CN104500335A - Wind power generator soft braking circuit - Google Patents
Wind power generator soft braking circuit Download PDFInfo
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- CN104500335A CN104500335A CN201410699969.2A CN201410699969A CN104500335A CN 104500335 A CN104500335 A CN 104500335A CN 201410699969 A CN201410699969 A CN 201410699969A CN 104500335 A CN104500335 A CN 104500335A
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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 provides a wind power generator soft braking circuit. The wind power generator soft braking circuit is characterized by comprising thermal resistors CR1 to CR3, MOS tubes Q1 to Q3, resistors R1 to R8, an MOS drive circuit and a micro processor U1. The single chip processor outputs control signals of the MOS tubes, after the MOS tubes are powered on, the temperature of the thermal resistors raises, the resistance is decreased gradually and approaches zero, a turbine is in short circuit to be in a braking state, and the circuit is simple, reliable and easy to realize.
Description
Technical field
The present invention relates to controller technology field, more specifically, relate to the soft braking circuit of a kind of wind-driven generator.
Background technique
Along with economic development, the demand of the mankind to the energy is increasing, traditional energy reserves are day by day exhausted, and a large amount of uses of traditional fuel become increasingly conspicuous to the harm that environment for human survival causes, the development and utilization of renewable energy sources just becomes current important and urgent problem, in clean energy resource, wind energy and solar energy are the energy of most Development volue, and wherein wind energy is a kind of device utilizing wind-power electricity generation.The power generation system of wind-power electricity generation primarily of wind-driven generator, wind power generation controller, the compositions such as storage battery.And wind-driven generator circuit is the chief component of wind power generation controller, existing wind power generation controller mainly adopts following technology to carry out braking as Fig. 1, braking circuit is made up of rectifying device D1, D8, D10, D7, D9, D11 and power mos pipe Q1, its braking principle be blower fan three line respectively through after rectifier lamp D1, D8, D10 by power mos pipe Q1 short circuit over the ground, all energy are drawn ground end and brake.Such rectifying device must bear larger power, and due to rectifying device having pressure drop during braking, blower fan is still to slowly run, and at this moment substantially all power will be born by rectifying device and metal-oxide-semiconductor.Require higher to rectifying device and metal-oxide-semiconductor, and heating is large.Long-time circuit reliability reduces.
Summary of the invention
The soft braking circuit of wind-driven generator of the present invention, this circuit is easy to realize, and stability is high.
For reaching above-mentioned technical purpose, technological scheme of the present invention is as follows:
The soft braking circuit of a kind of wind-driven generator, comprises thermistor CR1-CR3, metal-oxide-semiconductor Q1-Q3, resistance R1-R8, metal-oxide-semiconductor drive circuit, microprocessor U1; One end of thermistor CR1, one end of thermistor CR2 are connected with three of wind-driven generator respectively with one end of thermistor CR3; The other end of thermistor CR1 is connected with the drain electrode of metal-oxide-semiconductor Q1, and the other end of thermistor CR2 is connected with the drain electrode of metal-oxide-semiconductor Q2, and the other end of thermistor CR3 is connected with the drain electrode of metal-oxide-semiconductor Q3; The grid of metal-oxide-semiconductor Q1 is connected with one end of resistance R2 with one end of resistance R1 respectively, and the grid of metal-oxide-semiconductor Q2 is connected with one end of resistance R4 with one end of resistance R3 respectively, and the grid of metal-oxide-semiconductor Q3 is connected with one end of resistance R6 with one end of resistance R5 respectively; The source electrode of metal-oxide-semiconductor Q1-Q3 and the other end ground connection of resistance R2, R4, R6; Resistance R1, R3 are connected from three different I/O ports of metal-oxide-semiconductor drive circuit respectively with the other end of R5, and metal-oxide-semiconductor drive circuit controls to be connected with three different I/O of microprocessor U1 respectively from three different I/O ports of the I/O port that resistance R1, R3 and R5 connect; Resistance R7 one end is connected with one end of resistance R8, and another I/O port of microprocessor U1 is connected with the tie point between resistance R7 and resistance R8; The other end of resistance R7 is connected with blower voltage output terminal, the other end ground connection of resistance R8.
Preferably, described metal-oxide-semiconductor Q1-Q3 is N-type metal-oxide-semiconductor.
Preferably, described microprocessor U1 is single-chip microcomputer.
Preferably, described thermistor CR1-CR3 is negative tempperature coefficient thermistor.
In the present invention, single-chip microcomputer U1 inner setting one magnitude of voltage, blower fan three-phase wire is contacted with thermistor CR1, CR2, CR3 respectively, blower voltage is obtained by resistance R7, R8 dividing potential drop and compares with single-chip microcomputer U1 inner setting magnitude of voltage, when blower voltage is greater than setting voltage value, single-chip microcomputer U1 exports control signal and controls metal-oxide-semiconductor Q1, Q2, Q3 conducting respectively by metal-oxide-semiconductor drive circuit, and at this moment blower fan three phase circuit flows into CR1, Q1 respectively, CR2, Q2, CR3, Q3.Because the resistance of metal-oxide-semiconductor Q1, Q2, Q3 is little, the energy that blower fan produces is born by thermistor CR1, CR2, CR3.Now thermistor heating gradually, along with heat heat increases, the resistance of thermistor CR1, CR2, CR3 diminishes gradually, and finally close to 0 ohm, at this moment blower fan enters braking state.Utilize thermistor due to the principle that slowly diminishes of heating resistance, achieve the soft braking of blower fan, circuit is simple and reliable and be able to practical application.
