CN102280983B - Permanent magnet generator with two coaxial outer rotors and coreless coil - Google Patents
Permanent magnet generator with two coaxial outer rotors and coreless coil Download PDFInfo
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- CN102280983B CN102280983B CN201110202864.8A CN201110202864A CN102280983B CN 102280983 B CN102280983 B CN 102280983B CN 201110202864 A CN201110202864 A CN 201110202864A CN 102280983 B CN102280983 B CN 102280983B
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Abstract
The invention discloses a permanent magnet generator with two coaxial outer rotors and a coreless coil, belonging to the technical field of new energy power supply devices. The permanent magnet generator comprises a stator, and the two outer rotors are coaxially sleeved outside the stator and can be matched with a vertical or horizontal wind-driven generator. The coaxial permanent magnet generator is characterized in that stator windings are arranged at two ends of the stator in shape of a cylinder, the center of an inner disc is provided with a hole for fixing a main shaft, the main shaft is supported by bearings in the two outer rotors, permanent magnets symmetric with the stator windings are arranged in the circle area of the inner walls of the outer rotors and rotate along with the outer rotors, and a lead is respectively connected with the output ends of the stator windings to output. According to a new scheme of utilizing a new technology that multiple permanent magnets are longitudinally arranged and multiple or multi-layer coreless coils are stacked, running the secondary utilization of wind energy airflow in a working condition normal state and the mutual facilitation of two wind wheels after combination, and designing that a single bearing supports the outer rotors to run to generate electricity, thus the output power of the wind-driven generator is increased in times, and the wind-driven generator can regularly start generating electricity under the condition of the gentle breeze speed less than 1m/s.
Description
Technical field
The present invention relates to the coaxial iron-less core coil permanent magnet generator of a kind of double external rotor, belong to clean energy resource technical field of wind power generating equipment, particularly a kind of and vertical or high efficiency wind-driven generator that horizontal wind power generator is supporting.
Background technology
The main frame of traditional wind-driven generator is made up of a stator and a rotor, and ubiquity the defects such as volume is large, quality heavy, cost is high, noise is large, occupation of land space is large, wind energy utilization is low; Recently there is dealer to appreciate examination, on the stator case of generator and rotor, the wind wheel that blade rotation direction is contrary is set respectively, make stator and rotor rotate to improve generating efficiency by rightabout separately, weak point is, stator coil is followed housing rotation, output lead must pass through electroconductive elastic sheet or conducting slip ring transition, just as the brush carrier in direct current machine, can produce the defects such as frictional resistance, spark, rapid wear, in relatively high power generator, problem is just more outstanding.
Summary of the invention
The object of the invention is to overcome above-mentioned defect, realize by the following technical solutions.
The coaxial iron-less core coil permanent magnet generator of a kind of double external rotor, it comprises stator, outer coaxial sheathed two external rotors of stator, can be with vertical or horizontal wind power generator is supporting: the stator 3 of a cylinder, stator winding 6 is established at two ends, 601, inner disc center drilling is fixing for main shaft 4, main shaft is by two external rotors 1, bearings in 101, the permanent magnet 2 symmetrical with stator winding is set in the area of a circle of external rotor inwall, 201, between permanent magnet and stator winding, establish air gap, permanent magnet rotates with external rotor, the wire 7 pipeline output that connecting stator winding is interior through main shaft or stator is peripheral respectively.
Described stator winding 6 and 601 is iron-less core coil winding, turned to the coil of circle, square or hexagonal body by enamelled wire or sticky enamelled wire, 20+F the horizontal annular of coil is connected into 1 group of winding, one 1 group of phase, threephase generator is 3 groups of longitudinal arrangements or 3k group winding, is uniformly distributed and is fixed in stator 3 by electrical phase angle; Or, by multiple coil longitudinal arrangements, form 1 loop piece by mode connected in series or in parallel, or directly turn to one or more coils and become 1 loop piece by longitudinal arrangement; 20+F loop piece is serially connected in the loop piece winding of 1 layer of annular, or directly turns to the loop piece winding of 1 layer of annular of 20+F loop piece series connection, 1 layer of a phase, and three phase electric machine is 3 layers or 3k layer, is uniformly distributed and is fixed in stator 3 by electrical phase angle; The head of above-mentioned three phase windings, tail end press Y or △ shape connects, and is drawn by wire 7; Wherein F or K are natural number.
