CN206041516U - Double -fed aerogenerator low voltage ride through device that phase -wound rotor is brushless - Google Patents

Double -fed aerogenerator low voltage ride through device that phase -wound rotor is brushless Download PDF

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Publication number
CN206041516U
CN206041516U CN201621028720.XU CN201621028720U CN206041516U CN 206041516 U CN206041516 U CN 206041516U CN 201621028720 U CN201621028720 U CN 201621028720U CN 206041516 U CN206041516 U CN 206041516U
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China
Prior art keywords
low voltage
module
voltage ride
wind
acquisition module
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Expired - Fee Related
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CN201621028720.XU
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Chinese (zh)
Inventor
樊军
吴限富
李明才
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BEIJING SOLARWE CLEANING ENERGY TECHNOLOGY CO LTD
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BEIJING SOLARWE CLEANING ENERGY TECHNOLOGY CO LTD
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects

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Abstract

The utility model provides a double -fed aerogenerator low voltage ride through device that phase -wound rotor is brushless, include: the control modul, control module is connected with signal acquisition module and converter module, converter module passes through transformer II and connects the electric wire netting, converter module passes through control winding and connects brushless double -fed aerogenerator, brushless double -fed aerogenerator passes through power windings and connects transformer I, the electric wire netting is connected to the transformer I other end, the wind energy conversion system is connected to the signal acquisition module, brushless double -fed aerogenerator connects the wind energy conversion system, control module is used for receiving the signal of signal acquisition module, according to the signal of signal acquisition module calculates and controls the output of converter module electric current to in the grid voltage back that returns to normal, withdraw from the low voltage ride through state through the brushless double -fed aerogenerator of control winding control, the utility model discloses do not need extra subassembly, realize highly reliable, high dynamic response, it is sturdy and durable.

