CN109116277A - Claw-pole type generator rotor magnetic is capable of measuring device and method - Google Patents
Claw-pole type generator rotor magnetic is capable of measuring device and method Download PDFInfo
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- CN109116277A CN109116277A CN201810766909.6A CN201810766909A CN109116277A CN 109116277 A CN109116277 A CN 109116277A CN 201810766909 A CN201810766909 A CN 201810766909A CN 109116277 A CN109116277 A CN 109116277A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
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Abstract
一种爪极式发电机转子磁性能测量装置及方法，包括：测试基座以及固定设置于测试基座上的带槽导磁环，其中：待测发电机转子固定设置于测试基座内且其线圈正对带槽导磁环，带槽导磁环与直流磁性能测量仪相连，当待测发电机转子工作时带槽导磁环由感应磁场生成检测电流，经直流磁性能测量仪检测换算得到爪极式发电机转子磁性能。本装置测量结果更为敏感更为直接地反映爪极式发电机转子的优劣，整个测试流程相对简单，可以大幅节省测量成本。可以实现电机装配前每件无损检测，用于分析转子装配与爪极制造工艺对转子磁性能的影响规律。
A claw-pole generator rotor magnetic performance measurement device and method, comprising: a test base and a slotted magnetic conducting ring fixedly arranged on the test base, wherein: the generator rotor to be tested is fixedly arranged in the test base and Its coil is facing the slotted magnetic permeable ring, and the slotted magnetic permeable ring is connected to the DC magnetic performance measuring instrument. When the rotor of the generator to be tested is working, the slotted magnetic permeable ring generates a detection current from the induced magnetic field, which is detected by the DC magnetic performance measuring instrument. The magnetic properties of the claw-pole generator rotor are obtained by conversion. The measurement results of the device reflect the pros and cons of the claw-pole generator rotor more sensitively and directly, and the whole test process is relatively simple, which can greatly save the measurement cost. It can realize the non-destructive testing of each piece before the motor assembly, which is used to analyze the influence of the rotor assembly and claw pole manufacturing process on the magnetic performance of the rotor.
Description
Technical field
The present invention relates to the technology that a kind of rotor magnetic is capable of measuring field, specifically a kind of claw-pole type generator rotor magnetic
It is capable of measuring device and method.
Background technique
The method of evaluation claw-pole type generator rotor performance is obtained using the device of test electrical power generators efficiency at present
Speed and current relation curve.But testboard bay needed for this method is complex and expensive, needs to complete generator in test
Whole assembly and dismantling process, entire testing process is complicated, and manually introduce during installation many uncontrollable influences because
Element.The measurement method of traditional magnetic energy needs to make standard sample (referring to " GB/T 13012-2008 soft magnetic materials DC magnetic
The measurement method of energy "), and it is easy performance uneven phenomenon caused by ignoring pawl pole manufacturing process, corresponding measurement result can not
Reflect the whole magnetic property for the rotor being assembled by pawl pole completely.Research directly measurement claw-pole type generator rotor magnetic energy
Method then can be avoided above-mentioned deficiency, be suitble to every detection before motor assembly, and can be used for analyzing rotor assembly and manufacture with pawl pole
Affecting laws of the technique to rotor magnetic energy.
Summary of the invention
The present invention In view of the above shortcomings of the prior art, proposes that a kind of claw-pole type generator rotor magnetic is capable of measuring dress
It sets and method according to the magnet exciting coil of claw-pole type generator rotor devises trough of belt magnetic guiding loop and use with special construction
The measuring coil of specific process winding, similar operating fields are distributed with actual generator height for building, measure corresponding pawl pole
Formula generator amature magnetic property index；It is not necessarily to repeated disassembled and assembled generator in test process, turns without claw-pole type generator is destroyed
Son；Influence for power generation performance after evaluation being on active service to it of claw-pole type generator rotor provides new technological approaches.
