CN103312067B - A kind of outer rotor permanent magnet generator magnetic pole structure and assembly method - Google Patents
A kind of outer rotor permanent magnet generator magnetic pole structure and assembly method Download PDFInfo
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- CN103312067B CN103312067B CN201310194712.7A CN201310194712A CN103312067B CN 103312067 B CN103312067 B CN 103312067B CN 201310194712 A CN201310194712 A CN 201310194712A CN 103312067 B CN103312067 B CN 103312067B
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Abstract
The invention discloses a kind of outer rotor permanent magnet generator magnetic pole structure, comprise some blocks of magnet steel, every block magnet steel is all in tile shape, in magnet steel, the arcwall face corresponding to hub inner lumen surface is processed in outer arcuate face, magnet steel both sides processing forming V-shape scarf, magnet steel longitudinal cross-section parallelogram, wheel hub is by front, rear hub halves assembles, this field structure also comprises some insulation blend stops, processing forming V-shape inclined-plane, each insulation blend stop both sides, before insulation blend stop is fixed on, on rear hub halves surface of internal cavity, magnet steel setting-in is fixed in adjacent two insulation blend stops and the surperficial groove surrounded of hub inner lumen, setting-in is fixed on magnet steel on first half hub inner lumen surface and the setting-in magnet steel be fixed on later half hub inner lumen surface is that herringbone is symmetrical arranged.The invention also discloses pole assemblage method.Field structure of the present invention and assembly method have that torque pulsation is low, floating voltage fluctuation is little, vibrating noise is low and air gap is even, easy to process, reliable, efficiency advantages of higher is installed.
Description
Technical field
The present invention relates to a kind of permanent magnet generator and assembly method, particularly relate to field structure and the assembly method thereof of outer rotor permanent magnet generator.
Background technology
Direct-drive aerogenerator group does not use gearbox, but adopts straight drive blower and low speed multipole permanent-magnetic wind driven generator direct-coupling, and that gearbox can be avoided to bring is many unfavorable.Direct-drive aerogenerator group possesses low noise, unit durability is high, volume is little, operation expense is low, low wind speed time the plurality of advantages such as high efficiency.
Existing permanent magnet wind power generator rotor magnet steel mainly contains two kinds of versions, i.e. surface-mount type and embedded.Surface-mount type is directly adhered on the surface of internal cavity of permanent magnet generator wheel hub primarily of magnet steel, then it is fixed to be coated with sealing.Because permanent magnetism magnetic pole is larger, each magnetic pole forms by tens pieces little magnet steel, therefore bonding workload is comparatively large on the one hand, and the reliability that bonding magnetic steel is fixing is on the other hand also poor, and during bonding magnetic steel, can not fit with the inner chamber curved surfaces of wheel hub well in magnet steel surface simultaneously.Embeddedly generally be packaged in magnetic pole box by magnet steel, each magnetic pole box is equipped with polylith magnet steel, and multiple magnetic pole box is axially fixed in hub bracket along wheel hub; Due to magnetic pole box generally through punching press, rivet and be welded, be fixed in hub bracket through voussoir again, cause mould process complicated so on the one hand, cause assembling to waste time and energy on the other hand, as reduced floating voltage and staring torque by rotor magnetic pole skewed slot again, manufacture difficulty and cost larger.
At first US Patent No. 7987579B2, name is called that " Methodformountingpermanentmagnetthatformmagnetpolesonthe rotorofanelectricmachine " discloses a kind of installation method of outer rotor permanent magnet generator magnetic pole magnet steel, the program adopts and will charge the magnet steel of magnetic by installing fixing tool, overcome the suction between magnet steel and rotor, repulsive force between magnet steel and magnet steel, installs location by every block magnet steel exactly.But program installation effectiveness is lower, length consuming time, magnet steel also easily occurs damaged, simultaneously because the magnet steel of same polarity in installation process repels each other, magnet steel easily flies out and hurts sb.'s feelings, and cannot ensure the uniformity of air gap simultaneously, easily cause the fluctuation of floating voltage.
