CN104578656A - Small off-network type winding changing permanent magnet breeze generator - Google Patents
Small off-network type winding changing permanent magnet breeze generator Download PDFInfo
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- CN104578656A CN104578656A CN201510031998.6A CN201510031998A CN104578656A CN 104578656 A CN104578656 A CN 104578656A CN 201510031998 A CN201510031998 A CN 201510031998A CN 104578656 A CN104578656 A CN 104578656A
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Abstract
The invention discloses a small off-network type winding changing permanent magnet breeze generator. The small off-network type winding changing permanent magnet breeze generator is composed of a rotor, a stator and a winding changing control device. The rotor transmits mechanical energy obtained when a draught fan converts wind energy to the stator through a magnetic field, the stator converts the mechanical energy into electric energy and transmits the electric energy to a load, a speed changing device is omitted, and the rotor is directly connected with the draught fan; the rotor is of an outer rotor structure and is directly integrated with a draught fan structure. The stator is of a chute type stator structure, a winding of the stator is in a winding number convertible mode, winding coils are fixed into a stator wire channel and are wound respectively and connected in series to change the number of windings connected into the generator, and the running state of the generator is controlled by changing the number of the winging coils connected to the generator; the winding changing control device is controlled by relays, and the relays are connected between adjacent winding coils; a relay controller is used for outputting on-off control signals to change the number of the windings of motor coils. The small off-network type winding changing permanent magnet breeze generator can be started and generate power at a low wind speed, and can maintain normal running and meet load power supplying requirements at different wind situations and changeable loads.
Description
Technical field
The present invention relates to a kind of small off-grid formula Multiple coil permanent magnetism gentle breeze-driven generator, a kind of small off-grid formula is independently-powered, can adapt to start at low wind speed, generating, based on the permanent magnet generator of Multiple coil conversion control principle, belong to wind power generation field and machine field.
Background technology
Growing in energy resource consumption, environmental pollution is day by day serious today, wind energy as renewable green energy resource becomes the energy of countries in the world most attention, wind energy is exactly the kinetic energy of air, it is clean energy resource with fastest developing speed in a kind of regenerative resource, also be the energy most with large-scale development and commercialized development prospect, the size of wind energy is decided by the density of wind speed and air.The wind energy in the whole world is about, and wherein available wind energy is
, than the water energy total amount that the earth can develop also large 10 times.
China Wind Power resource is very abundant.According to the data of National Meteorological Bureau, China is liftoff 10 meters high wind energy resources gross reserves about
, wherein can the land wind energy content of development and utilization have
, the wind energy resources of 50 meters of height, than many 1 times of 10 meters of height, is about 500000MW.Coastal waters can the wind energy content of development and utilization have
.China's wind power technology with have obvious gap abroad, the growth rate of Wind turbines is obviously not as external.
From the world about the statistics of authoritative institution shows, world's mean wind speed is year by year in reduction, and thus the small-sized fan of research adaptation gentle breeze meets development trend, and it is significant.THE WIND ENERGY RESOURCES IN CHINA is very abundant, low wind energy can utilize district to account for China's area 68% simultaneously, if reasonable employment breeze wind technology, apply it to these low wind energy districts and the more rich area of wind energy, than traditional wind can increase year generating dutation 1000 little time.The threshold wind velocity of gentle breeze-driven generator is more than 1m/s, generating wind speed is 2m/s, can do " light breeze starts, breeze wind ".These two numerical value of traditional wind are then respectively 3.5m/s, 4.2m/s, greatly improve wind energy utilization.
More flexible in the application of small off-grid formula wind-driven generator, in the remote mountain areas away from electrical network scope, the residential block of nomadism, and the other billboard night illumination in street illumination, the power supply of communication base station, expressway is powered.But, wind-driven generator is different from hydroelectric generator and thermoelectric generator, and due to wind-force poor continuity, the change of wind-force wind speed greatly, the corresponding output speed of wind energy converter and torque also can change greatly thereupon, and the instability of wind energy causes generator operation frequent variations.Out of doors, the impact of environment is larger in wind-driven generator general job simultaneously, and its job stability requires higher, and himself safeguards important, on maintenance service, requires simple, convenient, fast.
Summary of the invention
Patent of the present invention relates to a kind of small off-grid formula and becomes winding permanent magnet gentle breeze-driven generator, and this generator can meet startup generating at low wind speeds and adapt to different wind regime, can meet the load electricity consumption requirement of constantly change under off-grid type state simultaneously.
