CN105990846B - Wind electric converter device and converter device - Google Patents

Wind electric converter device and converter device Download PDF

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Publication number
CN105990846B
CN105990846B CN201510094313.2A CN201510094313A CN105990846B CN 105990846 B CN105990846 B CN 105990846B CN 201510094313 A CN201510094313 A CN 201510094313A CN 105990846 B CN105990846 B CN 105990846B
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China
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current
generator
subordinate
direct
axial
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CN201510094313.2A
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CN105990846A (en
Inventor
王长永
蔡骊
陆岩松
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Delta Optoelectronics Inc
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Delta Optoelectronics Inc
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Priority to CN201810895088.6A priority Critical patent/CN109038639B/en
Priority to US14/794,844 priority patent/US9768706B2/en
Publication of CN105990846A publication Critical patent/CN105990846A/en
Priority to US15/674,512 priority patent/US10027239B2/en
Application granted granted Critical
Publication of CN105990846B publication Critical patent/CN105990846B/en
Priority to US16/902,934 priority patent/USRE49768E1/en
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/443—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/45—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M5/4505—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only having a rectifier with controlled elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H02M7/487—Neutral point clamped inverters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • F03D9/255—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/0074—Plural converter units whose inputs are connected in series
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H02M1/322—Means for rapidly discharging a capacitor of the converter for protecting electrical components or for preventing electrical shock
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/443—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/45—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/443—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/45—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M5/452—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output waveform
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/539—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
    • H02M7/5395—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/0077—Plural converter units whose outputs are connected in series
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
    • H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
    • H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/75—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/757—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/7575—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only for high voltage direct transmission link
    • 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
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • 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
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]

Abstract

A kind of wind electric converter device, including：Multiple net side current transformers, multiple generator-side converter wears and DC bus module.Net side current transformer includes respectively to be electrically coupled to the net side output port and first and one second direct-flow input end mouth of power grid, and second being in series with the first direct-flow input end mouth of separately including of any two adjacent net side current transformers.Generator-side converter wear includes respectively to be electrically coupled to pusher side input port and first and second direct current output port of rotor machine, and the second and first direct current output port that any two adjacent generator-side converter wears separately include is in series.DC bus module is electrically coupled between net side current transformer and generator-side converter wear.

Description

Wind electric converter device and converter device
Technical field
The invention relates to a kind of power technologies, and in particular to a kind of converter device.
Background technology
With the continuous development of regenerative resource, core of the wind electric converter as wind-power electricity generation, also continuous conduct The improved emphasis of technical staff.It, may be according to the increasing of power system capacity in the field of electric drive frequency converter and power generating current transformer Add and uses multiple current transformers.However, the transmission of the DC bus progress voltage of multiple long ranges is often needed using multiple current transformers, Cost such as in direct current transmission energy part can not decline, and will be unable to the efficiency for promoting whole current transformer.In addition, working as motor and hair Motor distance farther out, also that is, the current transformer of the current transformer of generator side and motor side farther out in the case of, can also use multiple changes Stream device often need multiple long ranges DC bus carry out voltage transmission, such as the cost of direct current transmission energy part can not under Drop, will be unable to the efficiency for promoting whole current transformer.
Therefore, a new converter device how is designed, is that an industry is urgently to be resolved hurrily thus to solve the above problem The problem of.
Invention content
Therefore, an aspect of of the present present invention be to provide a kind of wind electric converter device, including：Multiple net side current transformers, Multiple generator-side converter wears and DC bus module.Net side current transformer includes respectively the multiple net side output ends for being electrically coupled to power grid Mouthful, the first direct-flow input end mouth and the second direct-flow input end mouth, and the of one of any two adjacent net side current transformers Two direct-flow input end mouths and the first direct-flow input end mouth of another net side current transformer are in series.Generator-side converter wear includes respectively electrical coupling It is connected to multiple pusher side input ports, the first direct current output port and the second direct current output port of rotor machine, and wantonly two First DC output end of the second direct current output port and another generator-side converter wear of one of a adjacent generator-side converter wear Mouth is in series.DC bus module is electrically coupled between net side current transformer and generator-side converter wear.
Another aspect of the present invention be to provide a kind of wind electric converter device, including：N net side current transformer, 2n Generator-side converter wear and DC bus module.Net side current transformer respectively include be electrically coupled to power grid multiple net side output ports, First direct-flow input end mouth, neutral point input port and the second direct-flow input end mouth.Generator-side converter wear includes respectively electric property coupling In multiple pusher side input ports of rotor machine, the first direct current output port and the second direct current output port, and 2n-1 The the second direct current output port and the first direct current output port of 2n generator-side converter wears of generator-side converter wear are in series.DC bus Module is electrically coupled between net side current transformer and generator-side converter wear.Wherein n>=1.
Another aspect of the present invention be to provide a kind of wind electric converter device, including：2n net side current transformer, n Generator-side converter wear and DC bus module.Net side current transformer respectively include be electrically coupled to power grid multiple net side output ports, First direct-flow input end mouth and the second direct-flow input end mouth, and the second direct-flow input end mouth of 2n-1 net side current transformers and First direct-flow input end mouth of 2n net side current transformers is in series.Generator-side converter wear includes respectively to be electrically coupled to the more of rotor machine A pusher side input port, the first direct current output port, neutral point output port and the second direct current output port.DC bus mould Block is electrically coupled between net side current transformer and generator-side converter wear.Wherein n>=1.
Another aspect of the present invention be to provide a kind of converter device, including：It is multiple first generator-side converter wears, multiple Second generator-side converter wear and DC bus module.First generator-side converter wear includes respectively the multiple electricity for being electrically coupled to electric machine Pusher side output port, the first direct-flow input end mouth and the second direct-flow input end mouth, and any two first adjacent current transformers its One of the first direct-flow input end mouth of the second direct-flow input end mouth and another first current transformer be in series.Second pusher side unsteady flow Device includes respectively that the multiple generator side input ports for being electrically coupled to rotor machine, the first direct current output port and second are straight Flow output port, and the second direct current output port of one of any two second adjacent current transformers and another second current transformer The first direct current output port be in series.DC bus module is electrically coupled to the first generator-side converter wear and the second generator-side converter wear Between.
Using the advantage of the invention is that wind electric converter device can by electric property coupling any two adjacent net side unsteady flows The first direct-flow input end mouth and the second direct-flow input end mouth between device connect net side current transformer and electric property coupling any two phases Generator-side converter wear is connected in the first direct current output port and the second direct current output port between adjacent generator-side converter wear, and easily Reach above-mentioned purpose.Can be by electric property coupling between any two first adjacent current transformers in other converter devices it is first straight Stream input port and the second direct-flow input end mouth connect the first current transformer and electric property coupling any two second adjacent unsteady flows The second current transformer is connected in the first direct current output port and the second direct current output port between device, and is readily achieved above-mentioned mesh 's.
Description of the drawings
Fig. 1 is a kind of circuit diagram of wind electric converter device in one embodiment of the invention；
Fig. 2 is the block diagram of subordinate pusher side control module in one embodiment of the invention；
Fig. 3 is the block diagram of main pusher side control module in one embodiment of the invention；
Fig. 4 is a kind of circuit diagram of wind electric converter device in one embodiment of the invention；
Fig. 5 is the block diagram of pusher side control module in one embodiment of the invention；
Fig. 6 is a kind of circuit diagram of wind electric converter device in one embodiment of the invention：
Fig. 7 is a kind of circuit diagram of wind electric converter device in one embodiment of the invention：
Fig. 8 is a kind of circuit diagram of wind electric converter device in one embodiment of the invention；
Fig. 9 is a kind of circuit diagram of wind electric converter device in one embodiment of the invention；
Figure 10 is a kind of circuit diagram of wind electric converter device in one embodiment of the invention；
Figure 11 is a kind of circuit diagram of wind electric converter device in one embodiment of the invention；
Figure 12 is a kind of circuit diagram of converter device in one embodiment of the invention.