Described external rotor 1, 101 are processed or split type processing by metal material integral type, split typely add man-hour: metallic plate is processed into end cap, end cap center arranges bearing 5, inside end cap, in the area of a circle, establish two circle circular grooves, in each circular groove, establish several screw holes, metal tube is dimensioned to two diameter differences by circular groove, torus equal in length, screw is fixed by the screw hole in end cap and torus, wherein the external wall of great circle inner wall of ring body and small circle ring arranges respectively permanent magnet 2, 201, distinguished is that the position that bearing 5 is set in end cap is drawn close to the alignment of shafts separately, be located at the centre position of roundlet inner wall of ring body, to improve the dynamic equilibrium degree of external rotor, in external rotor, establish separately a bearing operation, frictional resistance while having reduced rotation, make wind wheel be able to turn round under gentle breeze state, further improve generating effect.
Described permanent magnet 2, 201 is Xi Tu Nd iron boron permanent magnetism, samarium cobalt permanent magnet or Al-Ni-Co permanent magnet, make cuboid or long watt shape of solids or consist of a cuboid by three fritter square longitudinal arrangements, 20+H piece permanent magnet composition one circle, wherein H is natural number, the polarity of the magnetic field of permanent magnet: press S-N-S-N ... the order of S or press S-N-magnetic inductive block-N-S-magnetic inductive block-S-N-magnetic inductive block-N-S ... the order of S is along the circumferential direction uniformly distributed circular arrangement and is fixed on external rotor 1, in 101 the area of a circle, every two groups of permanent magnets are set up in parallel at stator coil 6, 601 both sides of facing mutually.
Described main shaft 4 is by stainless steel tube, seamless steel pipe or round steel are processed into, endoporus passes through for wire 7, main shaft external diameter is provided with and can supplies bearing 5, the fixing protruding gear backer of stator 3, accurately to control location dimension and the air gap of above-mentioned each parts, circlip groove and bearing cap are established in main shaft two ends, and screw is fixed with external rotor respectively through bearing cap, bearing 5 is positioned between bearing cap and packing ring, with restrictive axial vibration; While making the coaxial iron-less core coil permanent magnet generator of horizontal double external rotor, main shaft 4 is processed into for round steel.
Described stator 3 is made cylindrical shape by metal and insulating material, inner disc center drilling passes fixing for main shaft 5, remainder is established several lightening holes, and with weight reduction, stator winding 6,601 is fixed on the two ends of cylinder by bobbin or epoxy resin casting; While making the coaxial iron-less core coil permanent magnet generator of horizontal double external rotor, cylinder encloses the round metal ring body that a circle protrudes outward, is provided with for the external screw hole of installing and using in torus.
Between described permanent magnet 2,201 and stator winding 6,601, be provided with the width of air gap, need set according to generator power size, be chosen as 0.2mm～6mm scope, the higher air gap of processing precise degree is less, the less delivery efficiency that improves generator that is more beneficial to of air gap.
The exposed parts of above-mentioned external rotor 1,101 shells is established every magnetosphere with protection and is prevented that magnetic field from leaking.
