is made of the adhesive rare-earth permanent-magnet material and is in the shape of an inclined tile. Because the rotor slantwise slots are adopted, the magnetic vibration and the noise are reduced greatly, the loss is reduced, and the efficiency is improved. When the magnetic steel in the shape of the inclined tile is arranged in the rotor slantwise slots, the fit clearance of the magnetic steel in the circumferential direction isolates magnetism naturally, thus the strength of the punched sheet is improved effectively, and the rotor can be processed conveniently by adopting the mature asynchronous motor rotor aluminum casting process. The three-phase permanent-magnet synchronous motor is simple in structure, can operate stably and reliably, has high efficiency and a wide range of speed regulation and outputs at constant torque. A simple and effective open-loop control system with constant rotation speed requirements can be formed, and the cost spent constructing a control system is saved.
Description
Technical field
The invention belongs to machine field, relate to three-phase permanent-magnetic synchronous motors, particularly a kind of rotor structure that is applicable to the asynchronous starting permanent magnet synchronous motor of synthetic fiber spinning elasticizer.
Background technology
In recent years, along with the fast development of power electronic technology, microelectric technique, New-type electric machine control theory and rare earth permanent-magnetic material, permanent magnet synchronous motor is applied rapidly.Permanent magnet synchronous motor is a kind of energy-saving motor, has invariablenes turning speed and rotating speed and supply frequency strict relation is arranged, and it is simple in structure, reliable, and volume is little, and loss is low, efficient advantages of higher and being used widely.Today in that energy savings and environmental protection come into one's own day by day, its research is just seemed very necessary.
In view of permanent-magnet synchronous motor rotor because there being permanent magnet (magnet steel) groove to be not easy to skewed slot, so the electromagnetic structure of traditional classical design be with the stator core of permanent magnet motor vertically the skew certain distance reduce the chopped cooked entrails of sheep loss of motor and supplementary load loss etc. with reduced harmonic.So conventional permanent magnet synchronous motor all adopts skewed stator slot, the configuration mode of rotor straight trough at present.For example application number just provides a kind of structure of multipole skewed slot magneto for the Chinese patent application of CN99246025.5, and this multipole skewed slot magneto comprises rotor magnetic pole and stator core, and its stator core has flume structure, and its rotor has straight groove structure.This employing skewed stator slot, the permanent magnet synchronous motor of rotor straight trough have the efficient that improves permanent magnet motor, reduce vibration and noise, increase the advantages such as traveling comfort.
But permanent magnet synchronous motor adopts the rotor straight trough, also has following defective: when in the arc straight trough of rotor, settling straight tile-shaped magnet steel, need to additionally offer every magnetic gap at the circumferencial direction two ends of arc straight trough, just itself process trouble, be difficult to form and produce in enormous quantities.For this large batch of demand of synthetic fiber spinning elasticizer, manufacturing schedule is difficult to catch up with especially.
Summary of the invention
Along with the breakthrough of rare earth permanent-magnetic material processing technology, emerging bonding rare earth permanent-magnetic material can be made complex-shaped, and dimensional accuracy is high, and rate of finished products is high and can be fit to the permanent magnet of production in enormous quantities, and it is possible that this has had the oblique tile-shaped magnet steel of rotor chute requirement.For existing the problems referred to above that adopt the permanent magnet synchronous motor of rotor straight trough, the applicant is through Improvement, but now provide a kind of rotor magnetic steel self-assembling formation every magnetic, improve punching intensity, being convenient to mechanical automation produces in enormous quantities, and the energy implementation efficiency is high simultaneously, vibration noise is low, operate steadily the rotor structure of the three-phase permanent-magnetic synchronous motors that speed adjustable range is wide.
