CN104632525A - Magnetic powder brake system of wind generator - Google Patents
Magnetic powder brake system of wind generator Download PDFInfo
- Publication number
- CN104632525A CN104632525A CN201510063650.5A CN201510063650A CN104632525A CN 104632525 A CN104632525 A CN 104632525A CN 201510063650 A CN201510063650 A CN 201510063650A CN 104632525 A CN104632525 A CN 104632525A
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- China
- Prior art keywords
- magnetic powder
- wind
- brake
- powder brake
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000006247 magnetic powder Substances 0.000 title claims abstract description 37
- 230000005611 electricity Effects 0.000 claims abstract description 25
- 238000012546 transfer Methods 0.000 claims description 22
- 230000005669 field effect Effects 0.000 claims description 18
- 238000000034 method Methods 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 230000000979 retarding effect Effects 0.000 description 8
- 238000013475 authorization Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/335—Output power or torque
-
- 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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to a magnetic powder brake system of a wind generator. The magnetic powder brake system comprises a controller, a power source changeover module, a digital anemometer, a rotation speed signal module, a drive module, a wind generator shaft and a magnetic powder brake device. Magnetic powder is used as a medium of the magnetic powder brake system. Through the controller with a single-chip microcomputer component as a core, the output brake torque of the magnetic powder brake device is adjusted and controlled, and stepless deceleration brake is conducted on the wind generator shaft. When the environment wind speed is smaller than an upper limit wind speed, the wind generator can still continue to generate electricity in the brake process. The magnetic powder brake system of the wind generator improves the generating efficiency of the wind generator, and reduces energy waste. The magnetic powder brake system has the advantages that the impact force is small, frictional materials can be used repeatedly, the service life is long, and safety and stability are achieved. Especially, a new brake mode is provided for the wind generator, and the brake modes of the wind generator are increased.
Description
Technical field
The present invention relates to technical field of wind power generator, particularly relate to wind-driven generator magnetic powder brake system.
Background technique
Along with people are to the continuous demand of non-pollution renewable energy, wind power industry is subject to people's attention day by day.People are while fast-developing Wind Power Generation Industry in recent years, to the control technique of wind-driven generator and safety requirement more and more higher.
Wind-driven generator is owing to being in physical environment, and wind speed change greatly throughout the year.When wind speed super large, if take slowing-down brake brake measure to wind-driven generator not in time, so wind-driven generator will exceed the highest running speed, cause it to damage.Therefore wind-driven generator must install skidding protective system.
The skidding protective system that current wind-driven generator is installed, mainly contains electromagnetic brake disc braking system, electric brake braking system, water brake braking system three kinds of modes.
Authorization Notice No. is CN 201474876U, applying date 2009.07.31, utility model patent name is called the soft brake of wind-driven generator, this patent provides a kind of soft brake of wind-driven generator, although wind-driven generator can be made when overspeed operation to realize flexible deceleration, and then make generator progressively stall by brake block and brake disc friction, but this utility model patent deficiency utilizes HYDRAULIC CONTROL SYSTEM brake block to produce frictional force with brake card to realize braking, brake block is easy to wear in brake process, and stops generating after skidding.
Authorization Notice No. is CN 102312776B, applying date 2011.08.22, patent of invention name is called a kind of electromagnetic brake device for wind power generator, although this invention is in brake process, the two burst pulse mode control switch of incremental classification is adopted to close, brake is continued for some time, then decontrols, repeatedly carry out; The principle producing braking force is when carrying out electromagnetic brake, utilizes fan coil to be energized, and creates new magnetic field contrary to generator unit stator magnetic direction, hinders the motion of rotor, produce a braking force to wheel hub.But this invention deficiency has a grade slowing-down brake.
Authorization Notice No. is CN 102094754B, and the applying date is 2009.12.14, and patent of invention name is called electronic brake system for wind driven generator, this invention is in electric brake process, adopt repeatedly the mode of stopping to brake, deficiency belongs to have a grade slowing-down brake mode, and have mechanical brake interface.
Summary of the invention
The object of the invention is exactly not enough for prior art, a kind of wind-driven generator magnetic powder brake system is provided, the controller that it passes through is core with single-chip microcomputer element, take magnetic as medium, the output retarding torque of regulation and control magnetic powder brake, control the brake of wind-power electricity generation arbor infinite speed reduction, the soft braking thus the infinite speed reduction realizing wind-driven generator brakes.
