CN109596936A - Aviation three-phase AC excitation system dual rotary diode open-circuit fault detection method - Google Patents
Aviation three-phase AC excitation system dual rotary diode open-circuit fault detection method Download PDFInfo
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- CN109596936A CN109596936A CN201811573187.9A CN201811573187A CN109596936A CN 109596936 A CN109596936 A CN 109596936A CN 201811573187 A CN201811573187 A CN 201811573187A CN 109596936 A CN109596936 A CN 109596936A
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Abstract
The invention discloses aviation three-phase AC excitation system dual rotary diode open-circuit fault detection methods, are related to aviation alternating current generator technical field.This method is to obtain exciter rotor three-phase windings electric current first, then the exciter rotor three-phase windings electric current of acquisition is filtered, obtain the fundamental wave, second harmonic and triple-frequency harmonics of rotor three-phase electric current, by monitoring fundamental wave, second harmonic and the triple-frequency harmonics amplitude situation of change of rotor three-phase electric current on-line, the open-circuit fault feature according to two rotating diodes of rotating rectifier realizes fault detection when breaking down.Not only data calculation amount is small for this method, rotating rectifier status information is obtained without carrying out model training and off-line simulation, two rotating diode open-circuit faults of rotating rectifier can also be detected static, electronic and generating state in three-level formula brushless synchronous machine.
Description
Technical field
The present invention relates to aviation alternating current generator technical fields, more particularly to aviation three-phase AC excitation system dual rotary two
Pole pipe open-circuit fault detection method and system.
Background technique
With the fast development of big aircraft technology, there is starting/generating integrated function wide variable-frequency power generation system of high pressure
It is an important development direction of the following aviation AC power supply system.Currently, China's aircraft AC electrical power generating systems mostly use three
For grade formula brushless synchronous machine as generator, such generator does not have the function of starting aero-engine, and engine needs special
The starting equipment of door.If being three intersections by the revolving-armature type DC excitation system conversion of original three-level formula brushless synchronous machine
Excitation system is flowed, while controlling three-level formula brushless synchronous machine and operating in motoring condition to complete the starting of engine, that is, is realized
Start/generating integrated, so that it may special starter is saved, airborne weight and system bulk are mitigated.In three-phase AC excitation
In system, rotating rectifier is responsible for as connection main motor and exciter core component by exciter rotor winding three-phase electricity
It is rectified into direct current and provides the task of exciting current for main motor.On the topology, rotating rectifier is usually to be revolved by six
Turn the three-phase bridge diode rectifier circuit of diode composition.Due to inevitably being rushed in excitation system operational process
It hits and after undergoing aging effect, open-circuit fault will occur for rotating diode, the fan-out capability of excitation system will reduce.
Especially when open-circuit fault occurs for two rotating diodes, excitation system fan-out capability will be significantly reduced, if excitation system
It not detecting and is out of order and changes Closed-loop Control Strategy, the exciting current in exciter stator winding can increased dramatically, entire starting/
Electricity generation system can not only collapse, but also can endanger entire onboard network system.
Currently, the rotating diode failure of traditional revolving-armature type DC excitation system can be by exciter stator
Side increase search coil, stator current is carried out Fourier analysis, main motor end voltage is carried out the methods of Fourier analysis into
Row.However, the topological structure of three-phase ac exciter and revolving-armature type exciter is entirely different:
1, revolving-armature type exciter is synchronous motor, and three-phase ac exciter is induction machine；
2, the stator winding of revolving-armature type exciter is a set of direct current winding, and three-phase ac exciter stator is three intersections
Flow winding；
3, main motor stator winding is connect in starting process with inverter, and stator winding end voltage is not easy to carry out in Fu
Leaf analysis.
Therefore, the existing fault detection method for revolving-armature type DC excitation system is not particularly suited for three-phase alternating current
Excitation system.