Wherein, the reference numerals are as follows：
1：Wind electric converter device
10A-10C：Net side current transformer
11A、11B：Subordinate pusher side control module
11C：Main pusher side control module
12A-12C：Generator-side converter wear
13A-13C：Chopper circuit
140、142：DC bus
16：Power grid
160：Transformer
18：Rotor machine
200：Current draw unit
202：First converting unit
204：First computing unit
206：Voltage subtraction unit
208：Pressure difference computing unit
210：Voltage control unit
212：Second computing unit
214：First current control unit
216：Second current control unit
218：Second converting unit
300：Current draw unit
302：First converting unit
304：First computing unit
306：Second computing unit
308：First current control unit
310：Second current control unit
312：Second converting unit
41A-41C：Pusher side control module
400、402、404、406：DC bus
500：Current draw unit
502：First converting unit
504：First computing unit
506：Second computing unit
508：First current control unit
510：Second current control unit
512：Second converting unit
6：Wind electric converter device
7：Wind electric converter device
70A-70B：Net side current transformer
71A-71B：Pusher side control module
72A-72B：Generator-side converter wear
8：Wind electric converter device
80A：Net side current transformer
81A-81B：Pusher side control module
82A-82B：Generator-side converter wear
83A-83B：Chopper circuit
9：Wind electric converter device
90A-90B：Net side current transformer
92A：Generator-side converter wear
93A-93B：Chopper circuit
10：Wind electric converter device
100A-100B：Net side current transformer
101A-101D：Pusher side control module
102A-102D：Generator-side converter wear
103A-103D：Chopper circuit
1000-1004：DC bus
110A-110D：Net side current transformer
1100-1104：DC bus
11：Wind electric converter device
111A-111B：Pusher side control module
112A-112B：Generator-side converter wear
113A-113C：Chopper circuit
12：Converter device
120A-120B：First generator-side converter wear
121A-121B：Control module
122A-122B：Second generator-side converter wear
124：Electric machine
126：Rotor machine
Specific implementation mode
Please refer to Fig. 1.Fig. 1 is the circuit diagram of a kind of wind electric converter device 1 in one embodiment of the invention.Wind-powered electricity generation unsteady flow Device device 1 includes：Net side current transformer 10A-10C, generator-side converter wear 12A-12C and DC bus module, net side current transformer with Generator-side converter wear is respectively arranged on the tower of wind power system is set to wind-powered electricity generation with tower lower part, wherein generator-side converter wear 12A-12C In the cabin of the tower top of system, net side current transformer 10A-10C is set to the bottom of pylon or the outside of pylon, can reduce Transmit the cable cost needed for signal under tower upper part and tower between part, but also can be on balanced tower weight-bearing load.
In an embodiment, net side current transformer 10A-10C may include identical element.By taking net side current transformer 10A as an example, in Net side current transformer is two level current transformers in the present embodiment, and with the multiple net side output ports for being electrically coupled to power grid 16 (such as 3 net side output ports) N1-N3, the first direct-flow input end mouth IN1 and the second direct-flow input end mouth IN2.Yu Yishi It applies in example, net side output port N1-N3 is electrically coupled to power grid 16 by transformer 160.
The adjacent net side current transformer of any two in net side current transformer 10A-10C passes through the first direct-flow input end mouth IN1 and Two direct-flow input end mouth IN2 are in series.By taking net side current transformer 10A and 10B as an example, the second direct current of net side current transformer 10A inputs The first direct-flow input end mouth IN1 of port IN2 and net side current transformer 10B is in series.Similarly, the second of net side current transformer 10B The first direct-flow input end mouth IN1 of direct-flow input end mouth IN2 and net side current transformer 10C is in series.
In an embodiment, the number of generator-side converter wear 12A-12C is equal with the number of net side current transformer 10A-10C.And And generator-side converter wear 12A-12C may include identical element.By taking generator-side converter wear 12A as an example, pusher side unsteady flow in this present embodiment Device is two level current transformers, and (such as 3 pusher sides are defeated with the multiple pusher side input ports for being electrically coupled to rotor machine 18 Inbound port) O1-O3, the first direct current output port OUT1 and the second direct current output port OUT2.In an embodiment, generator Device 18 is magneto alternator device, electrical excitation synchronous power generator or the influence generator device of multigroup winding, In every group of winding include 3 winding (not shown)s.By taking generator-side converter wear 12A as an example, in this present embodiment, rotor machine Correspondence is electrically coupled to pusher side input port O1-O3 to 3 windings of one group of winding in 18 respectively.In an embodiment, pusher side Current transformer can be coupled to rotor machine by the filter circuits (not shown) such as inductance or capacitance.
The adjacent generator-side converter wear of any two in generator-side converter wear 12A-12C by the first direct current output port OUT1 and Second direct current output port OUT2 is in series.By taking generator-side converter wear 12A and 12B as an example, the second direct current of generator-side converter wear 12A is defeated The first direct current output port OUT1 of exit port OUT2 and generator-side converter wear 12B is in series.Similarly, generator-side converter wear 12B The first direct current output port OUT1 of second direct current output port OUT2 and generator-side converter wear 12C is in series.
DC bus module only includes two DC bus 140 and 142 in this present embodiment, and is located at side corresponding to two The net side current transformer 10A of edge and 10C and two the generator-side converter wear 12A and 12C for being located at edge.Wherein, 140 electricity of DC bus Property coupling net side current transformer 10A the first direct-flow input end mouth IN1 and generator-side converter wear 12A the first direct current output port OUT1.The the second direct-flow input end mouth IN2's and generator-side converter wear 12C of 142 electric property coupling net side current transformer 10C of DC bus Second direct current output port OUT2.And it is intermediate each to the first direct-flow input end mouth IN1, the first direct current output port OUT1 and the Between two direct-flow input end mouth IN2, the second direct current output port OUT2, then and DC bus is not provided with.
In an embodiment, DC bus module includes also bus capacitor C1-C6, is electrically coupled to each net side unsteady flow respectively Between the first direct-flow input end mouth IN1 of device 10A-10C and the second direct-flow input end mouth IN2 and each generator-side converter wear 12A-12C The first direct current output port OUT1 and OUT2 mouthfuls of second DC output end between, with provide these ports voltage support make With.
In an embodiment, wind electric converter device 1 also includes chopper circuit 13A, 13B and 13C, chopper circuit 13A- 13C is respectively arranged at the both ends bus capacitor C4, the both ends bus capacitor C5 and the both ends bus capacitor C6, to generator-side converter wear 12A-12C carries out voltage equalizing protection.By taking chopper circuit 13A as an example, chopper circuit 13A includes controllable type power semiconductor switch, electricity Resistance and two diodes；The collector of controllable type power semiconductor switch is connected to the cathode and bus capacitor of a diode The emitter of one end of C4, controllable type power semiconductor switch is electrically connected at the anode of the diode；One end of resistance connects In the emitter of controllable type power semiconductor switch, the other end of resistance is connected to the other end of bus capacitor C4, another two pole Pipe is connected in parallel in the both ends of resistance.In other embodiment, wind electric converter device 1 is also respectively arranged at comprising chopper circuit The bus capacitor both ends between the first direct-flow input end mouth and the second direct-flow input end mouth of each net side current transformer are electrically coupled to, with And it is electrically coupled to the bus capacitor two between the first direct current output port and the second direct current output port of each generator-side converter wear End, to carry out voltage equalizing protection to generator-side converter wear and net side current transformer.