Described can be supporting with vertical wind driven generator, one of them scheme is: the first wind wheel 9, the second wind wheel 901 are the spherical wind wheel of turbine type, by the first wind wheel 9, or the first wind wheel 9 of a power-assist wind wheel 902 is established at top, be connected with the first external rotor 1 of the coaxial iron-less core coil permanent magnet generator of double external rotor, the second external rotor 101 is connected with the second wind wheel 901, wherein, multiple blades in the first wind wheel 9 are made the spherical wind wheel of the turbine type turning clockwise, multiple blades in the second wind wheel 901 are made the spherical wind wheel of the turbine type being rotated counterclockwise, the volume of the second wind wheel is less than the first wind wheel, be arranged on the inside of the first wind wheel 9, stator 3 is fixing with main shaft 4, main shaft is by the first external rotor 1, bearing 5 in the second external rotor 101 supports, main shaft is fixed by the cross in extension pipe and support 10, support 10 is fixed on roof, air duct empty in support is connected with the ventilating opening on roof, room ventilation air-flow is risen and is promoted the second wind wheel 901 by being rotated counterclockwise by the air duct of support 10 interior skies, the space of air-flow between multiple arc shaped blades of formation wind wheel, discharge and form vortex acceleration rotation rising, the exhaust airstream of rotation acts on the multiple arc shaped blades in the first wind wheel 9, promoting the first wind wheel rotates clockwise, two wind wheels produce interactive effect, drive the first external rotor 1 and second external rotor 101 of integral shaft generator to generate electricity according to different direction rotations, because above-mentioned two wind wheel direction of rotation are contrary, discharge directions when changing and having isolated outside room ventilation air-flow discharge chamber, make outdoor airflow can only promote wind wheel rotation, can not directly enter indoor air channel, two kinds of defects that air-flow is repealed by implication when having overcome outdoor nature wind-force and being greater than indoor ascending air, improved utilance and the performance of ventilating of wind energy, the interactive effect producing by two kinds of wind wheels, strengthens more than one times the efficiency of generator.
Described and horizontal wind power generator supports the use, and one of them scheme is: the first wind wheel, the second wind wheel are the multiblade wind wheel of 2～8 fan blades; The first wind wheel 9, be connected with the first external rotor 1 of the coaxial iron-less core coil permanent magnet generator of double external rotor, the second external rotor 101 is connected with the second wind wheel 901, the peripheral torus protruding of stator 3 is connected with rolling disc 11 by screw hole, rolling disc lower end and wind-driven generator pillar 12 are fixing, the wire 7 respectively output of connecting stator winding 6,601 is drawn through the pipeline in pillar 12, peripheral torus top or the arranged outside rain cover 8 protruding of stator 3, the tail end of main shaft 4 connects wind top 13 by extension bar; Wherein, blade in the first wind wheel 9 make dextrorotation to, blade in the second wind wheel 901 is made counterclockwise rotation direction, when promoting the first wind wheel 9, nature air-flow rotates clockwise, it discharges airflow function on the blade of multiple counterclockwise rotation directions of the second wind wheel 901, promote the second wind wheel by being rotated counterclockwise, two wind wheels produce interactive effect, drive respectively the first external rotor 1 of integral shaft generator and the second external rotor 101 to generate electricity according to different direction rotations; Make generator efficiency multiplication.
Beneficial effect: one. adopt the innovative techniques scheme of polylith permanent magnet longitudinal arrangement and many or multilayer line iron-less core coil stack design, break through traditional a pair of magnetic pole and joined the boundary that a coil and rotor are joined a stator, increased substantially generating efficiency.Two. use secondary utilization and the two kind wind wheels of wind energy air-flow under operating mode normality to combine the interactive facilitation after installing, the power output of equivalent diameter motor is improved more than 1 times, 3. be designed to single-bearing and support external rotor running generating, the function that makes to generate electricity starts generating in the situation that of gentle breeze wind speed < 1m/s; Reach the target that volume is little, efficiency is high, safe and reliable.
Brief description of the drawings
Longitudinal cross-sectional schematic of the 1. 1 kinds of coaxial iron-less core coil permanent magnet generator of double external rotor structures of accompanying drawing.
The 2. 1 kinds of coaxial iron-less core coil permanent magnet generator of horizontal double external rotor structure cross-sectional schematic of accompanying drawing.
The coaxial iron-less core coil permanent magnet generator cross-sectional schematic of 3. 1 kinds of parts processing double external rotors of accompanying drawing.
4. 1 kinds of iron-less core coils of accompanying drawing are arranged and are put the AA cross-sectional schematic of row in generator.
5. 1 kinds of iron-less core coil monolithics of accompanying drawing are arranged schematic diagram.
6. 1 kinds of vertical wind driven generators of accompanying drawing support the use scheme schematic diagram.
The matching used scheme schematic diagram of 7. 1 kinds of horizontal wind power generators of accompanying drawing.
