CN109541425A - A kind of generator rotary diodes fault detection method - Google Patents
A kind of generator rotary diodes fault detection method Download PDFInfo
- Publication number
- CN109541425A CN109541425A CN201811304092.7A CN201811304092A CN109541425A CN 109541425 A CN109541425 A CN 109541425A CN 201811304092 A CN201811304092 A CN 201811304092A CN 109541425 A CN109541425 A CN 109541425A
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- CN
- China
- Prior art keywords
- generator
- waveform
- rotary diodes
- current
- diodes
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2607—Circuits therefor
- G01R31/2632—Circuits therefor for testing diodes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01R31/72—Testing of electric windings
Abstract
The present invention proposes a kind of generator rotary diodes fault detection method, first docks the positive and negative line of DC power supply with the lead-out wire of generator alternating current exciter stator winding respectively, and connect oscillograph on the positive and negative line of DC power supply；Then generator is dragged with dragging platform and goes to rated speed, adjust the output electric current of DC power supply, the waveform of exciter stator current on observation oscilloscope；If waveform is uniform sine wave or trapezoidal wave, generator rotary diodes are normal；If waveform is non-uniform sine wave or trapezoidal wave, generator rotary diodes failure.The present invention utilizes airplane power source harmonic current armature-reaction specific to alternating current generator AC exciter, observe exciting current of exciter waveform, to detect the state of rotary diodes indirectly, simply can rapidly determine whether generator rotary diodes are faulty.
Description
Technical field
The invention belongs to airplane power source alternating current generator rotary diodes fault detection technique fields, are related to one kind
Generator rotary diodes fault detection method.
Background technique
Existing airplane power source alternating current generator is in test and use process, when generator windings short circuit or diode are deposited
In failure, the big failure of exciting current can all occur, motor must be decomposed at this time while check that winding and diode could areas
Divide fault point, decomposes motor and the checking process time is long, inefficiency, the delivery for the product being often delayed.In order to accurate quick
Judgement fault point, provide repair scheme in advance, save the repairing time, need to provide one kind under the premise of not decomposing motor
Generator rotary diodes fault detection method carries out the positioning of fault point.
Summary of the invention
In order to solve the problems existing in the prior art, the present invention proposes a kind of generator rotary diodes fault detection side
Method under the premise of not decomposing generator, is accurately judged to when there is the big phenomenon of the failure of exciting current, is that generator windings are short
There are failures to provide repair scheme in advance so as to quickly determine fault point for road or generator rotary diodes,
Save the repairing time.
Technical solution
Basic principle of the invention is: utilizing harmonic current specific to airplane power source alternating current generator AC exciter
Armature-reaction observes exciting current of exciter waveform, so that the state of rotary diodes is detected indirectly, once rotation is whole
Stream diode breaks down, and armature of exciter electric current and armature-reaction will change, and excitation current waveform can occur obviously
Distortion, so the present invention determines whether rotary diodes normal by observation excitation current waveform.
The technical solution of the present invention is as follows:
A kind of generator rotary diodes fault detection method, it is characterised in that: the following steps are included:
Step 1: the positive and negative line of DC power supply is docked with the lead-out wire of generator alternating current exciter stator winding respectively,
And oscillograph is connected on the positive and negative line of DC power supply；
Step 2: generator being dragged with dragging platform and goes to rated speed, adjusts the output electric current of DC power supply, observes oscillography
The waveform of exciter stator current on device；
Step 3: if waveform is uniform sine wave or trapezoidal wave, generator rotary diodes are normal；If waveform
For non-uniform sine wave or trapezoidal wave, then generator rotary diodes failure.
Beneficial effect
After method of the invention, simply can rapidly determine whether generator rotary diodes are faulty.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is detection principle diagram of the invention；
Fig. 2 is the waveform of exciter stator current when diode is normal；
The waveform of exciter stator current when Fig. 3 is diode breakdown.
Wherein, 1 is armature of exciter winding, and 2 be exciter stator winding, and 3 be rotary diodes, and 4 be main power generation
Armature winding, 5 be main generator unit stator winding, and 6 be DC power supply, and 7 be oscillograph.
Specific embodiment
The embodiment of the present invention is described below in detail, the embodiment is exemplary, it is intended to it is used to explain the present invention, and
It is not considered as limiting the invention.
The purpose of the present invention is to propose to a kind of generator rotary diodes fault detection methods, are not decomposing generator
Under the premise of, it is accurately judged to when there is the big phenomenon of the failure of exciting current, is generator windings short circuit or generator rotation
Turning rectifier diode, there are failures, so as to quickly determine fault point, provide repair scheme in advance, save the repairing time.
Basic principle of the invention is: utilizing harmonic current specific to airplane power source alternating current generator AC exciter
Armature-reaction observes exciting current of exciter waveform, so that the state of rotary diodes is detected indirectly, once rotation is whole
Stream diode breaks down, and armature of exciter electric current and armature-reaction will change, and excitation current waveform can occur obviously
Distortion, so the present invention determines whether rotary diodes normal by observation excitation current waveform.
Generator rotary diodes fault detection method in the present embodiment, comprising the following steps:
Step 1: the positive and negative line of DC power supply is docked with the lead-out wire of generator alternating current exciter stator winding respectively,
And oscillograph is connected on the positive and negative line of DC power supply；
Step 2: generator being dragged with dragging platform and goes to rated speed, adjusts the output electric current of DC power supply, observes oscillography
The waveform of exciter stator current on device；
Step 3: if waveform is uniform sine wave or trapezoidal wave, generator rotary diodes are normal, such as Fig. 2 institute
Show；If waveform be non-uniform sine wave or trapezoidal wave, generator rotary diodes failure, as shown in Figure 3.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (1)
1. a kind of generator rotary diodes fault detection method, it is characterised in that: the following steps are included:
Step 1: the positive and negative line of DC power supply is docked with the lead-out wire of generator alternating current exciter stator winding respectively, and
Oscillograph is connected on the positive and negative line of DC power supply；
Step 2: generator being dragged gone to rated speed with dragging platform, adjust the output electric current of DC power supply, on observation oscilloscope
The waveform of exciter stator current；
Step 3: if waveform is uniform sine wave or trapezoidal wave, generator rotary diodes are normal；If waveform is not
Uniform sine wave or trapezoidal wave, then generator rotary diodes failure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811304092.7A CN109541425A (en) | 2018-11-03 | 2018-11-03 | A kind of generator rotary diodes fault detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811304092.7A CN109541425A (en) | 2018-11-03 | 2018-11-03 | A kind of generator rotary diodes fault detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109541425A true CN109541425A (en) | 2019-03-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811304092.7A Pending CN109541425A (en) | 2018-11-03 | 2018-11-03 | A kind of generator rotary diodes fault detection method |
Country Status (1)
| Country | Link |
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| CN (1) | CN109541425A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203658529U (en) * | 2014-01-10 | 2014-06-18 | 柳州杰诺瑞汽车电器系统制造有限公司 | Generator diode detection device |
| CN104483612A (en) * | 2014-12-15 | 2015-04-01 | 南京南瑞继保电气有限公司 | Harmonic analysis anti-interference method |
| CN105891652A (en) * | 2015-02-12 | 2016-08-24 | 通用电气公司 | Method and apparatus for detecting alternator rectifier diode short fault |
| US9547033B1 (en) * | 2011-11-12 | 2017-01-17 | Sunpower Corporation | Hierarchical fault prediction, detection and localization in PV systems with distributed electronics |
| CN106483442A (en) * | 2016-11-11 | 2017-03-08 | 凌云科技集团有限责任公司 | The testing equipment of combination driven generator commutation diode and detection method |
-
2018
- 2018-11-03 CN CN201811304092.7A patent/CN109541425A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9547033B1 (en) * | 2011-11-12 | 2017-01-17 | Sunpower Corporation | Hierarchical fault prediction, detection and localization in PV systems with distributed electronics |
| CN203658529U (en) * | 2014-01-10 | 2014-06-18 | 柳州杰诺瑞汽车电器系统制造有限公司 | Generator diode detection device |
| CN104483612A (en) * | 2014-12-15 | 2015-04-01 | 南京南瑞继保电气有限公司 | Harmonic analysis anti-interference method |
| CN105891652A (en) * | 2015-02-12 | 2016-08-24 | 通用电气公司 | Method and apparatus for detecting alternator rectifier diode short fault |
| CN106483442A (en) * | 2016-11-11 | 2017-03-08 | 凌云科技集团有限责任公司 | The testing equipment of combination driven generator commutation diode and detection method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190329 |
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| RJ01 | Rejection of invention patent application after publication |