CN202435052U - Wind power converter loop control circuit - Google Patents
Wind power converter loop control circuit Download PDFInfo
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- CN202435052U CN202435052U CN2011205078254U CN201120507825U CN202435052U CN 202435052 U CN202435052 U CN 202435052U CN 2011205078254 U CN2011205078254 U CN 2011205078254U CN 201120507825 U CN201120507825 U CN 201120507825U CN 202435052 U CN202435052 U CN 202435052U
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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
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Abstract
The application discloses a wind power converter loop control circuit, comprising a main air switch control loop (100), a precharge control loop (200), a bus discharge control loop (300), and a control circuit. The main air switch control loop (100) is used for controlling the working state of a main air switch relay unit, the precharge control loop (200) is used for controlling the working state of a precharge contactor (KM1), the bus discharge control loop (300) is used for controlling the working state of a discharge contactor (KM3), and the control circuit is used for controlling the working states of the main air switch control loop (100), the precharge control loop (200) and the bus discharge control loop (300), enabling a main air switch (Q1) or a precharge circuit (3) to be interlocked with a bus discharge circuit (2), so that the main air switch or the precharge circuit and the bus discharge circuit cannot work at the same time, thereby effectively preventing misoperation of a wind power converter main loop, reducing the occurrence of safety accidents, and improving the reliability of a wind power generation convertor.
Description
Technical field
The application relates to electric and electronic technical field, particularly relates to wind electric converter major loop control circuit.
Background technology
Usually be provided with the primary air switch that is incorporated into the power networks, pre-charge circuit and bus discharge circuit in the wind-force generating converter major loop; Wherein, the primary air switch that is incorporated into the power networks is used for the wind-force generating converter circuit is inserted electrical network, the pre-charge circuit buffering that is used to power on; The bus discharge circuit is used for discharging to bus capacitor; This three all adopts relay, contactor as start-up control, and wherein, said bus discharge circuit can not be worked be incorporated into the power networks primary air switch or pre-charge circuit simultaneously; But existing wind-force generating converter circuit controls loop does not have corresponding interlocking control; Cause being incorporated into the power networks primary air switch or pre-charge circuit and bus discharge circuit worked simultaneously if control loop breaks down, and will damage the bus discharge circuit, even produces security incident.Be badly in need of a kind of wind electric converter loop control circuit that primary air switch or pre-charge circuit and bus discharge loop can not be worked simultaneously.
The utility model content
For solving the problems of the technologies described above, the application embodiment provides a kind of wind electric converter loop control circuit, can not work simultaneously to realize primary air switch or pre-charge circuit and bus discharge circuit, and technical scheme is following:
A kind of wind electric converter loop control circuit; Comprise: the primary air switch relay group that is used to control disconnection of primary air switch or closure state; Be used to control the precharge contactor of pre-charge circuit operating state; Be used to control the discharge contactor of bus discharge circuit working state; Also comprise: the primary air switch control circuit that all is parallel to one first both ends of power; Precharge control loop and bus discharge control loop; And control said primary air switch control circuit; The control circuit of precharge control loop and the work of bus discharge control loop; Wherein
Said primary air switch control circuit is used to control the operating state of said primary air switch relay group;
Said precharge control loop is used to control the operating state of said precharge contactor;
Said bus discharge control loop is used to control the operating state of said discharge contactor;
Said control circuit is used for transmitting control signal to primary air switch control circuit, precharge control loop and bus discharge control loop, and said primary air switch or pre-charge circuit and bus discharge circuit interlock can not be worked simultaneously.
