CN203278264U - Wind power generator group energy transmission device - Google Patents
Wind power generator group energy transmission device Download PDFInfo
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- CN203278264U CN203278264U CN2013202543520U CN201320254352U CN203278264U CN 203278264 U CN203278264 U CN 203278264U CN 2013202543520 U CN2013202543520 U CN 2013202543520U CN 201320254352 U CN201320254352 U CN 201320254352U CN 203278264 U CN203278264 U CN 203278264U
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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 wind power generator group energy transmission device comprising a power generator, a current transformer and a grid-side transformer which are connected in turn. The current transformer comprises a three-phase rectifying module, a first sub current transformer and a second sub current transformer. According to the technical scheme, a series type cascade connection is formed between the first sub current transformer and the second sub current transformer via a common ground connection. The voltage borne by each sub current transformer is reduced to half of the output voltage of the conventional three-phase rectifying module so that voltage level is lowered and existing full control type power electronic devices are facilitated to select. Besides, each sub current transformer is formed by multiple boosting inversion modules in parallel connection so that a function of parallel shunting is realized, current level needed by power electronic power devices is lowered and the existing full control type power electronic devices are facilitated to select. According to capacity of a wind power generator group, appropriate number of rectifying modules and boosting inversion modules are selected so as to meet design requirements of capacity. The wind power generator group energy transmission device is applicable to a single large-capacity wind power generator group.
Description
[technical field]
The utility model relates to a kind of wind turbine generator energy transform device, belongs to the wind power technology field.
[background technology]
along with the expanding economy energy has become important strategic resource, traditional coal, oil, natural gas is all the ability that non-renewable energy resources do not possess sustainable use, always there is exhausted one day, under this background with wind energy, solar energy etc. become new selection for the new forms of energy of representative, the new forms of energy strategy also has been thus lifted to a new height, wherein especially obtained unprecedented development with the exploitation of wind energy, wind turbine generator has also experienced the development of advancing by leaps and bounds as the executor who with wind energy transformation is electric energy, from once tens kilowatts of units again to the megawatt unit, single-machine capacity is more and more higher.
In wind-driven generator, wind energy is to absorb energy and be converted into the kinetic energy of the rotation of variation by impeller and blade, the kinetic energy of rotation becomes the electric energy of voltage and frequency fluctuation by generator, current transformer becomes voltage and frequency to meet the power delivery of electrical network standard to electrical network the electric energy conversion that changes.At this process apoplexy owner controller, the pitch-controlled system of complete machine, yaw system, lubricating system etc. are controlled, and according to the variation of wind speed, complete machine power is regulated.
In such wind-powered electricity generation unit energy transmission system, the Choice and design of current transformer is the Major Difficulties of realizing.Along with the development of single-machine capacity high-power, due to the restriction of power electronic power device voltage and current grade, high-power converter adopts the mode of a plurality of sub-current transformer serial or parallel connections to expand a liter appearance composition usually.High-power converter also need be considered it in wind-powered electricity generation unit particular application except self Basic Design, the availability under its fault for example, the extensibility of high-power converter, the modularization of sub-current transformer etc.
What kind of mode could design better current transformer in wind-powered electricity generation unit energy transmission system in, each researches and develops the designer, and the benevolent see benevolence and the wise see wisdom, designed the current transformer of various topological forms actually.
[utility model content]
The utility model is for the requirement of the actual application background of large capacity wind-powered electricity generation unit, a kind of wind turbine generator energy transform device is provided, on the one hand, between the first sub-current transformer and the second sub-current transformer by be connected to form the tandem cascade commonly, the voltage that every individual sub-current transformer bears is reduced to half of original three phase rectifier module output voltage, thereby electric pressure is reduced, conveniently choose existing power electronics and entirely control device.
On the other hand, every sub-current transformer is by several inversion modules that boost composition that is connected in parallel, can play shunting action in parallel, reduced the current class of required electric power electronic power components, conveniently choose existing power electronics and entirely control device, according to the capacity of wind turbine generator, select the suitable rectification module of quantity, inversion module boosts, to reach the Capacity design requirement, it is applicable to the jumbo wind turbine generator of unit.
