CN201298793Y - Small-sized direct-drive permanent-magnet synchronous wind-driven generator and small-sized wind-driven generating system thereof - Google Patents
Small-sized direct-drive permanent-magnet synchronous wind-driven generator and small-sized wind-driven generating system thereof Download PDFInfo
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- CN201298793Y CN201298793Y CNU2008202030251U CN200820203025U CN201298793Y CN 201298793 Y CN201298793 Y CN 201298793Y CN U2008202030251 U CNU2008202030251 U CN U2008202030251U CN 200820203025 U CN200820203025 U CN 200820203025U CN 201298793 Y CN201298793 Y CN 201298793Y
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Abstract
The utility model discloses a small-sized direct-drive permanent-magnet synchronous wind-driven generator and a small-sized wind-driven generating system thereof. The generator comprises a casing which is provided with a rotary shaft through a bearing; the casing is internally provided with a main motor and an auxiliary motor; a main motor rotor and an auxiliary motor rotor are arranged at the front and back of the rotary shaft; a main motor stator and an auxiliary motor stator are respectively arranged on the casing corresponding to the position of the main motor stator and the auxiliary motor rotor; and one winding of auxiliary stator windings is connected with a DC power supply regulation control end. The generating system further comprises an electric energy storage device, a DC power supply regulation device, a controller and the like. The generator can adopt the method of power regulation and energy compensation to keep the stability of the wind energy generating system, and the working efficiency of the whole generating system can be effectively improved.
Description
Technical field
The utility model relates to a kind of wind-driven generator and wind generator system, particularly a kind of small-sized wind power generator and wind generator system thereof.
Background technology
Wind power generation is fastest-rising a kind of in the renewable energy resources technology, common have alternating current asynchronous generator, a double-fed asynchronous generator, in wind power system, need gear up, also carbon brush and slip ring to be arranged for double-fed asynchronous generator, this wind power system manufacturing cost height, poor reliability, and noise pollution is very serious.
Non-gear box, directly drive, non-brushing is subjected to people's attention, new wind generator system scheme is a variable-speed operation, what become the adjusting of slurry square, the slow-speed of revolution, high efficiency, High Power Factor directly drives multipole magneto alternator, becomes the current research hot of research and development.
Wherein, miniature wind power generation system is little because of its volume, unit price is low, thus be not suitable for adopting the Variable Pitch governor motion, thereby prior art generally is to adopt the fixedly mode of pitch.But because wind speed can constantly change, existing miniature wind power generation system can not be suitable for, its job insecurity, unreliable, and wind energy utilization is low.
In addition, the employing multiple-grooved multipolar dynamo of present wind-driven generator, pairing number of stator slots is many, for satisfying technological requirement, stator and rotor size will be made very greatly, and with the frequency that makes it to obtain to need, wind-force changes the potential fluctuation that causes because moment of inertia can be stabilized greatly.But, the multipole structure fabrication technology of this multiple-grooved is complicated, unstable properties, thereby can not reach best result of use, and also there is the shortcoming that own vol is big, cost is high in this motor, also need being used of reduction box simultaneously, thereby make the cost of small-sized wind power generator further not reduce.And have technology prejudice traditionally, and think that structure relatively simply lacks the few electrode structure of groove and can cause in the use that radial electromagnetic force is excessive, vibrations are violent and the big problem of noise, only be used for small-sized or microgenerator all the time.The generator of low speed high torque normally adopts the multiple-grooved multi-polar structure of relative complex, and structure is relatively simply lacked the record that the few electrode structure of groove does not use and attempts in the generator of low speed high torque.
The utility model content
In order to solve the problems of the technologies described above, the purpose that the utility model is wanted be to provide a kind of simple in structure, efficient is high, a kind of stably miniature direct-drive permanent magnet synchronous aerogenerator of running.
The another one purpose be to provide a kind of simple in structure, with low cost, use reliable, wind energy utilization is high, miniature wind power generation system stably turns round.
