CN106100476A - Wind-power electricity generation output frequency modulation system - Google Patents
Wind-power electricity generation output frequency modulation system Download PDFInfo
- Publication number
- CN106100476A CN106100476A CN201610425398.2A CN201610425398A CN106100476A CN 106100476 A CN106100476 A CN 106100476A CN 201610425398 A CN201610425398 A CN 201610425398A CN 106100476 A CN106100476 A CN 106100476A
- Authority
- CN
- China
- Prior art keywords
- motor
- wind
- control unit
- frequency modulation
- electricity generation
- 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
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/42—Arrangements for controlling electric generators for the purpose of obtaining a desired output to obtain desired frequency without varying speed of the generator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
Abstract
The present invention relates to technical field of wind power generation, particularly a kind of wind-power electricity generation output frequency modulation system, including motor, it is provided with speed probe in described motor, described speed probe is connected with controller input by A/D converter, described controller output end is connected with PWM control unit input, and described PWM control unit outfan leads to power switch pipe and is connected with motor.After using said structure, the present invention, by the rotating speed of speed probe detection motor, is then adjusted the output PWM waveform of PWM control unit, thus is adjusted the rotating speed of motor by power switch pipe so that the rotating speed of motor maintains stable state by controller.
Description
Technical field
The present invention relates to technical field of wind power generation, particularly a kind of wind-power electricity generation output frequency modulation system.
Background technology
Simplest wind-driven generator can be made up of impeller and electromotor two parts, and the tower standing in certain altitude is done, this
It it is small off-grid blower fan.The electric energy that initial wind-driven generator sends changes with the wind and cuts in and out, and voltage and frequency are unstable, do not have
There is actual application value.In order to solve these problems, modern wind turbine adds gear-box, yaw system, hydraulic system, brake system
System and control system etc..
Chinese utility model patent CN 202732232 U discloses a kind of wind-driven generator with micro-power consumption, by blade and synchronization
Motor forms, and the stator of synchronous motor uses FMAM square-wave excitation, output constant frequency and constant voltage, can be directly incorporated into electrical network.
Fan blade rotating shaft in this Synchronous generator directly drives synchronous motor, eliminates the speed increasing gear in double fed induction generators
Case；Use by generator amature excitation, eliminate the two-way inverter in double fed induction generators or total power changer；By
In eliminating step-up gear, wind-driven generator with micro-power consumption group installs and just can generate electricity, and has paid for incision wind speed and cut-out wind speed first
Concept；Wind is the least, as long as blade can be understood, just can generate electricity, and wind is big again, as long as blower fan includes to fall, just can generate electricity, complete machine mechanical energy
Consumption and electric energy loss are all close to zero.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of stable wind-power electricity generation output system.
For solving above-mentioned technical problem, the wind-power electricity generation output frequency modulation system of the present invention, including motor, in described motor
Being provided with speed probe, described speed probe is connected with controller input by A/D converter, and described controller is defeated
Going out end to be connected with PWM control unit input, described PWM control unit outfan leads to power switch pipe and is connected with motor.
Further, described PWM control unit two ends are parallel with proportional integral circuit.
Further, described PWM control unit includes pwm chip U3, the input of described pwm chip U3 with
Controller output end is connected, and the outfan of described pwm chip U3 is connected with power switch pipe.
After using said structure, the present invention, by the rotating speed of speed probe detection motor, is then adjusted by controller
The output PWM waveform of PWM control unit, thus the rotating speed of motor is adjusted by power switch pipe so that the rotating speed of motor maintains
In stable state.
Accompanying drawing explanation
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.
Fig. 1 is the structured flowchart of wind-power electricity generation of the present invention output frequency modulation system.
Fig. 2 is the circuit theory diagrams of PWM control unit of the present invention.
In figure: 1 is motor, 2 is speed probe, and 3 is A/D converter, and 4 is controller, and 5 is PWM control unit, and 6 are
Proportional integral circuit, 7 is power switch pipe
Detailed description of the invention
As it is shown in figure 1, the wind-power electricity generation output frequency modulation system of the present invention includes motor 1, in described motor 1, it is provided with rotating speed
Sensor 2, described speed probe 2 is connected with controller 4 input by A/D converter 3, described controller 4 outfan
Being connected with PWM control unit 5 input, described PWM control unit 5 outfan leads to power switch pipe 7 and is connected with motor 1.
Further, so that the output of PWM control unit is more accurate to power switch pipe 7, described PWM controls single
Unit two ends are parallel with proportional integral circuit.