For achieving the above object, the utility model has adopted following technical proposal:
a kind of wind turbine generator energy transform device, include the generator 1 that connects in turn, current transformer 2, and net side transformer 3, described current transformer 2 includes three phase rectifier module 21, the the first sub-current transformer 22 that is connected with three phase rectifier module 21 cathode output ends, and the second sub-current transformer 23 that is connected with three phase rectifier module 21 cathode output ends, the described first sub-current transformer 22 outputs be connected sub-current transformer 23 outputs and be connected with net side transformer 3 inputs respectively, the described first sub-current transformer 22 is comprised of N the inversion module 200 that boosts, N 〉=1 wherein, and when N 〉=2, boost and be parallel connection structure between inversion module 200, the circuit structure of the described second sub-current transformer 23 is identical with the circuit structure of the first sub-current transformer 22, inversion module 200 high potential input termination three phase rectifier module 21 cathode output ends boost in the described first sub-current transformer 22, inversion module 200 electronegative potential input termination three phase rectifier module 21 cathode output ends that boost in the second sub-current transformer 23, boost in the first sub-current transformer 22 and boost inversion module 200 high potential inputs by be connected to form the tandem cascade commonly in inversion module 200 electronegative potential inputs and the second sub-current transformer 23, inversion module 200 outputs boost in the described first sub-current transformer 22, inversion module 200 outputs that boost in the second sub-current transformer 23 are connected with net side transformer 3 inputs respectively.
Described three phase rectifier module 21 includes the diode three-phase and does not control rectifier bridge 211 dc capacitor group C211_1, the C211_2 identical with parameter, described diode three-phase is not controlled rectifier bridge 211 input sending and receiving motor 1 outputs, be connected in parallel on the diode three-phase after described dc capacitor group C211_1 and C211_2 are connected in series and do not control on rectifier bridge 211 both positive and negative polarity outputs, the tie point ground connection of dc capacitor group C211_1 and C211_2.
the described inversion module 200 that boosts includes the BOOST booster circuit 220 that connects in turn, braking circuit 230, three-phase inverter 240 and LC filter circuit 250, wherein, BOOST booster circuit 220 high potential input termination three phase rectifier module 21 cathode output ends in the first sub-current transformer 22, BOOST booster circuit 220 electronegative potential input termination three phase rectifier module 21 cathode output ends in the second sub-current transformer 23, BOOST booster circuit 220 electronegative potential inputs in the first sub-current transformer 22 and the BOOST booster circuit 220 high potential inputs in the second sub-current transformer 23 are by be connected to form the tandem cascade commonly, in the described first sub-current transformer 22, LC filter circuit 250 three-phase output ends are connected with net side transformer 300 1 secondary three phase winding inputs, LC filter circuit 250 three-phase output ends in the second sub-current transformer 23 are connected with net side transformer 3 another secondary three phase winding inputs, the former limit of net side transformer 3 three phase winding outputs are connected with electrical network.
Described net side transformer 300 adopts a Dyn type dual low voltage transformer or two the Dyn type transformers that comprised two independent neutral point n1, n2.
in the described first sub-current transformer 22, BOOST booster circuit 220 is by reactor R221_1, full control device Q222_1, diode D223_1, dc capacitor group C224_1 and C225_1 form, described reactor R221_1 one end is as BOOST booster circuit 220 high potential input termination three phase rectifier module 21 cathode output ends, the reactor R221_1 other end and full control device Q222_1 collector electrode, diode D223_1 positive pole is connected, full control device Q222_1 emitter is as BOOST booster circuit 220 electronegative potential input end groundings, diode D223_1 negative pole is connected with dc capacitor group C224_1 one end and is connected with braking circuit 230 1 inputs as BOOST booster circuit 220 high potential outputs afterwards, the dc capacitor group C224_1 other end is connected with dc capacitor group C225_1 one end, its tie point N1_0 meets the neutral point n1 of net side transformer 300 correspondences, the described dc capacitor group C225_1 other end rear ground connection that is connected with braking circuit 230 another inputs as BOOST booster circuit 220 electronegative potential outputs, in the described second sub-current transformer 23, BOOST booster circuit 220 is by reactor R221_2, full control device Q222_2, diode D223_2, dc capacitor group C224_2 and C225_2 form, described full control device Q222_2 collector electrode is as BOOST booster circuit 220 high potential inputs and dc capacitor group C224_2 one end, the braking circuit 230 1 inputs rear ground connection that is connected, described reactor R221_2 one end is connected with three phase rectifier module 21 cathode output ends as BOOST booster circuit 220 electronegative potential inputs, the reactor R221_2 other end and full control device Q222_2 emitter, diode D223_2 negative pole is connected, after being connected with dc capacitor group C225_2 one end, diode D223_2 positive pole is connected with braking circuit 230 another inputs as BOOST booster circuit 220 electronegative potential outputs, the described dc capacitor group C225_2 other end is connected mutually with the dc capacitor group C224_2 other end, its tie point N2_0 meets the neutral point n2 of net side transformer 300 correspondences.