Embodiment
In figure: 1. the first external rotor, 101. second external rotors, 2. the first permanent magnet, 201. second permanent magnets, 3. stator, 4. main shaft, 5. bearing, 6. the first stator winding, 601. second stator winding, 7. wires.
Following examples do not form places restrictions on any of protection range of the present invention.
Embodiment: longitudinal cross-sectional schematic of the 1. 1 kinds of coaxial iron-less core coil permanent magnet generator of double external rotor structures of accompanying drawing.In figure: stator 3 is by metal, insulating material is made cylindrical shape, inner disc center drilling passes fixing for main shaft 4, remainder arranges several lightening holes, stator winding 6, 601 are cast and are fixed on the two ends up and down of cylinder by bobbin or epoxy resin, main shaft 4 is supported by the bearing 5 in two external rotors, the some circle permanent magnets 2 symmetrical with stator winding are set in the area of a circle of external rotor inwall, 201, form a cuboid by three fritter square longitudinal arrangements, some cuboid composition 1 circle permanent magnets, stator winding 6, 601 are connected into 1 group by the horizontal annular of several coils, a stator winding of 3 groups of winding longitudinal arrangement compositions, permanent magnet 2, 201 with stator winding 6, between 601, leave air gap, permanent magnet rotates with external rotor, wire 7 respectively connecting stator winding is drawn formation through the pipeline in main shaft 4, wherein main shaft two ends are provided with circlip groove and bearing cap, and screw is fixed with external rotor respectively through bearing cap, and on card, back-up ring is located bearing 5, with restrictive axial vibration.
Embodiment: the 2. 1 kinds of coaxial iron-less core coil permanent magnet generator of horizontal double external rotor structure cross-sectional schematic of accompanying drawing.In figure: stator 3 is made cylinder by metal and insulating material, inner disc center drilling passes fixing for main shaft 4, remainder arranges several lightening holes, stator winding 6, 601 are cast and are fixed on the two ends, left and right of cylinder by bobbin or epoxy resin, in the peripheral torus protruding of stator, be provided with the screw hole for external installation, main shaft 4 is supported by the bearing 5 in two external rotors, external rotor 1, in the area of a circle of 101 inwalls, arrange and stator winding 6, 601 symmetrical some circle permanent magnets 2, 201, form 1 circle permanent magnet by some cuboids, stator winding is made up of three layers of loop piece loop piece winding, between permanent magnet and stator winding, leave air gap, permanent magnet rotates with external rotor, wire 7 respectively connecting stator winding output is drawn formation through the pipeline of stator periphery, wherein main shaft 4 two ends are provided with circlip groove and bearing cap, and screw is fixed with external rotor respectively through bearing cap, and on card, back-up ring is located bearing, main shaft 4 is processed into for round steel.
Embodiment: the coaxial iron-less core coil permanent magnet generator cross-sectional schematic of 3. 1 kinds of parts processing double external rotors of accompanying drawing.Structure in figure and accompanying drawing 1,2 is basic identical, difference is, external rotor 1,101 housing parts processings, split typely add man-hour: metallic plate is processed into end cap, end cap center arranges bearing 5, inside end cap, in the area of a circle, establish two circle circular grooves, in each circular groove, establish several screw holes, metal tube is dimensioned to two diameter differences by circular groove, torus equal in length, screw is fixed by the screw hole in end cap and torus, and wherein the external wall of great circle inner wall of ring body and small circle ring is established respectively permanent magnet.
Embodiment: 4. 1 kinds of iron-less core coils of accompanying drawing are arranged and put the AA cross-sectional schematic of row in generator.In figure: the great circle ring body in 101. second external rotors, 1011. roundlet ring body, the permanent magnet of 201. second external rotor great circle ring bodies, the permanent magnet of 2011. second external rotor roundlet ring bodies, ground floor winding in 6011. second stator winding 601, second layer winding in 6012. second stator winding 601, the 3rd layer of winding in 6013. second stator winding 601.