Technical scheme of the present invention is as follows:
A kind of rotor structure of three-phase permanent-magnetic synchronous motors, rotor by excircle punching have silicon steel sheet that aluminum cast groove and inner punching have an arc magnet steel groove vertically skew laminate cast aluminium and form, form rotor chute and arc skewed slot at rotor; Magnet steel is arranged at respectively in each arc skewed slot of described rotor, and described magnet steel is bonding rare earth permanent-magnetic material, is oblique watt of shape, and watt body of described oblique watt of shape has radian, and two groups of opposite side of watt body are parallel respectively, and two groups of opposite side tilt mutually.
Its further technical scheme is: when described magnet steel is in the arc skewed slot of rotor, leave the space at circumferencial direction between magnet steel and the arc skewed slot.
And its further technical scheme is: the end face of described rotor is equipped with not only can be made heat transmission but also can remove the fan blade of reusing do dynamic balancing.
Useful technique effect of the present invention is:
Prove in practice, the present invention adopts rotor chute, can effectively reduce electric and magnetic oscillation and noise, reducing loss raises the efficiency, when in rotor arc skewed slot, settling oblique tile-shaped magnet steel, its at the fit clearance self-assembling formation of circumferencial direction every magnetic, Effective Raise punching intensity, and can make things convenient for rotor machining with the asynchronous machine rotor aluminum process of maturation.Adopt three-phase permanent-magnetic synchronous motors of the present invention simple in structure, operate steadily reliable, efficient is high, its speed adjustable range is wide, permanent moment of torsion output can form the simple and effective open-loop control system of persevering rotating speed requirement, saves the cost that makes up control system.
In addition, be with fan blade on the rotor of the present invention, not only can play radiating effect, can also realize that dynamic balancing goes heavy effect.
The aspect that the present invention adds and advantage provide in the embodiment description partly below, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Fig. 1 is the integrally-built cutaway view that adopts a kind of embodiment of three-phase permanent-magnetic synchronous motors of the present invention.
Fig. 2 is the integrally-built stereogram that adopts a kind of embodiment of three-phase permanent-magnetic synchronous motors of the present invention.
Fig. 3 is the schematic diagram of a kind of embodiment of the present invention's (laminating during cast aluminium).
Fig. 4 is the schematic diagram of the another kind of embodiment of the present invention's (the bales catch riveting laminates).
Fig. 5 is the schematic diagram of a kind of embodiment of stator core (rivet laminates) among Fig. 1.
Fig. 6 is the schematic diagram of the another kind of embodiment of stator core (the bales catch riveting laminates) among Fig. 1.
Fig. 7 is that arc skewed slot of the present invention cooperates the formation nature every the axial view of magnetic with magnet steel.
Fig. 8 is that arc skewed slot of the present invention cooperates the formation nature every the stereogram of magnetic with magnet steel.
Fig. 9 is the schematic diagram of the oblique tile-shaped magnet steel of the present invention.
[reference numeral explanation] be stator core 1.; 2. coil; 3. end cap; 4. rotating shaft; 5. bearing; 6. rotor; 7. stator straight trough; 8. rotor chute; 8.1. arc skewed slot; 9. magnet steel; 10. fit clearance; 11. bearing holder (housing, cover); 12. fan blade.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
Fig. 1, Fig. 2 show a kind of three-phase permanent-magnetic synchronous motors that adopts rotor structure of the present invention, mainly comprise stator core 1, coil 2, end cap 3, rotating shaft 4 and rotor 6.Stator core 1 is embedded with coil 2, and two ends are connected with respectively end cap 3, and the bearing 5 of rotating shaft 4 by being arranged at its two ends stretches out from an end of end cap 3, and rotor 6 is connected in the rotating shaft 4.