Therefore, wind electric converter device 1 of the invention can by electric property coupling any two adjacent net side current transformer 10A- The first direct-flow input end mouth IN1 and the second direct-flow input end mouth IN2 between 10C connect net side current transformer 10A-10C, Yi Ji electricity Property couples the first direct current output port OUT1 and the second direct current output port between any two adjacent generator-side converter wear 12A-12C OUT2 connects generator-side converter wear 12A-12C.
Further, due to only in the first direct-flow input end mouth IN1 and generator-side converter wear 12A of net side current transformer 10A The first direct current output port OUT1 between and net side current transformer 10C the second direct-flow input end mouth IN2 and generator-side converter wear DC bus 140 and 142 is set between the second direct current output port OUT2 of 12C.Using generator-side converter wear coupled in series and net side The structure of current transformer coupled in series so that be in the DC voltage between the net side current transformer or generator-side converter wear at two edges Size can be adjusted by the number of concatenated net side current transformer and generator-side converter wear so that the design of wind electric converter device is more Flexibly, so that DC bus number and cost between net side current transformer 10A-10C and generator-side converter wear 12A-12C can be substantially Decline.
In an embodiment, generator-side converter wear 12A-12C shown in FIG. 1 includes a main generator-side converter wear, Yi Jiduo A subordinate generator-side converter wear.It in an embodiment, can set such as, but not limited to, generator-side converter wear 12C becomes as main pusher side Device is flowed, and generator-side converter wear 12A, 12B is then as subordinate generator-side converter wear.
The control mode for putting up with main generator-side converter wear and subordinate generator-side converter wear below is described in detail.
Wind electric converter device 1 also includes subordinate pusher side control module 11A and 11B, main pusher side control module 11C, Middle subordinate pusher side control module 11A and 11B respectively correspond to above-mentioned one of subordinate generator-side converter wear 12A and 12B, main machine Side control module 11C corresponds to above-mentioned main generator-side converter wear 12C.
Machines of the subordinate pusher side control module 11A and 11B to receive and according to subordinate generator-side converter wear 12A and 12B is corresponded to The first direct current output port of three-phase subordinate the input current amount I1-I2, generator-side converter wear 12A and 12B of side input port O1-O3 Subordinate DC voltage amount (also that is, DC bus-bar voltage) V between OUT1 and the second direct current output port OUT2dc_i, and it is main The second axial general given current component i that pusher side control module is sentq_norm*, it generates three-phase dependent voltage and controls signal V1-V2 is to control corresponding subordinate generator-side converter wear 12A and 12B.Wherein subordinate pusher side control module 11A and 11B are according to subordinate DC voltage amount Vdc_iIt generates the second axial subordinate and independently gives current component iq_i*。
In an embodiment, subordinate pusher side control module 11A and 11B can framework having the same, below will be with appurtenant machine Side control module 11A illustrates for example.
Please refer to Fig. 2.Fig. 2 is the block diagram of subordinate pusher side control module 11A in one embodiment of the invention.Subordinate pusher side Control module 11A includes：Current draw unit 200, the first converting unit 202, the first computing unit 204, voltage subtraction unit 206, pressure difference computing unit 208, voltage control unit 210, the second computing unit 212, the first current control unit 214, second Current control unit 216 and the second converting unit 218.
Current draw unit 200 is electrically coupled to the pusher side input port O1-O3 of subordinate generator-side converter wear 12A, with extraction Three-phase subordinate input current amount I1.In an embodiment, three-phase subordinate input current amount I1 includes three component ia_i、ib_iAnd ic_i。
First converting unit 202 is by three component i of three-phase subordinate input current amount I1a_i、ib_iAnd ic_iBe converted to first Axial subordinate current component id_iWith the second axial subordinate current component iq_i.In an embodiment, the first converting unit 202 includes The dq rotational coordinates units of d axis and q axis, first axis subordinate current component id_iWith the second axial subordinate current component iq_iRespectively On dq rotating seat target d axis and on q axis.In an embodiment, first axis subordinate current component id_iFor reactive current Component, the second axial subordinate current component iq_iFor active current.
First computing unit 204 is according to first axis subordinate current component id_iConstant current is independently given with first axis subordinate Component id_i* it calculates and generates first axis difference id_id, wherein first axis subordinate independently gives current component id_i* can be from Belong to the setting value inside pusher side control module 11A.
Voltage subtraction unit 206 extract from subordinate generator-side converter wear 12A first and second direct current output port OUT1 and Subordinate DC voltage amount V between OUT2dc_i.Pressure difference computing unit 208 is according to subordinate DC voltage amount Vdc_iWith reference voltage amount Vdc_refIt calculates and generates voltage difference Vdc_d, wherein reference voltage amount Vdc_refCan be inside subordinate pusher side control module 11A Setting value.Further, voltage control unit 210 is according to voltage difference Vdc_dIt is independent to constant current point to generate the second axial subordinate Measure iq_i*。
Second computing unit 212 independently gives current component i according to the second axial subordinateq_i*, the second axial subordinate electric current Component iq_iWith the second axial general given current component iq_norm*, it calculates and generates the second axial difference iq_id。
First current control unit 214 is according to first axis difference id_idIt generates first axis dependent voltage and controls signal Vd_i.Second current control unit 216 is according to the second axial difference iq_idGenerate the second axial dependent voltage control signal Vq_i.The Two converting units 218 are then further by first axis dependent voltage control signal Vd_iAnd the second axial dependent voltage control letter Number Vq_iBe converted to three-phase dependent voltage control signal V1.In an embodiment, it includes three that three-phase dependent voltage, which controls signal V1, Component Va_i、Vb_iAnd Vc_i.In an embodiment, three component Va_i、Vb_iAnd Vc_iIt can be respectively pulse width modulation (Pulse Width Modulation；PWM) signal.
Therefore, signal V1 is controlled by three-phase dependent voltage and controls the semiconductor in corresponding subordinate generator-side converter wear 12A Switch element is opened or closed, so that subordinate generator-side converter wear 12A works in rectification state or inverter mode or shuts down shape State.
It is noted that subordinate pusher side control module 11B also can be according to above-mentioned mechanism according to its three-phase subordinate input current Measure I2, the second axial general given current component iq_norm*And subordinate DC voltage amount Vdc_iIt calculates and generates three-phase dependent voltage Control signal V2.However, the first axis subordinate between subordinate pusher side control module 11B and subordinate pusher side control module 11A is independent Given current component id_i* and the second axial subordinate independently gives current component iq_iIt * can be independent mutually.And second is axial general Given current component iq_norm* then it is suitable for all subordinate pusher side control module 11A and 11B.
Fig. 3 is the block diagram of main pusher side control module 11C in one embodiment of the invention.Main pusher side control module 11C Including：Current draw unit 300, the first converting unit 302, the first computing unit 304, the second computing unit 306, the first electric current Control unit 308, the second current control unit 310 and the second converting unit 312.
Current draw unit 300 is electrically coupled to the pusher side input port O1-O3 of main generator-side converter wear 12C, with extraction The main input current amount I3 of three-phase.In an embodiment, the main input current amount I3 of three-phase includes three component ia_N、ib_NAnd ic_N。
First converting unit 302 is by three component i of the main input current amount I3 of three-phasea_N、ib_NAnd ic_NBe converted to first Axial main electrical current component id_NWith the second axial main electrical current component iq_N.In an embodiment, the first converting unit 302 includes The dp of d axis and q axis rotates coordinate, first axis main electrical current component id_NWith the second axial main electrical current component iq_NIt is located at On dq rotating seat target d axis and on q axis.In an embodiment, first axis main electrical current component id_NFor reactive current point Amount, the second axial main electrical current component iq_NFor active current.
