A kind of vertical three-phase flexibility wideband rotary magnetic characteristic measuring system
Technical field
The utility model relates to wideband rotary magnetic Characteristics Detection field, specifically a kind of vertical three-phase flexibility wideband rotary magnetic
Characteristic measuring system.
Background technique
The measurement sample of magnetic material magnetic characteristic is single plate shape in electrician's equipment more general at present, and One-Dimension Magnetic is special
Property measuring device in the most commonly used is rectangular monolithic sample structures, for example, being by growing for the sample of one-dimensional epstein frame method
Bar shaped silicon steel sheet is formed by overlapping;Sample for two-dimentional single sheet measurement method is square Single Magnetic material.With to magnetic material
Material research gradually deeply, need that the magnetic characteristic of each frequency band is tested in actual condition to monolithic-like magnetic material,
And when measuring to sample to be tested, the magnetization homogeneous area at sample to be tested center needs to increase.So design three-phase is soft
Property wideband magnetic characteristic detection device and measurement method become the essential ring of magnetic characteristic fields of measurement.
Traditional One-Dimension Magnetic feature measurement such as epstein frame method only considered the magnetic characteristic of a direction in plane, and two
The magnetic characteristic measurement such as rectangular single sheet measurement method of two dimension is tieed up to enable in two in plane just using the print to be measured of square
The field core in direction is handed over to carry out magnetized mode to square print to be measured.
Existing One-Dimension Magnetic characteristic measuring device and method only considered the magnetic characteristic of a direction in plane, but in reality
In operating condition, if there is rotation magnetic characteristic in electric machine iron core dynamic magnetic characteristic, transformer turning or "T"-shaped junction, core material
B, H relationship that magnetic conductivity or magnetic reluctance are embodied no longer are scalars but complicated tensor form.Therefore, traditional one-dimensional method is simultaneously
It is not capable of measuring rotary magnetic characteristic, will lead to the inaccuracy of engineering calculation, and the practical biggish deviation of generation, this electromagnetism calculate
Inaccuracy cause electrician equipment non-optimized design, so as to cause added losses increase or cause hot-spot
The problems such as.
Existing two-dimensional magnetic property measuring device and method are using square print, and square print is relative to six sides
For shape print, the center homogeneous area after print magnetization is good not as good as hexagon, and measurement error is bigger than hexagon print.It is existing
It is identical with shape using plane formula excitation structure when two-dimensional magnetic property measuring device is measured using hexagon print
Print stack into field core, this have the consequence that there is rotation magnetic characteristic in the "T"-shaped junction of field core, work as excitation
When winding passes through electric current, iron core can generate bigger leakage field, and the induced voltage signal on the surface of print is natively very faint, also
More spurious signals and harmonic wave can be introduced.
The magnetic characteristic detection device of prior art, excitation winding is low using rectangular configuration window utilization rate, and leakage field problem is prominent
Out;Magnetic circuit material is silicon steel sheet, core loss with higher under high frequency, and heating problem is serious.The detection device of prior art
It can not achieve the simulation that magnetic characteristic is rotated under high frequency.
" Zhang Yanli, He Houjian, shed is fragrant, the electrical sheet that KOH Chang-seop. is measured based on two-dimensional magnetic property for document
Vector hysteresis model [J] Proceedings of the CSEE, 2010,30 (03): 130-135 " in print to be measured be it is rectangular, side
Shape print is good not as good as regular hexagon compared to the uniformity coefficient for regular hexagon print when print is magnetized.And measurement B
Transducing signal belongs to destructive measurement using the method tested, this method is punched on print, punches to be measured
Measured zone on print can generate residual stress, pair the measurement of magnetic characteristic have larger impact.
Utility model content
In view of the deficiencies of the prior art, it is flexible that the technical issues of the utility model intends to solve is to provide a kind of vertical three-phase
Wideband rotary magnetic characteristic measuring system.
