CN108880363A - Three-level formula brushless synchronous machine asynchronous starting control method and system - Google Patents
Three-level formula brushless synchronous machine asynchronous starting control method and system Download PDFInfo
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- CN108880363A CN108880363A CN201810551340.1A CN201810551340A CN108880363A CN 108880363 A CN108880363 A CN 108880363A CN 201810551340 A CN201810551340 A CN 201810551340A CN 108880363 A CN108880363 A CN 108880363A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/08—Control of generator circuit during starting or stopping of driving means, e.g. for initiating excitation
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Abstract
The invention discloses a kind of three-level formula brushless synchronous machine asynchronous starting control method and systems, the control method is passed through three-phase alternating current to main generator threephase armature winding by starter controller in the starting-generating system start, starting exciting current is not provided, it only relies on the induction torque generated due to Damper Winding and realizes start-up function, starter controller is powered by starting power unit.The system start stage is passed through alternating current to main generator armature winding, due to the Damper Winding on main motor rotor, will generate induction torque, and the start-up function of system is realized by induction torque.Such method for starting-controlling only needs a set of three-phase inverter that start-up function can be realized, and simplifies method for starting-controlling, reduces the complexity of whole system.
Description
Technical field
The present invention relates to of aviation starting-generating system more particularly to a kind of three-level formula brushless synchronous starting-generating system
Flowing mode belongs to aero dynamo technical field.
Background technique
Aircraft AC electrical power generating systems mostly use three-level formula brushless synchronous machine as generator, the starting of engine at present
It is then to be started by DC starter, air turbine starter or gas turbine starter etc..But such starting system body
Product weight is big, reliability is low.A kind of starting of simple possible/generating integrated realizing method is on the basis of existing power supply system
On, dedicated starter is directly saved, according to the reversibility pricinple of motor, three-level formula no-brush synchronous generator is operated in electronic
State starts engine.
However, when starter electric operation of the three-level formula brushless synchronous machine as engine, there are following problems：Motor
When static, according to DC excitation, armature of exciter conveys exciting power without normal direction main motor excitation winding；Motor slow-speed of revolution fortune
When row, DC excitation can be used to provide excitation for main motor at this time, but exciting power is unable to satisfy start request.
In view of the above-mentioned problems, patent US7687928 discloses a kind of three-level formula brushless synchronous machine excitation structure and control
Method additionally increases a set of three-phase AC excitation winding, three-phase AC excitation winding in starting process in the stator side of exciter
It works, DC excitation winding work in power generation process.The main motor exciting current that three-phase AC excitation scheme is capable of providing is larger,
The output torque of main motor is larger, and required inverter capacity is smaller.But this scheme have the shortcomings that it is obvious, that is, need to change master encourage
The structure of magnetomechanical, the structure including iron core and winding, this meeting so that structure originally just very complicated three-level formula synchronous motor more
It is complicated.Patent US7821145 discloses a kind of individual three-phase AC excitation winding of use and realizes that AC and DC excitation is difunctional,
Three-phase AC excitation is used at the initial stage of starting, the later period is started and three-phase windings is connected by power generating stage by control contactor
A set of winding realizes DC excitation mode.The method increase the utilization rate of excitation winding, but three-phase AC excitation control with
The coordinated control of single-pole double-throw switch (SPDT) increases the complexity of AC and DC excitation switching.Patent US6906479 discloses one kind and adopts
The single phase ac excitation mode of excitation winding is covered with coiling in each stator poles of exciter more, it is optimal in order to obtain starter-generator
Performance：When power generation, excitation winding is cascaded by controller；And when starting, then it is connected in parallel, to reduce resistance
It is anti-, it reduces and starts alternating voltage amplitude, mitigate size, weight of inverter etc., and smaller to the change of original exciter, but rise
Dynamic power generation switching control is complicated, and contactor is more, and reliability is low, when motor is static and the slow-speed of revolution, single phase ac excitation efficiency compared with
It is low.Patent CN103532454B discloses the control method during a kind of two-phase brushless exciter structure and starting-generating,
It is the brushless exciter of the two-phase symmetric winding of 90 ° of electrical angles of space parallax that exciter, which uses excitation winding, using 4 contact relays
Exciter two-phase excitation winding is connected with two-phase inverter and generator control unit respectively.The program is encouraged compared to single phase ac
Magnetic, excitation efficiency is higher, but winding connection is complicated, and additional inverter is needed to provide two-phase symmetric power.Patent
CN102420560 discloses a kind of frequency-changing AC starting-generating system excitation structure and AC and DC excitation control method, will exchange
Energized stator three-phase windings are set as open ended structure, and one group of three-phase full bridge converters is respectively arranged at winding both ends, start rank
Section realizes three-phase AC excitation by two sets of converters of control, and power generating stage switches convertor controls strategy, to every phase winding list
Solely control, it is equivalent at DC series structure, using DC excitation.The program is arranged two groups of power inverters and improves excitation winding
Utilization rate, but two groups of power inverters make excitation con-trol process relatively complicated, while increasing the complexity of system structure.