Preferably, said primary air switch control circuit comprises: primary air switch relay group, primary air switch control relay group, and discharge contactor state-detection relay;
Said precharge control loop comprises: precharge contactor, precharge contactor control relay, and discharge contactor state-detection relay;
Said bus discharge control loop comprises: discharge contactor, primary air on off state detection relay and precharge contactor state-detection relay, precharge contactor control relay;
The normally closed main contacts of said discharge contactor is connected in the bus discharge circuit, and the main contacts of often opening of said precharge contactor is connected in the pre-charge circuit;
After second normally opened contact of the normally opened contact of the coil of said primary air switch relay group and said primary air switch control relay group and said discharge contactor state-detection relay is connected in series, connect first power supply;
The normally opened contact of the coil of said precharge contactor and said precharge contactor control relay, and after first normally opened contact series connection of discharge contactor state-detection relay, connect said first power supply;
The coil of said discharge contactor and the normally opened contact that detects relay by the normally opened contact of said precharge contactor state-detection relay, primary air on off state; And after the parallel branch series connection of first normally opened contact of precharge contactor control relay parallel connection formation, connect said first power supply.
Preferably, be connected a second source after the series connection of the normally opened contact of the coil of said discharge contactor state-detection relay and said discharge contactor;
Be connected said second source after the series connection of the coil of said precharge contactor state-detection relay and the normally opened contact of said precharge contactor;
The coil that said primary air on off state detects relay be connected said second source after the control switch of the operating state of the said primary air switch of reflection is connected, the control end of said control switch is imported the operating state feedback signal of said primary air switch.
Preferably, said control circuit comprises sample circuit and controller, wherein,
Said sample circuit is used to gather the operating state of each above-mentioned relay and contactor and produce the corresponding feedback signal, and offers said controller;
Said controller is controlled the operating state of each above-mentioned control relay according to the said feedback signal that receives.
Preferably, said primary air switch relay group comprises: tripping relay and closing relay; Said primary air switch control relay comprises: dropout control relay, combined floodgate control relay;
The normally opened contact of the normally opened contact of the coil of said tripping relay and said dropout control relay and discharge contactor state-detection relay is connected in series, and is connected with said first power supply;
The coil of said closing relay is connected with said first power supply with after the normally opened contact of said combined floodgate control relay is connected.
Preferably, also comprise the filter capacitor that is used for filtering in the said wind electric converter major loop, this wind electric converter loop control circuit also comprises: filter capacitor contactor and filter capacitor contactor combined floodgate control relay, wherein,
The main contacts of often opening of said filter capacitor contactor is connected in the loop, said filter capacitor place, is used to control the operating state of said filter capacitor;
The coil of said filter capacitor contactor connects said first power supply with after the normally opened contact of said filter capacitor contactor combined floodgate control relay is connected;
Said control circuit also is used to send control signal to control the operating state of said filter capacitor contactor combined floodgate control relay.
Preferably, said first power supply is the uninterrupted AC power of 220V.
Preferably, said second source is the 24V DC power supply.Technical scheme by above the application embodiment provides is visible; After being connected in parallel, the normally opened contact of the normally opened contact of precharge contactor state-detection relay, primary air on off state detection relay and the normally opened contact of precharge contactor control relay be connected with the coil of discharge contactor; When having realized any one closure in precharge contactor and the primary air switch, the coil of discharge contactor gets electric, and its normally closed main contacts breaks off; The bus discharge circuit breaks off; Guaranteed that bus discharge circuit and primary air switch can not work simultaneously, and bus discharge circuit and pre-charge circuit can not work simultaneously, thereby prevent that effectively the wind electric converter major loop from producing misoperation; Reduce the generation of security incident, improved the reliability of wind-force generating converter.
Description of drawings
In order to be illustrated more clearly in the application embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment that put down in writing among the application, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The wind electric converter main loop circuit sketch map that Fig. 1 provides for the application embodiment;
The circuit diagram of the wind electric converter control loop that Fig. 2 provides for the application embodiment;
Fig. 3 is the corresponding physical circuit sketch map of wind electric converter control loop shown in Figure 2;
The circuit diagram of the state-detection relay in the wind electric converter control loop that Fig. 4 provides for the application embodiment;
The circuit diagram of the control circuit in the wind electric converter loop control circuit that Fig. 5 provides for the application embodiment.