Technological scheme: wind-driven generator magnetic powder brake system of the present invention, comprises controller, power transfer module, digital anemometer, tach signal module, driver module, magnetic powder brake and wind-power electricity generation arbor;
Described digital anemometer and tach signal model calling controller, described controller connects driver module, described driver module connects magnetic powder brake, described power transfer module connects digital anemometer, tach signal module, controller and magnetic powder brake, and described magnetic powder brake is connected with wind-power electricity generation arbor;
It is PIC16F873 single-chip microcomputer that described controller comprises model, and the output terminal of controller is connected with one end of the first resistance R1;
Described driver module comprises the first resistance R1, the second resistance R2, field effect transistor Q and diode D, the grid of field effect transistor Q connects one end of the first resistance R1 and one end of the second resistance R2, the drain electrode of field effect transistor Q is connected with one end of field coil L F, the source electrode of field effect transistor Q is connected with the negative pole of power transfer module, the negative electrode of diode D is connected with the drain electrode of field effect transistor Q, the anode of diode D is connected with the source electrode of field effect transistor Q, and the other end of the second resistance R2 is connected with the negative pole of power transfer module;
Described magnetic powder brake comprises field coil LF, magnetic, brake bracket and rotor shaft, and the other end of field coil L F is connected with the positive pole of 48V power supply;
Described power transfer module input end connects positive pole and the negative pole of 48V power supply, the 48V negative pole of power transfer module, 12V negative pole and 5V negative pole link together, digital anemometer connects positive pole and the negative pole of 12V power supply, the positive pole of tach signal model calling 12V power supply and negative pole, controller connects positive pole and the negative pole of 5V power supply.
Form magnetic chain under the magnetic fields that described magnetic produces at field coil LF, magnetic chain connects brake bracket and rotor shaft, and rotor shaft connects wind-power electricity generation arbor.
Working principle: the controller taking single-chip microcomputer as core parts, is responsible for the data processing received.Digital anemometer monitoring of environmental wind speed, and give controller its ambient wind velocity signal exported, the rotating speed of wind-power electricity generation arbor gives controller through tach signal module generation rotating speed digital signal, when the rotating speed of wind-power electricity generation arbor is greater than its rated speed, the pwm signal that controller output pulse width increases gradually gives driver module, driver module drives field coil that its electric current is increased gradually, magnetic field strengthens gradually, the magnetic be now in this magnetic field is magnetized to magnetic chain, magnetic chain forms combination force between brake bracket and rotor shaft, combination force increases along with the enhancing in magnetic field, combination force is larger, the retarding torque be delivered on rotor shaft and wind-power electricity generation arbor is also larger, thus wind-driven generator brake deceleration gradually, until make it maintain rated speed state and generating of remaining in operation.When controller receive ambient wind velocity be greater than the upper limit wind velocity signal time, controller increases the pwm signal pulse width exported, increase the electric current flowing through field coil, increase the magnetic induction intensity in magnetic field, increase the combination force that magnetic chain is formed, increase the retarding torque on rotor shaft and wind-power electricity generation arbor, make wind-driven generator brake deceleration again, stop until slowing down.When controller receive ambient wind velocity be less than the upper limit wind velocity signal time, controller reduces the pwm signal pulse width exported gradually, the electric current flowing through field coil is reduced gradually, the magnetic field making it produce is weakened gradually, reduce the combination force that magnetic chain is formed between brake bracket and rotor shaft gradually, reduce the retarding torque on rotor shaft and wind-power electricity generation arbor gradually, wind-driven generator rotating speed is increased gradually until reach its rated speed.When the rotating speed of wind-power electricity generation arbor is greater than its rated speed again, then system enters next control cycle, goes round and begins again.
Beneficial effect: compared with prior art advantage of the present invention is for wind-driven generator provides a kind of new brake modes, has widened wind-driven generator brake modes.It take magnetic as medium, by the controller being core with single-chip microcomputer element, the output retarding torque of regulation and control magnetic powder brake, brakes to wind-power electricity generation arbor infinite speed reduction, and when ambient wind velocity is less than upper limit wind speed, wind-driven generator still can continue generating in brake process.Invention increases the generating efficiency of wind-driven generator, reduce energy waste, have impact force little, friction material can reuse, and the life-span is long, the advantage of safety and stability.
Accompanying drawing explanation
Fig. 1 is wind-driven generator magnetic powder brake system architecture diagram of the present invention;
Fig. 2 is wind-driven generator magnetic powder brake components of system as directed circuit diagram of the present invention;
Fig. 3 is the magnetic powder brake structured flowchart of wind-driven generator magnetic powder brake system of the present invention.
Have in figure: power transfer module 1, digital anemometer 2, tach signal module 3, controller 4, driver module 5, magnetic powder brake 6, wind-power electricity generation arbor 7; Field coil 6-1, magnetic 6-2, brake bracket 6-3, rotor shaft 6-4.
Embodiment
Also by best embodiment, the present invention is elaborated below in conjunction with accompanying drawing.
See Fig. 1, structure of the present invention comprises power transfer module 1, digital anemometer 2, tach signal module 3, controller 4, driver module 5, magnetic powder brake 6, wind-power electricity generation arbor 7; Digital anemometer 2 and tach signal module 3 connection control device 4, controller 4 connects driver module 1 again, driver module 1 connects magnetic powder brake 6 again, power transfer module 1 connects digital anemometer 2, tach signal module 3, controller 4 and magnetic powder brake 6, and magnetic powder brake 6 is connected with wind-power electricity generation arbor 7;
See Fig. 1 and Fig. 2, it is PIC16F873 single-chip microcomputer that controller 4 comprises model, and the output terminal of controller 4 is connected with one end of the first resistance R1;
See Fig. 1 and Fig. 2, driver module 5 comprises the first resistance R1, the second resistance R2, field effect transistor Q and diode D, the grid of field effect transistor Q connects one end of the first resistance R1 and one end of the second resistance R2, the drain electrode of field effect transistor Q is connected with one end of field coil L F, the source electrode of field effect transistor Q is connected with the negative pole of power transfer module, the negative electrode of diode D is connected with the drain electrode of field effect transistor Q, the anode of diode D is connected with the source electrode of field effect transistor Q, and the other end of the second resistance R2 is connected with the negative pole of power transfer module;
See Fig. 2 and Fig. 3, magnetic powder brake 6 comprises field coil 6-1, magnetic 6-2, brake bracket 6-3 and rotor shaft 6-4, and the other end of field coil 6-1 is connected with the positive pole of 48V power supply;
See Fig. 1 and Fig. 2, the input end of power transfer module 1 connects positive pole and the negative pole of 48V power supply, the negative pole of 48V power supply, the 12V negative pole of power transfer module 1 and 5V negative pole link together, digital anemometer 2 connects positive pole and the negative pole of the 12V power supply of power transfer module 1, tach signal module 3 connects positive pole and the negative pole of the 12V power supply of power transfer module 1, and controller 4 connects positive pole and the negative pole of the 5V power supply of power transfer module 1.
See Fig. 1 and Fig. 3, form magnetic chain under the magnetic fields that magnetic 6-2 produces at field coil 6-1, magnetic chain connects brake bracket 6-3 and rotor shaft 6-4, rotor shaft 6-4 and connects wind-power electricity generation arbor 7.
Working procedure: the controller 4 take model as PIC16F873 single-chip microcomputer being core parts, is responsible for the data processing received.Digital anemometer 2 monitoring of environmental wind speed, and give controller 4 its ambient wind velocity signal exported, the rotating speed of wind-power electricity generation arbor 7 forms rotating speed digital signal through tach signal module 3 and gives controller 4, when the rotating speed of wind-power electricity generation arbor 7 is greater than its rated speed, the pwm signal that controller 4 output pulse width increases gradually gives driver module 5, driver module 5 drives field coil LF that its electric current is increased gradually, magnetic field strengthens gradually, the magnetic 6-2 be now in this magnetic field is magnetized to magnetic chain, magnetic chain forms combination force between brake bracket 6-3 and rotor shaft 6-4, combination force increases along with the enhancing in magnetic field, combination force is larger, the retarding torque be delivered on rotor shaft 6-4 and wind-power electricity generation arbor 7 is also larger, thus wind-driven generator brake deceleration gradually, until make it maintain rated speed state and generating of remaining in operation.When controller 4 receive ambient wind velocity be greater than the upper limit wind velocity signal time, controller 4 increases the pwm signal pulse width exported, increase the electric current flowing through field coil LF, increase the magnetic induction intensity in magnetic field, increase the combination force that magnetic chain is formed, increase the retarding torque on rotor shaft 6-4 and wind-power electricity generation arbor 7, wind-driven generator is slowed down again, stop until slowing down.When controller 4 receive ambient wind velocity be less than the upper limit wind velocity signal time, controller 4 exports the pwm signal reducing pulse width gradually, the electric current flowing through field coil LF is reduced gradually, the magnetic field making it produce is weakened gradually, reduce the combination force that magnetic chain is formed between brake bracket 6-3 and rotor shaft 6-4 gradually, reduce the retarding torque on rotor shaft 6-4 and wind-power electricity generation arbor 7 gradually, wind-driven generator rotating speed is increased gradually until reach its rated speed.When the rotating speed of wind-power electricity generation arbor 7 is greater than its rated speed again, then system enters next control cycle, goes round and begins again.
The foregoing is only preferred forms of the present invention; protection scope of the present invention is not limited with above-mentioned mode of execution; in every case those of ordinary skill in the art modify or conversion according to the equivalence that disclosed content is done, and all should include in the protection domain recorded in claims.