In the described first sub-current transformer 22, braking circuit 230 is composed in series by full control device Q231_1 and brake resistance R232_1; In the second sub-current transformer 23, braking circuit 230 is composed in series by full control device Q231_2 and brake resistance R232_2.
In the described first sub-current transformer 22, LC filter circuit 250 includes Reactor banks R251_1 and capacitor group C252_1, described Reactor banks R251_1 one end connects with corresponding three-phase inverter 240 three-phase output ends, the Reactor banks R251_1 other end is connected with capacitor group C252_1 one end, net side transformer 300 1 secondary three phase winding inputs, and capacitor group C252_1 other end N1_1 meets the neutral point n1 of net side transformer 300 correspondences; In the described second sub-current transformer 23, LC filter circuit 250 includes Reactor banks R251_2 and capacitor group C252_2, described Reactor banks R251_2 one end connects with corresponding three-phase inverter 240 three-phase output ends, the Reactor banks R251_2 other end is connected with capacitor group C252_2 one end, net side transformer 300 another secondary three phase winding inputs, capacitor group C252_2 other end N2_1 meets the neutral point n2 of net side transformer 300 correspondences, and net side transformer 300 former limit three phase winding outputs get access to grid.
Compared with prior art, the beneficial effects of the utility model are:
1, expand with parallel way the high-power converter that rises appearance and compare with existing, between the sub-current transformer of this case first and the second sub-current transformer by be connected to form the tandem cascade commonly, the voltage that every individual sub-current transformer bears is reduced to half of original three phase rectifier module output voltage, thereby electric pressure is reduced, conveniently choose existing power electronics and entirely control device.
2, every sub-current transformer is by several inversion modules that boost composition that is connected in parallel, can play shunting action in parallel, reduced the current class of required electric power electronic power components, conveniently choose existing power electronics and entirely control device, capacity according to wind turbine generator, select suitable rectification module, the inversion module that boosts of quantity, to reach the Capacity design requirement, it is applicable to the jumbo wind turbine generator of unit.
3, in this case after the dilatation of the basic structure during N=1 and N 〉=2 o'clock structure have the architectural characteristic of equivalence, its structure is convenient to the modularized design of antithetical phrase current transformer, thereby realize the Redundancy Design of current transformer, availability, the ease for maintenance of the wind-powered electricity generation unit under the bonding module failure.
[description of drawings]
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is the inversion module structured flowchart that boosts of the present utility model.
The utility model circuit diagram when Fig. 3 is N=1.
The utility model circuit diagram when Fig. 4 is N=2.
Fig. 5 (a) is Dyn type dual low voltage transformer structural representation.
Fig. 5 (b) is two Dyn type transformer device structure schematic diagrames.
Fig. 6 is equivalent control model of the present utility model.
[embodiment]
The utility model feature and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technical staff's of the same trade understanding:
The Dyn transformer, its high-pressure side winding is delta connection, the low-pressure side winding is star-connection, the neutral point of N sign star winding.
