CN102005858B - Brushless dual-blade heterodromously-driven permanent-magnet wind generator - Google Patents

Brushless dual-blade heterodromously-driven permanent-magnet wind generator Download PDF

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Publication number
CN102005858B
CN102005858B CN2010105515716A CN201010551571A CN102005858B CN 102005858 B CN102005858 B CN 102005858B CN 2010105515716 A CN2010105515716 A CN 2010105515716A CN 201010551571 A CN201010551571 A CN 201010551571A CN 102005858 B CN102005858 B CN 102005858B
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China
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stator
end cap
rotor
right end
gear
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Expired - Fee Related
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CN2010105515716A
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CN102005858A (en
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张凤阁
陈进华
刘光伟
高钰阁
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Shenyang University of Technology
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Shenyang University of Technology
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

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Abstract

The invention relates to a brushless dual-blade heterodromously-driven permanent-magnet wind generator. Two groups of blades, an output shaft and a left end cover of a shell are mounted on a solid shaft, a right end cover of the shell is mounted on the output shaft, a left end cover of an outer rotor, a left bearing of the outer bearing, a left end cover of a stator and a left bearing of an inner rotating shaft are sequentially mounted on the solid shaft from the left end cover of the shell, a right bearing of the outer rotor, a right end cover of the outer rotor, a right bearing of the outer rotor, a right end cover of the stator and a right bearing of the inner rotating shaft are sequentially mounted on the output shaft from the right end cover of the shell, the stator is arranged between the left end cover of the stator and the right end cover of the stator, an outer permanent-magnet rotor is arranged between the left end cover of the outer rotor and the right end cover of the outer rotor, an inner permanent-magnet rotor is fixed on the solid shaft, and a reverse transmission auxiliary device is arranged between the inner permanent-magnet rotor and the outer permanent-magnet rotor. By means of the wind generator disclosed by the invention, a voltage can be built up at a lower wind speed, the stress of the stator during normal operation is far less than that of a general motor with the same power, and the problems caused by an electric brush structure, such as operation efficiency reduction, reliability reduction, frequent maintenance to parts of the electric brush, and the like, are solved.

