CN102868275A - Three-phase permanent magnet synchronous motor - Google Patents
Three-phase permanent magnet synchronous motor Download PDFInfo
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- CN102868275A CN102868275A CN2012103468226A CN201210346822A CN102868275A CN 102868275 A CN102868275 A CN 102868275A CN 2012103468226 A CN2012103468226 A CN 2012103468226A CN 201210346822 A CN201210346822 A CN 201210346822A CN 102868275 A CN102868275 A CN 102868275A
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Abstract
The invention discloses a three-phase permanent magnet synchronous motor, which is provided with a stator core, wherein a coil is embedded in the stator core, and an end cover is respectively connected to two ends of the stator iron; a rotating shaft extends out of one end of the one end cover through bearings; a rotor is connected to the rotating shaft; the stator iron is formed by linearly laminating and riveting a silicon-steel sheet of which the inner circumference is punched with a wire slot in the axial direction; the rotor is formed by skewing, laminating and aluminizing a silicon-steel sheet the outer circumference of which is punched with an aluminizing slot and an arc-shaped magnetic steel slot in the axial direction; and the magnetic steel is arranged in an arc-shaped chute of the rotor and is adhered with a rare earth permanent magnet material to form an inclined tile shape. According to the invention, due to adoption of a stator straight slot, the machining cost of the stator iron is reduced, and the three-phase permanent magnet synchronous motor is convenient for line inserting and suitable for large-scale production; and because the inclined slot of the rotor is adopted, magnetic isolation is naturally formed in a fit clearance in the circumference direction after the magnetic steel shaped as an inclined tile is mounted, therefore the punching strength is effectively improved and the rotor can be machined conveniently. The three-phase permanent magnet synchronous motor has the advantages of simple structure, operation reliability and stability, high efficiency, wide speed adjusting range, constant torque output and capability of forming a simple and effective open-loop control system with constant rotating speed requirement.
Description
Technical field
The invention belongs to machine field, relate to three-phase permanent-magnetic synchronous motors, particularly a kind of asynchronous starting permanent magnet synchronous motor that is applicable to the 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 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, therefore 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, this multipole skewed slot magneto comprises rotor magnetic pole and stator core, its stator core has flume structure, and oblique distance is between 0.5 to 2 times of tooth pitch.The permanent magnet synchronous motor of this employing skewed stator slot has the efficient that improves permanent magnet motor, reduces vibration and noise, increases the advantages such as traveling comfort.
But permanent magnet synchronous motor adopts skewed stator slot, also has following defective: because stator lasmination has skewed slot, itself is just processed and bothers, as run into when the stator core surface also needs to pass the straight part such as screw and will increase again in addition other processing, and skewed slot causes the effective area of stator slot to reduce, and brings the trouble of rule, therefore can only manually roll off the production line, and can't roll off the production line by machine, 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 produced in enormous quantities, and this has had the oblique tile-shaped magnet steel of rotor chute requirement may.For existing the problems referred to above that adopt the permanent magnet synchronous motor of skewed stator slot and rotor straight trough, the applicant is through Improvement, now provide a kind of stator core easy to process, be conducive to rule, being convenient to mechanical automation produces in enormous quantities, and the energy implementation efficiency is high simultaneously, vibration noise is low, operate steadily 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 three-phase permanent-magnetic synchronous motors has stator core, and described stator core is embedded with coil, and the two ends of described stator core are connected with respectively end cap, and the bearing of rotating shaft by being arranged at its two ends stretches out from an end of described end cap; Rotor is connected in the described rotating shaft; Described stator core is had the silicon steel sheet of inserting slot to laminate riveted joint by axial straight line to form, form the stator straight trough at stator core by inner periphery punching; Described 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, described magnet steel is bonding rare earth permanent-magnetic material, be oblique watt of shape, 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: described bearing outer setting has bearing holder (housing, cover), and the material of described bearing holder (housing, cover) is nylon.
Also have, 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:
The present invention has designed a kind of three-phase permanent-magnetic synchronous motors that adopts stator straight trough, rotor chute according to specific demand.Prove in practice, the present invention adopts the stator straight trough, has reduced the processing cost of stator core, has made things convenient for rule, and can roll off the production line by machine, is convenient to mechanical automation and produces in enormous quantities.And adopted rotor chute, also 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.The present invention is simple in structure, operate steadily reliable, efficient is high, and its speed adjustable range is wide, and 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, the present invention adopts the nylon bearing cover, can prevent shaft current damage bearing.Be with fan blade on the rotor, 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 of the present invention.
Fig. 2 is the integrally-built stereogram of the present invention.
Fig. 3 is the schematic diagram of stator among the present invention (rivet laminates).
Fig. 4 is the schematic diagram of stator among the present invention (the bales catch riveting laminates).
Fig. 5 is the schematic diagram of rotor of the present invention (laminating during cast aluminium).
Fig. 6 is the schematic diagram of rotor of the present invention (the bales catch riveting laminates).
Fig. 7 is that rotor arc skewed slot of the present invention cooperates the formation nature every the axial view of magnetic with magnet steel.
Fig. 8 is that rotor 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 oblique tile-shaped magnet steel among 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.