The three-level formula brushless synchronous machine asynchronous starting control method that there is now require start excitation con-trol, while in order to
Enough exciting currents under zero speed and the slow-speed of revolution are obtained, used starting excitation control method is all rather complicated, needs to adjust
Whole main exciter structure increases a large amount of power devices, and starting-generating handoff procedure is complicated.
Summary of the invention
In view of the above technical problems, the present invention is directed to simplify the starting control strategy of three-level formula brushless synchronous machine, cancel
Excitation is started, starter controller is simplified.
In order to achieve the above technical purposes, the technical scheme is that：
Three-level formula brushless synchronous machine 1 is realized and is started using the rotor Damper Winding bring induction torque of main generator 5
Function.Three-level formula brushless synchronous machine is by permanent magnetic auxiliary exciter 2,5 three-level group of main exciter 3, rotating rectifier 4 and main generator
At.In generator operation, permanent magnetic auxiliary exciter 2 provides exciting current for 3 stator excitation winding of main exciter, and main exciter 3 is
Revolving-armature type alternator provides excitation electricity by the rotating rectifier 4 connecting with armature winding for 5 excitation winding of main generator
Stream.In starting operation, the permanent magnetic auxiliary exciter 2 of traditional three-level formula brushless synchronous machine does not work, and starter controller 6 is encouraged to master
3 excitation winding of magnetomechanical is passed through alternating current, excites the magnetic field of alternation, so that 3 armature winding of main exciter is obtained induced potential, to be
Main generator 5 provides exciting current, and starter controller 6 is passed through three-phase alternating current to 5 armature winding of main generator to obtain torque.
The present invention is by being passed through three-phase alternating current to armature winding and generating asynchronous turn using the absolute damping winding on 5 rotor of main generator
Square realizes start-up function.Main exciter 3 and permanent magnetic auxiliary exciter 2 do not work in starting process, simplify starting control plan
Slightly, starter controller 6 is simplified.
Bring beneficial effect by adopting the above technical scheme：
The present invention realizes the start-up function of system, power generation using the induction torque of three-level formula brushless synchronous machine main generator
Operation is identical as tradition three-level formula synchronous initiation generator, and since motor does not rotate when starting operation, main generator can not be obtained
Exciting current, it is therefore desirable to which complicated starting control strategy, starting control are a key technologies of starter-generator.The present invention
In, all torques are provided by induction torque when electric motor starting is run, and main exciter and permanent magnetic auxiliary exciter do not work.This measure
Starting excitation con-trol is eliminated, simplifies and starts excitation strategy, starter controller only need to be passed through three to main generator armature winding
Phase alternating current simplifies starter controller, simplifies starting without providing AC excitation electric current to main exciter excitation winding
The structure of system.
Detailed description of the invention
Fig. 1 is the starting system block diagram of three-level formula brushless synchronous machine；
Fig. 2, Fig. 3, Fig. 4 are three-level formula brushless synchronous machine main generator rotor structure chart；
Fig. 5 is asynchronous starting stage main generator armature supply control strategy schematic diagram；
In figure, 1- three-level formula brushless synchronous machine, 2- permanent magnetic auxiliary exciter, 3- main exciter, 4- rotating rectifier, 5- master
Motor, 6- starter controller, 7- starting power unit, 8- auxiliary power unit, 9- rotary transformer, 10- current transformer,
11- voltage sensor；
5.1- rotor core, 5.2- excitation winding, 5.3- pressing plate, 5.4- amortisseur bar.
Specific embodiment
The present invention provides a kind of three-level formula brushless synchronous machine asynchronous starting control method and system, to make mesh of the invention
, thinking it is clearer, clear, referring to example, the present invention is described in more detail.It should be appreciated that described herein specific
Implement to be not intended to limit the present invention only to explain the present invention.
Fig. 1 is the three-level formula brushless synchronous machine starting system block diagram for auxiliary power unit 8.The starting system is by three
Part is constituted, respectively three-level formula brushless synchronous machine 1, starter controller 6 and starting power unit 7.In starting process, start
The power supply of input is converted to high voltage direct current by power cell 7, is inputted in starter controller 6.Starter controller 6 becomes according to rotation
Revolving speed, the location information of the offer of depressor 9, are passed through three-phase alternating current to the armature winding of three-level formula brushless synchronous machine main motor 5,
Current transformer 10 and voltage sensor 11 are responsible for return current and voltage signal.The conjunction for the three-phase current that main generator 5 is passed through
It is faster than rotor speed at vector revolving speed, there are slip, rotor Damper Winding will be due to cutting magnetic induction for rotor and stator current vector
Line generates induced potential and induced current, to generate torque, auxiliary power unit 8 is driven to realize start-up function.Entirely rising
During dynamic, permanent magnetic auxiliary exciter 2, main exciter 3 and rotating rectifier 4 do not work.
Copper Damper Winding is installed, Damper Winding is logical on main generator (5) rotor of three-level formula brushless synchronous machine (1)
It crosses pressing plate or end ring is connected with each other, form absolute damping winding.Absolute damping winding is similar to the squirrel-cage bar of squirrel cage asynchronous motor, because
, when being passed through three-phase current in main generator (5) stator armature, Damper Winding will play squirrel-cage bar in squirrel cage asynchronous motor for this
Effect.Main generator (5) stator current vector rotation speed is faster than rotor, and there are revolutional slip, rotor Damper Windings with rotor
Induced potential will be generated due to the effect of cutting magnetic induction line, to generate induced current, generates induction torque.It is same that three-level formula is brushless
The main generator (5) for walking motor (1) generates operation logic of the principle similar to squirrel cage asynchronous motor of induction torque.
Fig. 2 to Fig. 4 is three-level formula brushless synchronous machine main generator rotor structure chart.Main generator rotor is mainly by rotor
Iron core 5.1, excitation winding 5.2, amortisseur bar 5.4 and pressing plate 5.3 form, additionally the structural members such as including sheath.5.4 He of amortisseur bar
5.3 material of pressing plate is copper, and amortisseur bar 5.4 is placed in the slot on rotor pole, and rotor pole axial ends is mounted on a block pressur plate
5.3, pressing plate 5.3 and 5.4 both ends of amortisseur bar are in close contact.Each amortisseur bar 5.4 is formed into a loop by pressing plate, forms Damper Winding.
Fig. 5 is the supply voltage schematic diagram varying with frequency when constant voltage and frequency ratio starts.It is risen using induction torque
When dynamic, changing supply frequency f1While change supply voltage U1, keeping the two ratio is a constant, i.e.,Wherein W1It is often connected in series the number of turns for armature winding, Kw1For armature winding winding coefficient, ΦmFor
Main flux, K are constant.
The inventive method is easy to realize, and the excitation in starting process is provided by electricity generating controller, can significantly simplify starting
Control strategy reduces starter controller volume, weight, while not impacting to the power generation performance of motor.
There are many this patent concrete application approach, and the foregoing is merely the preferred embodiments of this patent, are not intended to limit
The embodiment and protection scope of this patent are made under the premise of this patent principle to those skilled in the art
Change with replacement and obviously obtained scheme, should all be included in the protection scope of patent.
Claims (7)
1. three-level formula brushless synchronous machine asynchronous starting control method, it is characterised in that：The control method passes through at the start
Starter controller (6) is passed through three-phase alternating current to main generator (5) threephase armature winding, does not provide starting exciting current, only according to
The induction torque generated by Damper Winding realizes start-up function, and the starter controller (6) is powered by starting power unit (7).
2. three-level formula brushless synchronous machine asynchronous starting control method according to claim 1, which is characterized in that application pair
As for aircraft auxiliary power plant (8).
3. three-level formula brushless synchronous machine asynchronous starting control method three-level formula brushless synchronous machine according to claim 1
Asynchronous starting control method, which is characterized in that the control method is specially：
The power supply of input is converted to high voltage direct current and is input in starter controller (6) by starting power unit (7), starting control
The information that device (6) is provided according to rotary transformer (9) is passed through three to the armature winding of three-level formula brushless synchronous machine main motor (5)
Phase alternating current, current transformer (10) and voltage sensor (11) are responsible for return current and voltage signal；
The induction torque that three-level formula brushless synchronous machine (1) is generated by main generator (5) part, drives auxiliary power unit
(8) start-up function is realized, in starting process, permanent magnetic auxiliary exciter (2), main exciter (3) and rotating rectifier (4) not work
Make.
4. three-level formula brushless synchronous machine asynchronous starting control method according to claim 3, which is characterized in that main power generation
The three-phase alternating current being passed through in armature winding uses constant voltage constant frequency control.
5. three-level formula brushless synchronous machine asynchronous starting control method according to claim 4, which is characterized in that utilizing
When induction torque is started, changing supply frequency f1While change supply voltage U1, keeping the two ratio is a constant,
I.e.Wherein W1It is often connected in series the number of turns for armature winding, Kw1For armature winding winding coefficient, Φm
For main flux, K is constant.
