CN204046433U - A kind of wind turbine generator direct-flow distribution system - Google Patents
A kind of wind turbine generator direct-flow distribution system Download PDFInfo
- Publication number
- CN204046433U CN204046433U CN201420512113.5U CN201420512113U CN204046433U CN 204046433 U CN204046433 U CN 204046433U CN 201420512113 U CN201420512113 U CN 201420512113U CN 204046433 U CN204046433 U CN 204046433U
- Authority
- CN
- China
- Prior art keywords
- igbt
- circuit
- way
- wind turbine
- module
- 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.)
- Active
Links
Classifications
-
- 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
Landscapes
- Control Of Eletrric Generators (AREA)
Abstract
The utility model discloses a kind of wind turbine generator direct-flow distribution system, comprise the first two-way DC/DC circuit, combined transformation circuit, DC/AC module and DC/DC module, the first two-way input of DC/DC circuit is connected with the DC bus of wind power generator unit frequency converter, the output of the first two-way DC/DC circuit by distribution DC bus respectively with the input of combined transformation circuit, the input of DC/AC module, the input of DC/DC module is connected, the output of combined transformation circuit is connected with pitch motor, the output of DC/AC module respectively with the yaw system of wind turbine generator, water-cooling system is connected, the output of DC/DC module respectively with the control system of wind turbine generator, illuminator is connected.The utility model eliminates the auxiliary transformer in conventional electrical distribution system, reduces voltage fluctuation and low-voltage to the impact of control system, reduces the volume of unit transformer, saved cost.
Description
Technical field
The utility model relates to wind-powered electricity generation field, particularly a kind of wind turbine generator direct-flow distribution system.
Background technology
In traditional wind turbine generator distribution system, generally powered to control system by alternating current, this supply power mode is easily by under the impact, particularly low voltage condition of power network fluctuation, and control system easily exception occurs.
Traditional wind turbine generator alternating-current system as shown in Figure 1, the main electrical system of wind turbine generator is represented in figure, wind energy transforms into the alternating current of frequency, amplitude instability through impeller, generator 11, again by frequency converter 12, transformer 13 adjust with boost after feed-in electrical network, export three-phase alternating-current supply by electrical network 14 and auxiliary transformer 15, be supplied to pitch-controlled system, yaw system, water-cooling system, illuminator and PLC control system etc.For the problem that alternating-current system under solution low voltage condition easily breaks down, usually can configure an EPS supply unit, but the duration of EPS supply unit is not long, also can increase unit cost simultaneously.
Utility model content
In order to solve the problems of the technologies described above, the utility model provides that a kind of structure is simple, cost is low, the reliable wind turbine generator direct-flow distribution system of working stability.
The technical scheme that the utility model solves the problem is: a kind of wind turbine generator direct-flow distribution system, comprise the first two-way DC/DC circuit, combined transformation circuit, DC/AC module and DC/DC module, the described first two-way input of DC/DC circuit is connected with the DC bus of wind power generator unit frequency converter, the output of the first two-way DC/DC circuit by distribution DC bus respectively with the input of combined transformation circuit, the input of DC/AC module, the input of DC/DC module is connected, the output of described combined transformation circuit is connected with pitch motor, the output of described DC/AC module respectively with the yaw system of wind turbine generator, water-cooling system is connected, the output of described DC/DC module respectively with the control system of wind turbine generator, illuminator is connected.
In above-mentioned wind turbine generator direct-flow distribution system, described combined transformation circuit comprises DC/AC inverter circuit and the second two-way DC/DC circuit, the input of described DC/AC inverter circuit is connected with the output of the first two-way DC/DC circuit, its output is connected with pitch motor, one end of described second two-way DC/DC circuit is connected with the output of the first two-way DC/DC circuit, the input of DC/AC inverter circuit, and the other end is connected with back-up source.