Embodiment: 1 loop piece of 5. 1 kinds of iron-less core coils of accompanying drawing is arranged schematic diagram.In figure: the 1st loop piece in 6011. ground floor windings 6011, the 1st loop piece in 6012. second layer windings 6012, the 1st loop piece in 6013. the 3rd layers of winding 6013, each circle sheet is made up of 2 coil series connection, the initiating terminal that wherein a, b, tri-terminals of c are above-mentioned 3 loop piece, 3 line tails 1., 2., are 3. linked in sequence respectively or 3 loop piece below coiling ...
Embodiment: shown in accompanying drawing 6, a kind of vertical wind driven generator supports the use scheme schematic diagram.In figure: the first wind wheel 9, the second wind wheel 901 are the spherical wind wheel of turbine type, be provided with the first wind wheel 9 of power-assist wind wheel 902 by a top, be connected with the first external rotor 1 of the coaxial iron-less core coil permanent magnet generator of double external rotor, the second external rotor 101 is connected with the second wind wheel 901, wherein, multiple blades in the first wind wheel 9 are made the spherical wind wheel of turbine type of the exhaust that turns clockwise, multiple blades in the second wind wheel 901 are made the spherical wind wheel of turbine type that is rotated counterclockwise exhaust, the second wind wheel is located at the inside of the first wind wheel 9, stator 3 is fixing with main shaft 4, main shaft is by the first external rotor 1, two bearings 5 in the second external rotor 101 support, main shaft is fixed by the cross in extension pipe and support 10, support is fixed on roof, air duct empty in support is connected with the ventilating opening on roof.
Embodiment: shown in accompanying drawing 7, the matching used scheme schematic diagram of a kind of horizontal wind power generator.The first wind wheel, the second wind wheel are the multiblade wind wheel of 4 fan blades; The first wind wheel 9, be connected with the first external rotor 1 of the coaxial iron-less core coil permanent magnet generator of double external rotor, the second external rotor 101 is connected with the second wind wheel 901, the peripheral round metal ring body protruding of stator 3 is connected with directional rotating dish 11 by screw hole, rolling disc lower end and wind-driven generator pillar 12 are fixing, the wire 7 respectively output of connecting stator winding 6,601 passes the pipeline out-put supply in pillar, peripheral torus top or the arranged outside rain cover 8 protruding of stator 3, the tail end of main shaft 4 connects wind top 13 by extension bar; Wherein, the blade in the first wind wheel 9 make dextrorotation to, the blade in the second wind wheel 901 is made counterclockwise rotation direction.
The exposed parts of above-mentioned external rotor shell is established every magnetosphere with protection and is prevented that magnetic field from leaking.
The coaxial iron-less core coil permanent magnet generator of double external rotor because volume is little, lightweight, efficiency is high, power output is large, safe and reliable, can be widely used in various wind-powered electricity generations place, there is wide range of application and development potentiality.
Claims (4)
1. the coaxial iron-less core coil permanent magnet generator of double external rotor, comprise the stator (3) of a cylinder, the first stator winding (6) and the second stator winding (601) are established respectively in stator (3) two ends, stator inner disc center drilling is fixing for main shaft (4), main shaft (4) is by the bearings in external rotor, first permanent magnet (2) symmetrical with the first stator winding is set in the first external rotor (1) inwall area of a circle, second permanent magnet (201) symmetrical with the second stator winding is set in the second external rotor (101) inwall area of a circle, between permanent magnet and stator winding, establish air gap, permanent magnet rotates with external rotor, wire (7) connecting stator winding is through the pipeline output of inner hole of spindle or stator periphery, be characterised in that, the position that bearing (5) is set in end cap for outer rotor is drawn close to the alignment of shafts separately, be located at the centre position of roundlet inner wall of ring body, to improve the dynamic equilibrium degree of external rotor, in two external rotors, establish separately a bearing operation, the function that makes to generate electricity starts the in the situation that of gentle breeze wind speed < 1m/s, when supporting with vertical wind driven generator: the first wind wheel of being established a power-assist wind wheel (902) by the first wind wheel (9) or top is connected with the first external rotor (1), the second external rotor (101) is connected with the second wind wheel (901), two wind wheels are according to different direction rotation generatings, producing interactive effect strengthens the efficiency of generator.
