CN106208149A - Phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device and method - Google Patents
Phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device and method Download PDFInfo
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- CN106208149A CN106208149A CN201610792851.3A CN201610792851A CN106208149A CN 106208149 A CN106208149 A CN 106208149A CN 201610792851 A CN201610792851 A CN 201610792851A CN 106208149 A CN106208149 A CN 106208149A
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- 238000004804 winding Methods 0.000 claims abstract description 46
- 239000003054 catalyst Substances 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 230000003044 adaptive effect Effects 0.000 claims description 17
- 230000008859 change Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 9
- 230000005284 excitation Effects 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 238000010248 power generation Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
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- 238000012545 processing Methods 0.000 abstract description 2
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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
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- 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 invention discloses a kind of phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device, including: signal acquisition module, for gathering the voltage and current signal of brushless double feed generator power winding, controlling the voltage and current signal of winding, power network signal, wind energy conversion system signal；Unsteady flow module, the control electric current needed for brushless double feed generator is exported；Control module, for receiving the signal of described signal acquisition module, carries out calculating and controlling the output of described unsteady flow blocks current according to the signal of described signal acquisition module；Catalyst K1, for the break-make of power winding Yu transformator I；Catalyst K2, for the break-make of low voltage ride through device Yu transformator II, present configuration is simple, and processing ease, volume is little, low cost, it is not necessary to increase extra nextport hardware component NextPort, it is possible to achieve highly reliable, high dynamic response.
Description
Technical field
The present invention relates to brushless double feed generator technical field, send out particularly to a kind of phase-wound rotor brushless double feed wind-force
Low-voltage of electric machine traversing device and method.
Background technology
Along with country's 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 of wind-force speed is changeable, it is possible to better meet the demand of variable speed constant frequency generator, researcher
Propose and have employed alternating current generator and the control method thereof of various version.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 has bigger fluctuation after causing wind power generation set grid-connection
Property and the unstability of output.Along 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 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 prominent is exactly, in the case of the Voltage Drop of electrical network, and wind-force
Generating set can accomplish that off-grid does not runs, the most usually said low voltage crossing (Low-voltage Ride
Through, LVRT) technology.
Brushless dual-feedback wind power generator is overlapped separate stator winding (power winding and control winding) and rotor by two
Composition, the mode using electric network source and variable-frequency power sources simultaneously to feed, utilize the regulation of reversible converter to control the power supply of winding in fact
The now control to motor.
The power winding of brushless dual-feedback wind power generator and control winding share a set of iron core, the most straight between double winding
The electromagnetic coupled connect.Electric machine structure eliminates brush and slip ring, simple in construction, sturdy and durable, with little need for safeguarding or
The minimal amount of maintenance of person.And, the power factor regulation of this type of motor possesses the plurality of advantages such as synchrodrive 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 for the most harsh satisfied wind-force
The grid-connected requirement of electricity, this type of brushless dual-feedback wind power generator is badly in need of advanced low voltage ride through device and method.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of simple in construction, and processing ease, volume is little, and low cost is not required to
Increase extra nextport hardware component NextPort, it is possible to achieve phase-wound rotor highly reliable, high dynamic response low voltage crossing technology is brushless
Double-fed wind power generator low voltage ride through device and method.
In order to solve above-mentioned technical problem, the technical scheme is that phase-wound rotor brushless dual-feedback wind power generator
Low voltage ride through device, it is characterised in that including:
Signal acquisition module, for gathering the voltage and current signal of brushless double feed generator power winding, controlling winding
Voltage and/or current signal, power network signal, wind energy conversion system signal；
Unsteady flow module, the control electric current needed for brushless double feed generator is exported；
Control module, for receiving the signal of described signal acquisition module, enters according to the signal of described signal acquisition module
Row calculates and controls the output of described unsteady flow blocks current, and after line voltage recovers normally, controls to send out by controlling winding
Group of motors exits low voltage crossing state；
Catalyst K1, for the break-make of power winding Yu transformator I；
Catalyst K2, for the break-make of unsteady flow module Yu transformator II.
Preferably, man machine interface and communication module, described man machine interface and described communication module and described control are also included
Module connects, and described man machine interface and described communication module are for receiving operational order and the operation feelings of feedback system of outside
Condition.
Preferably, described catalyst K1, the control loop of described catalyst K2 are connected with described control module, described control
Module is for controlling described catalyst K1, the break-make of described catalyst K2.
Preferably, described signal acquisition module includes current collection circuit and voltage collection circuit.
Preferably, described current collection circuit includes filter circuit and change-over circuit.
Preferably, described voltage collection circuit includes filter circuit and change-over circuit.