The technical solution that the utility model solves the technical problem is to provide a kind of vertical three-phase flexibility wideband rotary magnetic
Characteristic measuring system, it is characterised in that the system includes noninductive capacitor, LabVIEW test platform, power amplifier and vertical three
Mutually flexible wideband magnetic characteristic detection device;Described device includes the fixed bracket of iron core, iron core, B-H magnetic signal sensor coil plate, branch
Column, excitation winding, B probe, internal layer H coil and outer layer H coil;The LabVIEW test platform is connect with power amplifier,
Power amplifier and noninductive capacitance connection, noninductive capacitor are connect with excitation winding;
The iron core is fixed on the fixed bracket of iron core;Iron core includes upper iron core, lower iron core and side iron core;It fixes
The cartridge of upper iron core, lower iron core and side iron core is connected with each other, and junction forms a regular hexagon;The pillar is fixed to iron
On the fixed bracket of the heart, the regular hexagon structure of post top portion and the cartridge of upper iron core, lower iron core and side iron core surround positive six
Side shaped position is overlapped, and the regular hexagon structure top end of post top portion is placed with print to be measured, print to be measured and upper iron core, lower iron core
With at the cartridge of side iron core be aligned and contact;Root B probe is uniformly fixed on B-H magnetic signal sensor coil plate;Internal layer H line
Circle is wound on B-H magnetic signal sensor coil plate;Outer layer H coil winding is located at internal layer on B-H magnetic signal sensor coil plate
It is on the outside of H coil and vertical with internal layer H coil;The B-H magnetic signal sensor coil plate is placed in the center position of print to be measured;
An excitation winding is nested at each cartridge of upper iron core, lower iron core and side iron core.
Compared with prior art, the utility model beneficial effect is:
1, the iron core of the utility model is formed using the ultra-thin silicon steel coil system of 0.05mm, and ultra-thin silicon steel is compared to common silicon steel
Have the characteristics that high saturation magnetic induction, high initial permeability, low core loss, heat resistance and wearability are good, due to print magnetic to be measured
When changing to saturation state, the electric current that excitation winding is passed through be it is bigger, generated heat with the iron core of ultra-thin silicon steel few, to the temperature of print
Rise situation influence it is small, test it is more accurate, test frequency can from several hertz to tens kHz.
2, the iron core in the utility model can be formed than square more in the regular hexagon central area that iron core surrounds
Uniform magnetic field cooperates the print to be measured of regular hexagon, reduces excitation difficulty, improves experimental precision, and measures B sensing
Signal belongs to non-destroyed measurement using the method tested with probe, this method, treats test sample piece compared to punching
On measured zone can generate residual stress, have larger impact, the test side of this non-destroyed measurement to the measurement of magnetic characteristic
Method can test the magnetic characteristic of more true magnetic material.
3, the utility model, can be according to different frequencies using the number of plies gradually increased trapezoidal excitation winding construction is segmented
Different connection types is selected, the magnetic characteristic suitable for more broadband measures, frequency no longer fixed single, but can be by not
Same input terminal and outlet terminal is flexibly connected, and each layer of excitation winding has input terminal and outlet terminal, facilitates reality
Now different number of plies excitation windings is series-parallel, and compared to traditional rectangle excitation winding connection type, this segmentation number of plies is gradually
Increased trapezoidal excitation winding construction increases the winding volume utilization rate in plane, reduces excitation difficulty, and it is difficult to reduce excitation
It spends in print close to being very important when being magnetized into saturation state, because of the electricity that print closer to magnetic saturation, needs
Bigger, the unbearable excessive electric current of experimental facilities in test is flowed, so it is particularly significant to reduce excitation difficulty.
4, the magnetic circuit of the utility model is formed using vertical three iron cores, compares plane Superimposed three-phase iron core, three iron
The heart is mutually indepedent, and magnetic circuit does not intersect, and the magnetic line of force that each iron core generates is mutually indepedent in iron core, will not exist because of the magnetic line of force
The spurious signal that intersects in iron core and harmonic wave cause experimental result inaccurate.
5, the utility model inductance capacitance ohmmeter measuring instrument measures the inductance under frequency and winding connection at this time,
The capacitor needed at this time is calculated according to resonance equation, is matched using noninductive capacitor, advantage of this is that reduce to encourage
Magnetic beach degree causes test experiments to be stranded so that the voltage in circuit will not increase too fast because of the raising with frequency
It is difficult.
6, the system can be realized the accurate of a peacekeeping two dimension dynamic magnetic characteristic of the monolithic magnetic material in electrician's equipment
Measurement.