as shown in Fig. 1-2, a kind of wind turbine generator energy transform device, include the generator 1 that connects in turn, current transformer 2, and net side transformer 3, described current transformer 2 includes three phase rectifier module 21, the the first sub-current transformer 22 that is connected with three phase rectifier module 21 cathode output ends, and the second sub-current transformer 23 that is connected with three phase rectifier module 21 cathode output ends, the described first sub-current transformer 22 outputs be connected sub-current transformer 23 outputs and be connected with net side transformer 3 inputs respectively, the described first sub-current transformer 22 is comprised of N the inversion module 200 that boosts, N 〉=1 wherein, and when N 〉=2, boost and be parallel connection structure between inversion module 200, the circuit structure of the described second sub-current transformer 23 is identical with the circuit structure of the first sub-current transformer 22, inversion module 200 high potential input termination three phase rectifier module 21 cathode output ends boost in the described first sub-current transformer 22, inversion module 200 electronegative potential input termination three phase rectifier module 21 cathode output ends that boost in the second sub-current transformer 23, boost in the first sub-current transformer 22 and boost inversion module 200 high potential inputs by be connected to form the tandem cascade commonly in inversion module 200 electronegative potential inputs and the second sub-current transformer 23, inversion module 200 outputs boost in the described first sub-current transformer 22, inversion module 200 outputs that boost in the second sub-current transformer 23 are connected with net side transformer 3 inputs respectively.
The inversion module 200 that boosts as above includes BOOST booster circuit 220, braking circuit 230, three-phase inverter 240 and the LC filter circuit 250 that connects in turn.
The utility model circuit diagram when being illustrated in figure 3 as N=1, wherein, described three phase rectifier module 21 is not controlled rectifier bridge 211 dc capacitor group C211_1, the C211_2 identical with parameter by a diode three-phase and is formed, described diode three-phase is not controlled rectifier bridge 211 input sending and receiving motor 1 outputs, be connected in parallel on the diode three-phase after described dc capacitor group C211_1 and C211_2 are connected in series and do not control on rectifier bridge 211 both positive and negative polarity outputs, the tie point ground connection of dc capacitor group C211_1 and C211_2.
in the described first sub-current transformer 22, BOOST booster circuit 220 is by reactor R221_1, full control device Q222_1, diode D223_1, dc capacitor group C224_1 and C225_1 form, described reactor R221_1 one end is as BOOST booster circuit 220 high potential input termination three phase rectifier module 21 cathode output ends, the reactor R221_1 other end and full control device Q222_1 collector electrode, diode D223_1 positive pole is connected, full control device Q222_1 emitter is as BOOST booster circuit 220 electronegative potential input end groundings, diode D223_1 negative pole is connected with dc capacitor group C224_1 one end and is connected with braking circuit 230 1 inputs as BOOST booster circuit 220 high potential outputs afterwards, the dc capacitor group C224_1 other end is connected with dc capacitor group C225_1 one end, the described dc capacitor group C225_1 other end rear ground connection that is connected with braking circuit 230 another inputs as BOOST booster circuit 220 electronegative potential outputs.
in the described second sub-current transformer 23, BOOST booster circuit 220 is by reactor R221_2, full control device Q222_2, diode D223_2, dc capacitor group C224_2 and C225_2 form, described full control device Q222_2 collector electrode is as BOOST booster circuit 220 high potential inputs and dc capacitor group C224_2 one end, the braking circuit 230 1 inputs rear ground connection that is connected, described reactor R221_2 one end is connected with three phase rectifier module 21 cathode output ends as BOOST booster circuit 220 electronegative potential inputs, the reactor R221_2 other end and full control device Q222_2 emitter, diode D223_2 negative pole is connected, after being connected with dc capacitor group C225_2 one end, diode D223_2 positive pole is connected with braking circuit 230 another inputs as BOOST booster circuit 220 electronegative potential outputs, the described dc capacitor group C225_2 other end is connected with the dc capacitor group C224_2 other end.
As mentioned above, in the first sub-current transformer 22 in BOOST booster circuit 220 electronegative potential inputs and the second sub-current transformer 23 BOOST booster circuit 220 high potential inputs by be connected to form the tandem cascade commonly, the voltage that each BOOST booster circuit 220 bears is reduced to half of original three phase rectifier module 21 output voltages, thereby electric pressure is reduced, conveniently choose existing power electronics and entirely control device.
In the described first sub-current transformer 22, braking circuit 230 is composed in series by full control device Q231_1 and brake resistance R232_1; In the second sub-current transformer 23, braking circuit 230 is composed in series by full control device Q231_2 and brake resistance R232_2.
In the described first sub-current transformer 22, LC filter circuit 250 is comprised of Reactor banks R251_1 and capacitor group C252_1; In the described second sub-current transformer 23, LC filter circuit 250 is comprised of Reactor banks R251_2 and capacitor group C252_2.