First computing unit 304 is according to first axis main electrical current component id_NConstant current is mainly independently given with first axis Component id_N* it calculates and generates first axis difference id_Nd。
Second computing unit 306 is according to the second axial main electrical current component iq_N, the second axial subordinate it is independently total to constant current Measure ∑ iq_i* with the second axial general given current component iq_norm* the second axial difference i is generatedq_Nd.In an embodiment, the Two axial subordinates independently give constant current total amount ∑ iq_i* it is the second axial subordinate of all subordinate pusher side control module 11A and 11B Independent given current component iq_i* summation.
First current control unit 308 is according to first axis difference id_NdIt generates first axis mains voltage and controls signal Vd_N.Second current control unit 310 is according to the second axial difference iq_NdGenerate the second axial mains voltage control signal Vq_N.The Two converting units 312 are then further by first axis mains voltage control signal Vd_NAnd the second axial mains voltage control letter Number Vq_NBe converted to three-phase mains voltage control signal V3.In an embodiment, it includes three that three-phase mains voltage, which controls signal V3, Component Va_N、Vb_NAnd Vc_N.In an embodiment, three component Va_N、Vb_NAnd Vc_NIt can be respectively pulse width modulation (Pulse Width Modulation, PWM) signal.
Therefore, signal V3 is controlled by three-phase mains voltage and controls the power in corresponding main generator-side converter wear 12C half Conductor switching device, so that main generator-side converter wear works in rectification state or inverter mode or shutdown status.
It is noted that main pusher side control module 11C each other can be by each with subordinate pusher side control module 11A and 11B The possible form of kind and signal transmission specification are communicated.Main pusher side control module 11C to subordinate pusher side control module 11A, 11B sends the second axial general given current component iq_norm*, subordinate pusher side control module 11A and 11B then gives main pusher side mould Block 11C sends the second axial subordinate and independently gives current component iq_i*.In an embodiment, main pusher side control module 11C will The second axial subordinate that subordinate pusher side control module 11A and 11B are sent independently gives current component iq_i* operation is summed up, The second axial subordinate is generated independently to constant current total amount ∑ iq_i*。
Therefore, wind electric converter device 1 of the invention can pass through main pusher side control module 11C by above-mentioned mode And subordinate pusher side control module 11A and 11B carries out main generator-side converter wear 12C and subordinate generator-side converter wear 12A and 12B Effective control.
Please refer to Fig. 4.Fig. 4 is the circuit diagram of a kind of wind electric converter device 4 in one embodiment of the invention.Wind-powered electricity generation unsteady flow Device device 4 includes：Net side current transformer 10A-10C, generator-side converter wear 12A-12C and DC bus module.Shown in Fig. 1 Wind electric converter device 1, be mutually in series between the net side current transformer 10A-10C of wind electric converter device 4, and generator-side converter wear It is also mutually in series between 12A-12C.The wind electric converter device 1 for the element major part and Fig. 1 that wind electric converter device 4 is included It is identical.Therefore, below by only just the element of tool otherness is described.
In this present embodiment, DC bus module includes DC bus 400,402,404 and 406.Wherein, DC bus 400 are electrically coupled to the first direct current output of the first direct-flow input end mouth IN1 and generator-side converter wear 12A of net side current transformer 10A Port OUT1.DC bus 402 is electrically coupled to the second direct-flow input end mouth IN2 and generator-side converter wear of net side current transformer 10A The second direct current output port OUT2 of 12A (is equivalent to the first direct-flow input end mouth IN1 and pusher side unsteady flow of net side current transformer 10B The first direct current output port OUT1 of device 12B).
DC bus 404 is electrically coupled to the second direct-flow input end mouth IN2 and generator-side converter wear of net side current transformer 10B The second direct current output port OUT2 of 12B (is equivalent to the first direct-flow input end mouth IN1 and pusher side unsteady flow of net side current transformer 10C The first direct current output port OUT1 of device 12C).DC bus 406 is electrically coupled to the second direct current input of net side current transformer 10C The second direct current output port OUT2 of port IN2 and generator-side converter wear 12C.
The control mode of generator-side converter wear 12A-12C will be described in detail below.
Wind electric converter device 4 also includes pusher side control module 41A-41C, respectively corresponds to above-mentioned generator-side converter wear 12A- One of 12C.Pusher side control module 41A-41C is to according to the pusher side input port O1- of corresponding generator-side converter wear 12A-12C The axial general given current component i of the three-phase input current amount I1-I3 of O3 and secondq_norm*, it generates three-phase voltage and controls signal V1-V3 controls corresponding generator-side converter wear 12A-12C.In an embodiment, pusher side control module 41A-41C can be having the same Framework will illustrate below using pusher side control module 41A as example.
Please refer to Fig. 5.Fig. 5 is the block diagram of pusher side control module 41A in one embodiment of the invention.Pusher side control module 41A includes：Current draw unit 500, the first converting unit 502, the first computing unit 504, the second computing unit 506, first Current control unit 508, the second current control unit 510 and the second converting unit 512.
Current draw unit 500 is electrically coupled to the pusher side input port O1-O3 of generator-side converter wear 12A, to extract three-phase Input current amount I1.In an embodiment, three-phase input current amount I1 includes three component ia_i、ib_iAnd ic_i。
First converting unit 502 is by three component i of three-phase input current amount I1a_i、ib_iAnd ic_iBe converted to first axis Current component id_iWith the second axial current component iq_i.In an embodiment, the first converting unit 502 includes the dq of d axis and q axis Rotate coordinate, first axis current component id_iWith the second axial current component iq_iBe located on dq rotating seat target d axis with And on q axis.In an embodiment, first axis current component id_iFor reactive current component, the second axial current component iq_iFor Active current.In other embodiment, first axis current component id_iCan be active current, the second axial electricity Flow component iq_iIt can be reactive current component.
First computing unit 504 is according to first axis current component id_iCurrent component i is independently given with first axisd_i* It calculates and generates first axis difference id_id。
Second computing unit 506 is according to the second axial current component iq_iWith the second axial general given current component iq_norm* the second axial difference i is calculatedq_id.In this present embodiment, the second axial general given current component iq_norm* by outside Main controller (not shown) provided, and can will be received from external piloting control machine by pusher side control module 41A second Axial general given current component iq_norm* pusher side control module 41B and 41C are sent to.In this present embodiment, pusher side controls mould It is mutually communicated between block 41A and pusher side control module 41B and 41C.It, can also be by pusher side control module 41B in other embodiment Or 41C receives the second axial general given current component i from external piloting control machineq_norm* and other pusher side controls are transferred to Module.
First current control unit 508 is according to first axis difference id_idGenerate first axis voltage control signal Vd_i.The Two current control units 510 are according to the second axial difference iq_idGenerate the second axial voltage control signal Vq_i.Second converting unit 512 further by first axis voltage control signal Vd_iAnd the second axial voltage control signal Vq_iBe converted to three-phase voltage Control signal V1.In an embodiment, it includes three component V that three-phase voltage, which controls signal V1,a_i、Vb_iAnd Vc_i。
Therefore, signal V1 is controlled by three-phase voltage and controls the power semiconductor switch in corresponding generator-side converter wear 12A Element makes generator-side converter wear work in rectification state or inverter mode or shutdown status.Therefore, wind-powered electricity generation unsteady flow of the invention Device device 1 can carry out generator-side converter wear 12A-12C by pusher side control module 41A-41C effective by above-mentioned mode Control.