Embodiment
In order to make those skilled in the art person understand the technical scheme among the application better; To combine the accompanying drawing among the application embodiment below; Technical scheme among the application embodiment is carried out clear, intactly description; Obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all should belong to the scope of the application's protection.
See also Fig. 1; Show the wind electric converter main loop circuit schematic diagram that the application embodiment provides; This circuit comprises: convertor circuit unit 1, and bus discharge circuit 2, pre-charge circuit 3, wherein; The AC side of said convertor circuit unit 1 is through primary air switch Q1 incoming transport electrical network; DC side connects said bus discharge circuit 2 through the normally closed main contacts of discharge contactor KM3, and said pre-charge circuit 3 is often opened main contacts through precharge contactor KM1's, is connected in the both sides of said primary air switch Q1 in parallel.
See also Fig. 2; Show the theory diagram of the control circuit in a kind of wind electric converter of the application embodiment loop, this circuit comprises primary air switch control circuit 100, precharge control loop 200 and bus discharge control loop 300; And control circuit (not shown among Fig. 2) wherein
Said primary air switch control circuit 100 is used to control the operating state of primary air switch relay group;
Said precharge control loop 200 is used to control the operating state of said precharge contactor;
Said bus discharge control loop 300 is used to control the operating state of said discharge contactor;
Said control circuit; Be used to control the operating state of said primary air switch control circuit 100, precharge control loop 200 and bus discharge control loop 300; Said primary air switch Q1 and 2 interlockings of bus discharge circuit can not be worked simultaneously, and said pre-charge circuit 3 can not be worked with said bus discharge circuit 2 interlockings simultaneously.
The wind electric converter loop control circuit that present embodiment provides; Relay or contactor interlocking through primary air switch control circuit 100, precharge control loop 200 and bus discharge control loop 300; Thereby said primary air switch Q1 or pre-charge circuit 2 can not be worked simultaneously with bus discharge circuit 3; Can prevent effectively that the wind electric converter major loop from producing misoperation, reduce the generation of security incident, improve the reliability of wind-force generating converter.
See also Fig. 3, show the control circuit physical circuit sketch map in the wind electric converter loop that the application embodiment provides, this circuit mainly comprises: primary air switch control circuit 100, and precharge control loop 200 and bus discharge control loop 300, wherein,
Primary air switch control circuit 100 mainly comprises: primary air switch relay group, primary air switch control relay group; And discharge contactor state-detection relay K A6; Wherein, primary air switch relay group comprises tripping relay YU and closing relay YC; Primary air switch control relay group comprises dropout control relay KA5, combined floodgate control relay KA7.
Bus discharge control loop 300 mainly comprises: discharge contactor KM3, precharge contactor control relay KA4, primary air on off state detect relay K A9 and precharge contactor state-detection relay K A8.
Concrete; The normally opened contact of said precharge contactor state-detection relay K A8 and primary air on off state detect the normally opened contact of relay K A9; And this three of first normally opened contact of precharge contactor control relay KA4 is connected in parallel; After the coil of parallel branch that obtains and discharge contactor KM3 is connected in series, be connected with the first power supply Vac;
First normally opened contact of said discharge contactor state-detection relay K A6, second normally opened contact of said precharge contactor control relay KA4, and after the coil of precharge contactor KM1 connects successively, be connected with the said first power supply Vac;
The normally opened contact of the coil of tripping relay YU, dropout control relay KA5, and after second normally opened contact of discharge contactor state-detection relay K A6 is connected in series successively, be connected with the said first power supply Vac.
The coil of closing relay YC is connected with the said first power supply Vac with the normally opened contact series connection back of combined floodgate control relay KA7.
See also Fig. 4; Show the circuit theory diagrams of the state-detection relay of the wind electric converter loop control circuit that the application embodiment provides, this circuit mainly comprises: discharge contactor state-detection relay K A6, precharge contactor state-detection relay K A8, primary air on off state detect relay K A9.