Summary of the invention
The technical problem to be solved in the present invention is to provide one, and not only torque pulsation is low, floating voltage fluctuation is little, vibrating noise is low and air gap uniformity, and simple and compact for structure, easy to process, reliable outer rotor permanent magnet generator magnetic pole structure is installed.Another technical problem that will solve of the present invention is to provide a kind of assembly method of outer rotor permanent magnet generator magnetic pole.
For solving the problems of the technologies described above, the present invention adopts so a kind of outer rotor permanent magnet generator magnetic pole structure, comprise some blocks of magnet steel, described magnet steel is fixedly mounted in the inner chamber of permanent magnet generator wheel hub, every block magnet steel is all in having, the tile shape in outer arcuate face, in described magnet steel, the arcwall face corresponding to hub inner lumen surface is processed in outer arcuate face, the both sides processing forming V-shape scarf of described magnet steel, the longitudinal cross-section parallelogram of magnet steel, described wheel hub is by front, rear hub halves assembles, this field structure also comprises several strips insulation blend stop, the V-arrangement inclined-plane matched with described magnet steel scarf is processed in the both sides of each insulation blend stop, before described insulation blend stop is fixedly mounted on along the spaced certain distance in circumference of hub direction, on the surface of internal cavity of rear hub halves, described magnet steel setting-in is fixed in adjacent two insulation blend stops and the surperficial groove surrounded of hub inner lumen, setting-in is fixed on magnet steel on first half hub inner lumen surface and the setting-in magnet steel be fixed on later half hub inner lumen surface is that herringbone is symmetrical arranged.
Described wheel hub by forward and backward hub halves be bolted be assembled into as a whole, described insulation blend stop is fixedly mounted on by screw on the surface of internal cavity of forward and backward hub halves, described magnet steel setting-in is also fixed in the groove that adjacent two insulation blend stops and hub inner lumen surface surround through bonding agent, is provided with on the surface and is coated with by epoxy resin and curing agent the glass fiber layer of cloth sealed being positioned at the magnet steel outside described groove.
The pole polarity of the magnet steel on forward and backward hub halves surface of internal cavity between adjacent two insulation blend stops is identical; Pole polarity between adjacent two blocks of magnet steel that first half hub inner lumen is separated by insulation blend stop is on the surface contrary, pole polarity between adjacent two blocks of magnet steel that later half hub inner lumen is separated by insulation blend stop is on the surface contrary, and the pole polarity of described first half wheel hub upper magnetic steel is identical with the pole polarity of the symmetrically arranged later half wheel hub upper magnetic steel of its herringbone.
The invention provides a kind of method for assembling described outer rotor permanent magnet generator magnetic pole, comprising the following steps:
A, the magnet steel do not magnetized to be symmetrically arranged amongst on the surface of internal cavity of forward and backward hub halves by herringbone, and to adopt insulation blend stop to be fixed on the surface of internal cavity of forward and backward hub halves by the described magnet steel setting-in do not magnetized;
B, the described magnet steel do not magnetized fixedly is completed after, adopt magnet charger to magnetize process to the described magnet steel do not magnetized.
The present invention is further comprising the steps of after b step:
C, lay glass fiber layer of cloth on the surface being positioned at the magnet steel outside the groove that adjacent two insulation blend stops and hub inner lumen surfaces surround, employing vacuum perfusion process is also bondd and encapsulation process to the magnet steel magnetized by epoxy resin and curing agent.
The present invention carry out b step magnetize process time, by identical for the pole polarity of the magnet steel between two insulation blend stops adjacent on forward and backward hub halves surface of internal cavity, by contrary by the pole polarity between adjacent two blocks of magnet steel of separating of insulation blend stop on the surface at first half hub inner lumen, by contrary by the pole polarity between adjacent two blocks of magnet steel of separating of insulation blend stop on the surface at later half hub inner lumen, by identical for the pole polarity of symmetrically arranged to the pole polarity of described first half wheel hub upper magnetic steel and its herringbone later half wheel hub upper magnetic steel.