Please refer to Fig. 6.Fig. 6 is the circuit diagram of a kind of wind electric converter device 6 in one embodiment of the invention.Wind-powered electricity generation unsteady flow Device device 6 includes：Net side current transformer 10A-10B, generator-side converter wear 12A-12B and DC bus module.Shown in Fig. 1 Wind electric converter device 1, be mutually in series between the net side current transformer 10A-10B of wind electric converter device 6, and generator-side converter wear It is also mutually in series between 12A-12B.The wind electric converter device 1 for the element major part and Fig. 1 that wind electric converter device 6 is included To be identical, only the number of net side current transformer 10A-10B and generator-side converter wear 12A-12B are two.
In an embodiment, wind electric converter device includes：Net side current transformer 10A-10B, generator-side converter wear 12A-12B with And DC bus module.Similar to wind electric converter device 6 shown in fig. 6, the net side current transformer 10A- of wind electric converter device 6 It is mutually in series between 10B, and is also mutually in series between generator-side converter wear 12A-12B.
The element major part that wind electric converter device 6 is included and the wind electric converter device 6 of Fig. 6 are identical, only direct current Busbar modules further include intermediate dc bus, are electrically coupled to the second direct-flow input end mouth IN2 and machine of net side current transformer 10A Between the second direct current output port OUT2 of side current transformer 12A.
It is noted that except net side current transformer 10A-10B and generator-side converter wear 12A-12B shown in Fig. 1 and Fig. 6 is respectively three Outside a and two examples, wind electric converter is installed on the net side current transformer and machine that also may include greater number in other embodiment Side current transformer, and efficient control can be reached by above-mentioned mechanism.
Please refer to Fig. 7.Fig. 7 is the circuit diagram of a kind of wind electric converter device 7 in one embodiment of the invention.
The structure of wind electric converter device 7 is similar to wind electric converter device 6 shown in fig. 6, and wherein wind electric converter fills Set between the generator-side converter wear 72A-72B for being mutually in series between the net side current transformer 70A-70B that 7 include, and including also string mutually Connection.However, wind electric converter device 7 and the difference of wind electric converter device 6 are, net side current transformer 70A-70B and pusher side Current transformer 72A-72B is three-level current transformer.And the pusher side control module 71A-71B that wind electric converter device 7 is included then may be used Generator-side converter wear 72A-72B is controlled with mechanism above-mentioned.
Similarly, the framework of this three level is also applicable in the wind electric converter device 1 of Fig. 1.
Please refer to Fig. 8.Fig. 8 is the circuit diagram of a kind of wind electric converter device 8 in one embodiment of the invention.
Wind electric converter device 8 includes net side current transformer 80A, generator-side converter wear 82A-82B and DC bus module, wherein It is mutually in series between the generator-side converter wear 82A-82B that wind electric converter device 8 is included.However, the net of wind electric converter device 8 Side current transformer 80A is three-level current transformer, and generator-side converter wear is two level current transformers.The second direct current of generator-side converter wear 82A The first direct current output port OUT1 of output port OUT2 and generator-side converter wear 82B is in series.In the present embodiment, DC bus mould Block includes two DC bus 800 and 802, corresponds to generator-side converter wear 82A and 82B and net side current transformer 80A.Wherein direct current It is first straight to be electrically coupled to the first direct current output port OUT1 and net side current transformer 80A of generator-side converter wear 82A for busbar 800 Flow input port IN1.DC bus 802 is electrically coupled to the second direct current output port OUT2 and net of generator-side converter wear 82B The second direct-flow input end mouth IN2 of side current transformer 80A.And the second direct current output port OUT2 and pusher side of generator-side converter wear 82A Between the neutral point input port IN0 of the first direct current output port OUT1 and net side current transformer 80A of current transformer 82B, then do not set Set DC bus.In this present embodiment, the mechanism of earlier figures 2 and Fig. 3 then may be used to machine in pusher side control module 81A and 81B Current transformer 82A and 82B are controlled for side.
In an embodiment, DC bus module includes also bus capacitor C1-C4, is electrically coupled to net side current transformer respectively Between the first direct-flow input end mouth IN1 and neutral point input port IN0 of 80A and the neutral point input port of net side current transformer Between IN0 and the second direct-flow input end mouth IN2 and the first direct current output port OUT1 and second of generator-side converter wear 82A and 82B Between the OUT2 of direct current output port, to provide the supporting role of the voltage of such port.
In an embodiment, wind electric converter device 1 also includes chopper circuit 83A and 83B, 83A and 83B points of chopper circuit It is not set to the both ends bus capacitor C3 and the both ends bus capacitor C4, to carry out voltage equalizing protection to generator-side converter wear 81A and 81B.
In an embodiment, be similar to wind electric converter device 8 shown in Fig. 8, but its difference lies in direct currents with Fig. 8 Busbar modules include DC bus 800,801 and 802.Wherein DC bus 800 is electrically coupled to the first of net side current transformer 80A Between the first direct current output port OUT1 of direct-flow input end mouth IN1 and generator-side converter wear 82A.DC bus 801 is electrically coupled to The the second direct current output port OUT2 and pusher side of the neutral point input port IN0 and generator-side converter wear 82A of net side current transformer 80A become Between the first direct current output port OUT1 for flowing device 82B.DC bus 802 is electrically coupled to the second direct current of net side current transformer 80A Between the second direct current output port OUT2 of input port IN2 and generator-side converter wear 82B.In this present embodiment, pusher side control module The mechanism that earlier figures 5 then may be used in 81A and 81B controls generator-side converter wear 82A and 82B.
Similarly, this asymmetric framework is also applicable in the wind electric converter device 1 of Fig. 1.
Please refer to Fig. 9.Fig. 9 is the circuit diagram of a kind of wind electric converter device 9 in one embodiment of the invention.
Wind electric converter device 9 includes net side current transformer 90A-90B, generator-side converter wear 92A and DC bus module, wherein It is mutually in series between the net side current transformer 90A-90B that wind electric converter device 9 is included.However, the machine of wind electric converter device 9 Side current transformer 92A is three-level current transformer, and net side current transformer 90A-90B is two level current transformers.In this present embodiment, direct current is female Wire module includes that two DC bus 900 and 902 correspond to net side current transformer 90A and 90B and generator-side converter wear 92A.Wherein DC bus 900 is electrically coupled to the first of the first direct-flow input end mouth IN1 and generator-side converter wear 92A of net side current transformer 90A Between the OUT1 of direct current output port.DC bus 902 be electrically coupled to net side current transformer 90B the second direct-flow input end mouth IN2 and Between the second direct current output port OUT2 of generator-side converter wear 92A.And the second direct-flow input end mouth IN2 of net side current transformer 90A and Between the first direct-flow input end mouth IN1 of net side current transformer 90B and the neutral point output port OUT0 of generator-side converter wear, then it is not provided with DC bus.
In an embodiment, be similar to wind electric converter device 9 shown in Fig. 9, but its difference lies in direct currents with Fig. 9 Busbar modules include DC bus 900,901 and 902.Wherein DC bus 900 is electrically coupled to the first of net side current transformer 90A Between the first direct current output port OUT1 of direct-flow input end mouth IN1 and generator-side converter wear 92A.DC bus 901 is electrically coupled to The the first direct-flow input end mouth IN1 and pusher side of the second direct-flow input end mouth IN2 and net side current transformer 90B of net side current transformer 90A Between the neutral point output port OUT0 of current transformer 92A.DC bus 902 is electrically coupled to the second direct current of net side current transformer 90B Between the second direct current output port OUT2 of input port IN2 and generator-side converter wear 92A.
In an embodiment, DC bus module includes also capacitance C1-C4, is electrically coupled to net side current transformer 90A respectively The first direct-flow input end mouth IN1 and the second direct-flow input end mouth IN2 between and net side current transformer 90B the first direct current input Between port IN1 and the second direct-flow input end mouth IN2 and the first direct current output port OUT1, the neutral point of generator-side converter wear 92A Between output port OUT0 and the second direct current output port OUT2, to provide the supporting role of the voltage of such port.