In above-mentioned wind turbine generator direct-flow distribution system, described first two-way DC/DC circuit comprises the first igbt, second igbt, first diode, second diode and the first resistance, the collector electrode of described first igbt is connected with frequency changer direct current bus, its emitter connects distribution DC bus through the first resistance, the positive pole of described first diode is connected with the emitter of the first igbt, its negative pole is connected with the collector electrode of the first igbt, the collector electrode of described second igbt is connected with the collector electrode of the first igbt, its emitter is connected with distribution DC bus, the positive pole of described second diode is connected with the emitter of the second igbt, its negative pole is connected with the collector electrode of the second igbt.
In above-mentioned wind turbine generator direct-flow distribution system, described second two-way DC/DC circuit comprises the 3rd igbt, 4th igbt, 3rd diode, 4th diode and the second resistance, the collector electrode of described 3rd igbt is connected with distribution DC bus, its emitter connects the positive pole of back-up source through the second resistance, the positive pole of described 3rd diode is connected with the emitter of the 3rd igbt, its negative pole is connected with the collector electrode of the 3rd igbt, the collector electrode of described 4th igbt is connected with the collector electrode of the 3rd igbt, its emitter is connected with the negative pole of back-up source, the positive pole of described 4th diode is connected with the emitter of the 4th igbt, its negative pole is connected with the collector electrode of the 4th igbt.
The beneficial effects of the utility model are:
1, input of the present utility model connects the DC bus of wind power generator unit frequency converter, by giving the alternating current-direct current load supplying of wind turbine generator after the first two-way DC/DC circuit, eliminate the auxiliary transformer in conventional electrical distribution system, reduce voltage fluctuation and low-voltage to the impact of control system, reduce the volume of unit transformer, save cost;
2, the utility model is by two-way DC/DC circuit to the back-up source charging in wheel hub, and back-up source is also powered to the driver of pitch-controlled system by two-way DC/DC circuit, reduces the capacity of power supply, has saved manufacturing cost;
What 3, the utility model can adjust each load according to load running situation opens order, reduces the object of power to reach.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of traditional wind group alternating-current system.
Fig. 2 is structured flowchart of the present utility model.
Fig. 3 is the circuit diagram of two-way DC/DC circuit in Fig. 2.
Fig. 4 is the circuit diagram of combined transformation circuit in Fig. 2.
Fig. 5 is work catenation principle figure of the present utility model.
Fig. 6 is the circuit diagram of AC/DC rectifier in Fig. 5.
Fig. 7 is the circuit diagram of DC/AC inverter in Fig. 5.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in Figure 2, the utility model comprises the first two-way DC/DC circuit 1, combined transformation circuit 2, DC/AC module 3 and DC/DC module 4, the described first two-way input of DC/DC circuit 1 is connected with the DC bus of wind power generator unit frequency converter, the output of the first two-way DC/DC circuit 1 by distribution DC bus respectively with the input of combined transformation circuit 2, the input of DC/AC module 3, the input of DC/DC module 4 is connected, the output of described combined transformation circuit 2 is connected with pitch motor, the output of described DC/AC module 3 respectively with the yaw system of wind turbine generator, water-cooling system is connected, the output of described DC/DC module 4 respectively with the control system of wind turbine generator, illuminator is connected.
As shown in Figure 3, above-mentioned first two-way DC/DC circuit 1 comprises the first igbt V1, second igbt V2, first diode D1, second diode D2 and the first resistance R1, the collector electrode of described first igbt V1 is connected with frequency changer direct current bus, its emitter connects distribution DC bus through the first resistance R1, the positive pole of described first diode D1 is connected with the emitter of the first igbt V1, its negative pole is connected with the collector electrode of the first igbt V1, the collector electrode of described second igbt V2 is connected with the collector electrode of the first igbt V1, its emitter is connected with distribution DC bus, the positive pole of described second diode D2 is connected with the emitter of the second igbt V2, its negative pole is connected with the collector electrode of the second igbt V2.