The present invention is achieved by the following technical solutions:
The present invention relates to a kind of claw-pole type generator rotor magnetics to be capable of measuring device, comprising: Test bench and fixation are set
The trough of belt magnetic guiding loop being placed on Test bench, in which: testing generator rotor be fixedly installed in Test bench and its coil just
To trough of belt magnetic guiding loop, trough of belt magnetic guiding loop is capable of measuring instrument with DC magnetic and is connected, the trough of belt magnetic conduction when testing generator working rotor
Ring generates detection electric current by induced magnetic field, is capable of measuring instrument detection conversion through DC magnetic and obtains claw-pole type generator rotor magnetic
Energy.
The Test bench includes: the positioning plate of positioning base and connection fixed thereto, in which: positioning plate, which is equipped with, to be used
In being respectively provided with fixed trough of belt magnetic guiding loop on the special-shaped locating shaft of the armature spindle of fixed testing generator rotor, positioning base
With the annular groove of testing generator rotor.
The trough of belt magnetic guiding loop connect positioning with screw using pin with positioning base and positioning plate, guarantees that trough of belt is led
The relative positional relationship of magnet ring and positioning plate.
The positioning base be equipped with intermediate throughholes, the central boss clearance fit of intermediate throughholes lower end and positioning plate,
Central boss is equipped with special-shaped locating shaft and is fixedly connected with the armature spindle of testing generator rotor.
For winding the centripetal card slot of measuring coil, the winding of the measuring coil there are four being set on the trough of belt magnetic guiding loop
Method are as follows: using any card slot as starting point, conducting wire is first wound to aiming circle number in the direction of the clock, adjacent card slot is then introduced and presses
Counterclockwise winding same number of turns, is re-introduced into adjacent next card slot and winds same number of turns in the direction of the clock, is finally introducing the
Four card slots by winding same number of turns counterclockwise.The conducting wire one that will start the conducting wire one end introduced respectively and finally draw
Hold the positive and negative polarities as measuring coil.
The present invention relates to a kind of measurement methods based on above-mentioned apparatus, utilize itself magnet exciting coil of claw-pole type generator rotor
Excitation field is formed, electric current is induced in the measuring coil wound according to the mode, measures corresponding magnetic property index.
The measuring coil is tested preceding by inputting the excitation voltage wave back and forth decayed in magnet exciting coil after access
Shape, until decaying to zero external magnetic field strength to realize demagnetization.
The excitation field applies excitation voltage in magnet exciting coil two sides by field power supply, calculates in magnet exciting coil
The exciting current I of generation, at this time corresponding external magnetic field strength H=N1 × I/Le, exciting current, which should start from scratch, stablizes increase, directly
Reach maximum to external magnetic field strength.
The magnetic property index obtains magnetic outside difference by the way that the electrical signal of reaction generated in measurement induction coil is integrated
The induced flux Φ generated in coil is calculated in induced current under the conditions of field intensity；It is continuous when external magnetic field strength
Increasing the corresponding induction level that obtains is B=Φ/(N2 × Ae), measurement is repeated several times, and results are averaged, finally
Obtain the Overall magnetization curve of claw-pole type generator rotor.
Technical effect
With the existing method phase for evaluating claw-pole type generator rotor performance superiority and inferiority by generator performance bench test
Than the present invention provides a kind of new technological approaches, measure and are not necessarily to repeated disassembled and assembled generator in evaluation procedure, measurement result is more
The sensitive superiority and inferiority for more directly reflecting claw-pole type generator rotor, entire testing process is relatively easy, can substantially save survey
Measure cost.From the point of view of magnetism of material is capable of measuring, with existing Chinese Industrial Standards (CIS) " GB/T 13012-2008 soft magnetic materials DC magnetic energy
Measurement method " define ring specimen method and compared with ferrometer measurement method, the present invention can turn claw-pole type generator
Directly as measurand, realizes non-destructive testing, avoid influence of the processing history to testing result of standard sample, also more
Ground is convenient and efficient；The preceding every detection of motor assembly may be implemented, for analyzing rotor assembly with pawl pole manufacturing process to rotor magnetic
The affecting laws of performance.
Detailed description of the invention
Fig. 1 is overall structure of the present invention；
Fig. 2A~Fig. 2 C is the structural schematic diagram of trough of belt magnetic guiding loop；
Fig. 3 A, Fig. 3 B are the measuring coil of the coiling of trough of belt magnetic guiding loop；
Fig. 4 is the magnet exciting coil schematic diagram of tested claw pole electric generator rotor；
Fig. 5 is tested claw-pole type generator rotor schematic diagram；
Fig. 6 is embodiment Overall magnetization curve synoptic diagram；
Fig. 7 is embodiment test schematic diagram；
In figure: pin 1, claw-pole type generator rotor to be measured and its armature spindle 2, trough of belt magnetic guiding loop 3, measuring coil 4, direct current
Magnetic property measuring instrument 5, magnet exciting coil to be measured 6, positioning base 7, screw 8, positioning plate 9, special-shaped locating shaft 10, intermediate lands 11,
It is centripetal card slot 12, bottom plate 13, central boss 14, plum blossom keyway or cross recess 15, claw-pole type generator rotor 201 to be measured, to be measured
Claw-pole type generator armature spindle 202, coil lead 601.
Specific embodiment
As shown in Figure 1, a kind of pawl pole rotor entirety magnetic property measuring device being related to for the present embodiment, wherein trough of belt magnetic conduction
Ring 3 is achieved a fixed connection using pin 1 with screw with positioning base 7 and positioning plate 9, guarantees trough of belt magnetic guiding loop 3 and positioning plate 9
Relative positional relationship.
The positioning base 7 is equipped with intermediate throughholes, intermediate throughholes lower end and 11 clearance fit of intermediate lands, and centre is logical
Hole upper end and tested claw-pole type generator armature spindle 2 cooperate the accurate positionin to realize rotor, guarantee rotor and magnetic conduction interannular gas
The dimensional accuracy of gap.
The upper end of the positioning base 7 is equipped with annular groove, and with 3 clearance fit of trough of belt magnetic guiding loop, the centre of annular groove is convex
Platform 11 is used to support measured rotor, the height H of the intermediate lands 111=(0.2~0.4) H0, H0Turn for tested claw-pole type generator
Two pawl pole end face distances of son；Its center is equipped with through-hole, forms clearance fit with measured rotor；It is larger that there are sizes for its lower end
Counterbore, for arrange positioning plate fasten backing plate.Its material is paramagnetic material.
As shown in Fig. 2A~Fig. 2 C, the trough of belt magnetic guiding loop 3, it is ensured that trough of belt magnetic guiding loop can be covered effectively when measurement
It is put into tested claw-pole type generator rotor 2 therein；The height H of trough of belt magnetic guiding loop 32=H1+ηH0, η takes 0.1~0.2.
For winding the centripetal card slot 12 of measuring coil, four centripetal card slots there are four being set on the trough of belt magnetic guiding loop 3
Angle between 12 is respectively 2 α, 90 °, 2 β and 90 °, and α and β meet | alpha-beta |=(1~2) °, alpha+beta=90 °.
The centripetal card slot 12 of described four is in trough of belt magnetic guiding loop apart from its lower end surface H1+0.5H0Position punish in order to upper and lower
Two parts, the height of top and the bottom are respectively t1And t2, and the top and the bottom of adjacent card slot are respectively present difference in height Δ t=(0.5
~1) mm, i.e., the upper Partial Height of first card slot are t1=t0, t0=0.4H0, lower Partial Height is t2=t0+ Δ t is then adjacent
The upper Partial Height of second card slot is t1=t0+ Δ t, lower Partial Height are t2=t0；The upper Partial Height of third card slot is
t1=t0, lower Partial Height is t2=t0+Δt；The upper Partial Height of 4th card slot is t1=t0+ Δ t, lower Partial Height are t2
=t0；The width of four card slotsκ=0.165~0.185, SPawl poleTo form tested claw-pole type generator rotor
The boss sectional area of pawl pole；Card slot circumferential width is 5~6mm, and inside and outside radial depth is 4~5mm.
The internal diameter of the trough of belt magnetic guiding loop 3 and the unilateral gap of measured rotor outer diameter are 0.2~0.4mm, trough of belt magnetic conduction
The outer diameter D of ring1=λ (D0+ 2w+ δ), D0For the interior diameter of trough of belt magnetic guiding loop, λ=1.05~1.2, δ=(8~10) mm.Its material
For the soft magnetic materials of high-magnetic conductivity high-saturation magnetic strength.
As shown in Figure 3A and Figure 3B, the measuring coil 4, corresponding lead winding method are as follows: with any centripetal card slot
12a is starting point, and conducting wire is first wound to aiming circle number in the direction of the clock, then introduces adjacent card slot 12b by inverse by series connection
Clockwise winds same number of turns, is re-introduced into adjacent next card slot 12c and winds same number of turns in the direction of the clock, is finally introducing the
Four card slot 12d by winding same number of turns counterclockwise.It is drawn respectively by the conducting wire one end 12e for starting introducing and finally
Positive and negative polarities of conducting wire one end 12f as measuring coil.At this point, with the magnetic of central axes period profile in entire trough of belt magnetic guiding loop
Induction changes in corresponding position with exciting current and the electric current that induces in measuring coil is in the same direction always, measuring coil it
Between be serially connected, calculate magnetic flux when the measurement result of four measured planes is averaged, eliminate because rotor positioning miss
The measurement error that difference introduces.
The measuring coil 4 needs maximum the number of turns of wound around coil aiming circle number that can pass through formula:
It calculates and obtains, in which:The magnetic flux maximum range of instrument 5 is capable of measuring for DC magnetic.
As shown in figure 4, the positioning plate 9 includes bottom plate 13 and central boss 14, in which: central boss 14 and positioning bottom
Seat clearance fit, boss center are equipped with plum blossom keyway or cross recess 15 for fixed special-shaped locating shaft 10, and bottom plate 13 is circumferentially
It is provided with multiple and bayonet fittings location holes, angle theta=30 ° between location hole；Rotating retaining plate makes different location holes
It with bayonet fittings, repeatedly measures and is averaged, can more accurately evaluate the magnetic property of claw-pole type generator rotor.Its material
For paramagnetic material.
Section form for special-shaped locating shaft 10 that is fixed and positioning tested claw-pole type generator rotor is plum blossom or ten
Font, material are paramagnetic material.
The measured rotor overall diameter is 98.7mm, so the interior diameter of trough of belt annular magnet yoke is 98.7+0.5 × 2=
99.7mm, the overall diameter with grooved ring magnetic guiding loop are 99.7+15 × 2=129.7mm,
As shown in figure 5, the tested claw-pole type generator rotor, inside has installed magnet exciting coil.
As shown in fig. 7, the present apparatus is tested in the following manner:
Step 1: disposing rotor to be measured, claw-pole type generator rotor to be measured is put into Test bench, rotor bottom passes through plum
Spline or cross recess positioning and annular groove positioning.
Step 2: needing to be capable of measuring the number of turns of magnet exciting coil on input rotor in instrument 5 in DC magnetic before starting test
N1, card slot cross-sectional area S=w × (t of trough of belt magnetic guiding loop1+t2) and measuring coil the number of turns N2.Measure each of rotor measurement region
Dimensional parameters: rotor upper and lower end face height H0, trough of belt magnetic conduction ring diameter D0With overall diameter D1, on trough of belt magnetic guiding loop card slot width w and
Card slot total height t1+t2；Calculate equivalent magnetic circuit length Le=2H0+D0+D1, with equivalent cross-sectional area Ae=w × (t1+t2)；Then will
Coil accesses test interface, by inputting the excitation voltage waveform back and forth decayed in magnet exciting coil, until decaying to zero outer magnetic
Field intensity completes the demagnetization of sample to be tested.
Step 3: according to required maximum external magnetic field strength Hm, excitation electricity is applied in magnet exciting coil two sides by field power supply
Pressure calculates the exciting current I generated in magnet exciting coil, at this time corresponding external magnetic field strength H=N1 × I/Le, exciting current should be from
Zero starts to stablize increase, until external magnetic field strength reaches the current value of maximum (such as 6000A/m).