In an embodiment, wind electric converter device 1 also includes chopper circuit 93A and 93B, 93A and 93B points of chopper circuit It is not set to the both ends bus capacitor C3 and the both ends bus capacitor C4, to carry out voltage equalizing protection to generator-side converter wear 92A.
Similarly, this asymmetric framework is also applicable in the wind electric converter device 1 of Fig. 1.
Figure 10 is the circuit diagram of a kind of wind electric converter device 10 in one embodiment of the invention.Wind electric converter device 10 Including：Net side current transformer 100A-100B, generator-side converter wear 102A-102D and DC bus module.In an embodiment, net Side current transformer 100A-100B can be three-level current transformer, and include identical element.Net side current transformer is electrically coupled to power grid 16, and net side current transformer 100A-100B is in series.The second direct-flow input end mouth IN2 of net side current transformer 100A and net side unsteady flow The first direct-flow input end mouth IN1 of device 100B is in series.
In an embodiment, generator-side converter wear 102A-102D may include identical element, can be two level converters. Generator-side converter wear is electrically coupled to rotor machine 18.The adjacent generator-side converter wear of any two in generator-side converter wear 102A-102D It is in series by the first direct current output port OUT1 and the second direct current output port OUT2.
By taking generator-side converter wear 102A and 102B as an example, the second direct current output port OUT2 and pusher side of generator-side converter wear 102A The first direct current output port OUT1 of current transformer 102B is in series.Similarly, the second DC output end of generator-side converter wear 102B The first direct current output port OUT1 of mouth OUT2 and generator-side converter wear 102C is in series.Similarly, the of generator-side converter wear 102C The first direct current output port OUT1 of two direct current output port OUT2 and generator-side converter wear 102D is in series.
DC bus module includes DC bus 1000-1004.Wherein, 1000 electric property coupling net side current transformer of DC bus The first direct current output port OUT1 of the first direct-flow input end mouth IN1 and generator-side converter wear 102A of 100A.DC bus The second direct current of the second direct-flow input end mouth IN2 and generator-side converter wear 102D of 1002 electric property coupling net side current transformer 100B are defeated Exit port OUT2.The central point input port IN0 and generator-side converter wear of 1001 electric property coupling net side current transformer 100A of DC bus Between the first direct current output port OUT1 of 102B, the second direct current that DC bus 1003 is electrically coupled to net side current transformer 100A is defeated Between the second direct current output port OUT2 of inbound port IN2 and generator-side converter wear 102B and DC bus 1004 is electrically coupled to Between the first direct current output port OUT1 of the central point input port IN0 and generator-side converter wear 102D of net side current transformer 100B.
Therefore, the mechanism pair of Fig. 5 may be used in the pusher side control module 101A-101D that wind electric converter device 10 is included Generator-side converter wear 102A-102D is controlled.
In another embodiment, DC bus module can only include two DC bus 1000 and 1002, and correspond to two A generator-side converter wear 102A and 102D for being located at edge positioned at the net side current transformer 100A at edge and 100B and two.And it is intermediate Net side current transformer 100A central point input port IN0 and generator-side converter wear 102B the first direct current output port OUT1 between, Between the second direct current output port OUT2 of the second direct-flow input end mouth IN2 and generator-side converter wear 102B of net side current transformer 100A, And the first direct current output port OUT1 of the central point input port IN0 and generator-side converter wear 102D of net side current transformer 100B Between, then and it is not provided with DC bus.
The pusher side control module 101A-101D that such wind electric converter device 10 is included, can be used Fig. 2 and Fig. 3 Mechanism generator-side converter wear 102A-102D is controlled.
In an embodiment, DC bus module includes also bus capacitor C1-C8, is electrically connected in net side current transformer The the first direct-flow input end mouth IN1 and neutral point input port IN0 and neutral point input port IN0 and second of 100A-100B is straight It flows between input port IN2 and the first direct current output port OUT1 and the second direct current output of each generator-side converter wear 102A-102D Between the OUT2 of port, the voltage support to provide these ports acts on.
In an embodiment, wind electric converter device 1 includes also chopper circuit 103A to 103D, and chopper circuit 103A is extremely 103D is respectively arranged at the both ends bus capacitor C3, C4, C7 and C8, to generator-side converter wear 102A, 102B, 102C and 102D into Row voltage equalizing protection.
Figure 11 is the circuit diagram of a kind of wind electric converter device 11 in one embodiment of the invention.
Wind electric converter device 11 includes：Net side current transformer 110A-110D, generator-side converter wear 112A-112B and direct current Busbar modules.In an embodiment, net side current transformer 110A-110D includes identical element, and net side current transformer can be two Level current transformer.Net side current transformer 110A-110D is electrically coupled to power grid 16, and any two adjacent net side current transformers pass through One direct current input port IN1 and the second direct-flow input end mouth IN2 are in series.By taking net side current transformer 110A and 110B as an example, net The first direct-flow input end mouth IN1 of the second direct-flow input end mouth IN2 and net side current transformer 110B of side current transformer 110A want to connect.
Similarly, the first direct current of the second direct-flow input end mouth IN2 and net side current transformer 110C of net side current transformer 110B Input port IN1 is in series.Similarly, the second direct-flow input end mouth IN2 and net side current transformer 110D of net side current transformer 110C The first direct-flow input end mouth IN1 be in series.
In an embodiment, generator-side converter wear 112A-112B may include identical element, and generator-side converter wear can be three Level converter.Generator-side converter wear is electrically coupled to rotor machine 18.The second direct current output port of generator-side converter wear 112A The first direct current output port OUT1 of OUT2 and generator-side converter wear 112B is in series.
DC bus module includes DC bus 1100,1101,1102,1103 and 1104.Wherein, 1100 electricity of DC bus Property is coupled to the first direct-flow input end mouth IN1 of net side current transformer 110A and the first DC output end of generator-side converter wear 112A Mouth OUT1.The the second direct-flow input end mouth IN2 and generator-side converter wear of 1102 electric property coupling net side current transformer 110D of DC bus The second direct current output port OUT2 of 112B.And DC bus 1101 is electrically coupled to the central point output of generator-side converter wear 112A Between the first direct-flow input end mouth IN1 of port OUT0 and net side current transformer 110B, DC bus 1103 is electrically coupled to pusher side change Between the second direct-flow input end mouth IN2 for flowing the second direct current output port OUT2 and net side current transformer 110B of device 112A, Yi Jizhi Stream busbar 1104 is electrically coupled to the first of the central point output port OUT0 and net side current transformer 110D of generator-side converter wear 112B Between direct-flow input end mouth IN1.
Therefore, the mechanism pair of Fig. 5 may be used in the pusher side control module 111A-111B that wind electric converter device 11 is included Generator-side converter wear 112A-112B is controlled.
In another embodiment, DC bus module can only include two DC bus 1100 and 1102, and correspond to two A generator-side converter wear 112A and 112B for being located at edge positioned at the net side current transformer 110A at edge and 110D and two.And it is intermediate Generator-side converter wear 112A central point output port OUT0 and net side current transformer 110B the first direct-flow input end mouth IN1 between, Between the second direct-flow input end mouth IN2 of the second direct current output port OUT2 and net side current transformer 110B of generator-side converter wear 112A, And the first direct-flow input end mouth IN1 of the central point output port OUT0 and net side current transformer 110D of generator-side converter wear 112B Between, then and it is not provided with DC bus.
In an embodiment, wind electric converter device 1 includes also chopper circuit 113A to 113D, and chopper circuit 113A is extremely 113D is respectively arranged at the both ends bus capacitor C3, C4, C7 and C8, is protected to carry out pressure to generator-side converter wear 112A and 112B Shield.