To shown in Figure 6, offer the groove structure that cooperatively interact on stator core 1 and the rotor 6 such as Fig. 3.Rotor 6 of the present invention by excircle punching have silicon steel sheet that aluminum cast groove and inner punching have an arc magnet steel groove vertically the skew certain distance laminate cast aluminium and form, laminate in the time of can adopting cast aluminium (see figure 3) or at a high speed in a state of excitement superimposed one bales catch riveting laminate (see figure 4), namely form rotor chute 8 and arc skewed slot 8.1(sees Fig. 3, Fig. 4), rotor chute can effectively reduce electric and magnetic oscillation and noise, reduces loss and raises the efficiency.The stator core that matches with the present invention can adopt various structures, for example available stator structure is: stator core 1 is had the silicon steel sheet of inserting slot to laminate riveted joint by axial straight line to form by inner periphery punching, can adopt rivet laminate (see figure 5) or at a high speed in a state of excitement superimposed one bales catch riveting laminate (see figure 6), namely form stator straight trough 7(and see Fig. 5, Fig. 6), reduced the processing cost of stator core, made things convenient for rule, and can roll off the production line by machine, be convenient to mechanical automation and produce in enormous quantities.
Such as Fig. 7, shown in Figure 8,4 magnet steel 9 are arranged at respectively in each arc skewed slot 8.1 of rotor 6, magnet steel 9 is bonding rare earth permanent-magnetic material, be oblique watt of shape (see figure 9), watt body of oblique watt of shape has radian, and two groups of opposite side of watt body are parallel respectively, and two groups of opposite side tilt mutually, so that one group of diagonal angle of watt body is acute angle, another group diagonal angle is the obtuse angle.Between the magnet steel 9 of oblique watt of shape and the arc skewed slot 8.1 fit clearance 10 self-assembling formations of circumferencial direction every the magnetic Effective Raise punching intensity.
In addition, as shown in Figure 1, bearing 5 outer setting have the bearing holder (housing, cover) 11 of nylon material, and its Main Function is to prevent shaft current damage bearing.The end face of rotor 6 is equipped with fan blade 12, not only can play radiating effect, can also play dynamic balancing and go heavy effect.
Below just adopt a kind of embodiment of the three-phase permanent-magnetic synchronous motors of rotor structure of the present invention, application of the present invention is not caused restriction.Those skilled in the art can on the basis of rotor structure provided by the present invention, develop the three-phase permanent-magnetic synchronous motors of various employings rotor structure of the present invention.
In sum, adopt the three-phase permanent-magnetic synchronous motors structure of rotor structure of the present invention, improve design with simple electromagnetic structure and realized high efficiency, high-speed smooth running, 4 utmost points (4P), 7200r/min, inverter supply, the permanent moment of torsion output of frequency 30～240Hz.Can satisfy well the requirement of mechanical large-scale production.
Above-described only is preferred implementation of the present invention, the invention is not restricted to above embodiment.Be appreciated that other improvement and variation that those skilled in the art directly derive or associate under the prerequisite that does not break away from basic conception of the present invention, all should think to be included within protection scope of the present invention.
Claims (3)
1. the rotor structure of a three-phase permanent-magnetic synchronous motors, it is characterized in that: rotor (6) by excircle punching have silicon steel sheet that aluminum cast groove and inner punching have an arc magnet steel groove vertically skew laminate cast aluminium and form, at rotor (6) formation rotor chute (8) and arc skewed slot (8.1); Magnet steel (9) is arranged at respectively in each arc skewed slot (8.1) of described rotor (6), described magnet steel (9) is bonding rare earth permanent-magnetic material, is oblique watt of shape, and watt body of described oblique watt of shape has radian, two groups of opposite side of watt body are parallel respectively, and two groups of opposite side tilt mutually.
2. the rotor structure of described three-phase permanent-magnetic synchronous motors according to claim 1, it is characterized in that: when described magnet steel (9) is in the arc skewed slot (8.1) of rotor (6), leave space (10) at circumferencial direction between magnet steel (9) and the arc skewed slot (8.1).