For realizing above-mentioned object, small off-grid formula of the present invention becomes winding permanent magnet gentle breeze-driven generator, comprises rotor, stator and becomes winding control device.Described rotor structure adopts outer-rotor structure, and motor housing is connected with blower fan structure.Described stator is oblique slot type stator structure, and its winding is Multiple coil, the convertible mode of the number of windings; Stator is fixed in blower fan frame by main shaft.Described change winding control device adopts the mode of Control.
Following explanation is had for various piece of the present invention:
Electric generator structure of the present invention, requires and radiating requirements according to Magnetic Field Design, generator adopts outer-rotor structure.Traditional generator be stator outside, rotor rotate produce power.Outer rotor generator is structure in contrast, and stator is in the centre of motor, and rotor outside.Rotor increases rotor inner wall outside, increases subsides magnetic surface and amasss, thus increase number of magnetic poles.Generator external rotor when rotated, because magnetic pole extrudes by centrifugal force outward that rotate, makes the magnetic gap between stator and rotor strengthen, is conducive to motor radiating.
Generator adopts permanent magnet as magnetic field sources, without the need to excitation structure, simplify generator structure, generator outer-rotor structure can be fixed on blower fan structure by outer rotor generator, and such blower fan and generator directly merge one, and rotor connects fan blade and rotates outward at stator, there is compact conformation, save the advantage such as space, deft design, motor is arranged in the middle of impeller, reaches maximum cooling effect to motor self, thus has the features such as efficiency is high, noise is low, installation and maintenance are convenient.
Stator comprises motor stator axle, skewed stator slot, Multiple coil coil.Motor stator is connected with blower fan main shaft, is fixed in blower fan main frame structure; Skewed stator slot structure weakens the additional torque and noise that are caused by slot ripples, coordinates rotor field generating simultaneously; Winding coil is solid in stator slot, and multiple winding coil is wound around respectively and mutually connects to change generator windings number.By the quantity of adjustment winding coil access, reduce the reluctance force between motor internal rotor, realize generator and start under gentle breeze, control generator by the adjustment number of windings simultaneously and adapt to different wind speed, and adapt to the change of load.
Become the mode that winding control device adopts Control.Multiple relay is connected between the adjacent windings in multiple coil; And relay-operated controller, for exporting on-off control signal, to change the number of windings of generator coil.Wind speed detector in wind generator system and generator speed detector detect wind speed and rotating speed, bearing power detector detects bearing power size simultaneously, relay-operated controller calculates the corresponding stator winding number of generator unit stator according to above-mentioned data, and by control relay control access the number of windings, realize controlling in real time generator.
Accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present invention.
Fig. 2 is generator outer-rotor structure schematic diagram.
Fig. 3 becomes winding control device structured flowchart.
Embodiment
A preferred embodiment of the present invention is: see Fig. 1, Fig. 2, Fig. 3, and a kind of small off-grid formula of the present invention becomes winding permanent magnet gentle breeze-driven generator, and it is made up of rotor, stator and change winding control device.Rotor (2) structure installment is on blower fan structure (1), and make wind energy conversion system and generator merge one, permanent magnet (3) adopts the installation method of radial to be arranged on the inside of rotor (2) simultaneously; Generator unit stator (4) is connected on main shaft (6), be fixed together with frame entirety, the surperficial uniform skewed stator slot (5) of stator (4), its internal fixtion has the multiple coil windings (7) be mutually connected in series, stator winding (7) connects change winding control device (8), become the mode that winding control device (8) adopts Control, multiple relay (9) is connected between the adjacent windings in multiple coil; Relay-operated controller, for exporting on-off control signal, to change the winding wire number of turns of generator access.In addition, in order to reduce the iron loss of generator, stator (4) adopts cold-reduced silicon sheet to be overrided to form.
What the present invention adopted is outer-rotor structure, rotor is placed on the outer sideway swivel of stator, stator is fixed in blower fan frame by main shaft, the external rotor shell of generator is directly installed on wind machine structure radome fairing and blade simultaneously, make wind energy conversion system and generator integration, eliminate the transmission between wind energy conversion system to generator and jockey, thus simplify blower fan structure, improve the reliability of wind generator system.Rotor of the present invention adopts permanent magnet as magnetic field sources, and permanent magnet adopts the structure installment of radial in rotor inner wall, makes the mechanism of generator compacter.In the present invention, stator winding is placed in skewed stator slot, adopts flume structure to weaken the additional torque and noise that are caused by slot ripples, rotor field can better be coordinated to generate electricity simultaneously.The variable multiple secondary winding of Control is adopted in the present invention, wind speed detector in wind generator system and generator speed detector detect wind speed and rotating speed, bearing power detector detects bearing power size and output voltage size simultaneously, master controller calculates the corresponding stator winding number of generator unit stator according to above-mentioned data, and by control relay control access the number of windings, realize controlling in real time generator, this measure can also reduce the problems affect of permanent magnet generator significant drawbacks output voltage stability difference, reduce the problems affect of wind energy conversion system stable operating voltage difference under different wind speed simultaneously, make the voltage of output more stable.