Detailed description of the invention
A kind of overall structure axis of embodiment of the vertical three-phase flexibility wideband rotary magnetic characteristic measuring system of Fig. 1 the utility model
It measures and is intended to;
Fig. 2 is a kind of vertical excitation winding of embodiment of three-phase flexibility wideband rotary magnetic characteristic measuring system of the utility model
With iron core connection schematic diagram;
Fig. 3 be a kind of upper iron core of embodiment of the vertical three-phase flexibility wideband rotary magnetic characteristic measuring system of the utility model,
Lower iron core, side iron core and print connection schematic diagram to be measured;
Fig. 4 is a kind of vertical excitation winding of embodiment of three-phase flexibility wideband rotary magnetic characteristic measuring system of the utility model
Axonometric schematic diagram;
Fig. 5 is a kind of embodiment of the vertical three-phase flexibility wideband rotary magnetic characteristic measuring system of the utility model to test sample
Piece, B-H magnetic signal sensor coil plate, internal layer H coil and outer layer H coil scheme of installation;
Fig. 6 is that a kind of B-H magnetic of embodiment of the vertical three-phase flexibility wideband rotary magnetic characteristic measuring system of the utility model is believed
Number sensor coil plate, B probe, internal layer H coil and outer layer H coil scheme of installation;
Fig. 7 is a kind of embodiment of the vertical three-phase flexibility wideband rotary magnetic characteristic measuring system of the utility model without electrification
Appearance, LabVIEW test platform, the connection schematic diagram of power amplifier and device;
Fig. 8 is that a kind of vertical iron core of embodiment of three-phase flexibility wideband rotary magnetic characteristic measuring system of the utility model is fixed
Support schematic diagram;
Fig. 9 is that a kind of vertical upper iron core of embodiment of three-phase flexibility wideband rotary magnetic characteristic measuring system of the utility model shows
It is intended to;
Figure 10 is a kind of side iron of embodiment of the vertical three-phase flexibility wideband rotary magnetic characteristic measuring system of the utility model
Heart schematic diagram;
Figure 11 is that a kind of vertical pillar of embodiment of three-phase flexibility wideband rotary magnetic characteristic measuring system of the utility model shows
It is intended to;
Figure 12 is that a kind of vertical buckle of embodiment of three-phase flexibility wideband rotary magnetic characteristic measuring system of the utility model shows
It is intended to;(in figure: 1, the fixed bracket of iron core;2, upper iron core;3 lower iron cores;4, side iron core;5, print to be measured;6, B-H magnetic signal
Sensor coil plate;7, it buckles;8, pillar;9, non-magnetic screw;10, excitation winding;11, first layer magnet exciting coil;12, second
Layer magnet exciting coil;13, third layer magnet exciting coil;14, noninductive capacitor;15, LabVIEW test platform;16, B probe;17, internal layer H
Coil;18, outer layer H coil;19, input terminal;20, outlet terminal;21, power amplifier)
Specific embodiment
Specific embodiment of the utility model is given below.Specific embodiment is only used for being further described originally practical new
Type does not limit the protection scope of the claim of this application.
The utility model provide a kind of vertical three-phase flexibility wideband rotary magnetic characteristic measuring system (abbreviation system, referring to
Fig. 1-12), it is characterised in that the system includes noninductive capacitor 14, LabVIEW test platform 15, power amplifier 21 and vertical three
Mutually flexible wideband magnetic characteristic detection device (abbreviation device);Described device includes the fixed bracket 1 of iron core, iron core, B-H magnetic signal biography
Feel coil plate 6, pillar 8, excitation winding 10, B probe 16, internal layer H coil 17 and outer layer H coil 18;The LabVIEW test is flat
Platform 15 is connect with power amplifier 21, and power amplifier 21 is connect with noninductive capacitor 14, and noninductive capacitor 14 connects with excitation winding 10
It connects;
The iron core is fixed on the fixed bracket 1 of iron core by buckle 7 and the cooperation of non-magnetic screw 9;Iron core includes upper iron
The heart 2, lower iron core 3 and side iron core 4;The cartridge of upper iron core 2, lower iron core 3 and side iron core 4 processes wedgewise;Upper iron core 2 is under
Iron core 3 is identical, and the wedge shape of the cartridge of side iron core 4 is rotated by 90 ° relative to upper iron core 2 and the cartridge of lower iron core 3;What is fixed is upper
The cartridge of iron core 2, lower iron core 3 and side iron core 4 is connected with each other, and junction forms a regular hexagon;The pillar 8 passes through
Non-magnetic screw 9 is fixed on the fixed bracket 1 of iron core, the regular hexagon structure at 8 top of pillar and upper iron core 2, lower iron core 3 and side
The regular hexagon position that the cartridge of face iron core 4 surrounds is overlapped, and the regular hexagon structure top end at 8 top of pillar is placed with regular hexagon
Print to be measured 5, be aligned and contact at print 5 to be measured and the cartridge of upper iron core 2, lower iron core 3 and side iron core 4;4 B probes
16 are uniformly fixed on B-H magnetic signal sensor coil plate 6, positioned at the edge of B-H magnetic signal sensor coil plate 6;For examining
Survey the B voltage signal induced when print 5 to be measured is magnetized;Internal layer H coil 17 is wound on B-H magnetic signal sensor coil plate 6