The coil of said discharge contactor state-detection relay K A6 is with after the normally opened contact of said discharge contactor KM3 is connected, and VDD links to each other with second source;
The coil of said precharge contactor state-detection relay K A8 is with after the normally opened contact of said precharge contactor KM1 is connected, and VDD links to each other with second source;
The coil that said primary air on off state detects relay K A9 is with after the control switch K1 of the operating state that reflects said primary air switch Q1 connects; VDD links to each other with second source; The control end input of said control switch K1 has the feedback signal of said primary air switch Q1 operating state, when said primary air switch Q1 is closed, and output corresponding feedback signal; It is closed to control said control switch K1, thereby the coil that makes the primary air switch detect relay K A9 gets.When said primary air switch Q1 broke off, output corresponding feedback signal was controlled said control switch K1 and is broken off, and made said primary air on off state detect relay K A9 dead electricity.
See also Fig. 5, show the control circuit schematic diagram of the control relay in the wind electric converter loop control circuit that the application embodiment provides, this circuit comprises sample circuit 400, controller 500.
The output of said controller 500 is connected with the coil of precharge contactor control relay KA4, the coil of dropout control relay KA5, the coil of combined floodgate control relay KA7 respectively.
Said sample circuit 400 is used to gather the operating state of above-mentioned each contactor and primary air switch relay group, produces the corresponding feedback signal and offers said controller 500.
Concrete, this sample circuit is used to produce the feedback signal of the operating state that reflects discharge contactor KM3, primary air switch Q1, precharge contactor KM1.
Said controller 500 is used for the operating state according to said each control relay of feedback signal control that receives.
Referring to Fig. 1-Fig. 5, the course of work of the wind electric converter loop control circuit that the application embodiment provides is following:
1) power up
After powering on, the transmit control signal coil that makes precharge contactor control relay KA4 of controller 500 gets electricly, makes first normally opened contact, the equal adhesive of second normally opened contact of the precharge contactor control relay KA4 among Fig. 3;
As shown in Figure 3, first, second normally opened contact adhesive of precharge contactor control relay KA4, the coil of feasible discharge contactor KM3 gets electric, thereby the normally closed main contacts of discharge contactor KM3 shown in Figure 1 is broken off, and then the bus discharge circuit is broken off;
Meanwhile, the coil of said discharge contactor KM3 get electric after, the coil of discharge contactor state-detection relay K A6 gets; Make that first normally opened contact of discharge contactor state-detection relay K A6 is closed; At this moment, second normally opened contact of precharge contactor control relay KA4 is all closed with first normally opened contact of discharge contactor state-detection relay K A6, makes the coil of precharge contactor KM1 get; Thereby make pre-charge circuit work, carry out precharge;
The normally opened contact of said discharge contactor state-detection relay K A6; Be connected in series with the coil of said precharge contactor KM1; Only at precharge contactor control relay KA4 and discharge contactor state-detection relay K A6 all after the adhesive; The main contacts of often opening of precharge contactor KM1 could adhesive, has guaranteed that pre-charge circuit could be worked after the bus discharge circuit breaks off.
As shown in Figure 4, precharge contactor KM1 get electric after, its normally opened contact adhesive, it is electric that the coil of precharge contactor state-detection relay K A8 is got, and makes the normally opened contact adhesive of the precharge contactor state-detection relay K A8 among Fig. 3.
Pre-charge circuit carries out in the precharge process; When said sample circuit 400 collected DC bus-bar voltage greater than preset value, said controller 500 produces control signals, and that primary air switch dropout control relay KA5 is got was electric and since before the discharge contactor state-detection relay K A6 electric adhesive; So primary air switch tripping relay YU gets; Controller transmits control signal behind the Preset Time, and that primary air switch combined floodgate control relay KA7 is got is electric, the normally opened contact adhesive of primary air switch combined floodgate control relay KA7, thus primary air switch closing relay YC is got; At this moment; Primary air switch Q1 closes a floodgate, thereby after having realized precharge contactor KM1 adhesive, primary air switch Q1 could closed interlocking logic.