Fig. 2 and Fig. 3 can be used in the pusher side control module 111A-111B that such wind electric converter device 11 is included Mechanism controls generator-side converter wear 112A-112B.
Therefore, by the embodiment of Fig. 6 to Figure 11 it is found that wind electric converter device design can with the demand of practical application, The adjustment for carrying out elasticity, is not limited by a specific structure.
Figure 12 is the circuit diagram of a kind of converter device 12 in one embodiment of the invention.
The structure of converter device 12 is similar to wind electric converter device 7 shown in Fig. 7, however converter device 12 includes The first generator-side converter wear 120A-120B between be mutually in series, and be electrically connected at electric machine 124, and converter device 12 Including the second generator-side converter wear 122A-122B between be also mutually in series, and be electrically connected at rotor machine 126.This implementation The converter device 12 of example is suitable for the larger occasion of distance between the first generator-side converter wear and the second generator-side converter wear, such as ship The current transformer series-parallel system that oceangoing ship promotes.Also, converter device 12 also includes control module 121A and 121B, controlling mechanism The mechanism that Fig. 5 may be used controls generator-side converter wear 122A-122B.Converter device 12 includes also chopper circuit, is cut Wave circuit is respectively arranged at the bus capacitor two at the bus capacitor both ends and each second generator-side converter wear of each first generator-side converter wear End.
Although this disclosure is disclosed above with embodiment, so it is not limited to this disclosure, Ren Heben Field technology personnel when can be used for a variety of modifications and variations, therefore originally take off in the spirit and scope for not departing from this disclosure Show the protection domain of content subject to the range defined depending on appended claims.

Claims (25)

1. a kind of wind electric converter device, including：
Multiple net side current transformers, each net side current transformer include the multiple net side output ports for being electrically coupled to a power grid, one First direct-flow input end mouth and one second direct-flow input end mouth, and one of any two those adjacent net side current transformers The second direct-flow input end mouth and the first direct-flow input end mouth of another net side current transformer are in series；
Multiple generator-side converter wears, each generator-side converter wear include the multiple pusher side input terminals for being electrically coupled to a rotor machine Mouth, one first direct current output port and one second direct current output port, and any two those adjacent generator-side converter wears are wherein One of the second direct current output port and the first direct current output port of another generator-side converter wear be in series, wherein those machines Side current transformer includes a main generator-side converter wear and multiple subordinate generator-side converter wears；
One direct current busbar modules, are electrically coupled between those net side current transformers and those generator-side converter wears；
Multiple subordinate pusher side control modules respectively correspond to one of those subordinate generator-side converter wears, each subordinate pusher side control Molding block is receiving and the three-phase subordinate input current of those pusher side input ports according to the corresponding appurtenant machine side current transformer Amount, one second axial general given current component and the corresponding appurtenant machine side current transformer this first and second DC output end A subordinate DC voltage amount between mouthful generates three-phase dependent voltage control signal and controls the corresponding subordinate generator-side converter wear, Wherein each subordinate pusher side control module generates one second axial subordinate according to the corresponding subordinate DC voltage amount and independently gives Constant current component；And
One main pusher side control module corresponds to the main generator-side converter wear, defeated to receive those subordinate pusher side control modules The second axial subordinate gone out independently gives current component and generates one second axial subordinate independently to constant current total amount, and according to right Should main generator-side converter wear those pusher side input ports the main input current amount of a three-phase and the second axial subordinate it is only It stands and mainly independently gives current component to constant current total amount, the second axial general given current component, a first axis and generate One three-phase mains voltage control signal control the main generator-side converter wear, wherein the main pusher side control module generate this second Axial general given current component.
2. wind electric converter device as described in claim 1, wherein those subordinate pusher side control modules include respectively：
One current draw unit, to extract the three-phase subordinate input current amount；
One first converting unit, the three-phase subordinate input current amount is converted to a first axis subordinate current component and one Second axial subordinate current component；
One first computing unit, independently to give constant current according to the first axis subordinate current component and a first axis subordinate Component, which calculates, generates a first axis difference；
One voltage subtraction unit, to extract the subordinate DC voltage amount；
One pressure difference computing unit generates a voltage difference to be calculated according to the subordinate DC voltage amount and a reference voltage amount；
One voltage control unit independently gives current component to generate the second axial subordinate according to the voltage difference；
One second computing unit, to according to the second axial subordinate current component, the second axial general given current component Current component independently is given with the second axial subordinate calculate and generate one second axial difference, wherein this second axially general is given Constant current component and the second axial subordinate independently give current component summation subtract again the second axial direction subordinate current component with Obtain second axial difference；
One first current control unit generates a first axis dependent voltage according to the first axis difference and controls signal；
One second current control unit generates one second axial dependent voltage according to second axial difference and controls signal；And
The first axis dependent voltage is controlled signal and the second axial dependent voltage controls signal by one second converting unit Be converted to three-phase dependent voltage control signal.
3. wind electric converter device as claimed in claim 2, wherein first converting unit include the one of a d axis and a q axis Dq rotates coordinate, which corresponds to the reactive current component on the d axis, the second axial subordinate Current component corresponds to the active current on the q axis.
4. wind electric converter device as described in claim 1, the wherein main pusher side control module also include：
One current draw unit, to extract the main input current amount of the three-phase；
One first converting unit, the main input current amount of the three-phase is converted to a first axis main electrical current component and one Second axial main electrical current component；
One first computing unit, mainly independently to give constant current according to the first axis main electrical current component and the first axis Component, which calculates, generates a first axis difference；
One second computing unit, independently to give constant current according to the second axial main electrical current component, the second axial subordinate Total amount calculates with the second axial general given current component and generates one second axial difference, wherein this second axial general is given Constant current component subtracts the second axial main electrical current component, the second axial subordinate independently to constant current total amount to obtain successively Second axial difference；
One first current control unit generates a first axis mains voltage according to the first axis difference and controls signal；
One second current control unit generates one second axial mains voltage according to second axial difference and controls signal；And
The first axis mains voltage is controlled signal and the second axial mains voltage controls signal by one second converting unit Be converted to three-phase mains voltage control signal.
5. wind electric converter device as claimed in claim 4, wherein first converting unit include the one of a d axis and a q axis Dq rotates coordinate, which corresponds to the reactive current component on the d axis, the second axial current component Corresponding to the active current on the q axis.
6. wind electric converter device as described in claim 1, the wherein main pusher side control module and those subordinate pusher side controls Molding block communicates each other, the main pusher side control module to those subordinate pusher side control modules send this second it is axial it is general to Constant current component, those subordinate pusher side control modules send the second axial subordinate independently to constant current to the main pusher side module Component.
7. wind electric converter device as described in claim 1, wherein those net side current transformers become comprising a first edge net side Device, a second edge net side current transformer and at least one intermediate net side current transformer are flowed, those generator-side converter wears include one first side Edge generator-side converter wear, a second edge generator-side converter wear and at least one intermediate generator-side converter wear；
The DC bus module includes a first edge DC bus and a second edge DC bus, the first edge direct current Busbar is electrically coupled to the first direct-flow input end mouth and the first edge pusher side unsteady flow of the first edge net side current transformer Between the first direct current output port of device, which is electrically coupled to being somebody's turn to do for the second edge net side current transformer Between the second direct current output port of second direct-flow input end mouth and the second edge generator-side converter wear.
8. wind electric converter device as claimed in claim 7, wherein the DC bus module also include an at least intermediate dc Busbar, the intermediate dc bus are electrically coupled to the first direct-flow input end mouth and the intermediate machine of the intermediate net side current transformer The first direct current output port of side current transformer.