On;Outer layer H coil 18 is wound on B-H magnetic signal sensor coil plate 6, be located at the outside of internal layer H coil 17 and with internal layer H coil
17 is vertical, for detecting the H voltage signal induced when print 5 to be measured is magnetized;The B-H magnetic signal sensor coil plate 6
It is placed in the center position of print 5 to be measured;Each cartridge of upper iron core 2, lower iron core 3 and side iron core 4 is nearby nested with one
A excitation winding 10;Excitation winding 10 be it is trapezoidal, enable plane where print 5 to be measured to place more magnet exciting coils;
Each excitation winding 10 includes input terminal 19, outlet terminal 20, first layer magnet exciting coil 11, second layer excitation
Coil 12 and third layer magnet exciting coil 13;First layer magnet exciting coil 11, second layer magnet exciting coil 12 and third layer magnet exciting coil 13
The number of turns of middle first layer magnet exciting coil 11 is minimum, and the number of turns of third layer magnet exciting coil 13 is most, and the number of turns is successively incremented by;Adjacent layer
Insulation processing is carried out between magnet exciting coil;The first layer magnet exciting coil 11, second layer magnet exciting coil 12 and third layer excitation wire
Circle 13 is wound on iron core, is in close contact iron core;First layer magnet exciting coil 11, second layer magnet exciting coil 12 and third layer excitation wire
Circle 13 is mounted on input terminal 19 and outlet terminal 20, between different exciting winding, same excitation winding different exciting coil
Between can be gone here and there and be connected by input terminal 19 and outlet terminal 20;
Excitation winding 10 shares seven kinds of connection types, it may be assumed that connect each excitation winding first layer magnet exciting coil 11,
Two layers of magnet exciting coil 12, third layer magnet exciting coil 13;Connect second layer magnet exciting coil 12, the third layer excitation of each excitation winding
Coil 13;Connect first layer magnet exciting coil 11, the third layer magnet exciting coil 13 of each excitation winding;Connect each excitation winding
First layer magnet exciting coil 11, second layer magnet exciting coil 12;Connect the first layer magnet exciting coil 11 of each excitation winding;Connection is each
The second layer magnet exciting coil 12 of excitation winding;Connect the third layer magnet exciting coil 13 of each excitation winding.
The iron core is formed using the ultra-thin silicon steel coil system of 0.05mm.
The working principle and process of the vertical three-phase flexibility wideband rotary magnetic characteristic measuring system of the utility model are:
Step 1: the position that print 5 to be measured is placed on pillar 8, and adjusts print 5 to be measured make print to be measured 5 with
It is aligned and contacts at the cartridge of upper iron core 2, lower iron core 3 and side iron core 4;
Step 2: selecting a kind of corresponding excitation winding connection type of test frequency, by corresponding input terminal 19 and goes out
Line terminals 20 are attached;
Step 3: measuring the inductance under frequency and excitation winding connection type at this time with inductance capacitance ohmmeter measuring instrument,
The capacitor needed at this time is calculated according to resonance equation, is matched using high voltage bearing noninductive capacitor 14, in reduction system
Exciting current;
Step 4: three phase sine alternating current is each led into all excitation windings in three directions, passes through LabVIEW
Test platform 15 issues single direction Alternating Current Excitation signal, after the amplification of power amplifier 21, controls three in excitation winding 10
The amplitude and phase of phase sinusoidal ac form the alternating magnetic field of single direction in print 5 to be measured in the planes;
Step 5: magnetic flux density and magnetic field intensity waveform, the voltage between the farther away two B probes 16 of detecting distance are observed
Signal detects the induced voltage signal of internal layer H coil 17 and outer layer H coil 18, stores magnetic characteristic data, improves excitation voltage letter
Number, until print 5 to be measured is saturated;
Step 6: after observing magnetic field saturation, slowly reduce excitation signal, treat test sample piece 5 and demagnetize;
Step 7: another single direction Alternating Current Excitation signal is issued by LabVIEW test platform 15, is put through overpower
After big device 21 amplifies, control the amplitude and phase of three phase sine alternating current in excitation winding 10,5 institute of print to be measured in the planes
The alternating magnetic field of another single direction is formed, step 5 and step 6 are repeated;
Step 8: three tunnel phases are issued by LabVIEW test platform 15 and cooperate excitation signal, by power amplifier 21
After amplification, the amplitude and phase of three phase sine alternating current in excitation winding 10 are controlled, forms rotating excitation field, weight in print 5 to be measured
Multiple step 5 and step 6 obtain under the effect of different exciting voltage, the magnetic induction intensity and magnetic field strength trajectory diagram of sample;
Step 9: replacement excitation winding connection type, repeat Step 3: Step 4: Step 5: Step 6: step 7 and
Step 8, until the magnetic characteristic detection under frequency and excitation mode needed for completing, obtains different frequency, the different exciting function of current
Under, the magnetic induction intensity and magnetic field strength trajectory diagram of sample, and then can be with computed losses.
The utility model does not address place and is suitable for the prior art.