CN101188396B - Excitation circuit for dual feedback asynchronous wind force generator unit - Google Patents
Excitation circuit for dual feedback asynchronous wind force generator unit Download PDFInfo
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- CN101188396B CN101188396B CN2007101506805A CN200710150680A CN101188396B CN 101188396 B CN101188396 B CN 101188396B CN 2007101506805 A CN2007101506805 A CN 2007101506805A CN 200710150680 A CN200710150680 A CN 200710150680A CN 101188396 B CN101188396 B CN 101188396B
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Abstract
The invention discloses an excitation circuit of a double-feed asynchronous wind turbine, which includes an energy converter and a controller. The energy converter includes a commutating unit, an energy dissipating unit, an inverting unit, and a drive circuit. The commutating unit is connected with the inverting unit; the input end of the commutating unit acting as the input end of the energy converter 14 is connected with the secondary edge of a transformer; the output end of the inverting unit is connected with the output end of the energy dissipating unit, and is connected with the input end of a rotor contact as the output end of the energy converter. The output end of a digital signal processor of the controller is connected to the input end of the inverting unit after being seriallyconnected into the drive circuit. The invention has the advantages that the cost of the hardware is lowered greatly, the complexity of the control arithmetic of the low-excitation circuit is lowered obviously; the separate adjustments of the active power and the reactive power in the wide rotation speed range are realized, and the factors of the outputted power of the generator can be adjusted and controlled.
Description
Technical field
What the present invention relates to is the variable speed constant frequency dual-feed asynchronous wind power generator group, particularly be the field circuit of dual-feed asynchronous wind power generator group.
Background technology
The variable speed constant frequency dual-feed asynchronous wind power generator group of prior art comprises: blower fan, the coiled pipe type asynchronous generator that is connected with blower fan, the generator amature winding connects an energy converter, energy converter connects controller, form the field circuit of dual-feed asynchronous wind power generator group by controller and energy converter, the electric energy that generator sends is connected to the grid.
Fig. 3 is that prior art energy converter circuit connects block diagram.As shown in Figure 3, energy converter 20 in the above-mentioned prior art field circuit is by Intelligent Power Module 1, Intelligent Power Module 2 and the dipulse width modulated current transformer that electric capacity 3 is formed, and wherein Intelligent Power Module 2 is connected to the rotor contactor 10 of dual-feed asynchronous wind power generator 13; Intelligent Power Module 1 is connected on the transformer 1, and electric capacity 3 connects two Intelligent Power Module 1 and Intelligent Power Module 2.Described controller 16 is made up of two first digital signal processors 7,9, and first digital signal processor 7 is connected to the drive circuit 17 of Intelligent Power Module 1; Second digital signal processor 9 is connected to the drive circuit 17 of Intelligent Power Module 2.
The defective that the field circuit of above-mentioned prior art exists is: need controlled power electronic device many, the current transformer cost is higher, the control technology complexity.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned technology, a kind of reduction rotor current transformer hardware cost is provided, simplify the variable speed constant frequency doubly-fed wind-powered electricity generation unit field circuit of control program.
The technical scheme that solves the problems of the technologies described above is: a kind of field circuit of dual-feed asynchronous wind power generator group, this field circuit comprises energy converter and controller, described controller comprises first digital signal processor, second digital signal processor and double-port RAM, and described energy converter comprises: rectification unit, energy consumption unit, inversion unit and drive circuit; Described rectification unit connects inversion unit, shunt capacitance on the connected node of rectification unit and inversion unit; The input of rectification unit connects the secondary of transformer as the energy converter input; The inversion unit output connects the input of the output of energy consumption unit as energy converter output connection rotor contactor; Receive energy consumption unit input behind one the first digital signal processor output tandem drive circuit of described controller, receive the inversion unit input behind another of controller second digital signal processor output tandem drive circuit.
The invention has the beneficial effects as follows: the hardware cost that has 1. significantly reduced existing speed variant frequency constant dual feedback asynchronous wind generator system energy converter; 2. reduced the complexity of field circuit control algolithm significantly; 3. can realize the wide speed range operation of generator, in the velocity interval of whole permission, can gain merit, the reactive power independent regulation that the output power factor of generator can be regulated and control simultaneously.
Description of drawings
Fig. 1 is the connection diagram of circuit of the present invention;
Fig. 2 is the connection diagram of digital signal processor and gated transistor among Fig. 1;
Fig. 3 is that prior art energy converter circuit connects block diagram.