As shown in Figure 4, after the primary air switch Q1 closure, said sample circuit 400 produces and the corresponding feedback signal of operating state of primary air switch Q1 makes control switch K1 closed, and then primary air on off state detection relay K A9 is got.
After sample circuit 400 collects the normal operating state of closing a floodgate of primary air switch Q1; Controller 500 produces control signal breaks off combined floodgate control relay KA7; Because primary air switch Q1 can only pass through the release separating brake, must break off combined floodgate control relay KA7 before the separating brake.Simultaneously, controller 500 sends control signal breaks off precharge contactor control relay KA4, thereby precharge contactor KM1 power down is broken off, and makes pre-charge circuit stop precharge.As shown in Figure 4, after precharge contactor KM1 breaks off, precharge contactor state-detection relay K A8 outage.
Because the normally opened contact of precharge contactor state-detection relay K A8 and primary air on off state detect the normally opened contact of relay K A9 and are connected in series in the AC power two ends with the coil of the contactor KM3 that discharges after parallelly connected; Thereby realized as long as any one adhesive among precharge contactor KM1 or the primary air switch Q1 can both guarantee that the bus discharge circuit breaks off.
So far, it is normal that sample circuit 400 detects all feedback signals, and then power up finishes, and can begin the current transformer operation.
2) electric process under
When needs cut off the power supply, controller 500 transmitted control signal primary air switch dropout control relay KA5 is broken off, and makes primary air switch Q1 dropout separating brake;
As shown in Figure 4, behind the primary air switch Q1 separating brake, control switch K1 breaks off; So the primary air on off state detects relay K A9 outage, because before this, precharge contactor state-detection relay K A8 and precharge contactor control relay KA4 break off; Therefore; Discharge contactor KM3 power down, its normally closed main contacts is closed, and bus discharge circuit 2 is started working.Thereby after realizing that precharge contactor KM1 and primary air switch Q1 break off; The normally closed main contacts of discharge contactor KM3 is closed; The bus discharge circuit just can be started working, and has realized the interlocking logic between bus discharge circuit and pre-charge circuit and the primary air switch Q1.
Preferably, referring to Fig. 1, can also comprise three-phase filter capacitor C in the said wind electric converter major loop, this filter capacitor C is connected in parallel on said convertor circuit unit AC side through the normally opened contact of filter capacitor contactor KM2, is used for filtering harmonic.
Also comprise in the main control circuit of said wind electric converter loop: filter capacitor contactor control relay KA10; Referring to Fig. 3, the coil of said filter capacitor contactor KM2 is connected with AC power with the normally opened contact series connection back of filter capacitor contactor control relay KA10.
Said sample circuit 400 also is used to gather the feedback signal of the operating state that reflects filter capacitor contactor KM2.
The coil of said filter capacitor contactor control relay KA10 links to each other with controller 500; In the power up; After sample circuit 400 was stable to bus, controller 500 transmits control signal, and that filter capacitor contactor control relay KA10 is got was electric, and the normally opened contact of this filter capacitor contactor control relay KA10 is closed; It is electric that the coil of filter capacitor contactor KM2 is got, thereby three-phase filter capacitor C is inserted in the wind electric converter main loop circuit.
When needs cut off the power supply, controller 500 transmitted control signal and makes filter capacitor contactor control relay KA10 outage, thereby filter capacitor contactor KM2 is broken off, and then the three-phase filter capacitor is broken off.
The first power supply Vac in the foregoing description can be the 220V ac uninterrupted power supply, and said second source VDD can be the 24V DC power supply.
The above only is the application's a embodiment; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the application's principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the application's protection range.