The utility model circuit diagram when being illustrated in figure 4 as N=2, it is on Fig. 3 basis, the first sub-current transformer 22 in current transformer 2 and the second sub-current transformer 23 to be carried out times lift-rising to hold, every sub-current transformer all is comprised of two inversion modules 200 that boost that are connected in parallel, between sub-current transformer by be connected to form the tandem cascade commonly, be applicable to the increasing wind turbine generator of single-machine capacity, wherein, described three phase rectifier module 21 has adopted two diode three-phases that are connected in parallel not control rectifier bridge 211, applicable to the three phase rectifier of large level generator 1 more.
As mentioned above, according to current transformer 2 circuit structure demands, when net side transformer 3 adopts a Dyn type dual low voltage transformer as shown in Fig. 5 (a), its former avris gets access to grid, and the three-phase input end of two secondary windings connects in succession with LC filter circuit 250 three-phase output ends of each self-corresponding sub-current transformer respectively; In the neutral point n1 of net side transformer 3 and corresponding the first sub-current transformer 22, BOOST booster circuit 220 neutral point N1_0, LC filter circuit 250 neutral point N1_1 connect; Net side transformer 3 another neutral point n2 connect with BOOST booster circuit 220 neutral point N2_0, LC filter circuit 250 neutral point N2_1 in corresponding the second sub-current transformer 23.
And when net side transformer 3 adopts two Dyn type transformers as shown in Fig. 5 (b), the former limit access in parallel electrical network of two transformers, the three-phase input end of secondary winding connects with corresponding filter circuit three-phase output end respectively, and neutral point n1 is connected neutral points corresponding and in the first sub-current transformer 22, the second sub-current transformer 23 circuit structures and is connected with n2.
As mentioned above, the operation principle of this case and process are as follows:
As shown in Figure 6, according to the structure of this case wind turbine generator energy transmission system, generator 1 and net side transformer 3 low-pressure side electrical networks can equivalence be voltage source, like this, the control of current transformer 2 are mainly concentrated on the control of generate electricity pusher side electric current and current on line side.Current transformer 2 controllable part comprise BOOST booster circuit 220, braking circuit 230 and three-phase inverter 240, as mentioned above, the first sub-current transformer 22 in current transformer 2 basic structures is adopted identical control mode with the second sub-current transformer 23, adopt respectively current loop control, voltage chopping to control and the current loop control mode to BOOST booster circuit 220, braking circuit 230 and three-phase inverter 240 in each inversion module 200 that boosts.
Wherein, BOOST booster circuit 220 adopts Current Control Strategy, is used for regulator generator 1 power output, according to the control principle of variable-speed operation wind-powered electricity generation unit: before reaching rated power, the control target of generator electromagnetic torque is at utmost to obtain wind energy; After reaching rated power, the control target of generator electromagnetic torque is firm power output, so, according to current wind-powered electricity generation unit power demand and current generator output voltage, regulate the switching time of full control device Q222_1 on BOOST booster circuit 220.
Braking circuit 230 adopts the voltage chopping control strategy, for the self-protection that realizes under the current transformer fault.To the dc voltage of BOOST booster circuit 220 output capping value all, when actual voltage value surpasses this higher limit, trigger error protection; The full control device of braking circuit 230 carries out conducting with the copped wave form, and the ON time in switch periods is directly proportional to the dc voltage size, is discharged the energy of accumulating by brake resistance.
Three-phase inverter 240 adopts the Hysteresis Current tracking control, and controlling target is in stable DC side voltage, with the past AC electrical network of the Energy transfer of DC side.The voltage setting value of three-phase inverter 240 DC side is determined according to three-phase inverter 240 output voltage grades, satisfies the demand of normal operation.
As mentioned above, the electric current of generator 1 output is by after the three phase rectifier of three phase rectifier module 21, boost and three-phase inversion by the inversion module 200 that boosts on the first sub-current transformer 22, the second sub-current transformer 23 respectively, flow in electrical network by net side transformer 3 at last.
As mentioned above; the wind turbine generator energy transmission system of this case protection; after the starting point of its dilatation is basic structure and dilatation, structure has the architectural characteristic of equivalence, and all technical schemes identical or close with this case structure all should be shown and fall in this case protection range.