Mainly have for the method for detecting fault of rotating diode of three-phase AC excitation system:
1, using intelligent algorithm, this kind of algorithm needs mass data sample to be trained model；
2, using Euler's distance method, this method relies on the various states letter that a large amount of off-line simulations obtain rotating rectifier
Breath；
3, to exciter rotor three-phase current carry out frequency analysis, using current distortion rate between any two-phase residual error into
Row fault detection.
This method data are computationally intensive, and processing speed is to be improved.
Summary of the invention
It can not be applied to for the existing rotating rectifier faults monitoring method based on revolving-armature type DC excitation system
In three-phase AC excitation system, while existing three-phase AC excitation systems approach needs to carry out model training, relies on off-line simulation
And the problem that data are computationally intensive, the present invention provides the inspections of aviation three-phase AC excitation system dual rotary diode open-circuit failure
Survey method.
A kind of aviation three-phase AC excitation system dual rotary diode open-circuit fault detection method, which comprises
Obtain exciter rotor three-phase windings electric current；
The exciter rotor three-phase windings electric current of acquisition is filtered, the fundamental wave, secondary humorous of rotor three-phase electric current is obtained
Wave and triple-frequency harmonics；
By monitoring fundamental wave, second harmonic and the triple-frequency harmonics amplitude situation of change of rotor three-phase electric current, foundation on-line
The open-circuit fault feature of two rotating diodes of rotating rectifier realizes fault detection when breaking down.
Preferably, the current methods for obtaining exciter rotor three-phase windings are monitored online by filtering method.
Preferably, the discrimination of the fault signature is according to as follows:
When exciter rotor three-phase windings have a phase winding not detect that fundamental current ingredient, remaining two phase windings detect
Triple harmonic current ingredient, then two rotating diodes break down simultaneously on some bridge arm of rotating rectifier；
When exciter rotor three-phase windings detect second harmonic current ingredient, while three-phase windings do not detect three
Subharmonic current ingredient, then there are two upper bridge arm or the diode either open failures of two lower bridge arms for rotating rectifier；
When exciter rotor three-phase windings detect subharmonic current ingredient three times, while having in three-phase windings and only one
Phase winding detects second harmonic ingredient, then rotating rectifier has the diode in a upper bridge arm and another lower bridge arm
Open-circuit fault.
Aviation three-phase AC excitation system dual rotary diode open-circuit fault detection method of the present invention the utility model has the advantages that
1, this method data calculation amount is small, obtains rotating rectifier state letter without carrying out model training and off-line simulation
Breath.
2, this method can in three-level formula brushless synchronous machine two to rotating rectifier of static, electronic and generating state
Rotating diode open-circuit fault is detected.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is aviation three-phase AC excitation system dual rotary diode open-circuit fault detection side provided in an embodiment of the present invention
The step flow chart of method；
Fig. 2 is aviation three-phase AC excitation system construction drawing provided in an embodiment of the present invention；
Fig. 3 is rotating diode fault detection functional block diagram provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig.1, the aviation three-phase AC excitation system dual rotary diode open-circuit failure provided in the embodiment of the present invention
Detection method is a kind of by on-line monitoring exciter rotor current harmonics composition transfer situation, reaches satisfaction starting/power generation system
It unites and two rotating diode open-circuit faults is carried out with the novel detection method of on-line monitoring and fault identification demand, this method packet
It includes:
Step 100: obtaining exciter rotor three-phase windings electric current.
Step 200: the exciter rotor three-phase windings electric current of acquisition being filtered, the base of rotor three-phase electric current is obtained
Wave, second harmonic and triple-frequency harmonics.
As shown in Fig. 2, the method is described: respectively by the collected exciter stator two-phase of current sensor around
Group electric current (is assumed to be iAWith iB), the collected two phase windings phase voltage of voltage sensor (be assumed to be uAWith uB) and exciter
Rotor position information (being assumed to be θ) is sent in rotating diode Failure Detection Controller (hereinafter referred to as controller), and controller is first
Exciter rotor three-phase current (i is resolved first with exciter stator voltage equation and flux linkage equationsrA、irBWith irC), then to encouraging
Magnetomechanical rotor three-phase electric current is filtered (including bandpass filtering, bandreject filtering), and real-time online monitoring exciter rotor three-phase
Fundamental wave (the i of electric currentrAlst、irB1stWith irC1st), second harmonic (irA2nd、irB2ndWith irC2nd) and triple-frequency harmonics ( With) amplitude.