Description

The incorgruous driving permanent-magnetic wind driven generator of a kind of brushless pair of blade
Technical field
The present invention relates to wind power generation field, specifically refer to a kind of wind power plant.
Background technology
Traditional wind-driven generator is by the corresponding rotor of a stator, its rotor and stator opposite shell, and stator is non-rotary; Only lean on rotor rotation; Produce rotating magnetic field, correspondingly the stator cutting magnetic line produces the dislike electromotive force, and the wind energy that fan blade is caught changes electric energy into.
The shortcoming of this generation mode is, can know according to active force in the mechanics and reaction force principle, when rotor is rotated counterclockwise by the effect of stator field power in stator, receives onesize reaction force on the stator.For fixed stator, need come this part power of balance through alternate manner, certainly will consume part energy.Because traditional wind all is just torque to be sent to generator afterwards through the gear speed governing, and pilot process has a lot of resistances and loss, this just requires higher starting wind velocity in addition.Generator must be near rated wind speed could normal power generation, the scope of work wind speed is narrow, and power coefficient is lower, makes that the wind energy that surpasses half is not caught fully and transformed, and causes generating efficiency low like this, power consumption is big.
Yet, in order to reduce starting wind velocity, improving wind energy utilization, the birotor permanent magnetic wind-driven generator has appearred.For example number of patent application: ZL 02235745.9 has announced a kind of coaxial reversing double-rotor wind-driven generator; When internal rotor turns clockwise; The reaction force acts that internal rotor produces makes external rotor be rotated counterclockwise on external rotor; Make full use of the reaction force that internal rotor produces like this, reduce starting wind velocity, improve the efficient that mechanical energy changes electric energy; But the inside and outside rotor winding of this motor all passes through slip ring and brush projected current, causes that the motor operational efficiency descends, reliability reduces and often need drawback such as safeguard to parts such as brushes.
Summary of the invention
The invention provides a kind of being implemented under the lower situation of wind speed and set up voltage; The stressed ratio of stator is little a lot of with the conventional motor of power during operate as normal, and overcomes that the operational efficiency that the brush structure causes descends, reliability reduces and often need safeguard etc. the incorgruous driving permanent-magnetic wind driven generator of brushless pair of blade of problem to parts such as brushes.
Technical scheme of the present invention is:
The incorgruous driving permanent-magnetic wind driven generator of a kind of brushless pair of blade is characterized in that: solid shafting one end of said motor is equipped with first group of paddle, and the other end is with output shaft, and solid shafting is concentric with output shaft, and second group of paddle is installed on output shaft; Solid shafting is equipped with the casing left end cap near first group of paddle one end, and output shaft is connected with the casing right end cap through casing bearing right end cap near second group of paddle one end, is connected through casing between casing left end cap and the casing right end cap; On solid shafting,, external rotor left end cap, external rotor left bearing, stator left end cap and interior rotating shaft left bearing axially inwardly are installed successively along solid shafting from the casing left end cap; On output shaft,, outer shaft right bearing, external rotor right end cap, external rotor right bearing, stator right end cap and interior rotating shaft right bearing axially inwardly are installed successively along output shaft from the casing right end cap; Between stator left end cap and the stator right end cap stator is installed; Be connected with outer p-m rotor between external rotor left end cap and the external rotor right end cap, outer p-m rotor is positioned at the stator outside, and can rotate flexibly; Interior p-m rotor is fixed on the solid shafting, is positioned at the stator inboard, and can rotate flexibly; The winding lead-out wire is drawn through the hole on external rotor right end cap and the casing right end cap; Interior p-m rotor and outside be provided with a reverse drive servicing unit between the p-m rotor, adopt gear transmission structure, promptly p-m rotor is provided with ring gear outside; The 3rd gear is fixed on the solid shafting; First gear and second gear are fixed on the rotation axis, and rotation axis is installed on the stator fastening connection piece, and can rotate flexibly; Ring gear and second gears engaged, first gear and second gears engaged.
The deflection angle of said first group of paddle and second group of paddle is opposite.
Be installed with stator fastening connection piece in the middle of the said stator in order to fastening stator silicon steel sheet; Stator fastening connection piece one end is fixed on the stator left end cap; The other end is fixed on the stator right end cap; Axially evenly distributing of stator fastening connection piece solid shafting in the stator upper edge, two cover fixed axis gears are installed in the symmetric position of stator fastening connection piece respectively.