A kind of miniature direct-drive permanent magnet synchronous aerogenerator, comprise casing, casing has rotating shaft by Bearing Installation, be provided with main motor and stand-by motor in the casing, be provided with main rotor and stand-by motor rotor before and after in rotating shaft, be separately installed with magnet steel on main rotor and the stand-by motor rotor, on casing, be provided with corresponding with main rotor and stand-by motor rotor-position respectively main motor stator and stand-by motor stator, be respectively equipped with main motor stator winding and stand-by motor stator winding on main motor stator and the stand-by motor stator, one group of winding in the stand-by motor stator winding is connected with DC power supply and regulates control end.
Further, described stator and rotor are the few electrode structure of few groove.
Miniature wind power generation system, comprise wind energy conversion system, generator and energy storage, wind energy conversion system directly is connected with generator, described generator is the direct-drive permanent-magnetism synchronous generator, generator includes main motor and stand-by motor, the casing of generator has rotating shaft by Bearing Installation, be provided with main rotor and stand-by motor rotor before and after in rotating shaft, be embedded with magnet steel respectively on main rotor and the stand-by motor rotor, on casing, be provided with corresponding with main rotor and stand-by motor rotor-position respectively main motor stator and stand-by motor stator, be respectively equipped with main motor stator winding and stand-by motor stator winding on main motor stator and the stand-by motor stator, the output of main motor stator winding is connected with power consumption equipment with energy storage by cable, the winding of stand-by motor stator winding is connected with the DC power supply adjuster, the DC power supply adjuster connects controller, the input of controller connects wind energy conversion system, wind energy conversion system is carried out speed detect.
Further, described stator and rotor are the few electrode structure of few groove.
The beneficial effects of the utility model are: because this motor includes main motor and stand-by motor, two stators, dual-rotor structure, can adopt the method for power adjustments and energy compensating to keep the stable of wind power generation system, carry out torque adjustment by stand-by motor, realize the speed regulation of torque damp type, keep constant speed, power back-off is carried out in generating when wind-force is not enough, in the rated speed operation, main motor is that generator is directly powered, stand-by motor idle running, the operating efficiency of whole generating system can effectively improve, and the generator of electricity generation system can stable operation in the broad wind speed range, utilizes wind energy more efficiently, and operating process is simple.Further, described stator and rotor are the few electrode structure of few groove, to realize the low-speed big input, have high power density, can cancel gear drive, both reduced the overall volume of wind generator system, can avoid the gear drive wearing and tearing to cause breaking down again, improve the operating efficiency of whole generating system, and its cost can reduce effectively widely, have great economic benefit.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is done further detailed saying
Bright.
Fig. 1 is the utility model generator Structure schematic diagram;
Fig. 2 is the structural representation of the utility model electricity generation system.
Embodiment
With reference to Fig. 1, a kind of miniature direct-drive permanent magnet synchronous aerogenerator of the present utility model, comprise casing 1, casing 1 has rotating shaft 2 by Bearing Installation, be provided with main motor and stand-by motor in the casing 1, be provided with main rotor 3 and stand-by motor rotor 4 before and after in rotating shaft 2, be separately installed with magnet steel 5 on main rotor 3 and the stand-by motor rotor 4,6, on casing 1, be provided with corresponding with main rotor 3 and stand-by motor rotor 4 positions respectively main motor stator 7 and stand-by motor stator 8, be respectively equipped with main motor stator winding 9 and stand-by motor stator winding 10 on main motor stator 7 and the stand-by motor stator 8, one group of winding in the stand-by motor stator winding 10 is connected with DC power supply and regulates control end.
Further, as preferred implementation of the present utility model, motor stator and rotor structure are simple, and number of poles and groove are counted optimization and cooperated, and described stator and rotor are the few electrode structure of few groove, and it has high power density.Specifically can be as follows, the stator in described main motor and the stand-by motor is 9 groove structures, and described rotor is provided with 8 utmost points or 10 utmost points, and each utmost point of rotor is provided with magnet steel.
As mode of priority, described magnet steel is a rectangle, embeds in the rotor, and is tangential arrangement, and the groove of described stator is a straight trough, and flute profile is identical, evenly distributes.