After adopting above-mentioned field structure and assembly method, the present invention has following beneficial effect:
The field structure strict guarantee of the present invention uniformity consistency of air gap, and have that floating voltage consistency is good, torque pulsation is low, simple and compact for structure, easy to process and the plurality of advantages such as reliable are installed.Generator floating voltage is compared traditional structure and is reduced by 5%, and the reduction of electromagnetic torque pulsation is convenient to Current Control on the one hand, improves control precision, also reduces the vibration & noise of motor on the other hand.
Pole polarity between adjacent two blocks of magnet steel that first half hub inner lumen is separated by insulation blend stop is on the surface contrary, pole polarity between adjacent two blocks of magnet steel that later half hub inner lumen is separated by insulation blend stop is on the surface contrary, and the pole polarity of described first half wheel hub upper magnetic steel is identical with the pole polarity of the symmetrically arranged later half wheel hub upper magnetic steel of its herringbone.Adopt such structure, the torque pulsation of motor can be made and vibrating noise is lower, floating voltage fluctuation less.
Traditional first being magnetized by magnet steel is fixed in the scheme of magnet steel again, because each magnetic pole is all made up of tens blocks of magnet steel, by bonding magnetic steel frock, every block magnet steel need be installed fix in position, cause inefficiency, generally be made up of several thousand blocks of magnet steel for high-power permanent magnet motor magnetic pole, magnetic pole is in place the needs time of tens days, and the situation of magnet steel breakage also easily occurs, simultaneously because the magnet steel of same polarity in installation process repels each other, easily there is magnet steel and to fly out the danger of hurting sb.'s feelings.And the magnet steel do not magnetized first is fixed on hub inner lumen on the surface by the present invention, the overall assembly method magnetized substantially increases operating efficiency on the one hand again, often fill a magnetic pole and only need a few minutes, magneto for high-power tens poles can complete for one day, the stability that simultaneously magnetizes is high, and is convenient to detect pole flux after magnetizing, and ensures the consistency of magnetic flux, on the other hand magnet steel also not cracky, and effectively prevent same polarity magnet steel in installation process and to repel each other the generation of casualty accident of flying out.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is a kind of structural representation of outer rotor permanent magnet generator magnetic pole structure of the present invention.
Fig. 2 is a kind of structural representation that insulation blend stop and magnet steel are arranged on first half hub inner lumen surface.
Fig. 3 is the enlarged diagram at I place in Fig. 2.
Fig. 4 is a kind of generalized section of first half wheel hub in the present invention.
Fig. 5 is a kind of generalized section of later half wheel hub in the present invention.
Fig. 6 is that in the present invention, forward and backward half wheel hub is bolted a kind of generalized section when forming whole wheel hub.
Fig. 7 is a kind of schematic perspective view of magnet steel in the present invention.
Fig. 8 is the schematic front view of magnet steel in Fig. 7.
Fig. 9 is the generalized section along A-A line in Fig. 8.
Figure 10 is the elevational schematic view of magnet steel in Fig. 7.
Figure 11 is the schematic front view of blend stop of insulating in the present invention.
Figure 12 is the elevational schematic view of blend stop of insulating in Figure 11.
Figure 13 is the schematic side view of blend stop of insulating in Figure 11.
Figure 14 is a kind of scheme of installation of insulation blend stop and magnet steel.