The external rotor right end cap offers draws wire loop, and the casing right end cap has the lead-out wire hole, and the diameter in lead-out wire hole is littler than the width of drawing wire loop, and the winding lead-out wire outside is with the lead-out wire conduit, and draws by the lead-out wire conduit.
Stator inner round wall and cylindrical wall are evenly slotted, and embed to intersect ring-like winding, choose any two phase windings in the winding that stator inner side slot and outer side slot embed, and form ring-like intersection stator winding in stator end cross exchanged position.
The number of teeth product of the number of teeth of first gear and the 3rd gear equals the number of teeth of second gear and the number of teeth product of ring gear.
The permanent magnet of interior p-m rotor is plug-in type or built-in structure.
The permanent magnet employing face of outer p-m rotor pastes formula or plug in construction.
Output shaft is solid shafting or hollow shaft.
The invention has the beneficial effects as follows: 1) interior p-m rotor, outer p-m rotor rotate with same speed on the contrary; It is identical in ring-like intersection stator winding, to induce frequency jointly; The dislike electromotive force that phase place is identical; Make that generating capacity doubles under same wind friction velocity, even and under the very low situation of wind speed, also can build pressure work, starting wind velocity reduced; When 2) number of poles was identical, its minimum operating speed can be reduced to the half the of conventional permanent-magnetic wind driven generator, and high workload wind speed is identical with conventional permanent-magnetic wind driven generator, makes its work wind speed range be greatly expanded, and wind energy utilization is significantly improved; 3) because the inside and outside both sides of stator receive rightabout reaction force respectively, make that composite force that receives and the moment on the stator significantly reduces; 4) owing to adopt two ends to stretch out, distinguish mounting blades, help the balance of pylon; 5) under brushless condition, realize Conversion of energy, removed the trouble of parts such as brush often being safeguarded replacing from, reduced mechanical loss, improved system effectiveness and reliability.
Description of drawings:
Fig. 1 is a motor overall structure sketch map of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to generalized section;
Fig. 3 is that the B-B of Fig. 1 is to generalized section;
Fig. 4 is the ring-like intersection winding overhang of a motor stator of the present invention line sketch map;
Description of reference numerals:
1 solid shafting, 2 power transmission shafts, 3 first gears, 4 ring gears, 5 second gears, 6 the 3rd gears; 7 stator left end caps, 8 external rotor left end caps, 9 casing left end caps, 10 interior p-m rotors, 11 stator fastening connection pieces, 12 stators; 13 outer p-m rotors, 14 casings, 15 stator right end caps, 16 external rotor right end caps, 17 winding lead-out wires, 18 casing right end caps; 19 output shafts, 20 external rotor left bearings, 21 interior rotating shaft left bearings, 22 interior rotating shaft right bearings, 23 external rotor right bearings; 24 outer shaft right bearings, 25 casing bearing right end caps, 26 lead-out wire sleeve pipes, 27 first groups of blades, 28 second groups of blades.
Embodiment:
Below in conjunction with accompanying drawing the present invention is specified:
Fig. 1 is a motor overall structure sketch map of the present invention, and is as shown in the figure, and solid shafting 1 one ends of motor are equipped with first group of paddle 27, and the other end is with output shaft 19, and solid shafting 1 is concentric with output shaft 19, and output shaft 19 can be that solid shafting also can be hollow shaft.Second group of paddle 28 is installed on output shaft 19; The deflection angle of first group of paddle 27 and second group of paddle 28 is opposite; Therefore;, wind can make their incorgruous rotations when moving two groups of blades; Antidromous two groups of blades can obtain more wind energy than single-blade leaf system system, therefore adopt two groups of schemes with blade of opposite deflection angle can improve power coefficient, make the wind-powered electricity generation conversion efficiency improve.
Solid shafting 1 is equipped with casing left end cap 9 near first group of paddle 27 1 end, and output shaft 19 is connected with casing right end cap 18 through casing bearing right end cap 25 near second group of paddle 28 1 end, is connected through casing 14 between casing left end cap 9 and the casing right end cap 18; On solid shafting 1,, external rotor left end cap 8, external rotor left bearing 20, stator left end cap 7 and interior rotating shaft left bearing 21 axially inwardly are installed successively along solid shafting 1 from casing left end cap 9; On output shaft 19,, outer shaft right bearing 24, external rotor right end cap 16, external rotor right bearing 23, stator right end cap 15 and interior rotating shaft right bearing 22 axially inwardly are installed successively along output shaft 19 from casing right end cap 18; Stator 12 is installed between stator left end cap 7 and the stator right end cap 15.
External rotor left bearing 20 is separated internal rotor rotary system, static stator system and external rotor rotary system with external rotor right bearing 23 dexterously; Guaranteed independent separately stable operation; In addition, the outer shaft right bearing 24 between external rotor rotary system and casing right end cap has played the effect of supporting and locate the external rotor rotary system.