9. wind electric converter device as described in claim 1, wherein the DC bus module include multiple DC bus, respectively Be electrically coupled to the first direct-flow input end mouth of one of those corresponding net side current transformers and those generator-side converter wears its One of the first direct current output port and one of those net side current transformers the second direct-flow input end mouth and those machines Second direct current output port of one of side current transformer.
10. wind electric converter device as described in claim 1, wherein the DC bus module also include multiple bus capacitors, Be electrically coupled to respectively between the first direct-flow input end mouth and the second direct-flow input end mouth of those each net side current transformers and Between the first direct current output port and the second direct current output port of those each generator-side converter wears.
11. wind electric converter device as described in claim 1, wherein those net side output ports of those net side current transformers are logical It crosses a transformer and is electrically coupled to the power grid.
12. wind electric converter device as described in claim 1, the wherein rotor machine include multigroup winding, each this is more Group winding is electrically coupled to those pusher side input ports of those generator-side converter wears respectively.
13. wind electric converter device as described in claim 1, the wherein rotor machine be magneto alternator device, Electrical excitation synchronous power generator or influence generator device.
14. wind electric converter device as described in claim 1, the wherein number of those generator-side converter wears and those net side unsteady flows The number of device is equal.
15. wind electric converter device as described in claim 1, wherein each of generator-side converter wear is two level current transformers, Each of net side current transformer is two level current transformers；Or each of generator-side converter wear can be three-level current transformer, it is each Those net side current transformers are three-level current transformer.
16. wind electric converter device as claimed in claim 10 includes also multiple a chopper circuits, it is electrically coupled to respectively each The both ends of those bus capacitors.
17. wind electric converter device as described in claim 1 includes also multiple chopper circuits, is electrically coupled to those respectively Between the first direct current output port of generator-side converter wear and the second direct current output port.
18. a kind of wind electric converter device, including：
N net side current transformer, each net side current transformer include the multiple net side output ports for being electrically coupled to a power grid, one the One direct current input port, a neutral point input port and one second direct-flow input end mouth；
2n generator-side converter wear, each generator-side converter wear include the multiple pusher side input terminals for being electrically coupled to a rotor machine Mouth, one first direct current output port and one second direct current output port, and second direct current of 2n-1 generator-side converter wears is defeated The first direct current output port of exit port and 2n generator-side converter wears is in series, and wherein those generator-side converter wears include one main Generator-side converter wear and multiple subordinate generator-side converter wears；
One direct current busbar modules are electrically coupled between the n net side current transformer and the 2n generator-side converter wear；
Multiple subordinate pusher side control modules respectively correspond to one of those subordinate generator-side converter wears, each subordinate pusher side control Molding block is receiving and the three-phase subordinate input current of those pusher side input ports according to the corresponding appurtenant machine side current transformer Amount, one second axial general given current component and the corresponding appurtenant machine side current transformer this first and second DC output end A subordinate DC voltage amount between mouthful generates three-phase dependent voltage control signal and controls the corresponding subordinate generator-side converter wear, Wherein each subordinate pusher side control module generates one second axial subordinate according to the corresponding subordinate DC voltage amount and independently gives Constant current component；And
One main pusher side control module corresponds to the main generator-side converter wear, defeated to receive those subordinate pusher side control modules The second axial subordinate gone out independently gives current component and generates one second axial subordinate independently to constant current total amount, and according to right Should main generator-side converter wear those pusher side input ports the main input current amount of a three-phase and the second axial subordinate it is only It stands and mainly independently gives current component to constant current total amount, the second axial general given current component, a first axis and generate One three-phase mains voltage control signal control the main generator-side converter wear, wherein the main pusher side control module generate this second Axial general given current component；
Wherein n>=1.
19. wind electric converter device as claimed in claim 18, when the number of net side current transformer is n>When=2, the (n-1)th net side Second direct-flow input end mouth of current transformer is in series with the first direct-flow input end mouth of the n-th net side current transformer.
20. wind electric converter device as claimed in claim 18, wherein the DC bus module includes that 2n+1 direct current is female Line, wherein 2n-1 DC bus is electrically coupled to the first direct-flow input end mouth and the 2n-1 machines of the n-th net side current transformer Between the first direct current output port of side current transformer, 2n DC bus is electrically coupled to the neutral point of the n-th net side current transformer Input port and the second direct current output port of 2n-1 generator-side converter wears and the first direct current of 2n generator-side converter wears are defeated Between exit port, 2n+1 DC bus is electrically coupled to the second direct-flow input end mouth and 2n pusher sides of the n-th net side current transformer Between second direct current output port of current transformer.
21. wind electric converter device as claimed in claim 18, which is three-level current transformer, the pusher side unsteady flow Device is two level current transformers.
22. a kind of wind electric converter device, including：
2n net side current transformer, each net side current transformer include the multiple net side output ports for being electrically coupled to a power grid, one First direct-flow input end mouth and one second direct-flow input end mouth, and the second direct-flow input end mouth of 2n-1 net side current transformers It is in series with the first direct-flow input end mouth of 2n net side current transformers；
N generator-side converter wear, each generator-side converter wear include the multiple pusher side input terminals for being electrically coupled to a rotor machine Mouth, one first direct current output port, a neutral point output port and one second direct current output port, wherein those pusher side unsteady flows Device includes a main generator-side converter wear and multiple subordinate generator-side converter wears；
One direct current busbar modules are electrically coupled between the 2n net side current transformer and the generator-side converter wear；
Multiple subordinate pusher side control modules respectively correspond to one of those subordinate generator-side converter wears, each subordinate pusher side control Molding block is receiving and the three-phase subordinate input current of those pusher side input ports according to the corresponding appurtenant machine side current transformer Amount, one second axial general given current component and the corresponding appurtenant machine side current transformer this first and second DC output end A subordinate DC voltage amount between mouthful generates three-phase dependent voltage control signal and controls the corresponding subordinate generator-side converter wear, Wherein each subordinate pusher side control module generates one second axial subordinate according to the corresponding subordinate DC voltage amount and independently gives Constant current component；And
One main pusher side control module corresponds to the main generator-side converter wear, defeated to receive those subordinate pusher side control modules The second axial subordinate gone out independently gives current component and generates one second axial subordinate independently to constant current total amount, and according to right Should main generator-side converter wear those pusher side input ports the main input current amount of a three-phase and the second axial subordinate it is only It stands and mainly independently gives current component to constant current total amount, the second axial general given current component, a first axis and generate One three-phase mains voltage control signal control the main generator-side converter wear, wherein the main pusher side control module generate this second Axial general given current component；
Wherein n>=1.
23. wind electric converter device as claimed in claim 22, when the number of generator-side converter wear is n>When=2, the (n-1)th pusher side Second direct current output port of current transformer is in series with the first direct current output port of the n-th generator-side converter wear.
24. wind electric converter device as claimed in claim 22, wherein the DC bus module includes that 2n+1 direct current is female Line, wherein 2n-1 DC bus is electrically coupled to the first direct-flow input end mouth and the n-th pusher side of 2n-1 net side current transformers Between the first direct current output port of current transformer, 2n DC bus be electrically coupled to 2n-1 net side current transformers this is second straight The neutral point of the first direct-flow input end mouth and the n-th generator-side converter wear for flowing input port and 2n net side current transformers exports Between port, 2n+1 DC bus is electrically coupled to the second direct-flow input end mouth and the n-th pusher side of 2n net side current transformers Between the second direct current output port of current transformer.
25. wind electric converter device as claimed in claim 22, which is two level current transformers, the pusher side unsteady flow Device is three-level current transformer.
CN201510094313.2A 2014-09-05 2015-03-03 Wind electric converter device and converter device Active CN105990846B (en)

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US15/674,512 US10027239B2 (en) 2014-09-05 2017-08-10 Wind power converter device and converter device
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