As shown in Figure 4, combinations thereof translation circuit 2 comprises DC/AC inverter circuit 5, second two-way DC/DC circuit 6, back-up source 7 and feedback grid device 8, the input of described DC/AC inverter circuit 5 is connected with the output of the first two-way DC/DC circuit 1, its output is connected with pitch motor, described feedback grid device 8 is located between the input of DC/AC inverter circuit 5 and the output of the first two-way DC/DC circuit 1, described second two-way DC/DC circuit 6 comprises the 3rd igbt V3, 4th igbt V4, 3rd diode D3, 4th diode D4 and the second resistance R2, the collector electrode of described 3rd igbt V3 and distribution DC bus, the input of DC/AC inverter circuit 5 is connected, its emitter connects the positive pole of back-up source 7 through the second resistance R2, the positive pole of described 3rd diode D3 is connected with the emitter of the 3rd igbt V3, its negative pole is connected with the collector electrode of the 3rd igbt V3, the collector electrode of described 4th igbt V4 is connected with the collector electrode of the 3rd igbt V3, its emitter is connected with the negative pole of back-up source 7, the positive pole of described 4th diode D4 is connected with the emitter of the 4th igbt V4, its negative pole is connected with the collector electrode of the 4th igbt V4.
As shown in Figure 5, during work, this distribution system is connected with the DC bus of wind power generator unit frequency converter.The AC/DC rectifier mentioned in Fig. 5, the circuit diagram of DC/AC inverter are shown in Fig. 6, Fig. 7 respectively.
Operation principle of the present utility model is as follows: as shown in Figure 2, frequency changer direct current bus power supply exports on distribution DC bus through the first two-way DC/DC circuit 1, power to the AC load such as yaw system, water-cooling system by DC/AC module 3 again, powered to DC load by DC/DC module 4, as shown in Figure 4, pitch-controlled system is powered, and combines to realize with DC/AC inverter 5 by the second two-way DC/DC circuit 6, under normal circumstances, distribution DC bus power supply is powered to pitch-controlled system through DC/AC inverter 5; When DC bus power failure, stand-by power supply 7 (battery etc.) is powered to pitch motor by the second two-way DC/DC circuit 6; When stand-by power supply 7 undertension, DC bus is charged to stand-by power supply by the second two-way DC/DC circuit 6.When pitch motor is shut down or slow down, pitch-controlled system passes through feedback grid device 8 by energy-feedback power grid, to keep direct voltage constant.
When heavy load is run (during as the action simultaneously of driftage ventilating system), this distribution system can adjust opening sequentially of load, starts the high-power ruuning situation caused to avoid multiple load simultaneously, thus reduces power.The sequential control of opening of load realizes by the situation of monitoring each telecontrol equipment, after a system startup is complete, starts to start next system.Because subsystem stops bringing braking energy source, open and stop subsystem section carrying out at one time.
Claims (4)
1. a wind turbine generator direct-flow distribution system, it is characterized in that: comprise the first two-way DC/DC circuit, combined transformation circuit, DC/AC module and DC/DC module, the described first two-way input of DC/DC circuit is connected with the DC bus of wind power generator unit frequency converter, the output of the first two-way DC/DC circuit by distribution DC bus respectively with the input of combined transformation circuit, the input of DC/AC module, the input of DC/DC module is connected, the output of described combined transformation circuit is connected with pitch motor, the output of described DC/AC module respectively with the yaw system of wind turbine generator, water-cooling system is connected, the output of described DC/DC module respectively with the control system of wind turbine generator, illuminator is connected.
2. wind turbine generator direct-flow distribution system as claimed in claim 1, it is characterized in that: described combined transformation circuit comprises DC/AC inverter circuit and the second two-way DC/DC circuit, the input of described DC/AC inverter circuit is connected with the output of the first two-way DC/DC circuit, its output is connected with pitch motor, one end of described second two-way DC/DC circuit is connected with the output of the first two-way DC/DC circuit, the input of DC/AC inverter circuit, and the other end is connected with back-up source.
