CN204103787U - A kind of dual-feed asynchronous wind power generator grid side converter control system - Google Patents
A kind of dual-feed asynchronous wind power generator grid side converter control system Download PDFInfo
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- CN204103787U CN204103787U CN201420508992.4U CN201420508992U CN204103787U CN 204103787 U CN204103787 U CN 204103787U CN 201420508992 U CN201420508992 U CN 201420508992U CN 204103787 U CN204103787 U CN 204103787U
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Abstract
The utility model discloses a kind of dual-feed asynchronous wind power generator grid side converter control system, electrical network (5) is connected with grid side converter (7) through inlet wire inductance; Current sensor (8) is connected with electrical network (5), signal conditioning circuit (11); Voltage sensor (9) is connected with storage capacitor, signal conditioning circuit (11); Phase-locked loop (10) is connected with electrical network (5), dsp controller (12); Signal drive circuit (13) is connected with grid side converter (7) and dsp controller (12).The utility model has that performance is higher, the more feature of function, is applicable to applying.
Description
Technical field
The utility model belongs to technical field of wind power generation, relates to a kind of dual-feed asynchronous wind power generator grid side converter control system, specifically, relates to a kind of dual-feed asynchronous wind power generator grid side converter control system based on TMS320F28335.
Background technology
The energy is the important substance basis of human survival and development, but at present, along with the big factors such as the energy crisis in global range, environmental pollution and climate change all greatly facilitate the development and utilization of regenerative resource.Wherein, wind energy is one of clean reliable regenerative resource, and the wind energy reserves of China's abundant make wind energy have becomes the resource base of important component part in future source of energy structure.In wind power generation research, now widely used is the speed variant frequency constant dual feedback asynchronous wind generator system of AC excitation, and it implements AC excitation by converters to rotor.This system adopts dual-feed asynchronous wind power generator (DFIG), stator directly mounts electrical network, rotor realizes excitation by three-phase ac-dc-ac transform device, and electrical power can be passed through stator, rotor binary channels and electrical network and realize exchanging, and can realize meritorious, idle flexible control simultaneously.Under desirable grid conditions, grid side converter adopts the two close cycles vector control of grid voltage orientation, stablizing of major control DC bus-bar voltage, and obtains good interchange input performance.
China Patent Publication No. CN102694394A, publication date on September 26th, 2012, wind-driven generator net side converter current control method and system when the name of innovation and creation is called unbalanced power supply, that application discloses the control method of double-fed wind power generator during a kind of unbalanced power supply, its weak point is too general on controller is selected, and introduces.In addition, domestic existing controller mostly adopts 8 single-chip microcomputers, and minority 16 single-chip microcomputers, also do not adopt 32 fixed DSPs.8 single-chip microcomputers and 16 single-chip microcomputers, arithmetic speed is slow, and hardware circuit is complicated, is therefore badly in need of researching and solving.
Utility model content
The purpose of this utility model is to overcome the defect that above-mentioned technology exists, and provides that a kind of performance is higher, function more dual-feed asynchronous wind power generator grid side converter control system.Its concrete technical scheme is:
A kind of dual-feed asynchronous wind power generator grid side converter control system, electrical network 5 is connected with grid side converter 7 through inlet wire inductance; Current sensor 8 is connected with electrical network 5, signal conditioning circuit 11; Voltage sensor 9 is connected with storage capacitor, signal conditioning circuit 11; Phase-locked loop 10 is connected with electrical network 5, dsp controller 12; Signal drive circuit 13 is connected with grid side converter 7 and dsp controller 12.
Preferably, current sensor 8 uses the LA58-P Hall current sensor of LEM company; Voltage sensor 9 uses the LV28-P Hall voltage transducer of LEM company; The chip model of dsp controller 12 is TMS320F28335.
Compared with prior art, the beneficial effects of the utility model are:
1. arithmetic speed is faster, and operational precision is higher, and cost performance is better;
2. PHASE-LOCKED LOOP PLL TECHNIQUE obtains the frequency of line voltage, phase place and amplitude;
3., under desirable grid conditions, more can effectively keep the constant of DC voltage, and maintain unity power factor;
4. control circuit adopts digital control, eliminate temperature drift that conventional simulation control mode exists, the shortcomings such as control precision is on the low side, improve the control flexibility of system, add the using function of equipment, the number of hardware configuration and device is significantly reduced, improves the reliability of system.
Accompanying drawing explanation
Fig. 1 is double-fed asynchronous wind generator system block diagram;
Fig. 2 is the dual-feed asynchronous wind power generator grid side converter control system block diagram based on TMS320F28335;
Fig. 3 is the dual-feed asynchronous wind power generator grid side converter double-closed-loop control schematic diagram of grid voltage orientation.In figure, 1 wind energy conversion system, 2 multistage gear cases, 3 double-fed asynchronous generators, 4 transformers, 5 electrical networks, 6 rotor-side converters, 7 grid side converters, 8 current sensors, 9 voltage sensors, 10 phase-locked loops, 11 signal conditioning circuits, 12TMS320F28335 controller, 13 signal drive circuits.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with the drawings and specific embodiments, setting forth the utility model further.