In addition, further, described stator winding is a three-phase, and 3 groups of windings of three-phase are concentrated for 120 ° and embedded.
Miniature wind power generation system of the present utility model, comprise wind energy conversion system, generator and energy storage, wind energy conversion system directly is connected with generator, described generator is the direct-drive permanent-magnetism synchronous generator, generator includes main motor and stand-by motor, the casing 1 of generator has rotating shaft 2 by Bearing Installation, be provided with main rotor 3 and stand-by motor rotor 4 before and after in rotating shaft 2, be embedded with magnet steel 5 respectively on main rotor 3 and the stand-by motor rotor 4,6, on casing 1, be provided with corresponding with main rotor 3 and stand-by motor rotor 4 positions respectively main motor stator 7 and stand-by motor stator 8, be respectively equipped with main motor stator winding 9 and stand-by motor stator winding 10 on main motor stator 7 and the stand-by motor stator 8, the output of main motor stator winding 9 and stand-by motor stator winding 10 is connected with power consumption equipment with energy storage by cable, wherein, the output of stand-by motor stator winding 10 is connected on the cable by power switch, the winding of stand-by motor stator winding 10 also is connected with the DC power supply adjuster, the DC power supply adjuster connects controller, the other end connects energy storage by the powered by direct current switch, the input of controller connects wind energy conversion system, wind energy conversion system is carried out speed detect.
As shown in Figure 1, described stator and rotor can be the few electrode structure of few groove.Be specially, the stator in described main motor and the stand-by motor is 9 groove structures, and described rotor is provided with 8 utmost points or 10 utmost points, and each utmost point of rotor is provided with magnet steel.Described magnet steel is a rectangle, embeds in the rotor, and is tangential arrangement, and the groove of described stator is a straight trough, and flute profile is identical, evenly distributes.Preferably, described stator winding is a three-phase, and 3 groups of windings of three-phase are concentrated for 120 ° and embedded.
Further, this generator belongs to the few electrode structure of few groove, be the high density magnetic circuit, stator winding circle is than most ten times of multipole magneto alternator, make full use of space, groove crack and increase umber of turn to obtain under the low cruise situation, producing higher back-emf voltage, under low-speed conditions, can directly export 220V voltage, system design is constant speed, constant frequency, fixedly pitch, double-stator and double-rotor structure, control mode adopts the method for power adjustments and energy compensating to keep the stable of system, so the utility model is a kind of novel wind generator system.
Adopt the bi-motor structure, when wind speed is suitable, when rated speed move, main motor was that generator is directly powered, and stand-by motor dallies;
When wind speed bigger, when moving more than rated speed, for direct current, size of current is by the decision of rotation speed of fan feedback to one of stand-by motor stator winding, electric current and torque relation curve are the trial curves that stand-by motor is measured, and this kind is operating as the speed regulation of torque damp type;
Less when wind speed, when moving below rated speed, stand-by motor drops into generator operation, and the cable of its electric energy and main motor is incorporated into the power networks, and this kind operation is the compensation of power adjustments formula.
An embodiment parameter of below enumerating the utility model generator further specifies:
Miniature direct-drive permanent magnet wind-driven generator technical parameter,
1, rated power P=5000w
2, rated wind speed Vw=9m/s
3, ratio λ=7.94 of tip speed and wind speed
4, power coefficient ω=0.294
5, blade radius γ=3.5m diameter=7m
6, wind energy conversion system rated revolution n=295r/min
7, pylon height H=10m
8, output voltage three-phase 220V
Controlling schemes is as follows:
1, constant speed, constant frequency, rated revolution 195r/min, frequency 13Hz, frequency change error ± 20%;
2, when wind speed Vw surpasses 10.8m/s, start auxiliary generator, a winding coil is wherein determined size of current to speed feedback owing to analyze the back for direct current, produce damping torque the wind energy conversion system rotating speed is remained unchanged;
3, when wind speed Vw is lower than 7.2m/s, start the auxiliary generator electricity generate function to the electrical network supplementary power, consistent because of main motor with the stand-by motor characteristic, do not need intermediate controlled;
Stop power supply when 4, wind speed is excessive.
