CN200989923Y - AC DC superposed magnetic performance testing device - Google Patents
AC DC superposed magnetic performance testing device Download PDFInfo
- Publication number
- CN200989923Y CN200989923Y CN 200620074482 CN200620074482U CN200989923Y CN 200989923 Y CN200989923 Y CN 200989923Y CN 200620074482 CN200620074482 CN 200620074482 CN 200620074482 U CN200620074482 U CN 200620074482U CN 200989923 Y CN200989923 Y CN 200989923Y
- Authority
- CN
- China
- Prior art keywords
- direct current
- alternating current
- circuit
- loop
- transformer
- Prior art date
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model discloses an alternating current and direct current overlaying magnetic characteristics detecting device which comprises an alternating current circuit and a direct current circuit. The direct current has a direct current adjusting power. The utility model is characterized in that two transformers are arranged between the alternating current circuit and the direct current circuit; the primary windings of the two transformers are connected in series reversely with the alternating current circuit while the secondary windings are connected in series reversely with the direct current circuit and the inductance quantity of the primary winding are equal and the inductance quantity of the secondary windings are equal as well. The alternating current and direct current overlaying magnetic characteristics detecting device can separate the obstruction of the alternating current signal and the direct current signal, which greatly lowers the detecting error, and ensures the accuracy of the detecting result. The utility model is suitable for detecting the inductance quantity of the magnetic material under the combined working of alternating current and the direct current.
Description
Technical field
The utility model relates to a kind of proving installation.Be the proving installation that is used for measuring the magnetic material inductance value under the acting in conjunction of AC and DC magnetic field specifically.
Background technology
At present, under D.C. magnetic field and AC magnetic field acting in conjunction, the device that is used for measuring the magnetic element inductance value all is traditional alternating current-direct current stack proving installation.As shown in Figure 1, this device contains inductor L1, potentiometer R1, capacitor C, secohmmeter L, direct supply E, reometer A and detected element L
0, direct supply E wherein, potentiometer R1, inductor L1, detected element L
0A is in series successively with reometer, forms a DC loop.Capacitor C, detected element L
0L is serially connected with secohmmeter, constitutes an ac circuit.During measurement, isolate the interference of AC signal, come of the interference of isolated DC signal the inductance instrument by capacitor C to direct supply E by inductor L1.Though the magnetic element inductance value that adopts this device to can be implemented under D.C. magnetic field and the AC magnetic field acting in conjunction is measured.But when DC current is excessive, can make that inductor L1 is saturated, inductance value descends, thereby cause its induction reactance to descend, the isolation performance of AC signal is reduced.And capacitor C can only suppress in the DC loop low-frequency interference signal, can not suppress the high-frequency interferencing signal in the DC loop.Therefore, the traditional test device not only can not be isolated the phase mutual interference of alternating current-direct current signal fully, has also limited the test frequency scope.Especially when test frequency is lower or higher, also can increase test error.
The utility model content
Problem to be solved in the utility model provides a kind of alternating current-direct current stack magnetic characteristic proving installation.This alternating current-direct current stack magnetic characteristic proving installation, can isolate fully the phase mutual interference of alternating current-direct current signal, greatly reduce test error, guarantee that measurement result is accurate.
For addressing the above problem, the utility model is taked following technical scheme:
Alternating current-direct current stack magnetic characteristic proving installation of the present utility model comprises ac circuit and DC loop.The DC adjustment power supply is arranged in the DC loop wherein.Be characterized in that two transformers are arranged between ac circuit and DC loop, the elementary winding of these two transformers is and oppositely is serially connected in the ac circuit, their secondary winding then is oppositely and is serially connected in the DC loop, and their elementary winding electric sensibility reciprocal equates, the secondary winding inductance value also equates.
Wherein, said DC adjustment power supply is formed by direct supply, potentiometer and reometer serial connection.
Take such scheme, have the following advantages:
Because the utility model is provided with two transformers between its ac circuit and DC loop, the elementary winding of these two transformers is and oppositely is serially connected in the ac circuit, their secondary winding then is oppositely and is serially connected in the DC loop, and their elementary winding electric sensibility reciprocal equates, the secondary winding inductance value also equates.It is zero that the feasible undesired signal that is produced in transformer other end loop by the magnetic induction that variation produced of AC magnetic field or D.C. magnetic field is cancelled out each other, thereby solved of the mutually mutual interference of AC and DC signal to direct supply and secohmmeter, greatly reduce test error, guaranteed the accurate of measurement result.
Description of drawings
Traditional alternating current-direct current stack magnetic characteristic proving installation synoptic diagram in Fig. 1 background technology;
Fig. 2 is an alternating current-direct current stack magnetic characteristic proving installation synoptic diagram of the present utility model.
Embodiment
As shown in Figure 2, alternating current-direct current stack magnetic characteristic proving installation of the present utility model contains transformer T1 and transformer T2.The elementary winding L 1 of this two transformer and the inductance value of L2 equate, the inductance value of secondary winding L3 and L4 also equates.Be oppositely between elementary winding L 1 one ends of transformer T1 and elementary winding L 2 one ends of transformer T2 and be serially connected, be serially connected with secohmmeter L between their the elementary winding L 1 and the L2 other end, thereby form an ac circuit by the elementary winding L 1 of transformer T1, elementary winding L 2 and the secohmmeter L of transformer T2.