1. double-fed asynchronous wind generator system general embodiment
Double-fed asynchronous wind generator system as shown in Figure 1, comprises wind energy conversion system 1, multistage gear case 2, double-fed asynchronous generator 3, transformer 4, electrical network 5, rotor-side converter 6 and grid side converter 7.This system adopts dual-feed asynchronous wind power generator (DFIG), and stator directly mounts electrical network, and rotor realizes excitation by three-phase ac-dc-ac transform device, and electrical power realizes exchanging by stator, rotor binary channels and electrical network.
2. dual-feed asynchronous wind power generator grid side converter control system general embodiment
Based on TMS320F28335 dual-feed asynchronous wind power generator grid side converter control system as shown in Figure 2, dual-feed asynchronous wind power generator grid side converter control system mainly gathers current value by current sensor 8 from electrical network end, gathers DC voltage value with voltage sensor 9.Sampling and after signal conditioning circuit 11, be converted to digital signal by analog signal, enter TMS320F28335 controller 12, export SVPWM signal, after signal drive circuit 13, obtain the drive singal of 6 switching tubes, trigger rectifier bridge 6 switching tube break-makes.
The selection of 3.DSP control chip
In Fig. 2 in the chip type selecting of dsp controller 12, have chosen TMS320F28335.TMS320F28335 is 32 fixed DSPs of a high-performance for controlling, multi-functional, high performance-price ratio.It incorporates the optimum performance of DSP and microcontroller, its central processing unit deal with data adopts Harvard's bus structures pattern, instruction fetch, read data are conciliate data manipulation can carry out in one-period simultaneously, Control System Design for function complexity provides conveniently, simultaneously because its cost performance is high, be applied to more and more in electric power coversion system and automation control system.
4. current sample principle
Current sensor 8 uses the LA58-P Hall current sensor of LEM company.This current sensor no-load voltage ratio is 1:1000, and the specified effective value electric current of secondary is 50mA, primary current measuring range 0 ~ ± 70A.It completes samples to electrical network in Fig. 28 electric current, the sampled signal of acquisition is input to signal conditioning circuit 11, gives the A/D modular converter of TMS320F28335 controller 12 after filtering and signal condition.
5. voltage sample principle
Voltage sensor 9 uses the LV28-P Hall voltage transducer detectable voltage signals of LEM company, and this voltage sensor transfer ratio is 2500:1000, and the specified effective current of secondary is 25mA, and voltage effective range is 10V ~ 500V.It completes samples to DC side output voltage in Fig. 2, the signal that obtains of sampling by signal conditioning circuit 11 after filtering, conversion process gives the A/D modular converter of TMS320F28335 controller 12.
6. dual-feed asynchronous wind power generator grid side converter control principle drawing as shown in Figure 3.Grid side converter adopts the two close cycles vector control of grid voltage orientation, and wherein all control algorithms all complete in TMS320F28335 controller 12.
The above; be only the utility model preferred forms; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses, the simple change of the technical scheme that can obtain apparently or equivalence are replaced and are all fallen in protection range of the present utility model.
Claims (2)
1. a dual-feed asynchronous wind power generator grid side converter control system, is characterized in that, electrical network (5) is connected with grid side converter (7) through inlet wire inductance; Current sensor (8) is connected with electrical network (5), signal conditioning circuit (11); Voltage sensor (9) is connected with storage capacitor, signal conditioning circuit (11); Phase-locked loop (10) is connected with electrical network (5), dsp controller (12); Signal drive circuit (13) is connected with grid side converter (7) and dsp controller (12).
2. dual-feed asynchronous wind power generator grid side converter control system according to claim 1, its feature is, current sensor (8) uses the LA58-P Hall current sensor of LEM company; Voltage sensor (9) uses the LV28-P Hall voltage transducer of LEM company; The chip model of dsp controller (12) is TMS320F28335.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508992.4U CN204103787U (en) | 2014-09-04 | 2014-09-04 | A kind of dual-feed asynchronous wind power generator grid side converter control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508992.4U CN204103787U (en) | 2014-09-04 | 2014-09-04 | A kind of dual-feed asynchronous wind power generator grid side converter control system |
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| Publication Number | Publication Date |
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| CN204103787U true CN204103787U (en) | 2015-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420508992.4U Expired - Fee Related CN204103787U (en) | 2014-09-04 | 2014-09-04 | A kind of dual-feed asynchronous wind power generator grid side converter control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790313A (en) * | 2016-05-31 | 2016-07-20 | 上海电机学院 | Intelligent grid-connected device of direct-drive wind power generation system |
| CN105896608A (en) * | 2016-06-16 | 2016-08-24 | 上海电机学院 | Wind power integration control system and method based on single chip microcomputer |
-
2014
- 2014-09-04 CN CN201420508992.4U patent/CN204103787U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790313A (en) * | 2016-05-31 | 2016-07-20 | 上海电机学院 | Intelligent grid-connected device of direct-drive wind power generation system |
| CN105896608A (en) * | 2016-06-16 | 2016-08-24 | 上海电机学院 | Wind power integration control system and method based on single chip microcomputer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20160904 |