Claims (2)
1. wind-driven generator magnetic powder brake system, comprises controller, power transfer module, digital anemometer, tach signal module, driver module, wind-power electricity generation arbor, characterized by further comprising magnetic powder brake;
Described digital anemometer and tach signal model calling controller, described controller connects driver module, described driver module connects magnetic powder brake, described power transfer module connects digital anemometer, tach signal module, controller and magnetic powder brake, and described magnetic powder brake is connected with wind-power electricity generation arbor;
It is PIC16F873 single-chip microcomputer that described controller comprises model, and the output terminal of controller is connected with one end of the first resistance (R1);
Described driver module comprises the first resistance (R1), second resistance (R2), field effect transistor (Q) and diode (D), the grid of field effect transistor (Q) connects one end of the first resistance (R1) and one end of the second resistance (R2), the drain electrode of field effect transistor (Q) is connected with one end of field coil (LF), the source electrode of field effect transistor (Q) is connected with the negative pole of power transfer module, the negative electrode of diode (D) is connected with the drain electrode of field effect transistor (Q), the anode of diode (D) is connected with the source electrode of field effect transistor (Q), the other end of the second resistance (R2) is connected with the negative pole of power transfer module,
Described magnetic powder brake comprises field coil (LF), magnetic, brake bracket and rotor shaft, and the other end of field coil (LF) is connected with the positive pole of 48V power supply;
Described power transfer module input end connects positive pole and the negative pole of 48V power supply, the 48V negative pole of power transfer module, 12V negative pole and 5V negative pole link together, digital anemometer connects positive pole and the negative pole of 12V power supply, the positive pole of tach signal model calling 12V power supply and negative pole, controller connects positive pole and the negative pole of 5V power supply.
2. wind-driven generator magnetic powder brake system according to claim 1, magnetic chain is formed under it is characterized in that the magnetic fields that described magnetic produces at field coil (LF), magnetic chain connects brake bracket and rotor shaft, and rotor shaft connects wind-power electricity generation arbor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510063650.5A CN104632525A (en) | 2015-02-05 | 2015-02-05 | Magnetic powder brake system of wind generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510063650.5A CN104632525A (en) | 2015-02-05 | 2015-02-05 | Magnetic powder brake system of wind generator |
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| Publication Number | Publication Date |
|---|---|
| CN104632525A true CN104632525A (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510063650.5A Pending CN104632525A (en) | 2015-02-05 | 2015-02-05 | Magnetic powder brake system of wind generator |
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| CN (1) | CN104632525A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020136544A1 (en) * | 2018-12-24 | 2020-07-02 | Hero Power Technology Corporation | Wind power generation apparatus |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001103794A (en) * | 1999-09-28 | 2001-04-13 | Matsushita Seiko Co Ltd | Wind turbine generator |
| JP4657534B2 (en) * | 2001-09-17 | 2011-03-23 | 古河機械金属株式会社 | Wind generator electric brake |
| CN102094754A (en) * | 2009-12-14 | 2011-06-15 | 谭宗享 | Electronic brake system for wind driven generator |
| CN201908467U (en) * | 2010-09-25 | 2011-07-27 | 浙江双箭橡胶股份有限公司 | Runner type magnetic powder brake mechanism of parking garage |
| CN102312776A (en) * | 2011-08-22 | 2012-01-11 | 徐剑雄 | Electromagnetic brake device for wind power generator |
| CN204436691U (en) * | 2015-02-05 | 2015-07-01 | 战金玉 | Wind-driven generator magnetic powder brake system |
-
2015
- 2015-02-05 CN CN201510063650.5A patent/CN104632525A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001103794A (en) * | 1999-09-28 | 2001-04-13 | Matsushita Seiko Co Ltd | Wind turbine generator |
| JP4657534B2 (en) * | 2001-09-17 | 2011-03-23 | 古河機械金属株式会社 | Wind generator electric brake |
| CN102094754A (en) * | 2009-12-14 | 2011-06-15 | 谭宗享 | Electronic brake system for wind driven generator |
| CN201908467U (en) * | 2010-09-25 | 2011-07-27 | 浙江双箭橡胶股份有限公司 | Runner type magnetic powder brake mechanism of parking garage |
| CN102312776A (en) * | 2011-08-22 | 2012-01-11 | 徐剑雄 | Electromagnetic brake device for wind power generator |
| CN204436691U (en) * | 2015-02-05 | 2015-07-01 | 战金玉 | Wind-driven generator magnetic powder brake system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020136544A1 (en) * | 2018-12-24 | 2020-07-02 | Hero Power Technology Corporation | Wind power generation apparatus |
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Application publication date: 20150520 |