Claims (7)
1. wind turbine generator energy transform device, it is characterized in that including the generator (1) that connects in turn, current transformer (2), and net side transformer (3), described current transformer (2) includes three phase rectifier module (21), the the first sub-current transformer (22) that is connected with three phase rectifier module (21) cathode output end, and the second sub-current transformer (23) that is connected with three phase rectifier module (21) cathode output end, the described first sub-current transformer (22) output be connected sub-current transformer (23) output and be connected with net side transformer (3) input respectively, the described first sub-current transformer (22) is comprised of N the inversion module (200) that boosts, N 〉=1 wherein, and when N 〉=2, boost and be parallel connection structure between inversion module (200), the circuit structure of the described second sub-current transformer (23) is identical with the circuit structure of the first sub-current transformer (22), inversion module (200) high potential that boosts in the described first sub-current transformer (22) input termination three phase rectifier module (21) cathode output end, the inversion module that boosts (200) electronegative potential input termination three phase rectifier module (21) cathode output end in the second sub-current transformer (23), boost in the first sub-current transformer (22) and boost inversion module (200) high potential input by be connected to form the tandem cascade commonly in inversion module (200) electronegative potential input and the second sub-current transformer (23), inversion module (200) output boosts in the described first sub-current transformer (22), inversion module (200) output that boosts in the second sub-current transformer (23) is connected with net side transformer (3) input respectively.
2. a kind of wind turbine generator energy transform device according to claim 1, it is characterized in that described three phase rectifier module (21) includes the diode three-phase and do not control rectifier bridge (211) dc capacitor group C211_1, the C211_2 identical with parameter, described diode three-phase is not controlled rectifier bridge (211) input sending and receiving motors (1) output, be connected in parallel on the diode three-phase after described dc capacitor group C211_1 and C211_2 are connected in series and do not control on rectifier bridge (211) both positive and negative polarity output, the tie point ground connection of dc capacitor group C211_1 and C211_2.
3. a kind of wind turbine generator energy transform device according to claim 1 and 2, it is characterized in that the described inversion module that boosts (200) includes the BOOST booster circuit (220) that connects in turn, braking circuit (230), three-phase inverter (240) and LC filter circuit (250), wherein, BOOST booster circuit (220) high potential input termination three phase rectifier module (21) cathode output end in the first sub-current transformer (22), BOOST booster circuit (220) electronegative potential input termination three phase rectifier module (21) cathode output end in the second sub-current transformer (23), BOOST booster circuit (220) high potential input in BOOST booster circuit (220) electronegative potential input in the first sub-current transformer (22) and the second sub-current transformer (23) is by be connected to form the tandem cascade commonly, in the described first sub-current transformer (22), LC filter circuit (250) three-phase output end is connected with net side transformer (300) one secondary three phase winding inputs, another secondary three phase winding inputs of LC filter circuit (250) three-phase output end and net side transformer (3) in the second sub-current transformer (23) are connected, the former limit of net side transformer (3) three phase winding outputs are connected with electrical network.
4. a kind of wind turbine generator energy transform device according to claim 3, is characterized in that described net side transformer (300) adopts a Dyn type dual low voltage transformer or two the Dyn type transformers that comprised two independent neutral point n1, n2.
5. a kind of wind turbine generator energy transform device according to claim 4, it is characterized in that in the described first sub-current transformer (22), BOOST booster circuit (220) is by reactor R221_1, full control device Q222_1, diode D223_1, dc capacitor group C224_1 and C225_1 form, described reactor R221_1 one end is as BOOST booster circuit (220) high potential input termination three phase rectifier module (21) cathode output end, the reactor R221_1 other end and full control device Q222_1 collector electrode, diode D223_1 positive pole is connected, full control device Q222_1 emitter is as BOOST booster circuit (220) electronegative potential input end grounding, diode D223_1 negative pole is connected with dc capacitor group C224_1 one end and is connected with braking circuit (230) one inputs as BOOST booster circuit (220) high potential output afterwards, the dc capacitor group C224_1 other end is connected with dc capacitor group C225_1 one end, its tie point N1_0 meets neutral point n1 corresponding to net side transformer (300), the described dc capacitor group C225_1 other end rear ground connection that is connected with another input of braking circuit (230) as BOOST booster circuit (220) electronegative potential output, in the described second sub-current transformer (23), BOOST booster circuit (220) is by reactor R221_2, full control device Q222_2, diode D223_2, dc capacitor group C224_2 and C225_2 form, described full control device Q222_2 collector electrode is as BOOST booster circuit (220) high potential input and dc capacitor group C224_2 one end, braking circuit (230) the one inputs rear ground connection that is connected, described reactor R221_2 one end is connected with three phase rectifier module (21) cathode output end as BOOST booster circuit (220) electronegative potential input, the reactor R221_2 other end and full control device Q222_2 emitter, diode D223_2 negative pole is connected, after being connected with dc capacitor group C225_2 one end, diode D223_2 positive pole is connected with another input of braking circuit (230) as BOOST booster circuit (220) electronegative potential output, the described dc capacitor group C225_2 other end is connected mutually with the dc capacitor group C224_2 other end, its tie point N2_0 meets neutral point n2 corresponding to net side transformer (300).