Step 4: the electrical signal of reaction generated in measurement induction coil, integrates to obtain magnetic outside difference by electronic integrator
Induced current size under the conditions of field intensity, operation obtain the induced flux Φ generated in coil.With external magnetic field strength
Be continuously increased, calculating and obtaining corresponding induction level is B=Φ/(N2 × Ae)。
Step 5: corresponding measuring range gear is selected, so that measured signal according to the current signal size that measurement obtains
Size is between the 50% to 100% of maximum range, to improve measurement accuracy.
Step 6: repeating to detect, rotating retaining plate makes second location hole adjacent with first location hole on positioning plate
With bayonet fittings, third is repeated to the 5th step.To measurement is repeated several times, results are averaged, obtains claw-pole type generator rotor
Overall magnetization curve.
Compared with prior art, the present apparatus can measure rotor in the case where not broken ring claw-pole type generator rotor
Whole DC static magnetic property avoids influence of the process of standard ring specimen and ferrometer sample to test result,
And can in the production process of pawl pole rotor rapid survey rotor magnetic property.
Above-mentioned specific implementation can by those skilled in the art under the premise of without departing substantially from the principle of the invention and objective with difference
Mode carry out local directed complete set to it, protection scope of the present invention is subject to claims and not by above-mentioned specific implementation institute
Limit, each implementation within its scope is by the constraint of the present invention.
Claims (10)
1. a kind of claw-pole type generator rotor magnetic is capable of measuring device characterized by comprising Test bench and fixed setting
In the trough of belt magnetic guiding loop on Test bench, in which: testing generator rotor is fixedly installed in Test bench and its coil face
Trough of belt magnetic guiding loop, trough of belt magnetic guiding loop are capable of measuring instrument with DC magnetic and are connected, the trough of belt magnetic guiding loop when testing generator working rotor
Detection electric current is generated by induced magnetic field, instrument detection conversion is capable of measuring through DC magnetic and obtains claw-pole type generator rotor magnetic energy.
2. the apparatus according to claim 1, characterized in that the Test bench includes: positioning base and fixed thereto
The positioning plate of connection, in which: positioning plate is equipped with the special-shaped locating shaft for fixing the armature spindle of testing generator rotor, positioning
The annular groove of fixed trough of belt magnetic guiding loop and testing generator rotor is respectively provided on pedestal.
3. the apparatus of claim 2, characterized in that the trough of belt magnetic guiding loop is adopted with positioning base and positioning plate
It connect positioning with screw with pin, guarantees the relative positional relationship of trough of belt magnetic guiding loop and positioning plate.
4. the apparatus of claim 2, characterized in that the positioning base is equipped with intermediate throughholes, intermediate throughholes
The intermediate lands clearance fit of lower end and annular groove, intermediate throughholes upper end cooperate with tested claw-pole type generator armature spindle to realize
The accurate positionin of rotor guarantees the dimensional accuracy of rotor and magnetic conduction interannular air gap.
5. the apparatus of claim 2, characterized in that the positioning plate include: bottom plate and with positioning base gap
The central boss of cooperation, in which: boss center is equipped with plum blossom keyway or cross recess for fixed special-shaped locating shaft, and bottom plate is along week
To multiple and bayonet fittings location holes are provided with, make different location hole and bayonet fittings repeatedly to survey by rotating retaining plate
It measures and is averaged.
6. the apparatus according to claim 1, characterized in that for winding measurement there are four being set on the trough of belt magnetic guiding loop
The centripetal card slot of coil, the winding method of the measuring coil are as follows: using any card slot as starting point, first in the direction of the clock twine conducting wire
Around to aiming circle number, adjacent card slot is then introduced by series connection and winds same number of turns counterclockwise, is re-introduced into adjacent next
Card slot winds same number of turns in the direction of the clock, is finally introducing the 4th card slot by same number of turns is wound counterclockwise, divides
Not using the conducting wire one end for starting the conducting wire one end introduced and finally drawing as the positive and negative polarities of measuring coil；At this point, entire
In trough of belt magnetic guiding loop with the magnetic induction intensity of central axes period profile corresponding position with exciting current change and in measuring coil
In the electric current that induces it is in the same direction always, be serially connected between measuring coil, by four measured planes when calculating magnetic flux
Measurement result is averaged, and eliminates the measurement error introduced by the position error of rotor.