3. wind turbine generator direct-flow distribution system as claimed in claim 2, it is characterized in that: described first two-way DC/DC circuit comprises the first igbt, second igbt, first diode, second diode and the first resistance, the collector electrode of described first igbt is connected with frequency changer direct current bus, its emitter connects distribution DC bus through the first resistance, the positive pole of described first diode is connected with the emitter of the first igbt, its negative pole is connected with the collector electrode of the first igbt, the collector electrode of described second igbt is connected with the collector electrode of the first igbt, its emitter is connected with distribution DC bus, the positive pole of described second diode is connected with the emitter of the second igbt, its negative pole is connected with the collector electrode of the second igbt.
4. wind turbine generator direct-flow distribution system as claimed in claim 3, it is characterized in that: described second two-way DC/DC circuit comprises the 3rd igbt, 4th igbt, 3rd diode, 4th diode and the second resistance, the collector electrode of described 3rd igbt is connected with distribution DC bus, its emitter connects the positive pole of back-up source through the second resistance, the positive pole of described 3rd diode is connected with the emitter of the 3rd igbt, its negative pole is connected with the collector electrode of the 3rd igbt, the collector electrode of described 4th igbt is connected with the collector electrode of the 3rd igbt, its emitter is connected with the negative pole of back-up source, the positive pole of described 4th diode is connected with the emitter of the 4th igbt, its negative pole is connected with the collector electrode of the 4th igbt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420512113.5U CN204046433U (en) | 2014-09-05 | 2014-09-05 | A kind of wind turbine generator direct-flow distribution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420512113.5U CN204046433U (en) | 2014-09-05 | 2014-09-05 | A kind of wind turbine generator direct-flow distribution system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204046433U true CN204046433U (en) | 2014-12-24 |
Family
ID=52247056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420512113.5U Active CN204046433U (en) | 2014-09-05 | 2014-09-05 | A kind of wind turbine generator direct-flow distribution system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204046433U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107615635B (en) * | 2015-04-10 | 2020-02-14 | Epc动力公司 | Reconfigurable power converter |
-
2014
- 2014-09-05 CN CN201420512113.5U patent/CN204046433U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107615635B (en) * | 2015-04-10 | 2020-02-14 | Epc动力公司 | Reconfigurable power converter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201247964Y (en) | Power supply for variable pitch system | |
| CN203674793U (en) | On-line power frequency uninterrupted power supply | |
| CN204179989U (en) | Based on the scene oil complementary power generation system of DC bus | |
| CN104734322A (en) | Energy storage charging station power supply system for off-grid new energy power generation | |
| CN103023344A (en) | Universal smart grid power electronic device | |
| CN107546830A (en) | A kind of super capacitor charger of the integrated pitch control based on DSP | |
| CN203027153U (en) | Universal smart power grid power electronic device | |
| CN202172281U (en) | Grid-connected wind generating set | |
| CN105978008A (en) | Flow battery energy storage system with wind field black-start function and work method thereof | |
| CN104600831A (en) | Inverter auxiliary power supply system and method | |
| CN114204567A (en) | Light storage integrated power supply system and method based on alternating current-direct current hybrid power supply | |
| CN103427729A (en) | Rod pumped well group control system based on direct current bus | |
| CN114156862A (en) | Optical storage direct current micro-grid technology of oil pumping unit | |
| CN203199848U (en) | Energy feedback type solar elevator | |
| CN104300565A (en) | Pitch system and power supply method of pitch system | |
| CN204046433U (en) | A kind of wind turbine generator direct-flow distribution system | |
| CN203632335U (en) | Power supply of wind power variable pitch control system with redundant design | |
| CN107298025B (en) | Urban rail transit renewable energy management system | |
| CN216121816U (en) | Hybrid energy storage power supply device | |
| CN105762913A (en) | Micro grid system | |
| CN202424293U (en) | Power supply system of vanadium battery power supply | |
| CN205248900U (en) | Incessant control source of wind generating set feather system | |
| CN204179682U (en) | For the energy storage type excitation converter of speed-varying frequency constant dual feedback wind power generation system | |
| CN203883469U (en) | Double-fed wind generation set converter topological structure for flexible direct-current electricity transmission system | |
| CN206060349U (en) | A kind of photovoltaic generating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |