CN202444283U - Power control shock-free grid-connected device of wind power generation grid-connected converter - Google Patents
Power control shock-free grid-connected device of wind power generation grid-connected converter Download PDFInfo
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- CN202444283U CN202444283U CN2012200807888U CN201220080788U CN202444283U CN 202444283 U CN202444283 U CN 202444283U CN 2012200807888 U CN2012200807888 U CN 2012200807888U CN 201220080788 U CN201220080788 U CN 201220080788U CN 202444283 U CN202444283 U CN 202444283U
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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
- Y02E10/76—Power conversion electric or electronic aspects
Abstract
The utility model discloses a power control shock-free grid-connected device of a wind power generation grid-connected converter. The device comprises a rectifier, a wave chopper and a power unit module, wherein the output end of the power unit module is connected with a power grid. The power control shock-free grid-connected device of the wind power generation grid-connected converter is characterized by also comprising a converter controller, wherein a signal collecting end of the converter controller is connected with a signal collecting end of the rectifier and a signal collecting end of the power grid, and an output control end of the converter controller is connected with a control end of the wave chopper and a control end of the power unit module. According to the utility model, the power unit module is controlled to input energy to the power grid side according to the sine wave generated by the voltage of the power grid, even though the wind power generation output has great vibration, the energy can not be input to the power grid, the shock to an output contactor, a circuit breaker and power grid side equipment is prevented, and the safety operation of the wind power generation connected grid is ensured; and the connected grid which has continuous power and has no shock is realized truly, and the power control shock-free grid-connected device of the wind power generation grid-connected converter has wide application prospect and application and popularization value.
Description
Technical field
The utility model relates to a kind of wind power-generating grid-connected device, and in particular, relating in particular to a kind of wind power-generating grid-connected current transformer power control does not have the grid-connecting apparatus of impact.
Background technology
At present, in the control of being incorporated into the power networks of generator, realize through adopting total power type direct-drive type current transformer.Under the control of total power type direct-drive type current transformer; The electric energy that wind-driven generator produces is directly inputted in the electrical network after over commutation, inversion; It can intactly all give electrical network with the electric energy that generator produces; This just easily to the generation rush of current of output contactor, circuit breaker and net side apparatus, has a strong impact on the fail safe of equipment and operation of power networks.Therefore, urgent need is a kind of does not work the mischief, does not produce the grid-connecting apparatus of impact to electrical network and equipment.
Summary of the invention
The utility model provides a kind of wind power-generating grid-connected current transformer power control not have the grid-connecting apparatus of impact in order to overcome the shortcoming of above-mentioned technical problem.
The wind power-generating grid-connected current transformer power control of the utility model does not have the grid-connecting apparatus of impact; Comprise the rectifier that is connected with the output of wind-driven generator, the chopper of realizing boost function and the power unit module with invert function, the output of power unit module is connected with electrical network; Its special feature is: also comprise have signals collecting, the inverter controller of data processing and control signal output function; The signals collecting end of this inverter controller all is connected with the signals collecting end of the signals collecting end of rectifier, electrical network, and the output control terminal of inverter controller all is connected with the control end of the control end of chopper and power unit module; The signals collecting end of rectifier is used to gather the voltage swing signal, and the signals collecting end of electrical network is used to gather the phase place and the amplitude of sinusoidal ac.
Rectifier becomes direct current to the alternating current of wind-driven generator output, and copped wave is boosted, inversion so that carry out.Chopper is controlled the voltage of chopper output according to the control signal of inverter controller; Power unit module has the effect of inversion and power control.Inverter controller is obtained synchronizing signal according to line voltage, and according to obtaining the sine wave that phase relation produces standard, sinusoidal wave amplitude is by contravarianter voltage and the decision of line voltage magnitude.The sine wave that inverter controller generates is as the given signal of power unit module, and closed-loop control output signal is followed given signal, thus the control power output.Power unit module is under the control of inverter controller; Both produced the AC signal consistent with the power network signal phase place; And be entered in the electrical network; The also watt level of the signal that is incorporated into the power networks that produces of control when avoiding electrical network and equipment impacted, also maximally utilises the electric energy of wind-force generation.For making power control accomplish that the inversion unit module drops into one by one continuously, realize the wind electric converter power that is incorporated into the power networks is controlled in real time.
The wind power-generating grid-connected current transformer power control of the utility model does not have the grid-connecting apparatus of impact, also comprises being used for host computer that the rotating speed and the torque signal of wind-driven generator are gathered, and the output of this host computer is connected with the input of inverter controller.The electric energy size that the moment of torsion of wind-driven generator and tachyphylaxis go out to produce, relevant with the control signal of power unit module.
The wind power-generating grid-connected current transformer power control of the utility model does not have the grid-connecting apparatus of impact, and the output of said rectifier is connected with the input of chopper, and the output of chopper is connected with the input of power unit module; Power unit module is imported sinusoidal ac in electrical network under the acting in conjunction of chopper and inverter controller.
The wind power-generating grid-connected current transformer power control of the utility model does not have the grid-connecting apparatus of impact, and described inverter controller is made up of microcontroller chip and peripheral module circuit.
The beneficial effect of the utility model is: the utility model is according to the sine wave of mains voltage signal generation standard, and sinusoidal wave amplitude is relevant with the line voltage amplitude with rectifier output busbar voltage, comes the power controlling unit module to the grid side intake; Even the output of wind-driven generator has bigger fluctuation, can fluctuation signal be input in the electrical network yet, avoided impact effectively to output contactor, circuit breaker and grid side equipment, guaranteed wind power-generating grid-connected safe operation; Be to have realized that power truly is continuous, shock-free being incorporated into the power networks.Through measurement, can make that power control is more accurate to the rotating speed and the torque signal of wind-driven generator.
Description of drawings
Fig. 1 is the schematic diagram that the nothing of the utility model is impacted grid-connecting apparatus.
Among the figure: 1 host computer, 2 rectifiers, 3 choppers, 4 power unit modules, 5 electrical networks, 6 inverter controllers, 7 wind-driven generators.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
As shown in Figure 1, the nothing that has provided the utility model is impacted the circuit theory diagrams of grid-connecting apparatus, and it comprises wind-driven generator 7, host computer 1, rectifier 2, chopper 3, power unit module 4, inverter controller 6; It is electric energy that wind-driven generator 7 is used for wind energy transformation, and electric energy output end is connected with the input of rectifier 2; The rotating speed and the moment of torsion of 1 pair of wind-driven generator 7 of host computer detect and are entered in the inverter controller 6.Rectifier 2 is used for the alternating current of output is converted into direct current, and it can adopt diode to carry out rectification; The input of the output of rectifier 2 and chopper 3, chopper 3 is realized the copped wave boosting, adopts typical boost booster circuit to get final product.The input of power unit module 4 is connected with the output of chopper 3, realizes the reversion reaction under the power controlled, and the electric energy with rectification, after boosting controllably is input in the electrical network.
The utility model comes the power controlling unit module to the grid side intake according to the sine wave of the standard that produces, and has avoided the impact to output contactor, circuit breaker and grid side equipment, has guaranteed wind power-generating grid-connected safe operation; Be to have realized that power truly is continuous, shock-free being incorporated into the power networks, have broad application prospects and application and popularization value.
Claims (4)
1. a wind power-generating grid-connected current transformer power control does not have the grid-connecting apparatus of impact; Comprise the rectifier (2) that is connected with the output of wind-driven generator (7), the chopper (3) of realizing boost function and the power unit module (4) with invert function, the output of power unit module is connected with electrical network (5); It is characterized in that: also comprise have signals collecting, the inverter controller (6) of data processing and control signal output function; The signals collecting end of this inverter controller all is connected with the signals collecting end of the signals collecting end of rectifier, electrical network, and the output control terminal of inverter controller all is connected with the control end of the control end of chopper and power unit module; The signals collecting end of rectifier is used to gather the voltage swing signal, and the signals collecting end of electrical network is used to gather the phase place and the amplitude of sinusoidal ac.
2. wind power-generating grid-connected current transformer power control according to claim 1 does not have the grid-connecting apparatus of impact; It is characterized in that: also comprise being used for host computer (1) that the rotating speed and the torque signal of wind-driven generator (7) are gathered, the output of this host computer is connected with the input of inverter controller.
3. wind power-generating grid-connected current transformer power control according to claim 1 and 2 does not have the grid-connecting apparatus of impact; It is characterized in that: the output of said rectifier (2) is connected with the input of chopper (3), and the output of chopper is connected with the input of power unit module (4); Power unit module is imported sinusoidal ac in electrical network (5) under the acting in conjunction of chopper and inverter controller.
4. wind power-generating grid-connected current transformer power control according to claim 1 and 2 does not have the grid-connecting apparatus of impact, and it is characterized in that: described inverter controller (6) is made up of microcontroller chip and peripheral module circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200807888U CN202444283U (en) | 2012-03-07 | 2012-03-07 | Power control shock-free grid-connected device of wind power generation grid-connected converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200807888U CN202444283U (en) | 2012-03-07 | 2012-03-07 | Power control shock-free grid-connected device of wind power generation grid-connected converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202444283U true CN202444283U (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200807888U Expired - Lifetime CN202444283U (en) | 2012-03-07 | 2012-03-07 | Power control shock-free grid-connected device of wind power generation grid-connected converter |
Country Status (1)
| Country | Link |
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| CN (1) | CN202444283U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868492A (en) * | 2014-02-20 | 2015-08-26 | 西门子工厂自动化工程有限公司 | Power control method of grid connected power supply inversion device |
| CN113053203A (en) * | 2021-05-10 | 2021-06-29 | 新能职业培训学校(天津)有限公司 | Low-voltage full-power converter teaching aid |
-
2012
- 2012-03-07 CN CN2012200807888U patent/CN202444283U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868492A (en) * | 2014-02-20 | 2015-08-26 | 西门子工厂自动化工程有限公司 | Power control method of grid connected power supply inversion device |
| CN113053203A (en) * | 2021-05-10 | 2021-06-29 | 新能职业培训学校(天津)有限公司 | Low-voltage full-power converter teaching aid |
| CN113053203B (en) * | 2021-05-10 | 2023-03-14 | 新能职业培训学校(天津)有限公司 | Low-voltage full-power converter teaching aid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: XINFENGGUANG ELECTRONICS TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHANDONG XINFENG PHOTOELECTRIC SCIENCE + TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 272500 Shandong Province Economic Development Zone Jining City Wenshang County Patentee after: Shandong Xinfengguang Electronic Technology Development Co., Ltd. Address before: 272500 Shandong Province Economic Development Zone Jining City Wenshang County Patentee before: Shandong Xinfeng Photoelectric Science & Technology Development Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120919 |
|
| CX01 | Expiry of patent term |