Step 300: fundamental wave, second harmonic and triple-frequency harmonics amplitude by monitoring rotor three-phase electric current on-line change feelings
Condition, the open-circuit fault feature according to two rotating diodes of rotating rectifier realize fault detection when breaking down.
As shown in figure 3, A, B, C in figure indicate a phase winding.When controller detects the humorous of electric current in three-phase windings
Wave component changes, and the discrimination of fault type is carried out according to fault signature.The discrimination foundation of fault signature when breaking down
It is as follows:
When exciter rotor three-phase windings have a phase winding not detect that fundamental current ingredient, remaining two phase windings detect
Triple harmonic current ingredient, then two rotating diodes break down (1 in such as figure simultaneously on some bridge arm of rotating rectifier
Number with No. 4 perhaps No. 3 with No. 6 or No. 5 with No. 2 occur open-circuit fault).
When exciter rotor three-phase windings detect second harmonic current ingredient, while three-phase windings do not detect three
Subharmonic current ingredient, then rotating rectifier there are two the diode either open failures of upper bridge arm or two lower bridge arms (such as
In figure No. 1 with No. 3 perhaps No. 1 with No. 5 perhaps No. 3 with No. 5 perhaps No. 4 with No. 6 perhaps No. 4 with No. 2 or No. 2 with No. 6
Open-circuit fault occurs).
When exciter rotor three-phase windings detect subharmonic current ingredient three times, while having in three-phase windings and only one
Phase winding detects second harmonic ingredient, then rotating rectifier has the diode in a upper bridge arm and another lower bridge arm
Open-circuit fault (in such as figure No. 1 with No. 6 perhaps No. 1 with No. 2 perhaps No. 3 with No. 4 perhaps No. 3 with No. 2 or No. 5 with No. 4,
Or No. 5 with No. 6 occur open-circuit fault).
After controller obtains fault type according to fault signature, controller issues fault alarm instruction, and fault detection is complete
Finish.
Disclosed above is only specific embodiments of the present invention, and still, the embodiment of the present invention is not limited to this, Ren Heben
What the technical staff in field can think variation should all fall into protection scope of the present invention.
Claims (2)
1. a kind of aviation three-phase AC excitation system dual rotary diode open-circuit fault detection method, which is characterized in that this method
Include:
Obtain exciter rotor three-phase windings electric current；
The exciter rotor three-phase windings electric current of acquisition is filtered, obtain fundamental wave, the second harmonic of rotor three-phase electric current with
And triple-frequency harmonics；
By monitoring fundamental wave, second harmonic and the triple-frequency harmonics amplitude situation of change of rotor three-phase electric current on-line, according to rotation
The open-circuit fault feature of two rotating diodes of rectifier realizes fault detection when breaking down.