Further, as in figure 2 it is shown, described PWM control unit includes pwm chip U3, described pwm chip U3
Input be connected with controller output end, the outfan of described pwm chip U3 is connected with power switch pipe.Described
Pwm chip U3 uses SG2525A, reaches the impulse waveform of 20KHz for driving isolation drive electricity for output services frequency
Road, has the functions such as under-voltage locking, overvoltage protection and soft start simultaneously.The pwm pulse waveform exported by heating control circuit is defeated
Enter to isolated drive circuit.
The operation principle of the present invention is as follows: detected the rotating speed of motor 1 by the speed probe in motor 1, and by motor 1
Rotary speed data be transferred to controller 4, after controller 4 draws motor speed, send a signal to PWM control unit 5, adjust PWM
The output PWM waveform of control unit 5, thus adjust the output state of power switch pipe, it is finally reached the mesh adjusting motor speed
's.
Although the foregoing describing the detailed description of the invention of the present invention, but those skilled in the art should be appreciated that this
It is merely illustrative of, present embodiment can be made various changes or modifications, without departing from principle and the essence of the present invention,
Protection scope of the present invention is only limited by the claims that follow.
Claims (3)
1. a wind-power electricity generation output frequency modulation system, including motor, it is characterised in that: it is provided with revolution speed sensing in described motor
Device, described speed probe is connected with controller input by A/D converter, and described controller output end controls with PWM
Unit input is connected, and described PWM control unit outfan leads to power switch pipe and is connected with motor.
2. export frequency modulation system according to the wind-power electricity generation described in claim 1, it is characterised in that: described PWM control unit two ends
It is parallel with proportional integral circuit.
3. export frequency modulation system according to the wind-power electricity generation described in claim 1, it is characterised in that: described PWM control unit includes
Pwm chip U3, the input of described pwm chip U3 is connected with controller output end, described pwm chip U3
Outfan be connected with power switch pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610425398.2A CN106100476A (en) | 2016-06-15 | 2016-06-15 | Wind-power electricity generation output frequency modulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610425398.2A CN106100476A (en) | 2016-06-15 | 2016-06-15 | Wind-power electricity generation output frequency modulation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106100476A true CN106100476A (en) | 2016-11-09 |
Family
ID=57235257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610425398.2A Pending CN106100476A (en) | 2016-06-15 | 2016-06-15 | Wind-power electricity generation output frequency modulation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106100476A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2017404568B2 (en) * | 2017-07-18 | 2019-09-12 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Method and device for controlling output power of a wind turbine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101369795A (en) * | 2008-10-07 | 2009-02-18 | 上海大学 | Maximum power tracing and bus-bar voltage coordination control method of mixed field excitation wind power generation system |
| CA2740076A1 (en) * | 2008-10-09 | 2010-04-15 | Gerald Hehenberger | Differential gear for wind power plant |
| CN102130644A (en) * | 2011-04-21 | 2011-07-20 | 阳光电源股份有限公司 | Exciting method, device and system of direct-current brushless synchronous wind driven generator |
| CN103208958A (en) * | 2013-03-21 | 2013-07-17 | 中国科学院电工研究所 | DC (direct control) servo drive control system |
| CN204646548U (en) * | 2015-04-07 | 2015-09-16 | 安徽理工大学 | A kind of novel permanent magnetic direct-drive wind power system |
-
2016
- 2016-06-15 CN CN201610425398.2A patent/CN106100476A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101369795A (en) * | 2008-10-07 | 2009-02-18 | 上海大学 | Maximum power tracing and bus-bar voltage coordination control method of mixed field excitation wind power generation system |
| CA2740076A1 (en) * | 2008-10-09 | 2010-04-15 | Gerald Hehenberger | Differential gear for wind power plant |
| CN102130644A (en) * | 2011-04-21 | 2011-07-20 | 阳光电源股份有限公司 | Exciting method, device and system of direct-current brushless synchronous wind driven generator |
| CN103208958A (en) * | 2013-03-21 | 2013-07-17 | 中国科学院电工研究所 | DC (direct control) servo drive control system |
| CN204646548U (en) * | 2015-04-07 | 2015-09-16 | 安徽理工大学 | A kind of novel permanent magnetic direct-drive wind power system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2017404568B2 (en) * | 2017-07-18 | 2019-09-12 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Method and device for controlling output power of a wind turbine |
| AU2017404568C1 (en) * | 2017-07-18 | 2020-02-13 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Method and device for controlling output power of a wind turbine |
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