Be installed with stator fastening connection piece 11 in the middle of the stator 12 in order to fastening stator silicon steel sheet; Play the effect of fixing said power transmission shaft; Guarantee the uniformity of inside and outside air gap when this motor moves, improved the stability of motor run time organization, improved the overall performance of motor.Stator fastening connection piece 11 1 ends are fixed on the stator left end cap 7; The other end is fixed on the stator right end cap 15; Stator fastening connection piece 11 axially evenly distributes stator 12 upper edge solid shaftings 1; Two cover fixed axis gears are installed in the symmetric position of stator fastening connection piece 11 respectively, and p-m rotor 10, stator 12, outer p-m rotor 13 threes' concentricity is guaranteed in making like this, and stability is better.Stator 12 inner round wall and cylindrical wall are evenly slotted, and embed to intersect ring-like winding, choose any two phase windings in the winding that stator 12 inner side slots and outer side slot embed, and form ring-like intersection stator winding at stator 12 end portions cross transpositions.Be connected with outer p-m rotor 13 between external rotor left end cap 8 and the external rotor right end cap 16, outer p-m rotor 13 is positioned at stator 12 outsides, and can rotate flexibly; Interior p-m rotor 10 is fixed on the solid shafting 1, is positioned at stator 12 inboards, and can rotates flexibly; The permanent magnet of interior p-m rotor 10 is plug-in type or built-in structure, and the permanent magnet employing face of outer p-m rotor 13 pastes formula or plug in construction.
Outer p-m rotor 13 and stator 12 are owing to adopted the fixing mode in two ends, the mechanical stability in the time of can strengthening the motor operation.
External rotor right end cap 16 offers draws wire loop; Casing right end cap 18 has the lead-out wire hole, and the diameter in lead-out wire hole is littler than the width of drawing wire loop, and winding lead-out wire 17 outsides are with lead-out wire conduit 26; And draw by lead-out wire conduit 26; Therefore, the electric energy that can be directly stator winding be produced directly exported through lead, have simple in structure, be convenient to safeguard and advantage that reliability is high.
Interior p-m rotor 10 and outside be provided with a reverse drive servicing unit between the p-m rotor 13, p-m rotor 10 and outer p-m rotor 13 are with fast incorgruous rotation in guaranteeing.Fig. 2 be the A-A of Fig. 1 to generalized section, Fig. 3 be the B-B of Fig. 1 to generalized section, as shown in the figure.The reverse drive servicing unit adopts gear transmission structure; Promptly p-m rotor 13 is provided with 4, the three gears 6 of ring gear and is fixed on the solid shafting 1 outside, and first gear 3 and second gear 5 are fixed on the rotation axis 2; Rotation axis 2 is installed on the stator fastening connection piece 11; And can rotate ring gear 4 and second gear 5 engagement, first gear 3 and second gear 5 engagement flexibly.Because the deflection angle of first group of paddle 27 and second group of paddle 28 is opposite; P-m rotor 10, the 13 incorgruous rotations of outer p-m rotor in the wind energy that makes blade catch drives; In order to make described interior p-m rotor 10, outer p-m rotor 13 with fast incorgruous rotation, the number of teeth product of the number of teeth of described first gear 3 and the 3rd gear 6 equals the number of teeth of second gear 5 and the number of teeth product of ring gear 4.Again because these motor stator 12 both sides winding numbers of poles are identical; Then stator 12 inboard air gaps are opposite with outside air-gap field rotary speed equidirectional; The dislike electromotive force frequency that just in time induces is identical, not only makes the inside and outside both sides of stator winding winding induced electromotive force frequency the same through the reverse drive servicing unit, makes that also the phase place of inside and outside both sides winding induced electromotive force is identical; The induced electromotive force of the electric energy that sends is maximum like this; Its numerical value is inside and outside both sides winding induced electromotive force algebraical sums, and this moment, the motor power output was maximum, and is most effective.
Fig. 4 is the ring-like intersection winding overhang of a motor stator of the present invention line sketch map, and is as shown in the figure, is example with 6 utmost points, 36 groove motors, the ring-like intersection winding overhang of this motor wiring of having drawn, U among the figure 1-U 2, V 1-V 2, W 1-W 2Be respectively the joint of three phase windings; As can be seen from the figure; V in upper strata groove and the lower floor's groove and W phase winding be in cross exchanged position, stator end place, and this makes that the winding phase sequence is opposite in upper strata groove and the lower floor's groove, and just the winding phase sequence in stator inner round wall and the cylindrical wall groove is opposite.The wind energy of catching when blade like this drives interior p-m rotor respectively, outer p-m rotor rotates; Make interior p-m rotor, outer p-m rotor with fast incorgruous rotation through above-mentioned described servicing unit; In stator winding, induce same frequency, synchronous dislike electromotive force separately, jointly to grid power transmission.