7. a kind of measurement method based on any of the above-described claim described device, which is characterized in that utilize claw-pole type generator
Rotor itself magnet exciting coil forms excitation field, induces electric current in the measuring coil wound according to the mode, measures corresponding
Magnetic property index.
8. according to the method described in claim 7, it is characterized in that, the measuring coil tested after access before by excitation
The excitation voltage waveform back and forth decayed is inputted in coil, until decaying to zero external magnetic field strength to realize demagnetization.
9. according to the method described in claim 7, it is characterized in that, the excitation field, by field power supply in magnet exciting coil
Two sides apply excitation voltage, calculate the exciting current I generated in magnet exciting coil, at this time corresponding external magnetic field strength H=N1 × I/
Le, exciting current should start from scratch to stablize and increase, until external magnetic field strength reaches maximum.
10. according to the method described in claim 7, it is characterized in that, the magnetic property index, by measurement induction coil in produce
Raw electrical signal of reaction is integrated obtains the induced current under the conditions of different external magnetic field strengths, is calculated and generates in coil
Induced flux Φ；When the corresponding induction level that obtains that is continuously increased of external magnetic field strength is B=Φ/(N2 × Ae), warp
Measurement is repeated several times, and results are averaged, finally obtains the Overall magnetization curve of claw-pole type generator rotor.
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| CN201810766909.6A CN109116277B (en) | 2018-07-13 | 2018-07-13 | Apparatus and method for measuring magnetic properties of claw-pole generator rotor |
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| CN201810766909.6A CN109116277B (en) | 2018-07-13 | 2018-07-13 | Apparatus and method for measuring magnetic properties of claw-pole generator rotor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114397610A (en) * | 2021-12-31 | 2022-04-26 | 江苏龙城精锻集团有限公司 | A combined automobile claw pole generator claw pole magnetic performance measurement device and method |
| CN114487950A (en) * | 2021-12-31 | 2022-05-13 | 中国航发长春控制科技有限公司 | Method for detecting coercive force of armature part |
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|---|---|---|---|---|
| CN103018687A (en) * | 2012-11-23 | 2013-04-03 | 华北电力大学 | Method of measuring permanent magnet motor rotor field in real time |
| CN205246843U (en) * | 2015-12-08 | 2016-05-18 | 常州亚美柯宝马电机有限公司 | Electric motor rotor surveys magnetic flux frock |
| CN105954693A (en) * | 2016-04-20 | 2016-09-21 | 高秋红 | Rotor magnetism detection method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018687A (en) * | 2012-11-23 | 2013-04-03 | 华北电力大学 | Method of measuring permanent magnet motor rotor field in real time |
| CN205246843U (en) * | 2015-12-08 | 2016-05-18 | 常州亚美柯宝马电机有限公司 | Electric motor rotor surveys magnetic flux frock |
| CN105954693A (en) * | 2016-04-20 | 2016-09-21 | 高秋红 | Rotor magnetism detection method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114397610A (en) * | 2021-12-31 | 2022-04-26 | 江苏龙城精锻集团有限公司 | A combined automobile claw pole generator claw pole magnetic performance measurement device and method |
| CN114487950A (en) * | 2021-12-31 | 2022-05-13 | 中国航发长春控制科技有限公司 | Method for detecting coercive force of armature part |
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| CN109116277B (en) | 2020-02-18 |
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Address after: 200240 No. 800, Dongchuan Road, Shanghai, Minhang District Patentee after: SHANGHAI JIAO TONG University Patentee after: Jiangsu Longcheng Precision Forging Group Co.,Ltd. Address before: 200240 No. 800, Dongchuan Road, Shanghai, Minhang District Patentee before: SHANGHAI JIAO TONG University Patentee before: JIANGSU LONGCHENG PRECISION FORGING Co.,Ltd. |