Claims (8)
1. wind electric converter loop control circuit; Comprise: the primary air switch relay group that is used to control primary air switch (Q1) disconnection or closure state; Be used to control the precharge contactor (KM1) of pre-charge circuit (3) operating state; Be used to control the discharge contactor (KM3) of bus discharge circuit (2) operating state; It is characterized in that; Also comprise: the primary air switch control circuit (100) that all is parallel to one first power supply (Vac) two ends; Precharge control loop (200) and bus discharge control loop (300); And control said primary air switch control circuit (100); The control circuit of precharge control loop (200) and bus discharge control loop (300) work; Wherein
Said primary air switch control circuit (100) is used to control the operating state of said primary air switch relay group;
Said precharge control loop (200) is used to control the operating state of said precharge contactor (KM1);
Said bus discharge control loop (300) is used to control the operating state of said discharge contactor (KM3);
Said control circuit is used for transmitting control signal to primary air switch control circuit (100), precharge control loop (200) and bus discharge control loop (300), and said primary air switch (Q1) or pre-charge circuit (3) and bus discharge circuit (2) interlocking can not be worked simultaneously.
2. wind electric converter loop control circuit according to claim 1 is characterized in that,
Said primary air switch control circuit (100) comprising: primary air switch relay group, primary air switch control relay group, and discharge contactor state-detection relay (KA6);
Said precharge control loop (200) comprising: precharge contactor (KM1), precharge contactor control relay (KA4), and discharge contactor state-detection relay (KA6);
Said bus discharge control loop (300) comprising: discharge contactor (KM3), primary air on off state detection relay (KA9) and precharge contactor state-detection relay (KA8), precharge contactor control relay (KA4);
The normally closed main contacts of said discharge contactor (KM3) is connected in the bus discharge circuit (2), and the main contacts of often opening of said precharge contactor (KM1) is connected in the pre-charge circuit (3);
After the normally opened contact of the coil of said primary air switch relay group and said primary air switch control relay group and second normally opened contact of said discharge contactor state-detection relay (KA6) are connected in series, connect first power supply (Vac);
The normally opened contact of the coil of said precharge contactor (KM1) and said precharge contactor control relay (KA4), and after the series connection of first normally opened contact of discharge contactor state-detection relay (KA6), connect said first power supply (Vac);
The coil of said discharge contactor (KM3) and the normally opened contact that detects relay (KA9) by the normally opened contact of said precharge contactor state-detection relay (KA8), primary air on off state; And after the parallel branch series connection of first normally opened contact of precharge contactor control relay (KA4) parallel connection formation, connect said first power supply (Vac).
3. wind electric converter loop control circuit according to claim 2 is characterized in that,
Be connected a second source (VDD) after the normally opened contact series connection of the coil of said discharge contactor state-detection relay (KA6) and said discharge contactor (KM3);
Be connected said second source (VDD) after the normally opened contact series connection of the coil of said precharge contactor state-detection relay (KA8) and said precharge contactor (KM1);
The coil that said primary air on off state detects relay (KA9) be connected said second source (VDD) after the control switch (K1) of the operating state of the said primary air switch of reflection (Q1) is connected, the control end of said control switch (K1) is imported the operating state feedback signal of said primary air switch (Q1).
4. wind electric converter loop control circuit according to claim 3 is characterized in that, said control circuit comprises sample circuit (400) and controller (500), wherein,
Said sample circuit is used to gather the operating state of each above-mentioned relay and contactor and produce the corresponding feedback signal, and offers said controller (500);
Said controller (500) is controlled the operating state of each above-mentioned control relay according to the said feedback signal that receives.
5. wind electric converter loop control circuit according to claim 2 is characterized in that,
Said primary air switch relay group comprises: tripping relay (YU) and closing relay (YC); Said primary air switch control relay comprises: dropout control relay (KA5), combined floodgate control relay (KA7);
The normally opened contact of the normally opened contact of the coil of said tripping relay (YU) and said dropout control relay (KA5) and discharge contactor state-detection relay (KA6) is connected in series, and is connected with said first power supply (Vac);
The coil of said closing relay (YC) is connected with said first power supply (Vac) with after the normally opened contact of said combined floodgate control relay (KA7) is connected.