Embodiment
See a kind of outer rotor permanent magnet generator magnetic pole structure shown in Fig. 1 to Figure 14, comprise some blocks of magnet steel 1, described magnet steel 1 is fixedly mounted in the inner chamber of permanent magnet generator wheel hub 2, every block magnet steel 1 is all in having, outer arcuate face 1-1, the tile shape of 1-2, in described magnet steel 1, outer arcuate face 1-1, 1-2 is processed into the arcwall face corresponding to wheel hub 2 surface of internal cavity, the both sides processing forming V-shape scarf 1-3 of described magnet steel 1, the longitudinal cross-section parallelogram of magnet steel 1, described wheel hub 2 is by front, rear hub halves 2-1, 2-2 assembles, this field structure also comprises the insulation blend stop 3 that several strips are processed by insulating material, the V-arrangement inclined-plane 3-1 matched with described magnet steel 1 scarf is processed in the both sides of each insulation blend stop 3, before described insulation blend stop 3 is fixedly mounted on along the spaced certain distance of wheel hub 2 circumferencial direction, rear hub halves 2-1, on the surface of internal cavity of 2-2, described magnet steel 1 setting-in is fixed in the groove that adjacent two insulation blend stops 3 and wheel hub 2 surface of internal cavity surround, setting-in is fixed on the magnet steel 1 that magnet steel on first half wheel hub 2-1 surface of internal cavity 1 and setting-in be fixed on later half wheel hub 2-2 surface of internal cavity and is symmetrical arranged in herringbone.In the present invention, inside and outside arcwall face 1-1, the 1-2 of magnet steel 1 are processed into wheel hub 2 surface of internal cavity, stator outer surface with the size of radian, therefore the strict guarantee uniformity consistency of air gap.
As shown in Figure 6, to be assembled by bolt 4 by forward and backward hub halves 2-1,2-2 and become an Integral hub 2, namely form generator amature.Because forward and backward hub halves 2-1,2-2 can separate independent mounting magnetic steel 1 and insulation blend stop 3, therefore substantially increase operating efficiency.As shown in Fig. 1 ~ 3 and Figure 11 ~ 13, each insulation blend stop 3 is processed with four equidistant countersunk head through hole 3-2, described insulation blend stop 3 is fixedly mounted on forward and backward hub halves 2-1 by the soket head cap screw 5 through described countersunk head through hole 3-2, on the surface of internal cavity of 2-2, adding man-hour, the radial screw suitable with described screw 5 is processed with at wheel hub 2 surface of internal cavity, not shown in the figures.As shown in Fig. 2,3 and Fig. 4 ~ 6, described magnet steel 1 setting-in is also fixed in the groove that adjacent two insulation blend stops 3 and wheel hub 2 surface of internal cavity surround through bonding agent, is provided with the glass fiber layer of cloth 6 being coated with envelope by epoxy resin and curing agent at the magnet steel 1 be positioned at outside described groove on the surface.In the present invention, because the conjunction surface mutually coincide is processed in the both sides of insulation blend stop 3 and magnet steel 1, magnet steel 1 setting-in is also fixed in described groove through bonding agent, all magnet steel 1 connect into as a whole by glass fiber layer of cloth 6, therefore ensure that rotor is under the state of running up, magnet steel can be fixed reliably, stable and reliable working performance.
As shown in Figure 1, the pole polarity of the magnet steel 1 on forward and backward hub halves 2-1,2-2 surface of internal cavity between adjacent two insulation blend stops 3 is identical, and such as, magnet steel 1 between adjacent two insulation blend stops 3 is all N pole or is all S pole.Pole polarity between adjacent two blocks of magnet steel 1 that first half wheel hub 2-1 surface of internal cavity is separated by insulation blend stop 3 is contrary, and such as, when blend stop 3 left side of insulating is N pole, then the right is S pole.Pole polarity between adjacent two blocks of magnet steel 1 that later half wheel hub 2-2 surface of internal cavity is separated by insulation blend stop 3 is contrary, and such as, when blend stop 3 left side of insulating is N pole, then the right is S pole.The pole polarity of described first half wheel hub 2-1 upper magnetic steel 1 is identical with the pole polarity of the symmetrically arranged later half wheel hub 2-2 upper magnetic steel 1 of its herringbone, when first half wheel hub 2-1 upper magnetic steel 1 is as shown in Figure 1 N pole, then symmetrically arranged later half wheel hub 2-2 upper magnetic steel 1 is also N pole with its herringbone, vice versa.Adopt such structure, the torque pulsation of motor can be made and vibrating noise is lower, floating voltage fluctuation less.