On the other hand, the present invention also provides for a kind of method using any of the above-described low voltage ride through device, including following
Step:
(1) brushless dual-feedback wind power generator group has been incorporated into the power networks；
(2) signal acquisition module detects line voltage in real time；
(3) detect that line voltage falls；
(4) brushless dual-feedback wind power generator group enters low voltage crossing state；
(5) control module is according to line voltage, current generated output, change propeller angle, performs vector adaptive algorithm；
(6) control module performs to protect restricted program simultaneously；
(7) control module is according to the calculated data of vector adaptive algorithm, performs output voltage control, output electric current
Control, pitch control；
(8) control module drives unsteady flow module to realize the output controlling winding；
(9) in whole low voltage crossing state procedure, above step is repeated, it is ensured that wind power generating set does not takes 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 normally, control module is according to the currently active power of generating, reactive power, wind energy turbine set
Under send instructions, continue control unit normal power generation run；
(12) brushless dual-feedback wind power generator group exits low voltage crossing state.
Preferably, described vector adaptive control algorithm comprises the following steps:
(1) according to generator parameter, wind energy conversion system signal, generator excitation is calculated；
(2) the power winding three-phase electric current that signal acquisition module obtains is transformed to biphase rotation by three-phase static coordinate system
Coordinate system, described biphase rotating coordinate system includes pM axle and pT axle, obtains power winding current component on pM axle and pT axle
ipM、ipT, ipMAnd ipTInitial value is acquiescence set-point；
(3) the control winding three-phase electric current that signal acquisition module obtains is transformed to biphase rotation by three-phase static coordinate system
Coordinate system, described biphase rotating coordinate system includes cM axle and cT axle, obtains controlling winding current component on cM axle and cT axle
icM、icT, icMAnd icTInitial value is acquiescence set-point；
(4) according to the running current upper limit of generator excitation and setting, given value of current value i controlling winding is calculated* cM、
i* cT；
(5) according to ipM、ipT、i* cM、i* cT, the three-phase voltage U controlling winding is calculated by decoupling self-adaptive algorithmcU、
UcV、UcW, and by driving unsteady flow module to make the three-phase voltage of control winding be UcU、UcV、UcW；
(6) controlled by the power in adaptive algorithm, adjust the active power of electromotor, reactive power output；
(7) instruct according to control module, repeat above-mentioned calculating.
Preferably, described control module monitors the service data of brushless dual-feedback wind power generator in real time, and changes in time
The electric current that brushless dual-feedback wind power generator is provided by described unsteady flow module.
Use what the technique scheme present invention obtained to have the beneficial effect that low voltage ride through device simple in construction, low cost,
Control method realizes easily, it is not necessary to increase extra nextport hardware component NextPort, safe and reliable to operation, it is possible to monitoring brushless double feed wind in real time
The running status of power generator, it is possible to realize high dynamic response control.And this control method controls brushless double feed wind-power electricity generation
When machine runs, noise is less, improves the life-span of brushless dual-feedback wind power generator.And this low voltage ride through device and method are fitted
Ying Xingqiang, it is possible to use the brushless dual-feedback wind power generator in various models.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used
To obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device of the present invention；
Fig. 2 is the FB(flow block) of phase-wound rotor brushless dual-feedback wind power generator low-voltage ride-through method of the present invention；
Fig. 3 is vector adaptive algorithm in phase-wound rotor brushless dual-feedback wind power generator low-voltage ride-through method of the present invention
Control flow chart.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described further.At this it should be noted that for
The explanation of these embodiments is adapted to assist in and understands the present invention, but is not intended that limitation of the invention.Additionally, it is disclosed below
As long as each embodiment of the present invention in involved technical characteristic do not constitute conflict each other and just can be mutually combined.
Fig. 1 is the structural representation of phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device, including contact
Device K1, for the break-make of power winding Yu transformator I, power winding side transformer I is for grid-connected boosting；Also include catalyst
K2, for the break-make of low voltage ride through device Yu transformator II, transformator II is for providing power supply to low voltage ride through device；Also
Including signal acquisition module, for gathering the voltage and current signal of brushless dual-feedback wind power generator power winding, controlling winding
Voltage and current signal, power network signal, wind energy conversion system signal；Also include unsteady flow module, for brushless dual-feedback wind power generator
Control electric current needed for output；Also include control module, for receiving the signal of described signal acquisition module, according to described signal
The signal of acquisition module carries out calculating and controlling the output of described unsteady flow blocks current；Also include man machine interface and communication module,
Described man machine interface and described communication module are connected with described control module, and described man machine interface and described communication module are used for connecing
Operational order outside Shouing and the ruuning situation of feedback system；Described 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.