Description

Phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device
Technical field
The utility model belongs to brushless double feed generator technical field, more particularly to a kind of phase-wound rotor brushless double feed wind Power generator low voltage ride through device.
Background technology
As national new forms of energy develop the clear and definite of circuit, the development of wind power industry is closed by increasing people Note and expectation.For meeting in the case where wind-force speed is changeable, the demand of variable speed constant frequency generator, researcher can be better met Propose and employ alternating current generator and its control method of various versions.Brushless dual-feed motor is exactly this respect in recent years A kind of New-type electric machine of research.
Wind speed has randomness and intermittent feature, and this will cause have larger fluctuation after wind power generation set grid-connection Property and the unstability of output.With the increase of wind-power electricity generation installed capacity, improve wind power generating set reliability of operation And autoprotection increasingly becomes the outstanding problem for ensureing electric power netting safe running.
In order to tackle many unfavorable factors, countries in the world have formulated wind power-generating grid-connected specification in succession, send out for wind-force The reliability that group of motors is incorporated into the power networks proposes specific requirement.Very protrusion is exactly, in the case of the Voltage Drop of electrical network, wind-force Generating set can accomplish not off-grid operation, that is, usually said low voltage crossing (Low-voltage Ride Through, LVRT) technology.
Brushless dual-feedback wind power generator is by two sets of separate stator winding (power winding and controling winding) and rotor Composition, by the way of electric network source and variable-frequency power sources are fed simultaneously, adjusts the power supply reality of controling winding using reversible frequency converter The now control to motor.
The power winding of brushless dual-feedback wind power generator and controling winding share a set of iron core, without straight between double winding The electromagnetic coupled for connecing.Eliminate brush and slip ring on electric machine structure, simple structure is sturdy and durable, with little need for safeguard or The minimal amount of maintenance of person.And, many advantages, such as the power factor regulation of such motor possesses synchronous machine characteristic.
For the New-type electric machine of this excellent performance, lack brushless dual-feedback wind power generator group low voltage crossing technology at present The research of aspect and the practicable techniques of actual requirement of engineering can be met.Therefore, send out to meet more and more harsh wind-force Advanced low voltage ride through device is badly in need of in the grid-connected requirement of electricity, such brushless dual-feedback wind power generator.
Utility model content
The utility model proposes a kind of phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device, solves existing Lack the research of brushless dual-feedback wind power generator group low voltage crossing technical elements in having technology and Practical Project need can be met The problem of the practicable techniques wanted.
What the technical solution of the utility model was realized in：Phase-wound rotor brushless dual-feedback wind power generator low-voltage is worn More device, including：Control module, the control module are connected with signal acquisition module and become flow module, and the change flow module leads to Transformer II connection electrical networks are crossed, the change flow module connects brushless dual-feedback wind power generator by controling winding, described brushless double Feedback wind-driven generator connects electrical network, the signals collecting mould by power winding connection transformer I, the transformer I other ends Block connects wind energy conversion system, and the brushless dual-feedback wind power generator connects the wind energy conversion system, and the control module, for receiving the letter The signal of number acquisition module, is calculated and is controlled the defeated of the unsteady flow blocks current according to the signal of the signal acquisition module Go out, and after line voltage recovers normal, brushless dual-feedback wind power generator entrance is controlled by controling winding or low-voltage is exited Pass through state.
As one kind preferred embodiment, contactor K2 is provided between the transformer II and change flow module.
As one kind preferred embodiment, contactor K1 is provided between the power winding and transformer I.
As one kind preferred embodiment, the signal acquisition module includes voltage acquisition module and current acquisition mould Block.
As one kind preferred embodiment, the wind energy conversion system connects the brushless double feed wind-power electricity generation by gear-box Machine.
As one kind preferred embodiment, the control module is connected with communication module.
As one kind preferred embodiment, the control module is connected with man-machine interface
As one kind preferred embodiment, the current collection circuit includes filter circuit and change-over circuit.
As one kind preferred embodiment, the voltage collection circuit includes filter circuit and change-over circuit.
After employing above-mentioned technical proposal, the beneficial effects of the utility model are：Low voltage ride through device simple structure, into This is low, and control method is realized easy, it is not necessary to increase extra nextport hardware component NextPort, safe and reliable to operation, can real-time monitoring it is brushless The running status of double-fed wind power generator, can realize high dynamic response control.And the control method controls brushless double feed wind When power generator runs, noise is less, improves the life-span of brushless dual-feedback wind power generator.And the low voltage ride through device and Method applicability is strong, can use the brushless dual-feedback wind power generator in various models.
Description of the drawings
In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art, below will be to embodiment Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid Put, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is structural representation of the present utility model；
FB(flow block)s of the Fig. 2 for phase-wound rotor brushless dual-feedback wind power generator low-voltage ride-through method；
Fig. 3 is the control of vector adaptive algorithm in phase-wound rotor brushless dual-feedback wind power generator low-voltage ride-through method Flow chart.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only the utility model a part of embodiment, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment for being obtained, belongs to the scope of the utility model protection.
Fig. 1 is the structural representation of this phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device, including connecing Tentaculum K1, for power winding and the break-make of transformer I, power winding side transformer I is used for grid-connected boosting；Also include contactor K2, for low voltage ride through device and the break-make of transformer II, transformer II provides power supply for giving low voltage ride through device；Also Including signal acquisition module, for gathering voltage and current signal, the controling winding of brushless dual-feedback wind power generator power winding Voltage and current signal, power network signal, wind energy conversion system signal；Also include becoming flow module, for brushless dual-feedback wind power generator Control electric current needed for output；Also include control module, for receiving the signal of the signal acquisition module, according to the signal The signal of acquisition module is calculated and is controlled the output of the unsteady flow blocks current；Also include man-machine interface and communication module, The man-machine interface and the communication module are connected with the control module, and the man-machine interface and the communication module are used for connecing The ruuning situation of operational order and reponse system outside receiving；The signal acquisition module includes that current collection circuit and voltage are adopted Collector；Current collection circuit and voltage collection circuit include filter circuit and change-over circuit.
FB(flow block)s of the Fig. 2 for phase-wound rotor brushless dual-feedback wind power generator low-voltage ride-through method, including following step Suddenly：
(1) brushless dual-feedback wind power generator group has been incorporated into the power networks；
(2) signal acquisition module real-time detection line voltage；
(3) detect line voltage to fall；
(4) brushless dual-feedback wind power generator group enters low voltage crossing state；
(5) control module performs vector adaptive algorithm according to line voltage, current generated output, change propeller angle；
(6) control module performs protection restricted program simultaneously；
(7) control module performs output voltage control, output current according to the calculated data of vector adaptive algorithm Control, pitch control；
(8) control module drives the output for becoming flow module realization to controling winding；
(9) in whole low voltage crossing state procedure, repeat above step, it is ensured that wind power generating set does not take off Net, unit fault-free；
(10) line voltage progressively recovers in normal processes, and control module is according to line voltage, current generated output, change oar Send instructions under angle, wind energy turbine set, continue executing with vector adaptive algorithm；
(11), after line voltage recovers normal, control module is according to the current active power for generating electricity, reactive power, wind energy turbine set Under send instructions, continue control unit normal power generation operation；
(12) brushless dual-feedback wind power generator group exits low voltage crossing state.
The service data in control module monitor in real time brushless dual-feedback wind power generator running in this control method, And change the electric current for becoming that flow module is provided to brushless dual-feedback wind power generator in time.
Fig. 3 is the control of vector adaptive algorithm in phase-wound rotor brushless dual-feedback wind power generator low-voltage ride-through method Flow chart, the vector adaptive algorithm flow process in the present invention are comprised the following steps：
(1) according to generator parameter, wind energy conversion system signal, calculate generator excitation；
(2) the power winding three-phase electric current for obtaining signal acquisition module transforms to two-phase rotation by three-phase static coordinate system Coordinate system, the two-phase rotating coordinate system include pM axles and pT axles, obtain current component of the power winding on pM axles and pT axles ipM、ipT, ipMAnd ipTInitial value is acquiescence set-point；
(3) the controling winding three-phase current for obtaining signal acquisition module transforms to two-phase rotation by three-phase static coordinate system Coordinate system, the two-phase rotating coordinate system include cM axles and cT axles, obtain current component of the controling winding on cM axles and cT axles icM、icT, icMAnd icTInitial value is acquiescence set-point；
(4) the running current upper limit according to generator excitation and setting, calculates given value of current value i of controling winding* cM、 i* cT；
(5) according to ipM、ipT、i* cM、i* cT, the three-phase voltage U of controling winding is calculated by decoupling self-adaptive algorithmcU、 UcV、UcW, and the three-phase voltage of controling winding is made into U by driving change flow modulecU、UcV、UcW；
(6) active power, the reactive power output of generator by the Power Control in adaptive algorithm, are adjusted；
(7) instructed according to control module, repeat above-mentioned calculating.
The low voltage ride through device simple structure of the present invention, low cost, control method are realized easy, it is not necessary to increase extra Nextport hardware component NextPort, it is safe and reliable to operation, be capable of the running status of real-time monitoring brushless dual-feedback wind power generator, can realize high dynamic State response control.And during control method control brushless dual-feedback wind power generator operation, noise is less, improves brushless double feed The life-span of wind-driven generator.And the low voltage ride through device and method applicability are strong, can use in the brushless of various models Double-fed wind power generator.
Preferred embodiment of the present utility model is the foregoing is only, it is not to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model Protection domain within.