6. wind electric converter loop control circuit according to claim 1; It is characterized in that; Also comprise the filter capacitor (C) that is used for filtering in the said wind electric converter major loop; This wind electric converter loop control circuit also comprises: filter capacitor contactor (KM2) and filter capacitor contactor combined floodgate control relay (KA10), wherein
The main contacts of often opening of said filter capacitor contactor (KM2) is connected in the loop, said filter capacitor (C) place, is used to control the operating state of said filter capacitor (C);
The coil of said filter capacitor contactor (KM2) connects said first power supply (Vac) with after the normally opened contact of said filter capacitor contactor combined floodgate control relay (KA10) is connected;
Said control circuit also is used to send control signal to control the operating state of said filter capacitor contactor combined floodgate control relay (KA10).
7. according to each described wind electric converter loop control circuit of claim 1 to 6, it is characterized in that said first power supply (Vac) is the uninterrupted AC power of 220V.
8. wind electric converter loop control circuit according to claim 3 is characterized in that, said second source (VDD) is the 24V DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205078254U CN202435052U (en) | 2011-12-08 | 2011-12-08 | Wind power converter loop control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205078254U CN202435052U (en) | 2011-12-08 | 2011-12-08 | Wind power converter loop control circuit |
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| CN202435052U true CN202435052U (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205078254U Expired - Fee Related CN202435052U (en) | 2011-12-08 | 2011-12-08 | Wind power converter loop control circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103353561A (en) * | 2013-06-24 | 2013-10-16 | 国家电网公司 | System and method for detecting alternating-current circuit of wind turbine generator |
| CN106505728A (en) * | 2016-12-26 | 2017-03-15 | 天津瑞能电气有限公司 | Power supply control loop of the wind-powered electricity generation double-feed current transformer in grid-connected |
| CN106771851A (en) * | 2016-11-24 | 2017-05-31 | 中车长春轨道客车股份有限公司 | Traction convertor high voltage dc bus safeguard protection method of testing |
| CN110649790A (en) * | 2018-06-25 | 2020-01-03 | 北京金风科创风电设备有限公司 | Control method and control device of wind power converter and wind power converter |
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2011
- 2011-12-08 CN CN2011205078254U patent/CN202435052U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353561A (en) * | 2013-06-24 | 2013-10-16 | 国家电网公司 | System and method for detecting alternating-current circuit of wind turbine generator |
| CN103353561B (en) * | 2013-06-24 | 2016-09-28 | 国家电网公司 | A kind of alternating-current loops of wind generation set detecting system and detection method thereof |
| CN106771851A (en) * | 2016-11-24 | 2017-05-31 | 中车长春轨道客车股份有限公司 | Traction convertor high voltage dc bus safeguard protection method of testing |
| CN106771851B (en) * | 2016-11-24 | 2020-05-29 | 中车长春轨道客车股份有限公司 | Traction converter high-voltage direct-current bus safety protection test method |
| CN106505728A (en) * | 2016-12-26 | 2017-03-15 | 天津瑞能电气有限公司 | Power supply control loop of the wind-powered electricity generation double-feed current transformer in grid-connected |
| CN106505728B (en) * | 2016-12-26 | 2023-08-04 | 天津瑞源电气有限公司 | Power supply control loop of wind power doubly-fed converter in grid connection |
| CN110649790A (en) * | 2018-06-25 | 2020-01-03 | 北京金风科创风电设备有限公司 | Control method and control device of wind power converter and wind power converter |
| CN110649790B (en) * | 2018-06-25 | 2022-07-12 | 北京金风科创风电设备有限公司 | Control method and control device of wind power converter and wind power converter |
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