In addition, generator of the present utility model and system thereof can promote frequency of supply by the frequency preset device to the power set that frequency requirement is arranged, in use for the use of can directly powering of frequency no requirement (NR).
In addition, the starting reactance square is caused that by slot effect its influence is minimum in the test of the present utility model, the stability of rotation stator does not need skewed slot, and the umber of turn several times are higher than multipolar generator, and back-emf voltage is also very high, current ratio multipolar dynamo by lead is little, electric current is the principal element of heating, and electric current is little favourable to dispelling the heat, simultaneously, this generator is a low-frequency generator, the motor iron loss seldom so can not generate heat, can make the physical property of magnet steel not be hit and influences.
Aspect control technology, wind speed has fluctuation at random, and is little when big when causing wind energy utilization, therefore a control mode will be arranged, capturing wind energy to greatest extent when guaranteeing the quality of power supply by control, and the utility model wind power system has higher efficient.
Aspect economy, electric generator structure is simple, low cost of manufacture, and because of non-gear box and blade torque changing apparatus, operational reliability improves, and need not safeguard in designed life.
This system goes for the small water conservancy electricity consumption in decentralized power supply, independently-powered, farmland, reduces the construction investment of centrally connected power supply, and the B.O.T.U. cost of miniature wind power generation system is lower than the coal electricity cost of centrally connected power supply.
Owing to adopted the generator of said structure stator and rotor, can adopt the method for power adjustments and energy compensating to keep the stable of wind power generation system, carry out torque adjustment by stand-by motor, keep constant speed, carry out power back-off with generating when wind-force is not enough, move in rated speed, main motor is that generator is directly powered, stand-by motor idle running, the operating efficiency of whole generating system can effectively improve, and the generator of electricity generation system can stable operation in the broad wind speed range, utilizes wind energy more efficiently, and operating process is simple.
Claims (10)
1. miniature direct-drive permanent magnet synchronous aerogenerator, comprise casing, casing has rotating shaft by Bearing Installation, it is characterized in that: be provided with main motor and stand-by motor in the casing, be provided with main rotor and stand-by motor rotor before and after in rotating shaft, be separately installed with magnet steel on main rotor and the stand-by motor rotor, on casing, be provided with corresponding with main rotor and stand-by motor rotor-position respectively main motor stator and stand-by motor stator, be respectively equipped with main motor stator winding and stand-by motor stator winding on main motor stator and the stand-by motor stator, one group of winding in the stand-by motor stator winding is connected with DC power supply and regulates control end.
2. miniature direct-drive permanent magnet synchronous aerogenerator according to claim 1 is characterized in that: described stator and rotor are the few electrode structure of few groove.
3. miniature direct-drive permanent magnet synchronous aerogenerator according to claim 2 is characterized in that: the stator in described main motor and the stand-by motor is 9 groove structures, and described rotor is provided with 8 utmost points or 10 utmost points, and each utmost point of rotor is provided with magnet steel.
4. according to claim 1,2 or 3 described miniature direct-drive permanent magnet synchronous aerogenerators, it is characterized in that: described magnet steel is a rectangle, embeds in the rotor, and is tangential arrangement, and the groove of described stator is a straight trough, and flute profile is identical, evenly distributes.
5. according to claim 1,2 or 3 described miniature direct-drive permanent magnet synchronous aerogenerators, it is characterized in that: described stator winding is a three-phase, and 3 groups of windings of three-phase are concentrated for 120 ° and embedded.