2. the method as described in claim 1, which is characterized in that the discrimination of the fault signature is according to as follows:
When exciter rotor three-phase windings have a phase winding not detect that fundamental current ingredient, remaining two phase windings detect three times
Harmonic current component, then two rotating diodes break down simultaneously on some bridge arm of rotating rectifier；Or
When exciter rotor three-phase windings detect second harmonic current ingredient, at the same three-phase windings do not detect it is humorous three times
Wave current component, then there are two upper bridge arm or the diode either open failures of two lower bridge arms for rotating rectifier；Or
When exciter rotor three-phase windings detect subharmonic current ingredient three times, at the same have in three-phase windings and an only phase around
Group detects second harmonic ingredient, then rotating rectifier has the diode either open in a upper bridge arm and another lower bridge arm
Failure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811573187.9A CN109596936B (en) | 2018-12-21 | 2018-12-21 | Double-rotating diode open-circuit fault detection method for aviation three-phase alternating-current excitation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811573187.9A CN109596936B (en) | 2018-12-21 | 2018-12-21 | Double-rotating diode open-circuit fault detection method for aviation three-phase alternating-current excitation system |
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| CN109596936B CN109596936B (en) | 2020-12-08 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470984A (en) * | 2019-07-11 | 2019-11-19 | 西北工业大学 | Three-level formula starter-generator faults in rotating rectifiers on-line checking and localization method |
| CN111682703A (en) * | 2020-05-15 | 2020-09-18 | 岭东核电有限公司 | Rotating diode state monitoring system and method for brushless excitation system |
| CN111983419A (en) * | 2020-08-31 | 2020-11-24 | 清华大学 | Method and system for detecting a multiphase brushless exciter rectifier diode fault |
| CN112230117A (en) * | 2020-10-14 | 2021-01-15 | 三门核电有限公司 | Fault on-line detection system and method for AP1000 rod power supply unit rotating diode |
| CN113608144A (en) * | 2021-07-09 | 2021-11-05 | 阳江核电有限公司 | Brushless exciter and quick judging method for short-circuit fault of rotating armature winding thereof |
| CN113777530A (en) * | 2021-09-10 | 2021-12-10 | 华北电力大学（保定） | Open-circuit fault diagnosis method for rotating diode of inner rotor type three-phase brushless exciter |
| WO2022007778A1 (en) * | 2020-07-06 | 2022-01-13 | 南京航空航天大学 | Multi-open-circuit fault diagnosis method applicable to multi-phase electric motor driver |
| CN114325480A (en) * | 2021-11-19 | 2022-04-12 | 广东核电合营有限公司 | Diode open-circuit fault detection method and device for multiphase brushless exciter |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470984A (en) * | 2019-07-11 | 2019-11-19 | 西北工业大学 | Three-level formula starter-generator faults in rotating rectifiers on-line checking and localization method |
| CN110470984B (en) * | 2019-07-11 | 2021-01-05 | 西北工业大学 | Fault on-line detection and positioning method for three-stage starter generator rotating rectifier |
| CN111682703A (en) * | 2020-05-15 | 2020-09-18 | 岭东核电有限公司 | Rotating diode state monitoring system and method for brushless excitation system |
| WO2022007778A1 (en) * | 2020-07-06 | 2022-01-13 | 南京航空航天大学 | Multi-open-circuit fault diagnosis method applicable to multi-phase electric motor driver |
| CN111983419A (en) * | 2020-08-31 | 2020-11-24 | 清华大学 | Method and system for detecting a multiphase brushless exciter rectifier diode fault |
| CN112230117A (en) * | 2020-10-14 | 2021-01-15 | 三门核电有限公司 | Fault on-line detection system and method for AP1000 rod power supply unit rotating diode |
| CN112230117B (en) * | 2020-10-14 | 2023-11-24 | 三门核电有限公司 | Fault on-line detection system and method for rotating diode of AP1000 bar power unit |
| CN113608144A (en) * | 2021-07-09 | 2021-11-05 | 阳江核电有限公司 | Brushless exciter and quick judging method for short-circuit fault of rotating armature winding thereof |
| CN113777530A (en) * | 2021-09-10 | 2021-12-10 | 华北电力大学（保定） | Open-circuit fault diagnosis method for rotating diode of inner rotor type three-phase brushless exciter |
| CN113777530B (en) * | 2021-09-10 | 2023-07-11 | 华北电力大学（保定） | Open-circuit fault diagnosis method for rotating diode of inner rotor type three-phase brushless exciter |
| CN114325480A (en) * | 2021-11-19 | 2022-04-12 | 广东核电合营有限公司 | Diode open-circuit fault detection method and device for multiphase brushless exciter |
| CN114325480B (en) * | 2021-11-19 | 2023-09-29 | 广东核电合营有限公司 | Diode open-circuit fault detection method and device for multiphase brushless exciter |
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