3. the rotor structure of described three-phase permanent-magnetic synchronous motors according to claim 1 is characterized in that: the end face of described rotor (6) is equipped with not only can be made heat transmission but also can remove the fan blade (12) of reusing do dynamic balancing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103479485A CN102882298A (en) | 2012-09-18 | 2012-09-18 | Structure of rotor of three-phase permanent-magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103479485A CN102882298A (en) | 2012-09-18 | 2012-09-18 | Structure of rotor of three-phase permanent-magnet synchronous motor |
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| CN102882298A true CN102882298A (en) | 2013-01-16 |
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| CN2012103479485A Pending CN102882298A (en) | 2012-09-18 | 2012-09-18 | Structure of rotor of three-phase permanent-magnet synchronous motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281461A (en) * | 2015-10-22 | 2016-01-27 | 珠海格力电器股份有限公司 | Motor rotor and self-starting synchronous motor |
| CN105978184A (en) * | 2016-05-06 | 2016-09-28 | 吕三元 | High-efficient asynchronous motor for new-energy automobile |
| CN106374652A (en) * | 2016-09-26 | 2017-02-01 | 威灵（芜湖）电机制造有限公司 | Rotor iron core, rotor and self-starting permanent magnet synchronous motor |
| CN108199552A (en) * | 2018-02-06 | 2018-06-22 | 重庆百转电动汽车电控系统有限责任公司 | A kind of rotor slot fit structure for electric vehicle induction machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2838132Y (en) * | 2005-07-29 | 2006-11-15 | 李明扬 | Improved rotor magnet structure of synchronous servo motor |
| US20090152979A1 (en) * | 2007-12-13 | 2009-06-18 | Denso Corporation | Automotive alternator including annular core having protrusions and recesses alternately formed on its outer surface |
| CN202178686U (en) * | 2011-08-22 | 2012-03-28 | 高国华 | Asynchronous squirrel-cage motor and rotor thereof |
| CN102611257A (en) * | 2011-01-20 | 2012-07-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor chute manufacturing device, motor manufacturing device and motor manufacturing method |
| CN202889010U (en) * | 2012-09-18 | 2013-04-17 | 无锡锡山特种风机有限公司 | Rotor structure of three-phase permanent-magnet synchronous motor |
-
2012
- 2012-09-18 CN CN2012103479485A patent/CN102882298A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2838132Y (en) * | 2005-07-29 | 2006-11-15 | 李明扬 | Improved rotor magnet structure of synchronous servo motor |
| US20090152979A1 (en) * | 2007-12-13 | 2009-06-18 | Denso Corporation | Automotive alternator including annular core having protrusions and recesses alternately formed on its outer surface |
| CN102611257A (en) * | 2011-01-20 | 2012-07-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor chute manufacturing device, motor manufacturing device and motor manufacturing method |
| CN202178686U (en) * | 2011-08-22 | 2012-03-28 | 高国华 | Asynchronous squirrel-cage motor and rotor thereof |
| CN202889010U (en) * | 2012-09-18 | 2013-04-17 | 无锡锡山特种风机有限公司 | Rotor structure of three-phase permanent-magnet synchronous motor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281461A (en) * | 2015-10-22 | 2016-01-27 | 珠海格力电器股份有限公司 | Motor rotor and self-starting synchronous motor |
| CN105281461B (en) * | 2015-10-22 | 2018-12-21 | 珠海格力电器股份有限公司 | Rotor and self-starting synchronous motor |
| CN105978184A (en) * | 2016-05-06 | 2016-09-28 | 吕三元 | High-efficient asynchronous motor for new-energy automobile |
| CN106374652A (en) * | 2016-09-26 | 2017-02-01 | 威灵（芜湖）电机制造有限公司 | Rotor iron core, rotor and self-starting permanent magnet synchronous motor |
| CN108199552A (en) * | 2018-02-06 | 2018-06-22 | 重庆百转电动汽车电控系统有限责任公司 | A kind of rotor slot fit structure for electric vehicle induction machine |
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Application publication date: 20130116 |