Compared with prior art, the beneficial effect of technical solution of the present invention is:
The present invention utilizes the control signal of single-chip microcomputer output mos pipe, makes thermistor temp increase thus its resistance reduces convergence and zero gradually finally makes blower fan short circuit after metal-oxide-semiconductor conducting, so blower fan just enters braking state, this circuit is simple and reliable, is easy to realization.
Accompanying drawing explanation
Fig. 1 is existing wind power generation controller braking circuit schematic diagram;
Fig. 2 is the circuit theory diagrams of the embodiment of the present invention 1.
Embodiment
Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent;
In order to better the present embodiment is described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product;
To those skilled in the art, in accompanying drawing, some known features and explanation thereof may be omitted is understandable.
Below in conjunction with drawings and Examples, technological scheme of the present invention is described further.
Embodiment 1
As shown in Figure 2, the soft braking circuit of a kind of wind-driven generator, comprises thermistor CR1-CR3, metal-oxide-semiconductor Q1-Q3, resistance R1-R8, metal-oxide-semiconductor drive circuit, microprocessor U1; One end of thermistor CR1, one end of thermistor CR2 are connected with three of wind-driven generator respectively with one end of thermistor CR3; The other end of thermistor CR1 is connected with the drain electrode of metal-oxide-semiconductor Q1, and the other end of thermistor CR2 is connected with the drain electrode of metal-oxide-semiconductor Q2, and the other end of thermistor CR3 is connected with the drain electrode of metal-oxide-semiconductor Q3; The grid of metal-oxide-semiconductor Q1 is connected with one end of resistance R2 with one end of resistance R1 respectively, and the grid of metal-oxide-semiconductor Q2 is connected with one end of resistance R4 with one end of resistance R3 respectively, and the grid of metal-oxide-semiconductor Q3 is connected with one end of resistance R6 with one end of resistance R5 respectively; The source electrode of metal-oxide-semiconductor Q1-Q3 and the other end ground connection of resistance R2, R4, R6; Resistance R1, R3 are connected from three different I/O ports of metal-oxide-semiconductor drive circuit respectively with the other end of R5, and metal-oxide-semiconductor drive circuit controls to be connected with three different I/O of microprocessor U1 respectively from three different I/O ports of the I/O port that resistance R1, R3 and R5 connect; Resistance R7 one end is connected with one end of resistance R8, and another I/O port of microprocessor U1 is connected with the tie point between resistance R7 and resistance R8; The other end of resistance R7 is connected with blower voltage output terminal, the other end ground connection of resistance R8.
Preferably, described metal-oxide-semiconductor Q1-Q3 is N-type metal-oxide-semiconductor.
Preferably, described microprocessor U1 is single-chip microcomputer.
Preferably, described thermistor CR1-CR3 is negative tempperature coefficient thermistor.
In the present embodiment, single-chip microcomputer U1 inner setting one magnitude of voltage, blower fan three-phase wire is contacted with thermistor CR1, CR2, CR3 respectively, blower voltage is obtained by resistance R7, R8 dividing potential drop and compares with single-chip microcomputer U1 inner setting magnitude of voltage, when blower voltage is greater than setting voltage value, single-chip microcomputer U1 1,2,3 pin exports control signal and controls metal-oxide-semiconductor Q1, Q2, Q3 conducting respectively by metal-oxide-semiconductor drive circuit, and at this moment blower fan three phase circuit flows into CR1, Q1 respectively, CR2, Q2, CR3, Q3.Because the resistance of metal-oxide-semiconductor Q1, Q2, Q3 is little, the energy that blower fan produces is born by thermistor CR1, CR2, CR3.Now thermistor heating gradually, along with heat heat increases, the resistance of thermistor CR1, CR2, CR3 diminishes gradually, and finally close to 0 ohm, at this moment blower fan enters braking state.Utilize thermistor due to the principle that slowly diminishes of heating resistance, achieve the soft braking of blower fan, circuit is simple and reliable and be able to practical application.
The corresponding same or analogous parts of same or analogous label;
Describe in accompanying drawing position relationship for only for exemplary illustration, the restriction to this patent can not be interpreted as;
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.All any amendments done within the spirit and principles in the present invention, equivalent to replace and improvement etc., within the protection domain that all should be included in the claims in the present invention.