" sequence number explanation in the accompanying drawing "
1: transformer 2: power diode 3: electric capacity 4: gated transistor
5: rectification unit 6: energy consumption unit 7 (DSP1): first digital signal processor
8: double-port RAM 9 (DSP2): second digital signal processor
10: rotor contactor 11: blower fan 12: grid-connecting apparatus
13: dual-feed asynchronous wind power generator 14: energy converter 15: inversion unit
16: controller 17: drive circuit 20: the energy converter of prior art
21: power amplification circuit 22: photoelectric isolating circuit 23: the insulating power supply circuit
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
Use the parts of prior art among the present invention, use the same sequence number mark.
The invention provides a kind of field circuit of dual-feed asynchronous wind power generator group, this field circuit comprises energy converter 14 and controller 16, described controller 16 comprises first digital signal processor 7, second digital signal processor 9 and double-port RAM 8, and described energy converter 14 comprises: rectification unit 5, energy consumption unit 6, inversion unit 15 and drive circuit 17; Described rectification unit 5 connects inversion unit 15, at the connected node d of rectification unit 5 and inversion unit 15, and the last shunt capacitance 3 of e; The input a of rectification unit 5, b, c connect the secondary of transformer 1 as energy converter 14 inputs; Inversion unit 15 outputs connect the output of energy consumption unit 6 as energy converter 14 Ausgangs, g, and h connects the input of rotor contactor 10; Receive energy consumption unit 6 inputs behind first digital signal processor, the 7 output tandem drive circuit 17 of described controller 16, receive inversion unit 15 inputs behind second digital signal processor, the 9 output tandem drive circuit 17 of controller 16.
Described rectification unit 5 is: the three-phase bridge rectifier circuit of being made up of 6 power diodes 2, the input a of this rectification unit 5, b, c connects the secondary of transformer 1, the output d of rectification unit 5, e connects inversion unit 15, and the node d between rectification unit 5 and inversion unit 15 connects electric capacity 3 between the e.
Described energy consumption unit 6 comprises: 4,6 power diodes 2 of a gated transistor and three energy consumption resistance R1, R2, R3; Wherein grid tandem drive circuit 17 backs of gated transistor 4 connect first digital signal processor 7 in the controller 16,3 groups of power diodes 2 in parallel between the emitter and collector of gated transistor 4, every group of power diode 2 all is made up of the power diode 2 of 2 polyphones, node n between the power diode 2 of every group of polyphone, m, the input of connection rotor contactor 10 behind connect respectively on the k three energy consumption resistance R1, R2, the R3.
Described inversion unit 15 comprises the gated transistor 4 of 3 groups of band inverse parallel diodes in parallel, the gated transistor 4 of every group of band inverse parallel diode all is made up of the gated transistor 4 of 2 polyphone band inverse parallel diodes, node f between the gated transistor 4 of every group of band inverse parallel diode of contacting, g, h connects the input of rotor contactor 10.
Described controller 16 comprises: first digital signal processor 7, second digital signal processor 9 and a double-port RAM 8, the input of double-port RAM 8 and output are received first digital signal processor 7 and second digital signal processor 9 respectively.Described first digital signal processor 7 and second digital signal processor 9 are TMS320F2812 chips that Texas Instruments produces.
Described drive circuit 17 comprises: photoelectric isolating circuit 22, power amplification circuit 21 and insulating power supply circuit 23; The syndeton of drive circuit is: first digital signal processor 7 is connected to the input of photoelectric isolating circuit 22, the output of photoelectric isolating circuit 22 is connected to the input of power amplification circuit 21, the output of power amplification circuit 21 is connected to the grid of gated transistor 4, and insulating power supply circuit 23 is connected to the power end of power amplification circuit 21.
Effect below in conjunction with description of drawings field circuit of the present invention.
Described energy converter comprises rectification unit, energy consumption unit and inversion unit, and rectification unit is made up of 6 power diodes; The energy consumption unit is made up of a gated transistor, three-phase commutation bridge and the external power resistor of three-phase, and three-phase commutation bridge is made up of 6 power diodes; Inversion unit is made of 6 gated transistors, has significantly reduced the hardware cost of existing speed variant frequency constant dual feedback asynchronous wind generator system energy converter; Reduced the complexity of field circuit control algolithm significantly.The high-speed data disposal ability of digital signal processor TMS320F2812 has ensured accuracy, real-time and the flexibility of system, has improved the whole efficiency of variable speed constant frequency dual-feed asynchronous wind power generator group, and control algolithm is easy to realize.