Claims (9)

1. incorgruous driving permanent-magnetic wind driven generator of brushless pair of blade; It is characterized in that: solid shafting (1) one end of said motor is equipped with first group of paddle (27); The other end is with output shaft (19); Solid shafting (1) is concentric with output shaft (19), and second group of paddle (28) is installed on output shaft (19); Solid shafting (1) is equipped with casing left end cap (9) near first group of paddle (27) one ends; Output shaft (19) is connected with casing right end cap (18) through casing bearing right end cap (25) near second group of paddle (28) one ends, is connected through casing (14) between casing left end cap (9) and the casing right end cap (18); Go up from casing left end cap (9) at solid shafting (1), external rotor left end cap (8), external rotor left bearing (20), stator left end cap (7) and interior rotating shaft left bearing (21) axially inwardly are installed successively along solid shafting (1); Go up from casing right end cap (18) at output shaft (19), outer shaft right bearing (24), external rotor right end cap (16), external rotor right bearing (23), stator right end cap (15) and interior rotating shaft right bearing (22) axially inwardly are installed successively along output shaft (19); Between stator left end cap (7) and the stator right end cap (15) stator (12) is installed; Be connected with outer p-m rotor (13) between external rotor left end cap (8) and the external rotor right end cap (16), outer p-m rotor (13) is positioned at stator (12) outside, and can rotate flexibly; Interior p-m rotor (10) is fixed on the solid shafting (1), is positioned at stator (12) inboard, and can rotates flexibly; Winding lead-out wire (17) is drawn through the hole on external rotor right end cap (16) and the casing right end cap (18); Interior p-m rotor (10) and outside be provided with a reverse drive servicing unit between the p-m rotor (13); Adopt gear transmission structure; Promptly p-m rotor (13) is provided with ring gear (4) outside, and the 3rd gear (6) is fixed on the solid shafting (1), and first gear (3) and second gear (5) are fixed on the rotation axis (2); Rotation axis (2) is installed on the stator fastening connection piece (11); And can rotate ring gear (4) and second gear (5) engagement, first gear (3) and second gear (5) engagement flexibly.
2. according to the incorgruous driving permanent-magnetic wind driven generator of the said a kind of brushless pair of blade of claim 1, it is characterized in that: said first group of paddle (27) is opposite with the deflection angle of second group of paddle (28).
3. according to the incorgruous driving permanent-magnetic wind driven generator of the said a kind of brushless pair of blade of claim 1; It is characterized in that: be installed with stator fastening connection piece (11) in the middle of the said stator (12) in order to fastening stator silicon steel sheet; Stator fastening connection piece (11) one ends are fixed on the stator left end cap (7); The other end is fixed on the stator right end cap (15); Stator fastening connection piece (11) axially evenly distributes stator (12) upper edge solid shafting (1), and two cover fixed axis gears are installed in the symmetric position of stator fastening connection piece (11) respectively.
4. according to the incorgruous driving permanent-magnetic wind driven generator of the said a kind of brushless pair of blade of claim 1; It is characterized in that: external rotor right end cap (16) offers draws wire loop; Casing right end cap (18) has the lead-out wire hole; And the diameter in lead-out wire hole is littler than the width of drawing wire loop, and winding lead-out wire (17) outside is with lead-out wire conduit (26), and draws by lead-out wire conduit (26).
5. according to the incorgruous driving permanent-magnetic wind driven generator of the said a kind of brushless pair of blade of claim 1; It is characterized in that: stator (12) inner round wall and cylindrical wall are evenly slotted; Embed the ring-like winding of intersection; Choose any two phase windings in the winding that stator (12) inner side slot and outer side slot embed, form ring-like intersection stator winding at stator (12) end portions cross transposition.
6. according to the incorgruous driving permanent-magnetic wind driven generator of the said a kind of brushless pair of blade of claim 1, it is characterized in that: the number of teeth product of the number of teeth of first gear (3) and the 3rd gear (6) equals the number of teeth of second gear (5) and the number of teeth product of ring gear (4).
7. according to the incorgruous driving permanent-magnetic wind driven generator of the said a kind of brushless pair of blade of claim 1, it is characterized in that: the permanent magnet of interior p-m rotor (10) is plug-in type or built-in structure.
8. according to the incorgruous driving permanent-magnetic wind driven generator of the said a kind of brushless pair of blade of claim 1, it is characterized in that: the permanent magnet employing face of outer p-m rotor (13) pastes formula or plug in construction.
9. according to the incorgruous driving permanent-magnetic wind driven generator of the said a kind of brushless pair of blade of claim 1, it is characterized in that: output shaft (19) is solid shafting or hollow shaft.
CN2010105515716A 2010-11-21 2010-11-21 Brushless dual-blade heterodromously-driven permanent-magnet wind generator Expired - Fee Related CN102005858B (en)

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CN201851280U (en) * 2010-11-21 2011-06-01 沈阳工业大学 Brushless permanent magnetic wind driven generator driven by double paddles in different directions

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CN2556381Y (en) * 2002-05-27 2003-06-18 徐鸣 Coaxial reverse double-rotor with-mill generator
CN201090372Y (en) * 2007-07-25 2008-07-23 高建华 Multilevel wind motor
CN201851280U (en) * 2010-11-21 2011-06-01 沈阳工业大学 Brushless permanent magnetic wind driven generator driven by double paddles in different directions

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