Fig. 2 is the FB(flow block) of phase-wound rotor brushless dual-feedback wind power generator low-voltage ride-through method, including following step
Rapid:
(1) brushless dual-feedback wind power generator group has been incorporated into the power networks；
(2) signal acquisition module detects line voltage in real time；
(3) detect that line voltage falls；
(4) brushless dual-feedback wind power generator group enters low voltage crossing state；
(5) control module is according to line voltage, current generated output, change propeller angle, performs vector adaptive algorithm；
(6) control module performs to protect restricted program simultaneously；
(7) control module is according to the calculated data of vector adaptive algorithm, performs output voltage control, output electric current
Control, pitch control；
(8) control module drives unsteady flow module to realize the output controlling winding；
(9) in whole low voltage crossing state procedure, above step is repeated, it is ensured that wind power generating set does not takes 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 normally, control module is according to the currently active power of generating, reactive power, wind energy turbine set
Under send instructions, continue control unit normal power generation run；
(12) brushless dual-feedback wind power generator group exits low voltage crossing state.
Control module in this control method monitors the service data in brushless dual-feedback wind power generator running in real time,
And change the electric current that brushless dual-feedback wind power generator is provided by unsteady flow module 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 comprises the following steps:
(1) according to generator parameter, wind energy conversion system signal, generator excitation is calculated；
(2) the power winding three-phase electric current that signal acquisition module obtains is transformed to biphase rotation by three-phase static coordinate system
Coordinate system, described biphase rotating coordinate system includes pM axle and pT axle, obtains power winding current component on pM axle and pT axle
ipM、ipT, ipMAnd ipTInitial value is acquiescence set-point；
(3) the control winding three-phase electric current that signal acquisition module obtains is transformed to biphase rotation by three-phase static coordinate system
Coordinate system, described biphase rotating coordinate system includes cM axle and cT axle, obtains controlling winding current component on cM axle and cT axle
icM、icT, icMAnd icTInitial value is acquiescence set-point；
(4) according to the running current upper limit of generator excitation and setting, given value of current value i controlling winding is calculated* cM、
i* cT；
(5) according to ipM、ipT、i* cM、i* cT, the three-phase voltage U controlling winding is calculated by decoupling self-adaptive algorithmcU、
UcV、UcW, and by driving unsteady flow module to make the three-phase voltage of control winding be UcU、UcV、UcW；
(6) controlled by the power in adaptive algorithm, adjust the active power of electromotor, reactive power output；
(7) instruct according to control module, repeat above-mentioned calculating.
The low voltage ride through device simple in construction of the present invention, low cost, control method realizes easily, it is not necessary to increase extra
Nextport hardware component NextPort, safe and reliable to operation, it is possible to monitor in real time the running status of brushless dual-feedback wind power generator, it is possible to realize height dynamic
State response controls.And during the control brushless dual-feedback wind power generator operation of this control method, noise is less, improves brushless double feed
The life-span of wind-driven generator.And this low voltage ride through device and method applicability are strong, it is possible to use brushless in various models
Double-fed wind power generator.
Above in association with accompanying drawing, embodiments of the present invention are explained in detail, but the invention is not restricted to described enforcement
Mode.For a person skilled in the art, in the case of without departing from the principle of the invention and spirit, to these embodiments
Carry out multiple change, revise, replace and modification, still fall within protection scope of the present invention.
Claims (9)
1. phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device, it is characterised in that including:
Signal acquisition module, for gathering the voltage and current signal of brushless double feed generator power winding, controlling the electricity of winding
Pressure and/or current signal, power network signal, wind energy conversion system signal；
Unsteady flow module, the control electric current needed for brushless double feed generator is exported；
Control module, for receiving the signal of described signal acquisition module, counts according to the signal of described signal acquisition module
Calculate and control the output of described unsteady flow blocks current, and after line voltage recovers normally, control electromotor by controlling winding
Group exits low voltage crossing state；
Catalyst K1, for the break-make of power winding Yu transformator I；
Catalyst K2, for the break-make of unsteady flow module Yu transformator II.
Phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device the most according to claim 1, it is characterised in that:
Also include that man machine interface and communication module, described man machine interface and described communication module are connected with described control module, described people
Machine interface and described communication module are for receiving operational order and the ruuning situation of feedback system of outside.
Phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device the most according to claim 1, it is characterised in that:
Described catalyst K1, the control loop of described catalyst K2 are connected with described control module, and described control module is used for controlling institute
State catalyst K1, the break-make of described catalyst K2.
Phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device the most according to claim 1, it is characterised in that:
Described signal acquisition module includes current collection circuit and voltage collection circuit.
Phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device the most according to claim 4, it is characterised in that:
Described current collection circuit includes filter circuit and change-over circuit.
Phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device the most according to claim 4, it is characterised in that:
Described voltage collection circuit includes filter circuit and change-over circuit.