6. miniature wind power generation system, comprise wind energy conversion system, generator and energy storage, wind energy conversion system directly is connected with generator, it is characterized in that: described generator is the direct-drive permanent-magnetism synchronous generator, generator includes main motor and stand-by motor, the casing of generator has rotating shaft by Bearing Installation, be provided with main rotor and stand-by motor rotor before and after in rotating shaft, be embedded with magnet steel respectively on main rotor and the stand-by motor rotor, on casing, be provided with corresponding with main rotor and stand-by motor rotor-position respectively main motor stator and stand-by motor stator, be respectively equipped with main motor stator winding and stand-by motor stator winding on main motor stator and the stand-by motor stator, the output of main motor stator winding and stand-by motor stator winding is connected with power consumption equipment with energy storage by cable, the winding of stand-by motor stator winding is connected with the DC power supply adjuster, the DC power supply adjuster connects controller, the input of controller connects wind energy conversion system, wind energy conversion system is carried out speed detect.
7. miniature wind power generation system according to claim 6 is characterized in that: described stator and rotor are the few electrode structure of few groove.
8. miniature wind power generation system according to claim 6 is characterized in that: the stator in described main motor and the stand-by motor is 9 groove structures, and described rotor is provided with 8 utmost points or 10 utmost points, and each utmost point of rotor is provided with magnet steel.
9. miniature wind power generation system according to claim 6 is characterized in that: described magnet steel is a rectangle, embeds in the rotor, and is tangential arrangement, and the groove of described stator is a straight trough, and flute profile is identical, evenly distributes.
10. miniature wind power generation system according to claim 6 is characterized in that: described stator winding is a three-phase, and 3 groups of windings of three-phase are concentrated for 120 ° and embedded.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202030251U CN201298793Y (en) | 2008-11-07 | 2008-11-07 | Small-sized direct-drive permanent-magnet synchronous wind-driven generator and small-sized wind-driven generating system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202030251U CN201298793Y (en) | 2008-11-07 | 2008-11-07 | Small-sized direct-drive permanent-magnet synchronous wind-driven generator and small-sized wind-driven generating system thereof |
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| CN201298793Y true CN201298793Y (en) | 2009-08-26 |
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| CNU2008202030251U Expired - Fee Related CN201298793Y (en) | 2008-11-07 | 2008-11-07 | Small-sized direct-drive permanent-magnet synchronous wind-driven generator and small-sized wind-driven generating system thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016201712A1 (en) * | 2015-06-18 | 2016-12-22 | 今盛科技有限公司 | Multi-rotor permanent magnet synchronous motor |
| CN106451965A (en) * | 2016-10-27 | 2017-02-22 | 江苏大学 | Parallel double-stator permanent magnet motor |
| CN112491196A (en) * | 2020-11-20 | 2021-03-12 | 无锡南洋职业技术学院 | New energy automobile variable power motor |
-
2008
- 2008-11-07 CN CNU2008202030251U patent/CN201298793Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016201712A1 (en) * | 2015-06-18 | 2016-12-22 | 今盛科技有限公司 | Multi-rotor permanent magnet synchronous motor |
| CN106451965A (en) * | 2016-10-27 | 2017-02-22 | 江苏大学 | Parallel double-stator permanent magnet motor |
| CN106451965B (en) * | 2016-10-27 | 2018-12-21 | 江苏大学 | A kind of block form double-stator permanent magnet motor |
| CN112491196A (en) * | 2020-11-20 | 2021-03-12 | 无锡南洋职业技术学院 | New energy automobile variable power motor |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HESHAN XINLI STRIP STEEL CO., LTD. Free format text: FORMER OWNER: HESHAN HELONG ELECTRO-MECHANICAL CO., LTD. Effective date: 20110210 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 529700 HESHAN HELONG ELECTROMECHANICAL CO., LTD., SANLIAN INDUSTRY DEVELOPMENT AREA, GULAO TOWN, HESHAN CITY, GUANGDONG PROVINCE TO: 529725 NO.18, JIANSHE WEST ROAD, TAOYUAN TOWN, HESHAN CITY, GUANGDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20110210 Address after: 529725 No. 18 Jianshe West Road, Taoyuan Town, Guangdong, Heshan Patentee after: Guangdong Heshan Xinli Stripsteel Co., Ltd. Address before: 529700 Guangdong city of Heshan Province three industrial development zone Gulao town Heshan City Helong Electrical Co. Ltd. Patentee before: Heshan Helong Electro-mechanical Co., Ltd. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20121107 |