6. three-level formula brushless synchronous machine asynchronous starting control system, which is characterized in that the three-level formula brushless synchronous starts system
System includes three-level formula brushless synchronous machine (1) and starter controller (6)；The three-level formula brushless synchronous machine (1) includes permanent magnetism
Pilot exciter (2), main exciter (3), rotating rectifier (4) and main generator (5) are pacified on the rotor of the main generator (5)
Equipped with absolute damping winding；
The rotor coaxial of the permanent magnetic auxiliary exciter (2), main exciter (3) and main generator (5) three is installed, the permanent magnetism pair
The three-phase alternating current output access electricity generating controller of exciter (2), the excitation winding of main exciter are controlled under generating state from power generation
Device processed obtains DC excitation electric current；The rotating rectifier (4) is mounted on main exciter (3) rotor, and the three of main exciter (3)
Mutually exchange output is converted to DC current by rotating rectifier (4), is supplied to main generator (5) excitation winding, thus based on
Generator (5) provides excitation；
The starter controller (6) three-phase alternating current output access main generator (5) stator armature winding, in starting process to
Main generator (5) stator armature winding provides three-phase alternating current.
7. three-level formula brushless synchronous machine asynchronous starting control system according to claim 6, which is characterized in that described three
The main generator (5) of grade formula brushless synchronous machine (1) includes rotor core, excitation winding, amortisseur bar, pressing plate or end ring, is gone back
Including jacket structure part；Wherein, rotor pole is equidistantly equipped in the rotor core, the excitation winding is wrapped in rotor pole
On；
The amortisseur bar is equipped with several, in rotor pole peripheral side, is arranged along rotor axial direction；
The amortisseur bar and laminate material are copper, and rotor axial both ends are mounted on a block pressur plate, and pressing plate and amortisseur bar both ends are tight
Contiguity touching；Each amortisseur bar is formed into a loop by pressing plate, forms Damper Winding.
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| CN201810551340.1A CN108880363A (en) | 2018-05-31 | 2018-05-31 | Three-level formula brushless synchronous machine asynchronous starting control method and system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713958A (en) * | 2018-11-29 | 2019-05-03 | 许昌学院 | Three-level formula started with no brush/generator three-phase AC excitation system and control method |
| CN109995035A (en) * | 2019-03-05 | 2019-07-09 | 上海电力学院 | A kind of rotary magnetic frequency tripler and starting control method |
| CN110912464A (en) * | 2019-12-07 | 2020-03-24 | 陕西航空电气有限责任公司 | Aircraft engine starting controller with active filtering function and starting/electric energy quality control system formed by aircraft engine starting controller |
| CN112018983A (en) * | 2020-09-05 | 2020-12-01 | 苏州讯如电子科技有限公司 | Permanent magnet auxiliary brushless alternating synchronous motor |
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| US6844707B1 (en) * | 2003-12-30 | 2005-01-18 | Pacific Scientific/Electro Kinetics Division | AC/DC brushless starter-generator |
| CN102882455A (en) * | 2012-09-17 | 2013-01-16 | 西北工业大学 | Excitation control method and device used in starting process of aeronautical tertiary brushless AC synchronous motor |
| CN103956949A (en) * | 2014-05-14 | 2014-07-30 | 西北工业大学 | Three-level type starting/electricity generator two-phase excitation constant slip AC starting model and control method thereof |
| CN104218858A (en) * | 2014-09-16 | 2014-12-17 | 西北工业大学 | Topological structure and device of three-stage brushless starting/generator three-phase alternating-current excitation system |
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2018
- 2018-05-31 CN CN201810551340.1A patent/CN108880363A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6844707B1 (en) * | 2003-12-30 | 2005-01-18 | Pacific Scientific/Electro Kinetics Division | AC/DC brushless starter-generator |
| CN102882455A (en) * | 2012-09-17 | 2013-01-16 | 西北工业大学 | Excitation control method and device used in starting process of aeronautical tertiary brushless AC synchronous motor |
| CN103956949A (en) * | 2014-05-14 | 2014-07-30 | 西北工业大学 | Three-level type starting/electricity generator two-phase excitation constant slip AC starting model and control method thereof |
| CN104218858A (en) * | 2014-09-16 | 2014-12-17 | 西北工业大学 | Topological structure and device of three-stage brushless starting/generator three-phase alternating-current excitation system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713958A (en) * | 2018-11-29 | 2019-05-03 | 许昌学院 | Three-level formula started with no brush/generator three-phase AC excitation system and control method |
| CN109995035A (en) * | 2019-03-05 | 2019-07-09 | 上海电力学院 | A kind of rotary magnetic frequency tripler and starting control method |
| CN110912464A (en) * | 2019-12-07 | 2020-03-24 | 陕西航空电气有限责任公司 | Aircraft engine starting controller with active filtering function and starting/electric energy quality control system formed by aircraft engine starting controller |
| CN112018983A (en) * | 2020-09-05 | 2020-12-01 | 苏州讯如电子科技有限公司 | Permanent magnet auxiliary brushless alternating synchronous motor |
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Application publication date: 20181123 |