Also be oppositely between secondary winding L4 one end of the secondary winding L3 of transformer T1 and transformer T2 and be serially connected, be serially connected with the DC adjustment power supply between their the secondary winding L3 and the L4 other end, thereby form a DC loop by secondary winding L4 and the DC adjustment power supply of secondary winding L3, the transformer T2 of transformer T1.DC adjustment power supply wherein is in series by direct supply E, potentiometer R1 and reometer A.
During measurement, the magnetic core that a transformer is arranged among transformer T1 and the transformer T2 is a detected element.
Claims (2)
1. alternating current-direct current stack magnetic characteristic proving installation comprises ac circuit and DC loop; The DC adjustment power supply is arranged in the DC loop wherein; It is characterized in that having between ac circuit and DC loop transformer (T1) and transformer (T2), the elementary winding (L1) of these two transformers and elementary winding (L2) are and oppositely are serially connected in the ac circuit, their secondary winding (L3) and secondary winding (L4) then are oppositely and are serially connected in the DC loop, and their elementary winding (L1) and elementary winding (L2) inductance value equates, secondary winding (L3) is also equal with secondary winding (L4) inductance value.
2. alternating current-direct current stack magnetic characteristic proving installation according to claim 1 is characterized in that said DC adjustment power supply is formed by direct supply (E), potentiometer (R1) and reometer (A) serial connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620074482 CN200989923Y (en) | 2006-06-24 | 2006-06-24 | AC DC superposed magnetic performance testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620074482 CN200989923Y (en) | 2006-06-24 | 2006-06-24 | AC DC superposed magnetic performance testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200989923Y true CN200989923Y (en) | 2007-12-12 |
Family
ID=38940960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620074482 Expired - Fee Related CN200989923Y (en) | 2006-06-24 | 2006-06-24 | AC DC superposed magnetic performance testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200989923Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778658A (en) * | 2011-05-11 | 2012-11-14 | 磁量生技股份有限公司 | Alternating current (AC) magnetic conductivity measurement device and AC magnetic conductivity measurement method |
| CN108008173A (en) * | 2016-10-28 | 2018-05-08 | 致茂电子股份有限公司 | Alternating current-direct current is superimposed test device |
-
2006
- 2006-06-24 CN CN 200620074482 patent/CN200989923Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778658A (en) * | 2011-05-11 | 2012-11-14 | 磁量生技股份有限公司 | Alternating current (AC) magnetic conductivity measurement device and AC magnetic conductivity measurement method |
| CN102778658B (en) * | 2011-05-11 | 2016-03-09 | 磁量生技股份有限公司 | A kind of ac permeability measuring equipment and method thereof |
| CN108008173A (en) * | 2016-10-28 | 2018-05-08 | 致茂电子股份有限公司 | Alternating current-direct current is superimposed test device |
| CN108008173B (en) * | 2016-10-28 | 2020-02-18 | 致茂电子股份有限公司 | Alternating current-direct current superposition testing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106291123B (en) | A kind of method directly measuring magnetic cell winding loss | |
| CN203672938U (en) | AC-DC universal leakage-current sensor | |
| CN109283399B (en) | Method for measuring loss of high-frequency magnetic element winding | |
| CN106199118B (en) | Capacitor voltage-dividing type zero sequence voltage transformer with power output | |
| CN106645863A (en) | Voltage sensor based on dual fluxgates | |
| CN103227045A (en) | Electronic current transformer | |
| CN100578233C (en) | Electronic veltage transformer of capacitor or resistance series hollow coil | |
| CN109596893A (en) | A kind of high-frequency transformer coils the number of turns test method | |
| CN102411135A (en) | Device and method for testing electrical fast transient/burst (EFT/B) immunity of electric energy meter | |
| CN200989923Y (en) | AC DC superposed magnetic performance testing device | |
| CN201464607U (en) | Detection circuit for partial discharge of capacitor | |
| CN102426909A (en) | Direct current resisting transformer based on composite magnetic core and manufacturing method thereof | |
| CN110993273A (en) | Two-stage excitation high-voltage proportion standard device and error compensation method | |
| CN202189670U (en) | Combined current converter | |
| CN102739066B (en) | Inductive current-to-voltage converter and method for measuring high frequency current | |
| CN203164408U (en) | Current transformer error testing circuit | |
| Prochazka et al. | Impulse current transformer with a nanocrystalline core | |
| CN202887569U (en) | Transformation simulation device of transformer winding | |
| CN200989916Y (en) | Capacitance or resistance series hollow coil electronic voltage multual inductor | |
| CN101872006B (en) | Periodic non-sinusoidal wave reference of electronic voltage transformer with voltage booster | |
| CN105974349B (en) | A kind of measuring method of current transformer tracking accuracy | |
| CN108008173A (en) | Alternating current-direct current is superimposed test device | |
| CN208224351U (en) | One kind being based on Hall magnetic balance type voltage sensor | |
| TWI386655B (en) | Method of Measuring Equivalent Circuit Components for Transformers | |
| CN107424815B (en) | A kind of two-stage current transformer compensated using circle is subtracted |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071212 |