CN104113265B - The redundancy-type four-quadrant brushless dual-feed motor governing system that can take over seamlessly - Google Patents
The redundancy-type four-quadrant brushless dual-feed motor governing system that can take over seamlessly Download PDFInfo
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Abstract
The redundancy-type four-quadrant brushless dual-feed motor governing system taken over seamlessly that the present invention provides, mechanical load, dual stage back-to-back type structure PWM converter plant and the current-variable controller thereof including the brushless dual-feed motor being connected with AC network and being connected with this brushless dual-feed motor rotating shaft, and double set current detection module, DC voltage detection module and network voltage detection module, also include master controller human-computer interaction interface.The redundancy-type four-quadrant brushless dual-feed motor governing system that the present invention can take over seamlessly provides the benefit that: current transformer current sharing scheme can be assigned by PORT COM by master controller human-computer interaction interface and also can be solved through consultation by between current transformer, and dynamic realtime forms the back-to-back type PWM converter plant of redundancy structure；In device, the given value of current value of each current transformer dynamically can be distributed according to the duty of each current transformer, failure condition and service requirements, it is achieved taking over seamlessly and highly reliable operation between different running statuses.
Description
Technical field
The present invention relates to brushless dual-feed motor governing system, particularly to a kind of redundancy-type four-quadrant taken over seamlessly without
Brush double-fed motor speed adjusting system.
Background technology
Brushless dual-feed motor have speed governing flexibly, can four quadrant running and the advantage such as power inverter capacity is relatively low, and
There is not the maintenance issues of brush and slip ring, have broad application prospects.Brushless dual-feed motor governing system forward mesohigh
Large Copacity direction is developed, and sudden shutdown once occurs, will cause huge economic loss.At present, brushless dual-feed motor speed governing
The weakest part of system is the reliability of back-to-back PWM converter, and once in current transformer, a certain power device breaks down,
Necessarily there is sudden shutdown in system, the high reliability being difficulty with governing system is run.
Summary of the invention
In place of it is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of redundancy-type four-quadrant taken over seamlessly
Limit brushless dual-feed motor governing system, has the back-to-back type PWM converter plant of redundancy structure by employing and controls accordingly
The most uninterrupted fortune of system, it is achieved brushless dual-feed motor governing system, particularly mesohigh brushless dual-feed motor governing system
OK.
For reaching above-mentioned purpose, the redundancy-type four-quadrant brushless dual-feed motor governing system that the present invention can take over seamlessly, bag
Include the brushless dual-feed motor being connected with AC network and the mechanical load being connected with this brushless dual-feed motor rotating shaft, PWM unsteady flow dress
Put and current-variable controller, and current detection module, DC voltage detection module and network voltage detection module, PWM unsteady flow
Device and current-variable controller thereof are respectively dual stage back-to-back type structure, current detection module, DC voltage detection module and electrical network
Voltage detection module is respectively double set, also includes master controller, wherein:
The exchange end of motor side the first current transformer through the first current detection module be connected to the control of brushless dual-feed motor around
Group, the exchange end of motor side the second current transformer is connected to the control winding of brushless dual-feed motor, electricity through the second current detection module
The DC terminal of pusher side the first current transformer and the DC terminal of motor side the second current transformer are connected to respective dc bus；Grid side
The exchange end of one current transformer is connected to common frequency power network through the 3rd current detection module, and the exchange end of grid side the second current transformer is through
Four current detection modules are connected to common frequency power network, the DC terminal of grid side the first current transformer and the direct current of grid side the second current transformer
End is connected to respective dc bus；
First current detection module is connected with motor side the first current-variable controller, the second current detection module and motor side the
Two current-variable controllers are connected, and the 3rd current detection module is connected with grid side the first current-variable controller, the 4th current detection module
It is connected with grid side the second current-variable controller；
First DC voltage detection module is respectively connected with motor side the first current transformer and grid side the first current transformer, and second
DC voltage detection module is respectively connected with motor side the second current transformer and grid side the second current transformer, the first network voltage detection
Module is respectively connected with motor side the first current transformer and grid side the first current transformer, the second network voltage detection module and motor side
Second current transformer and grid side the second current transformer are respectively connected with；
Motor side the first current-variable controller, motor side the second current-variable controller, grid side the first current-variable controller and electrical network
Side the second current-variable controller is respectively connected with master controller, and master controller arranges each current transformer current sharing scheme, and by each
Current-variable controller controls back-to-back type PWM converter plant and runs in the ratio of described current sharing scheme.
The redundancy-type four-quadrant brushless dual-feed motor governing system that can take over seamlessly, wherein said motor side the first current transformer
The DC terminal of 11 and the DC terminal of motor side the second current transformer are connected to same dc bus；Grid side the first current transformer 21 straight
The DC terminal of stream end and grid side the second current transformer is connected to same dc bus.
The redundancy-type four-quadrant brushless dual-feed motor governing system that can take over seamlessly, wherein said master controller passes through communication
Port command current transformer current sharing scheme, dynamic realtime forms motor side the first current transformer, motor side the second current transformer, electrical network
Side the first current transformer and the given value of current value of grid side the second current transformer, each current-variable controller receives described given value of current value and controls
The four quadrant running of each current transformer.
The redundancy-type four-quadrant brushless dual-feed motor governing system that can take over seamlessly, wherein said main controller controls is respectively
In current transformer during out of phase brachium pontis fault, corresponding current-variable controller instructs the brachium pontis combination shape that do not breaks down of described current transformer
Become a complete 3-phase power converter, it is achieved the redundancy running of brushless dual-feed motor governing system.
The redundancy-type four-quadrant brushless dual-feed motor governing system that can take over seamlessly, wherein said main controller controls is in office
When motor side current transformer fault described in one or arbitrary grid side current transformer fault, corresponding current-variable controller instruction fault current transformer
Out of service, it is achieved the switching undisturbed of brushless dual-feed motor governing system.
Advantage and the good effect of the redundancy-type four-quadrant brushless dual-feed motor governing system that the present invention can take over seamlessly be:
By having converter structure and the control system of redundancy structure, it is achieved that four-quadrant brushless dual-feed motor governing system is in difference
Taking over seamlessly and highly reliable operation between running status.
For making the purpose of the present invention, technical scheme and effect clearer, clear and definite, referring to the drawings the present invention is entered one
Step describes in detail.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the redundancy-type four-quadrant brushless dual-feed motor governing system that the present invention can take over seamlessly.
Detailed description of the invention
The present invention provides a kind of redundancy-type four-quadrant brushless dual-feed motor governing system taken over seamlessly, and is had by design
There are the back-to-back type PWM converter plant of redundancy structure, dynamic current allocative decision and current transformer brachium pontis Reconstruction Mechanism, it is achieved four-quadrant
The high reliability of limit brushless dual-feed motor governing system is run.
With reference to Fig. 1, the present invention provides a kind of redundancy-type four-quadrant brushless dual-feed motor governing system taken over seamlessly, bag
Include the brushless dual-feed motor being connected with AC network and the mechanical load being connected with this brushless dual-feed motor rotating shaft, PWM unsteady flow dress
Put and current-variable controller, and current detection module, DC voltage detection module and network voltage detection module.PWM unsteady flow
Device and current-variable controller thereof are respectively dual stage back-to-back type structure, current detection module, DC voltage detection module and electrical network
Voltage detection module is respectively double set, also includes a master controller.Wherein:
The exchange end of motor side the first current transformer 11 is connected to the control of brushless dual-feed motor through the first current detection module 1
Winding, the exchange end of motor side the second current transformer 12 through the second current detection module 2 be connected to the control of brushless dual-feed motor around
It is female that group, the DC terminal of motor side the first current transformer 11 and the DC terminal of motor side the second current transformer 12 are connected to respective direct current
Line；The exchange end of grid side the first current transformer 21 is connected to common frequency power network, grid side the second unsteady flow through the 3rd current detection module 3
The exchange end of device 22 is connected to common frequency power network, the DC terminal of grid side the first current transformer 21 and electricity through the 4th current detection module 4
The DC terminal of net side the second current transformer 22 is connected to respective dc bus.
In the redundancy-type four-quadrant brushless dual-feed motor governing system further embodiment that the present invention can take over seamlessly, electricity
The DC terminal of pusher side the first current transformer 11 and the DC terminal of motor side the second current transformer 12 are connected to same dc bus；Grid side
The DC terminal of the first current transformer 21 and the DC terminal of grid side the second current transformer 22 are connected to same dc bus.
First current detection module 1 is connected with motor side the first current-variable controller 101, the second current detection module 2 and electricity
Pusher side the second current-variable controller 102 is connected, and the 3rd current detection module 3 is connected with grid side the first current-variable controller 201, and the 4th
Current detection module 4 is connected with grid side the second current-variable controller 202.
Inverter controller uses the vector control method of rotor flux linkage orientation to control motor side the first current transformer 11 and electricity
Pusher side the second current transformer 12, uses the vector control method of grid voltage orientation to control grid side the first current transformer 21 and grid side
Second current transformer 22.
First DC voltage detection module 111 and motor side the first current transformer 101 and grid side the first current transformer 201 difference
It is connected, the second DC voltage detection module 112 and motor side the second current transformer 102 and grid side the second current transformer 202 phase respectively
Even, the first network voltage detection module 211 is respectively connected with motor side the first current transformer 101 and grid side the first current transformer 201,
Second network voltage detection module 212 is respectively connected with motor side the second current transformer 102 and grid side the second current transformer 202.
Motor side the first current-variable controller 101, motor side the second current-variable controller 102, grid side the first current-variable controller
201 and grid side the second current-variable controller 202 be respectively connected with master controller, realized by fieldbus or other communication modes
Each current-variable controller and the two-way interconnection of master controller.
Master controller arranges each current transformer current sharing scheme, and controls the change of back-to-back type PWM by each current-variable controller
Stream device is run in the ratio of this current sharing scheme.Each current-variable controller receives given value of current value and controls the four of each current transformer
Quadrant runs.
When whole current transformers can properly functioning time, master controller is according to the duty reasonable distribution motor of power device
Side the first current transformer 11, the current ratio of motor side the second current transformer 12, or make the most a set of operation, a set of standby；System can
Duty reasonable distribution grid side the first current transformer 21 according to power device, the current ratio of grid side the second current transformer 22
Example, or make the most a set of operation, a set of standby.
The work disabling a certain current transformer by force can be assigned, with satisfied maintenance and dimension by master controller human-computer interaction interface
The needs protected.
The specific works process of the embodiment of the present invention is described in further detail below.
On the basis of existing brushless dual-feed motor governing system, formed according to Fig. 1 connected mode and there is redundancy structure
Back-to-back type PWM converter plant.
The two-way of current-variable controller and master controller human-computer interaction interface is realized by fieldbus or other communication modes
Interconnection.
By placing temperature sensor on the temperature sensitive point of each current transformer, man-machine with master controller by communication interconnection
Interactive interface realizes communication, thus the temperature rise data of each current transformer are sent into master controller human-computer interaction interface.
Master controller human-computer interaction interface is according to the deviation of DC bus-bar voltage set-point Yu value of feedback, passing ratio integration
Control to produce the total current reference value of two grid side current transformers.Then, master controller human-computer interaction interface is according to grid side
One current transformer 21 internal temperature rise Δ TNet side 1With grid side the second current transformer 22 internal temperature rise Δ TNet side 2, according toThe most dynamically meter
Calculate grid side the first current transformer 21 and the given value of current value of grid side the second current transformer 22
Master controller human-computer interaction interface is according to the deviation of brushless dual-feed motor rotary speed setting value Yu value of feedback, passing ratio
Integration control produces motor side the first current transformer 11, the total current reference value of motor side the second current transformer 12.Then, master controller
Human-computer interaction interface is according to motor side the first current transformer 11 internal temperature rise Δ TPusher side 1With motor side the second current transformer 12 internal temperature rise
ΔTPusher side 2, according toWith
Dynamic calculation motor side the first current transformer 11 and the given value of current value of motor side the second current transformer 12 respectivelyWith
Two grid side current-variable controllers all use line voltage vector oriented control method, respectively according to master controller people
The given value of current value that machine interactive interface is assignedWithForming respective d shaft current reference value, q shaft current reference value is equal
It is set to 0.Then, two grid side current-variable controllers according to the deviation of respective d, q shaft current reference value Yu value of feedback, by than
Example integration control produces d, q axle needed for grid side current transformer and controls voltage, and this control voltage is formed by SVPWM method
The driving signal of each switching tube of grid side current transformer.
Two motor side current-variable controllers all use power winding flux linkage vector directional controlling method, respectively according to main control
The given value of current value that device human-computer interaction interface is assignedWithForm respective q shaft current reference value, d shaft current reference
Value is disposed as 0.Then, motor side current-variable controller 1, motor side current-variable controller 2 according to respective d, q shaft current reference value with
The deviation of value of feedback, passing ratio integration control produces d, q axle needed for motor side current transformer and controls voltage, and this control voltage leads to
Cross SVPWM method and form the driving signal of each switching tube of motor side current transformer.
When a certain motor side current transformer fault being detected, system is immediately by out of service for fault current transformer, with season
The given value of current value of another motor side current transformer is iPusher side total current, it is achieved the switching undisturbed of motor side current transformer；When detecting
During a certain grid side current transformer fault, system is immediately by out of service for fault current transformer, with another grid side unsteady flow in season
The given value of current value of device is iNet side total current, it is achieved the switching undisturbed of grid side current transformer.
When out of phase brachium pontis fault in grid side the first current transformer 21 and grid side the second current transformer 22, system makes two
The brachium pontis combination do not broken down in individual current transformer, forms a complete 3-phase power converter.Assume grid side the first current transformer
The B phase brachium pontis fault of 21, the C phase brachium pontis fault of grid side the second current transformer 22, system is by A, C of grid side the first current transformer 21
Phase brachium pontis forms a complete three-phase full-bridge inverting circuit with the B phase brachium pontis of grid side the second current transformer 22, thus realizes electricity
The reconstruct of net side converter, it is ensured that the uninterrupted operation of grid side current transformer.
When out of phase brachium pontis fault in motor side the first current transformer 11 and motor side the second current transformer 12, system makes two
The brachium pontis combination do not broken down in individual current transformer, forms a complete 3-phase power converter.Assume motor side the first current transformer
The A phase brachium pontis fault of 11, the B phase brachium pontis fault of motor side the second current transformer 12, system is by B, C of motor side the first current transformer 11
Phase brachium pontis forms a complete three-phase full-bridge inverting circuit with the A phase brachium pontis of motor side the second current transformer 12, thus realizes electricity
The reconstruct of pusher side current transformer, it is ensured that the uninterrupted operation of motor side current transformer.
Embodiment described above is only to be described the preferred embodiment of the present invention, the not structure to the present invention
Thinking and scope is defined, without departing under design premise of the present invention, in this area, ordinary skill technical staff is to this
Various modification that bright technical scheme is made and improvement, all should fall into protection scope of the present invention, the skill that the present invention is claimed
Art content, all records in detail in the claims.
Claims (5)
1. the redundancy-type four-quadrant brushless dual-feed motor governing system that can take over seamlessly, including the nothing being connected with AC network
Brush double feedback electric engine and the mechanical load, PWM converter plant and the current-variable controller thereof that are connected with this brushless dual-feed motor rotating shaft, and
Current detection module, DC voltage detection module and network voltage detection module, it is characterised in that: described PWM converter plant and
Its current-variable controller is respectively dual stage back-to-back type structure, described current detection module, DC voltage detection module and electrical network electricity
Pressure detection module is respectively double set, also includes master controller, wherein:
The exchange end of motor side the first current transformer (11) is connected to the control of brushless dual-feed motor through the first current detection module (1)
Winding, the exchange end of motor side the second current transformer (12) is connected to the control of brushless dual-feed motor through the second current detection module (2)
Winding processed, the DC terminal of described motor side the first current transformer (11) and the DC terminal of motor side the second current transformer (12) are connected to respectively
From dc bus；The exchange end of grid side the first current transformer (21) is connected to common frequency power network through the 3rd current detection module (3),
The exchange end of grid side the second current transformer (22) is connected to common frequency power network through the 4th current detection module (4), described grid side
The DC terminal of one current transformer (21) and the DC terminal of grid side the second current transformer (22) are connected to respective dc bus；
Described first current detection module (1) is connected with motor side the first current-variable controller (101), described second current detecting mould
Block (2) is connected with motor side the second current-variable controller (102), described 3rd current detection module (3) and described grid side first
Current-variable controller (201) is connected, and described 4th current detection module (4) is connected with grid side the second current-variable controller (202)；
First DC voltage detection module (111) and described motor side the first current-variable controller (101) and grid side the first unsteady flow
Controller (201) is respectively connected with, the second DC voltage detection module (112) and described motor side the second current-variable controller (102)
It is respectively connected with grid side the second current-variable controller (202), the first network voltage detection module (211) and described motor side first
Current-variable controller (101) and grid side the first current-variable controller (201) are respectively connected with, the second network voltage detection module (212)
It is respectively connected with described motor side the second current-variable controller (102) and grid side the second current-variable controller (202)；
Described motor side the first current-variable controller (101), motor side the second current-variable controller (102), grid side the first unsteady flow control
Device processed (201) and grid side the second current-variable controller (202) are respectively connected with described master controller, and described master controller is arranged respectively
Current transformer current sharing scheme, and control back-to-back type PWM converter plant by described electric current distribution side by each current-variable controller
The ratio of case is run；
Wherein, master controller human-computer interaction interface is according to grid side the first current transformer (21) internal temperature rise Δ TNet side 1With grid side
Two current transformers (22) internal temperature rise Δ TNet side 2, according toWithDynamic calculation grid side the first current transformer (21) and electrical network respectively
The given value of current value of side the second current transformer (22)WithWherein, iNet side total currentGive for grid side the first current transformer (21) electric current
Definite valueWith grid side the second current transformer (22) given value of current valueSum；Master controller human-computer interaction interface is according to motor
Side the first current transformer (11) internal temperature rise Δ TPusher side 1With motor side the second current transformer (12) internal temperature rise Δ TPusher side 2, according toWithRespectively
Dynamic calculation motor side the first current transformer (11) and the given value of current value of motor side the second current transformer (12)WithWherein,
iPusher side total currentFor motor side the first current transformer (11) given value of current valueWith motor side the second current transformer (12) given value of current value
Sum.