Claims (4)
1. a small off-grid formula becomes winding permanent magnet gentle breeze-driven generator, it is by rotor (2), stator (4) and change winding control device (8) composition, it is characterized in that: described generator amature (2) structure is fixed on blower fan structure (1), synchronous rotary thereupon, permanent magnet (3) is arranged on rotor (2) in a radial manner, generator is that stator (4) is fixed on stator main shaft (6), the surperficial uniform skewed stator slot (5) of stator (4) of generator, its internal fixtion has the multiple coil windings (7) be mutually connected in series, multiple coil windings is connected respectively to and becomes on winding control device (8), become winding control device (8) and control generator windings transformation of variables, normally run to control generator, meet load supplying requirement.
2. small off-grid formula according to claim 1 becomes winding permanent magnet gentle breeze-driven generator, it is characterized in that: described rotor (2) structure adopts outer-rotor structure, rotor (2) structure is directly fixed on blower fan structure (1), and permanent magnet (3) adopts the installation method of radial to be arranged on the inside of rotor (2).
3. small off-grid formula according to claim 1 becomes winding permanent magnet gentle breeze-driven generator, it is characterized in that: described stator (4) is oblique slot type stator structure, its winding coil (7) is solid in skewed stator slot (5), multiple winding coil is wound around respectively and is mutually connected in series, and winding access variable amounts changes.
4. small off-grid formula according to claim 1 becomes winding permanent magnet gentle breeze-driven generator, it is characterized in that: described change winding control device (8) adopts the mode of Control, and multiple relay (9) is connected between the adjacent windings in multiple coil; Relay-operated controller, for exporting on-off control signal, to change the winding wire number of turns of generator access.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510031998.6A CN104578656A (en) | 2015-01-22 | 2015-01-22 | Small off-network type winding changing permanent magnet breeze generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510031998.6A CN104578656A (en) | 2015-01-22 | 2015-01-22 | Small off-network type winding changing permanent magnet breeze generator |
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| Publication Number | Publication Date |
|---|---|
| CN104578656A true CN104578656A (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510031998.6A Pending CN104578656A (en) | 2015-01-22 | 2015-01-22 | Small off-network type winding changing permanent magnet breeze generator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104835429A (en) * | 2015-05-15 | 2015-08-12 | 陈佰满 | Multifunctional wind drive information exhibiting device |
| CN113452173A (en) * | 2021-06-22 | 2021-09-28 | 武汉科大电控设备有限公司 | Control device based on excitation system of Internet of things |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201013532Y (en) * | 2006-11-29 | 2008-01-30 | 常州轨道车辆牵引传动工程技术研究中心 | Wind power generator with outer rotor contained in nave |
| CN101594113A (en) * | 2009-04-13 | 2009-12-02 | 北京前沿科学研究所 | The frequency stabilization control system of permanent magnet wind-driven generator that can adapt to changing torque |
| CN103516273A (en) * | 2012-06-16 | 2014-01-15 | 丁士来 | Method for adjusting output power of synchronous generator |
-
2015
- 2015-01-22 CN CN201510031998.6A patent/CN104578656A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201013532Y (en) * | 2006-11-29 | 2008-01-30 | 常州轨道车辆牵引传动工程技术研究中心 | Wind power generator with outer rotor contained in nave |
| CN101594113A (en) * | 2009-04-13 | 2009-12-02 | 北京前沿科学研究所 | The frequency stabilization control system of permanent magnet wind-driven generator that can adapt to changing torque |
| CN103516273A (en) * | 2012-06-16 | 2014-01-15 | 丁士来 | Method for adjusting output power of synchronous generator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104835429A (en) * | 2015-05-15 | 2015-08-12 | 陈佰满 | Multifunctional wind drive information exhibiting device |
| CN113452173A (en) * | 2021-06-22 | 2021-09-28 | 武汉科大电控设备有限公司 | Control device based on excitation system of Internet of things |
| CN113452173B (en) * | 2021-06-22 | 2022-02-22 | 武汉科大电控设备有限公司 | Control device based on excitation system of Internet of things |
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