Claims (9)

1. phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device, it is characterised in that include：Control module, institute State control module to be connected with signal acquisition module and become flow module, the change flow module connects electrical network by transformer II, described Become flow module and brushless dual-feedback wind power generator is connected by controling winding, the brushless dual-feedback wind power generator passes through power winding Connection transformer I, the transformer I other ends connect electrical network, and the signal acquisition module connects wind energy conversion system, the brushless double feed Wind-driven generator connects the wind energy conversion system, and the control module, for receiving the signal of the signal acquisition module, according to described The signal of signal acquisition module is calculated and is controlled the output of the unsteady flow blocks current, and recovers normal in line voltage Afterwards, brushless double feed wind-power electricity generation is controlled by controling winding and exits low voltage crossing state.
2. phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device according to claim 1, its feature exist In, the transformer II and to become and contactor K2 is provided between flow module.
3. wire type rotor brushless double feed wind-driven generator low voltage ride through device according to claim 1, it is characterised in that Contactor K1 is provided between the power winding and transformer I.
4. wire type rotor brushless double feed wind-driven generator low voltage ride through device according to claim 1, it is characterised in that The signal acquisition module includes voltage acquisition module and current acquisition module.
5. wire type rotor brushless double feed wind-driven generator low voltage ride through device according to claim 1, it is characterised in that The wind energy conversion system connects the brushless dual-feedback wind power generator by gear-box.
6. wire type rotor brushless double feed wind-driven generator low voltage ride through device according to claim 1, it is characterised in that The control module is connected with communication module.
7. wire type rotor brushless double feed wind-driven generator low voltage ride through device according to claim 1, it is characterised in that The control module is connected with man-machine interface.
8. wire type rotor brushless double feed wind-driven generator low voltage ride through device according to claim 4, it is characterised in that The current collection circuit includes filter circuit and change-over circuit.
9. wire type rotor brushless double feed wind-driven generator low voltage ride through device according to claim 4, it is characterised in that The voltage collection circuit includes filter circuit and change-over circuit.
CN201621028720.XU 2016-08-31 2016-08-31 Double -fed aerogenerator low voltage ride through device that phase -wound rotor is brushless Expired - Fee Related CN206041516U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621028720.XU CN206041516U (en) 2016-08-31 2016-08-31 Double -fed aerogenerator low voltage ride through device that phase -wound rotor is brushless

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621028720.XU CN206041516U (en) 2016-08-31 2016-08-31 Double -fed aerogenerator low voltage ride through device that phase -wound rotor is brushless

Publications (1)

Publication Number Publication Date
CN206041516U true CN206041516U (en) 2017-03-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
CN (1) CN206041516U (en)

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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: 20170322

Termination date: 20180831