The present invention also provides a kind of method for assembling described outer rotor permanent magnet generator magnetic pole, comprises the following steps:
A, the magnet steel 1 do not magnetized to be symmetrically arranged amongst on the surface of internal cavity of forward and backward hub halves 2-1,2-2 by herringbone, and to adopt insulation blend stop 3 to be fixed on the surface of internal cavity of forward and backward hub halves 2-1,2-2 by described magnet steel 1 setting-in do not magnetized;
B, the described magnet steel 1 do not magnetized fixedly is completed after, adopt magnet charger to magnetize process to the described magnet steel 1 do not magnetized.
The present invention preferably includes following steps after b step:
C, lays glass fiber layer of cloth 6 on the surface being positioned at the magnet steel 1 outside the groove that adjacent two insulation blend stops 3 and wheel hub 2 surface of internal cavity surround, then adopt the vacuum perfusion process of routine and by epoxy resin and curing agent, the magnet steel 1 magnetized bondd and encapsulation process.
The present invention carry out b step magnetize process time, preferably by front, rear hub halves 2-1, the pole polarity of the magnet steel 1 on 2-2 surface of internal cavity between adjacent two insulation blend stops 3 is identical, by contrary by the pole polarity between adjacent two blocks of magnet steel 1 of separating of insulation blend stop 3 on first half wheel hub 2-1 surface of internal cavity, by contrary by the pole polarity between adjacent two blocks of magnet steel 1 of separating of insulation blend stop 3 on later half wheel hub 2-2 surface of internal cavity, by identical for the pole polarity of symmetrically arranged to the pole polarity of described first half wheel hub 2-1 upper magnetic steel 1 and its herringbone later half wheel hub 2-2 upper magnetic steel 1.The present invention is when assembling, and the magnet steel 1 that do not magnetize on forward and backward hub halves 2-1,2-2 surface of internal cavity is magnetized to each magnetic pole fast by magnet charger after installing respectively and fixedly completing, thus ensure that polarity and the effect that magnetizes.After having magnetized, forward and backward hub halves 2-1,2-2 are connected by bolt 4 can become an Integral hub 2, namely forms generator amature.
Field structure of the present invention, structure is simple on the one hand, easy to process, shortens man-hour, improves operating efficiency, and air gap is even on the other hand, and torque pulsation is low, and floating voltage fluctuation is little, and control simple, vibrating noise is low.
Claims (4)
1. an outer rotor permanent magnet generator magnetic pole structure, comprise some blocks of magnet steel (1), described magnet steel (1) is fixedly mounted in the inner chamber of permanent magnet generator wheel hub (2), every block magnet steel (1) is all in having, outer arcuate face (1-1, tile shape 1-2), in described magnet steel (1), outer arcuate face (1-1, 1-2) be processed into and the corresponding arcwall face of wheel hub (2) surface of internal cavity, both sides processing forming V-shape scarf (1-3) of described magnet steel (1), it is characterized in that: the longitudinal cross-section parallelogram of magnet steel (1), described wheel hub (2) is by front, rear hub halves (2-1, 2-2) assemble into as a whole by bolt (4), this field structure also comprises several strips insulation blend stop (3), the V-arrangement inclined-plane (3-1) matched with described magnet steel (1) scarf is processed in the both sides of each insulation blend stop (3), before described insulation blend stop (3) is fixedly mounted on along the spaced certain distance of wheel hub (2) circumferencial direction by screw (5), rear hub halves (2-1, on surface of internal cavity 2-2), described magnet steel (1) setting-in is also fixed in the groove that adjacent two insulation blend stop (3) surround with wheel hub (2) surface of internal cavity through bonding agent, be provided with the glass fiber layer of cloth (6) being coated with envelope by epoxy resin and curing agent on the surface being positioned at the magnet steel outside described groove (1), setting-in is fixed on the magnet steel (1) that magnet steel (1) on first half wheel hub (2-1) surface of internal cavity and setting-in be fixed on later half wheel hub (2-2) surface of internal cavity and is symmetrical arranged in herringbone, the pole polarity of the magnet steel (1) on forward and backward hub halves (2-1,2-2) surface of internal cavity between adjacent two insulation blend stop (3) is identical, pole polarity between adjacent two pieces of magnet steel (1) that first half wheel hub (2-1) surface of internal cavity is separated by insulation blend stop (3) is contrary, pole polarity between adjacent two pieces of magnet steel (1) that later half wheel hub (2-2) surface of internal cavity is separated by insulation blend stop (3) is contrary, and the pole polarity of described first half wheel hub (2-1) upper magnetic steel (1) is identical with the pole polarity of its herringbone symmetrically arranged later half wheel hub (2-2) upper magnetic steel (1).