As shown in Figure 1 and Figure 2, the present invention is a kind of three-phase permanent-magnetic synchronous motors, mainly comprises 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.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 3) or at a high speed in a state of excitement superimposed one bales catch riveting laminate (see figure 4), namely form stator straight trough 7(and see Fig. 3, Fig. 4), 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.Rotor 6 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 5) or at a high speed in a state of excitement superimposed one bales catch riveting laminate (see figure 6), namely form rotor chute 8 and arc skewed slot 8.1(sees Fig. 5, Fig. 6), rotor chute can effectively reduce electric and magnetic oscillation and noise, reduces loss and raises the efficiency.
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.
And for example 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.
In sum, three-phase permanent-magnetic synchronous motors structure of the present invention is improved design with simple electromagnetic structure and has been 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 (4)
1. three-phase permanent-magnetic synchronous motors, has stator core (1), described stator core (1) is embedded with coil (2), the two ends of described stator core (1) 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 described end cap (3); Rotor (6) is connected in the described rotating shaft (4); It is characterized in that: described 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, at stator core (1) formation stator straight trough (7); Described 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. described three-phase permanent-magnetic synchronous motors according to claim 1 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. described three-phase permanent-magnetic synchronous motors according to claim 1, it is characterized in that: described bearing (5) outer setting has bearing holder (housing, cover) (11), and the material of described bearing holder (housing, cover) (11) is nylon.
4. 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 |
|---|---|---|---|
| CN2012103468226A CN102868275A (en) | 2012-09-18 | 2012-09-18 | Three-phase permanent magnet synchronous motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103468226A CN102868275A (en) | 2012-09-18 | 2012-09-18 | Three-phase permanent magnet synchronous motor |
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| CN102868275A true CN102868275A (en) | 2013-01-09 |
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| CN2012103468226A Pending CN102868275A (en) | 2012-09-18 | 2012-09-18 | Three-phase permanent magnet synchronous motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174652A (en) * | 2013-03-09 | 2013-06-26 | 郭自刚 | Novel energy-saving screw air compressor and its matching rare earth permanent magnet motor |
| CN107612164A (en) * | 2017-09-20 | 2018-01-19 | 广州市昊志机电股份有限公司 | The high-performance copper rotor asynchronous motor of frock and electro spindle the double skewed slots stator of stator core and stator core |
| CN109980809A (en) * | 2019-05-06 | 2019-07-05 | 佛山市顺德区一虎电子科技有限公司 | A kind of motor with oblique charged magnet |
| CN113381543A (en) * | 2021-07-14 | 2021-09-10 | 横店集团东磁股份有限公司 | Permanent magnet motor rotor, permanent magnet motor and processing method of permanent magnet motor rotor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201681685U (en) * | 2010-04-06 | 2010-12-22 | 杭州永磁集团有限公司 | Inclined tile-shaped Nd-Fe-B magnet body |
| CN201821245U (en) * | 2010-09-20 | 2011-05-04 | 辽宁浩方天成智能系统有限公司 | Asynchronous-starting permanent magnet synchronous motor of beam-pumping unit |
| CN102487236A (en) * | 2009-12-17 | 2012-06-06 | 王乃兵 | Rotor of permanent magnet synchronous motor |
| CN202918159U (en) * | 2012-09-18 | 2013-05-01 | 无锡锡山特种风机有限公司 | Three-phase permanent magnet synchronous motor |
-
2012
- 2012-09-18 CN CN2012103468226A patent/CN102868275A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487236A (en) * | 2009-12-17 | 2012-06-06 | 王乃兵 | Rotor of permanent magnet synchronous motor |
| CN201681685U (en) * | 2010-04-06 | 2010-12-22 | 杭州永磁集团有限公司 | Inclined tile-shaped Nd-Fe-B magnet body |
| CN201821245U (en) * | 2010-09-20 | 2011-05-04 | 辽宁浩方天成智能系统有限公司 | Asynchronous-starting permanent magnet synchronous motor of beam-pumping unit |
| CN202918159U (en) * | 2012-09-18 | 2013-05-01 | 无锡锡山特种风机有限公司 | Three-phase permanent magnet synchronous motor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174652A (en) * | 2013-03-09 | 2013-06-26 | 郭自刚 | Novel energy-saving screw air compressor and its matching rare earth permanent magnet motor |
| CN103174652B (en) * | 2013-03-09 | 2015-08-12 | 宁德市优力维特电梯配件有限公司 | A kind of screw air compressor and supporting rare-earth permanent-magnet electric machine thereof |
| CN107612164A (en) * | 2017-09-20 | 2018-01-19 | 广州市昊志机电股份有限公司 | The high-performance copper rotor asynchronous motor of frock and electro spindle the double skewed slots stator of stator core and stator core |
| CN109980809A (en) * | 2019-05-06 | 2019-07-05 | 佛山市顺德区一虎电子科技有限公司 | A kind of motor with oblique charged magnet |
| CN113381543A (en) * | 2021-07-14 | 2021-09-10 | 横店集团东磁股份有限公司 | Permanent magnet motor rotor, permanent magnet motor and processing method of permanent magnet motor rotor |
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Application publication date: 20130109 |