Claims (7)
1. the field circuit of a dual-feed asynchronous wind power generator group, this field circuit comprises energy converter (14) and controller (16), described controller (16) comprises first digital signal processor (7), second digital signal processor (9) and double-port RAM (8), it is characterized in that described energy converter (14) comprising: rectification unit (5), energy consumption unit (6), inversion unit (15) and drive circuit (17); Described rectification unit (5) connects inversion unit (15), at connected node (d, e) the last shunt capacitance (3) of rectification unit (5) and inversion unit (15); (a, b c) connect the secondary of transformer (1) to the input of rectification unit (5) as energy converter (14) input; Inversion unit (15) output connects the output of energy consumption unit (6) as energy converter (14) output (f, g, h) input of connection rotor contactor (10); Receive energy consumption unit (6) input behind first digital signal processor (7) the output tandem drive circuit (17) of described controller (16), receive inversion unit (15) input behind second digital signal processor (9) the output tandem drive circuit (17) of controller (16).
2. according to the field circuit of the group of dual-feed asynchronous wind power generator described in the claim 1, it is characterized in that, described rectification unit (5) is: the three-phase bridge rectifier circuit of being made up of 6 power diodes (2), the input of this rectification unit (5) (a, b, c) secondary of connection transformer (1), output (the d of rectification unit (5), e) connect inversion unit (15), (d connects electric capacity (3) between e) to the node between rectification unit (5) and inversion unit (15).
3. according to the field circuit of the group of dual-feed asynchronous wind power generator described in the claim 1, it is characterized in that described energy consumption unit (6) comprising: a gated transistor (4), 6 power diodes (2) and three energy consumption resistances (R1, R2, R3); Wherein the grid tandem drive circuit (17) of gated transistor (4) back connects first digital signal processor (7) in the controller (16), 3 groups of power diodes in parallel (2) between the emitter and collector of gated transistor (4), every group of power diode (2) all is made up of the power diode (2) of 2 polyphones, node (n between the power diode (2) of every group of polyphone, m, three energy consumption resistances (R1, R2, R3) back of connecting respectively on k) connects the input of rotor contactors (10).
4. according to the field circuit of the group of dual-feed asynchronous wind power generator described in the claim 1, it is characterized in that, described inversion unit (15) comprises the gated transistor (4) of 3 groups of band inverse parallel diodes in parallel, the gated transistor (4) of every group of band inverse parallel diode all is made up of the gated transistor (4) of 2 polyphone band inverse parallel diodes, node (f between the gated transistor (4) of every group of band inverse parallel diode of contacting, g, h) input of connection rotor contactor (10).
5. according to the field circuit of the group of dual-feed asynchronous wind power generator described in the claim 1, it is characterized in that, described controller (16) comprising: first digital signal processor (7), second digital signal processor (9) and a double-port RAM (8), the input of double-port RAM (8) and output are received first digital signal processor (7) and second digital signal processor (9) respectively.
6. according to the field circuit of the dual-feed asynchronous wind power generator group described in the claim 1, it is characterized in that described first digital signal processor (7) and second digital signal processor (9) are the TMS320F2812 chips that Texas Instruments produces.
7. according to the field circuit of the dual-feed asynchronous wind power generator group described in the claim 1, it is characterized in that described drive circuit (17) comprising: photoelectric isolating circuit (22), power amplification circuit (21) and insulating power supply circuit (23); The syndeton of drive circuit is: first digital signal processor (7) is connected to the input of photoelectric isolating circuit (22), the output of photoelectric isolating circuit (22) is connected to the input of power amplification circuit (21), the output of power amplification circuit (21) is connected to the grid of gated transistor (4), and insulating power supply circuit (23) is connected to the power end of power amplification circuit (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101506805A CN101188396B (en) | 2007-12-03 | 2007-12-03 | Excitation circuit for dual feedback asynchronous wind force generator unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101506805A CN101188396B (en) | 2007-12-03 | 2007-12-03 | Excitation circuit for dual feedback asynchronous wind force generator unit |
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| Publication Number | Publication Date |
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| CN101188396A CN101188396A (en) | 2008-05-28 |
| CN101188396B true CN101188396B (en) | 2010-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101506805A Expired - Fee Related CN101188396B (en) | 2007-12-03 | 2007-12-03 | Excitation circuit for dual feedback asynchronous wind force generator unit |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170259B (en) * | 2010-02-25 | 2015-03-11 | 陈国宝 | Multi-stator wind power generation and ventilation dual-purpose machine controller |
| CN102931677A (en) * | 2012-10-08 | 2013-02-13 | 郁百超 | Micro-power-consumption asynchronous wind power generator |
| CN104734197A (en) * | 2015-04-15 | 2015-06-24 | 深圳市长昊机电有限公司 | Doubly-fed current transformer system and doubly-fed wind power generation unit |
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