6. a kind of wind turbine generator energy transform device according to claim 5, is characterized in that in the described first sub-current transformer (22), braking circuit (230) is composed in series by full control device Q231_1 and brake resistance R232_1; In the second sub-current transformer (23), braking circuit (230) is composed in series by full control device Q231_2 and brake resistance R232_2.
7. a kind of wind turbine generator energy transform device according to claim 6, it is characterized in that in the described first sub-current transformer (22), LC filter circuit (250) includes Reactor banks R251_1 and capacitor group C252_1, described Reactor banks R251_1 one end connects with corresponding three-phase inverter (240) three-phase output end, the Reactor banks R251_1 other end is connected with capacitor group C252_1 one end, net side transformer (300) one secondary three phase winding inputs, and capacitor group C252_1 other end N1_1 meets neutral point n1 corresponding to net side transformer (300); In the described second sub-current transformer (23), LC filter circuit (250) includes Reactor banks R251_2 and capacitor group C252_2, described Reactor banks R251_2 one end connects with corresponding three-phase inverter (240) three-phase output end, the Reactor banks R251_2 other end is connected with capacitor group C252_2 one end, another secondary three phase winding inputs of net side transformer (300), capacitor group C252_2 other end N2_1 meets neutral point n2 corresponding to net side transformer (300), and net side transformer (300) former limit three phase winding outputs get access to grid.
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| CN2013202543520U CN203278264U (en) | 2013-05-10 | 2013-05-10 | Wind power generator group energy transmission device |
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| CN2013202543520U CN203278264U (en) | 2013-05-10 | 2013-05-10 | Wind power generator group energy transmission device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103248070A (en) * | 2013-05-10 | 2013-08-14 | 广东明阳风电产业集团有限公司 | Energy transmission system of wind turbine generator system |
| CN105790598A (en) * | 2016-04-20 | 2016-07-20 | 中国船舶重工集团公司第七〇二研究所 | Highly-reliable main circuit topological structure of railway ground deflector |
| CN106499586A (en) * | 2015-09-08 | 2017-03-15 | 通用电气公司 | The method of wind turbine, the brakes of wind turbine and operation wind turbine |
| CN107104597A (en) * | 2017-05-27 | 2017-08-29 | 燕山大学 | High step-up ratio suspend interlock three level DC/DC converters and its control method |
-
2013
- 2013-05-10 CN CN2013202543520U patent/CN203278264U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248070A (en) * | 2013-05-10 | 2013-08-14 | 广东明阳风电产业集团有限公司 | Energy transmission system of wind turbine generator system |
| CN103248070B (en) * | 2013-05-10 | 2015-11-04 | 广东明阳风电产业集团有限公司 | A kind of energy transmission system of wind turbine generator system |
| CN106499586A (en) * | 2015-09-08 | 2017-03-15 | 通用电气公司 | The method of wind turbine, the brakes of wind turbine and operation wind turbine |
| CN106499586B (en) * | 2015-09-08 | 2020-02-14 | 通用电气公司 | Wind turbine, brake system for a wind turbine and method of operating a wind turbine |
| CN105790598A (en) * | 2016-04-20 | 2016-07-20 | 中国船舶重工集团公司第七〇二研究所 | Highly-reliable main circuit topological structure of railway ground deflector |
| CN107104597A (en) * | 2017-05-27 | 2017-08-29 | 燕山大学 | High step-up ratio suspend interlock three level DC/DC converters and its control method |
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