The redundancy-type four-quadrant brushless dual-feed motor governing system taken over seamlessly the most according to claim 1, its feature
It is: the DC terminal of wherein said motor side the first current transformer (11) and the DC terminal of motor side the second current transformer (12) are connected to
Same dc bus；The DC terminal of described grid side the first current transformer (21) and the DC terminal of grid side the second current transformer (22) are even
Receive same dc bus.
The redundancy-type four-quadrant brushless dual-feed motor governing system taken over seamlessly the most according to claim 1 and 2, it is special
Levying and be: wherein said master controller sends the instruction of each current transformer electric current distribution by PORT COM, dynamic realtime forms institute
State motor side the first current transformer (11), motor side the second current transformer (12), grid side the first current transformer (21) and grid side second
The given value of current value of current transformer (22), each current-variable controller receives described given value of current value and controls the four-quadrant fortune of each current transformer
OK.
The redundancy-type four-quadrant brushless dual-feed motor governing system taken over seamlessly the most according to claim 1 and 2, it is special
Levying and be: wherein in each current transformer during out of phase brachium pontis fault, the corresponding current-variable controller of described main controller controls makes change
The brachium pontis combination of not breaking down of stream device forms a complete 3-phase power converter, it is achieved brushless dual-feed motor governing system superfluous
Remaining operation.
The redundancy-type four-quadrant brushless dual-feed motor governing system taken over seamlessly the most according to claim 1 and 2, it is special
Levy and be: wherein when arbitrary motor side current transformer fault or arbitrary grid side current transformer fault, described main controller controls phase
Current-variable controller is answered to make fault current transformer out of service, it is achieved the switching undisturbed of brushless dual-feed motor governing system.
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| CN201410382239.XA CN104113265B (en) | 2014-08-06 | 2014-08-06 | The redundancy-type four-quadrant brushless dual-feed motor governing system that can take over seamlessly |
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| CN201410382239.XA CN104113265B (en) | 2014-08-06 | 2014-08-06 | The redundancy-type four-quadrant brushless dual-feed motor governing system that can take over seamlessly |
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| CN105322840B (en) * | 2015-11-19 | 2018-04-17 | 广东上水能源科技有限公司 | Can flexible operation redundancy-type brushless dual-feed motor governing system |
| CN106899242B (en) * | 2017-04-28 | 2023-11-10 | 广东上水能源科技有限公司 | Brushless doubly-fed motor starting control device and method |
| CN112260254B (en) * | 2020-11-03 | 2022-09-09 | 中国科学院电工研究所 | Fault current controller and control method |
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| WO2004040748A1 (en) * | 2002-11-01 | 2004-05-13 | Vestas Wind Systems A/S | Circuit arrangement for use in a variable speed wind turbine system comprising a double-fed induction generator and a back-to-back converter |
| CN101123352B (en) * | 2007-08-30 | 2010-09-29 | 中国科学院电工研究所 | Rear change converter of wind power generation system and its loop current control method |
| CN101826804B (en) * | 2010-05-21 | 2012-06-20 | 哈尔滨工业大学 | Control method of parallel-type permanent magnet direct-drive wind power converter in wind driven generation system |
| CN103312187B (en) * | 2012-03-09 | 2016-02-03 | 台达电子工业股份有限公司 | A kind of converter system |
| CN102904419B (en) * | 2012-09-25 | 2015-04-22 | 上海交通大学 | Three-phase PWM (Pulse-Width Modulation) wave FPGA (Field Programmable Gate Array) generating device |
| CN103647499A (en) * | 2013-12-27 | 2014-03-19 | 广东上水能源科技有限公司 | All-quadrant frequency conversion speed regulation system and method for composite-rotor brushless doubly-fed alternating current motor |
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