2. the coaxial iron-less core coil permanent magnet generator of double external rotor, comprise the stator (3) of a cylinder, the first stator winding (6) and the second stator winding (601) are established respectively in stator (3) two ends, stator inner disc center drilling is fixing for main shaft (4), main shaft (4) is by the bearings in external rotor, first permanent magnet (2) symmetrical with the first stator winding is set in the first external rotor (1) inwall area of a circle, second permanent magnet (201) symmetrical with the second stator winding is set in the second external rotor (101) inwall area of a circle, between permanent magnet and stator winding, establish air gap, permanent magnet rotates with external rotor, wire (7) connecting stator winding is through the pipeline output of inner hole of spindle or stator periphery, be characterised in that, the position that bearing (5) is set in end cap for outer rotor is drawn close to the alignment of shafts separately, be located at the centre position of roundlet inner wall of ring body, to improve the dynamic equilibrium degree of external rotor, in two external rotors, establish separately a bearing operation, the function that makes to generate electricity starts the in the situation that of gentle breeze wind speed < 1m/s, when supporting with horizontal wind power generator: the first wind wheel (9) is connected with first external rotor (1) of the coaxial iron-less core coil permanent magnet generator of double external rotor, the second external rotor (101) is connected with the second wind wheel (901), the peripheral torus protruding of stator (3) is connected with rolling disc (11) by screw hole, rolling disc lower end and wind-driven generator pillar (12) are fixing, peripheral torus top or the arranged outside rain cover (8) protruding of stator (3), the tail end of main shaft (4) connects wind rudder (13) by extension bar, two wind wheels drive respectively first external rotor (1) of integral shaft generator and the second external rotor (101) to generate electricity according to different direction rotations.
3. according to the coaxial iron-less core coil permanent magnet generator of double external rotor described in claim 1 or 2, feature is: described the first stator winding (6) and the second stator winding (601) are iron-less core coil, turned to the coil of circle, square or hexagonal body by enamelled wire or sticky enamelled wire, 20+F coil is laterally along the circumferential direction uniformly distributed and is connected into 1 group of annular winding, 1 group of output of one phase be single-phase generator, threephase generator is 3 groups of longitudinal arrangements or 3k group winding, is along the circumferential direction uniformly distributed and is fixed in stator (3) by electrical phase angle; The head of three phase windings, tail end press Y or △ shape connects, and is drawn by wire (7); Wherein F or K are natural number.
4. according to the coaxial iron-less core coil permanent magnet generator of double external rotor described in claim 1 or 2, feature is: described main shaft (4) is processed into by stainless steel tube, seamless steel pipe or round steel, endoporus passes through for wire (7), main shaft external diameter is provided with and can supplies bearing (5), the fixing protruding gear backer of stator (3), accurately to control the location dimension of above-mentioned each parts, circlip groove and bearing cap are established in main shaft two ends.
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| CN201110202864.8A CN102280983B (en) | 2011-07-08 | 2011-07-08 | Permanent magnet generator with two coaxial outer rotors and coreless coil |
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| CN201110202864.8A CN102280983B (en) | 2011-07-08 | 2011-07-08 | Permanent magnet generator with two coaxial outer rotors and coreless coil |
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| CN1160943A (en) * | 1996-01-18 | 1997-10-01 | 有裕株式会社 | Coreless type BLDC motor and method of producing stator assembly |
| JP2003309957A (en) * | 2002-04-15 | 2003-10-31 | Koyo Seiko Co Ltd | Motor and electromotive power steering device |
| CN101814811A (en) * | 2009-02-24 | 2010-08-25 | 河南森源电气股份有限公司 | Axial magnetic field permanent magnet wind generator |
| CN201466945U (en) * | 2009-08-13 | 2010-05-12 | 河南森源集团有限公司 | Radial magnetic field coreless permanent magnet wind generator |
| CN102035331A (en) * | 2010-12-23 | 2011-04-27 | 陈国宝 | Multi-center iron core coil-free permanent magnet motor |
| CN102097906A (en) * | 2011-01-11 | 2011-06-15 | 陈国宝 | Multilayer coreless coil permanent magnet motor |
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