Claims (4)
1. the soft braking circuit of wind-driven generator, is characterized in that, comprises thermistor CR1-CR3, metal-oxide-semiconductor Q1-Q3, resistance R1-R8, metal-oxide-semiconductor drive circuit, microprocessor U1; One end of thermistor CR1, one end of thermistor CR2 are connected with three of wind-driven generator respectively with one end of thermistor CR3; The other end of thermistor CR1 is connected with the drain electrode of metal-oxide-semiconductor Q1, and the other end of thermistor CR2 is connected with the drain electrode of metal-oxide-semiconductor Q2, and the other end of thermistor CR3 is connected with the drain electrode of metal-oxide-semiconductor Q3; The grid of metal-oxide-semiconductor Q1 is connected with one end of resistance R2 with one end of resistance R1 respectively, and the grid of metal-oxide-semiconductor Q2 is connected with one end of resistance R4 with one end of resistance R3 respectively, and the grid of metal-oxide-semiconductor Q3 is connected with one end of resistance R6 with one end of resistance R5 respectively; The source electrode of metal-oxide-semiconductor Q1-Q3 and the other end ground connection of resistance R2, R4, R6; Resistance R1, R3 are connected from three different I/O ports of metal-oxide-semiconductor drive circuit respectively with the other end of R5, and metal-oxide-semiconductor drive circuit controls to be connected with three different I/O of microprocessor U1 respectively from three different I/O ports of the I/O port that resistance R1, R3 and R5 connect; Resistance R7 one end is connected with one end of resistance R8, and another I/O port of microprocessor U1 is connected with the tie point between resistance R7 and resistance R8; The other end of resistance R7 is connected with blower voltage output terminal, the other end ground connection of resistance R8.
2. the soft braking circuit of wind-driven generator according to claim 1, is characterized in that, described metal-oxide-semiconductor Q1-Q3 is N-type metal-oxide-semiconductor.
3. the soft braking circuit of wind-driven generator according to claim 1, is characterized in that, described microprocessor U1 is single-chip microcomputer.
4. the soft braking circuit of wind-driven generator according to claim 1, is characterized in that, described thermistor CR1-CR3 is negative tempperature coefficient thermistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410699969.2A CN104500335B (en) | 2014-11-28 | 2014-11-28 | A kind of soft braking circuit of wind-driven generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410699969.2A CN104500335B (en) | 2014-11-28 | 2014-11-28 | A kind of soft braking circuit of wind-driven generator |
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| CN104500335A true CN104500335A (en) | 2015-04-08 |
| CN104500335B CN104500335B (en) | 2017-10-13 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1092213A (en) * | 1992-11-16 | 1994-09-14 | 艾利森电话股份有限公司 | A kind of shortcircuit limiting protector |
| CN2601476Y (en) * | 2003-01-28 | 2004-01-28 | 惠州三华工业有限公司 | Protective circuit of power converter |
| US7952215B2 (en) * | 2007-05-25 | 2011-05-31 | Mitsubishi Heavy Industries, Ltd. | Wind turbine generator, wind turbine generator system, and power generation control method of wind turbine generator |
| CN102769959A (en) * | 2011-05-06 | 2012-11-07 | 海洋王照明科技股份有限公司 | LED light-dimming driving circuit |
| JP5308511B2 (en) * | 2010-11-25 | 2013-10-09 | 三菱重工業株式会社 | Output control method and output control apparatus for wind power generation equipment |
| CN103442504A (en) * | 2013-09-18 | 2013-12-11 | 湘潭大学 | LED (Light Emitting Diode) constant current driving circuit based on PWM (Pulse-Width Modulation) light-adjusting mode |
-
2014
- 2014-11-28 CN CN201410699969.2A patent/CN104500335B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1092213A (en) * | 1992-11-16 | 1994-09-14 | 艾利森电话股份有限公司 | A kind of shortcircuit limiting protector |
| CN2601476Y (en) * | 2003-01-28 | 2004-01-28 | 惠州三华工业有限公司 | Protective circuit of power converter |
| US7952215B2 (en) * | 2007-05-25 | 2011-05-31 | Mitsubishi Heavy Industries, Ltd. | Wind turbine generator, wind turbine generator system, and power generation control method of wind turbine generator |
| JP5308511B2 (en) * | 2010-11-25 | 2013-10-09 | 三菱重工業株式会社 | Output control method and output control apparatus for wind power generation equipment |
| CN102769959A (en) * | 2011-05-06 | 2012-11-07 | 海洋王照明科技股份有限公司 | LED light-dimming driving circuit |
| CN103442504A (en) * | 2013-09-18 | 2013-12-11 | 湘潭大学 | LED (Light Emitting Diode) constant current driving circuit based on PWM (Pulse-Width Modulation) light-adjusting mode |
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| CN104500335B (en) | 2017-10-13 |
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Denomination of invention: A Soft Braking Circuit for Wind Turbine Generators Effective date of registration: 20230725 Granted publication date: 20171013 Pledgee: Shunde Guangdong rural commercial bank Limited by Share Ltd. Pledgor: GUANGDONG REAL-DESIGN INTELLIGENT TECHNOLOGY Co.,Ltd. Registration number: Y2023980049766 |
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