2., for assembling a method for outer rotor permanent magnet generator magnetic pole structure described in claim 1, it is characterized in that: comprise the following steps:
A, the magnet steel do not magnetized (1) is symmetrically arranged amongst forward and backward hub halves (2-1 by herringbone, on surface of internal cavity 2-2), and adopt insulation blend stop (3) to be fixed on the surface of internal cavity of forward and backward hub halves (2-1,2-2) by described magnet steel (1) setting-in do not magnetized;
B, the described magnet steel (1) do not magnetized fixedly is completed after, adopt magnet charger to magnetize process to the described magnet steel (1) do not magnetized.
3. assembly method according to claim 2, is characterized in that: further comprising the steps of after b step:
C, lays glass fiber layer of cloth (6) on the surface being positioned at the magnet steel (1) outside the groove that adjacent two insulation blend stop (3) surround with wheel hub (2) surface of internal cavity, employing vacuum perfusion process is also bondd and encapsulation process to the magnet steel magnetized (1) by epoxy resin and curing agent.
4. the assembly method according to Claims 2 or 3, it is characterized in that: carry out b step magnetize process time, by front, rear hub halves (2-1, the pole polarity of the magnet steel (1) 2-2) on surface of internal cavity between adjacent two insulation blend stop (3) is identical, pole polarity between adjacent two pieces of magnet steel (1) that will be separated by insulation blend stop (3) on first half wheel hub (2-1) surface of internal cavity is contrary, pole polarity between adjacent two pieces of magnet steel (1) that will be separated by insulation blend stop (3) on later half wheel hub (2-2) surface of internal cavity is contrary, by identical with the pole polarity of its herringbone symmetrically arranged later half wheel hub (2-2) upper magnetic steel (1) for the pole polarity of described first half wheel hub (2-1) upper magnetic steel (1).
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| CN201310194712.7A CN103312067B (en) | 2013-05-23 | 2013-05-23 | A kind of outer rotor permanent magnet generator magnetic pole structure and assembly method |
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| CN201310194712.7A CN103312067B (en) | 2013-05-23 | 2013-05-23 | A kind of outer rotor permanent magnet generator magnetic pole structure and assembly method |
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| WO2016026214A1 (en) * | 2014-08-21 | 2016-02-25 | 江西工埠机械有限责任公司 | Low speed and high torque electric motor outer rotor, electric motor and related crane |
| CN104158373B (en) * | 2014-08-21 | 2017-06-13 | 江西工埠机械有限责任公司 | External rotor electric machine |
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| CN104362813B (en) * | 2014-12-08 | 2017-03-22 | 上海电气集团上海电机厂有限公司 | Magnetic steel mounting method for 50kW ultrahigh permanent magnet generator rotor |
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| CN106787319B (en) * | 2016-12-29 | 2019-10-25 | 北京金风科创风电设备有限公司 | Rotor magnetic steel fixing structure and method |
| EP3355453A1 (en) * | 2017-01-31 | 2018-08-01 | Siemens Aktiengesellschaft | Production method and disassembly method for a rotary permanently excited electrical machine |
| CN112054614B (en) | 2019-06-06 | 2022-12-27 | 北京金风科创风电设备有限公司 | Whole-pole magnetic pole module and rotor for permanent magnet motor |
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