7. the method using any of the above-described claim low voltage ride through device, it is characterised in that comprise the following steps:
(1) brushless dual-feedback wind power generator group has been incorporated into the power networks；
(2) signal acquisition module detects line voltage in real time；
(3) detect that line voltage falls；
(4) brushless dual-feedback wind power generator group enters low voltage crossing state；
(5) control module is according to line voltage, current generated output, change propeller angle, performs vector adaptive algorithm；
(6) control module performs to protect restricted program simultaneously；
(7) control module is according to the calculated data of vector adaptive algorithm, performs output voltage control, output electric current control
System, pitch control；
(8) control module drives unsteady flow module to realize the output controlling winding；
(9) in whole low voltage crossing state procedure, above step is repeated, it is ensured that wind power generating set not off-grid, machine
Group fault-free；
(10) line voltage progressively recovers in normal processes, and control module is according to line voltage, current generated output, change vane angle
Send instructions under degree, wind energy turbine set, continue executing with vector adaptive algorithm；
(11), after line voltage recovers normally, control module issues according to the currently active power of generating, reactive power, wind energy turbine set
Instruction, continues to control unit normal power generation and runs；
(12) brushless dual-feedback wind power generator group exits low voltage crossing state.
Method the most according to claim 7, it is characterised in that described vector adaptive control algorithm comprises the following steps:
(1) according to generator parameter, wind energy conversion system signal, generator excitation is calculated；
(2) the power winding three-phase electric current that signal acquisition module obtains is transformed to two cordic phase rotators by three-phase static coordinate system
System, described biphase rotating coordinate system includes pM axle and pT axle, obtains power winding current component i on pM axle and pT axlepM、
ipT, ipMAnd ipTInitial value is acquiescence set-point；
(3) the control winding three-phase electric current that signal acquisition module obtains is transformed to two cordic phase rotators by three-phase static coordinate system
System, described biphase rotating coordinate system includes cM axle and cT axle, obtains controlling winding current component i on cM axle and cT axlecM、
icT, icMAnd icTInitial value is acquiescence set-point；
(4) according to the running current upper limit of generator excitation and setting, given value of current value i controlling winding is calculated* cM、i* cT；
(5) according to ipM、ipT、i* cM、i* cT, the three-phase voltage U controlling winding is calculated by decoupling self-adaptive algorithmcU、UcV、UcW,
And by driving unsteady flow module to make the three-phase voltage of control winding be UcU、UcV、UcW；
(6) controlled by the power in adaptive algorithm, adjust the active power of electromotor, reactive power output；
(7) instruct according to control module, repeat above-mentioned calculating.
Method the most according to claim 7, it is characterised in that: described control module monitors brushless double feed wind-power electricity generation in real time
The service data of machine, and change the electric current that brushless dual-feedback wind power generator is provided by described unsteady flow module in time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610792851.3A CN106208149A (en) | 2016-08-31 | 2016-08-31 | Phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device and method |
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|---|---|---|---|
| CN201610792851.3A CN106208149A (en) | 2016-08-31 | 2016-08-31 | Phase-wound rotor brushless dual-feedback wind power generator low voltage ride through device and method |
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| CN106208149A true CN106208149A (en) | 2016-12-07 |
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|---|---|---|---|---|
| CN101051778A (en) * | 2007-05-15 | 2007-10-10 | 天津市新源电气科技有限公司 | Winding type external rotor brushless double feed generator and its control device |
| GB2460723A (en) * | 2008-06-13 | 2009-12-16 | Ehsan Abdi Jalebi | Operating a brushless doubly fed machine (BDFM) |
| CN101944747A (en) * | 2010-09-15 | 2011-01-12 | 邵诗逸 | Low-voltage failure crossing method of brushless cascading double-fed wind power generator set |
| CN102102631A (en) * | 2011-03-22 | 2011-06-22 | 国电联合动力技术有限公司 | Running control method for wind generating set with gear box speed regulation front end |
| CN102868346A (en) * | 2012-08-16 | 2013-01-09 | 北京索德电气工业有限公司 | Brushless doubly-fed motor excitation control system and control method using same |
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-
2016
- 2016-08-31 CN CN201610792851.3A patent/CN106208149A/en active Pending
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| CN101051778A (en) * | 2007-05-15 | 2007-10-10 | 天津市新源电气科技有限公司 | Winding type external rotor brushless double feed generator and its control device |
| GB2460723A (en) * | 2008-06-13 | 2009-12-16 | Ehsan Abdi Jalebi | Operating a brushless doubly fed machine (BDFM) |
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| CN102102631A (en) * | 2011-03-22 | 2011-06-22 | 国电联合动力技术有限公司 | Running control method for wind generating set with gear box speed regulation front end |
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Application publication date: 20161207 |
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