CN210608910U - Device for restraining direct-current high-frequency current by using amorphous magnetic ring annular magnetic field - Google Patents
Device for restraining direct-current high-frequency current by using amorphous magnetic ring annular magnetic field Download PDFInfo
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- CN210608910U CN210608910U CN201921467598.XU CN201921467598U CN210608910U CN 210608910 U CN210608910 U CN 210608910U CN 201921467598 U CN201921467598 U CN 201921467598U CN 210608910 U CN210608910 U CN 210608910U
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- 230000000452 restraining effect Effects 0.000 title claims description 3
- 230000007935 neutral effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
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Abstract
The utility model discloses an utilize amorphous magnetic ring toroidal magnetic field to restrain device of direct current high frequency current, including three-phase rectifier and three-phase dc-to-ac converter, three-way alternating current is connected to the input of three-phase rectifier, and the output of three-phase rectifier divide into DM generating line, DP generating line and DN generating line three routes output, and the input of three-phase dc-to-ac converter is all connected to DM generating line, still be equipped with the branch road on the DP generating line, be connected with electric capacity C1 on the branch road, amorphous magnetic ring P1 is connected to electric capacity C1's the other end, and the DM generating line is connected to amorphous magnetic ring P1's the other end, still be equipped with the branch road on the DN generating line, the utility model discloses increase the amorphous magnetic ring on direct current system neutral bus, utilize the high frequency signal inhibit effect of amorphous magnetic ring.
Description
Technical Field
The utility model relates to an electromagnetic control technical field specifically is an utilize amorphous magnetic ring toroidal magnetic field to restrain device of direct current high frequency current.
Background
The three-level shore power supply adopting the high-frequency switching power supply technology adopts an AC-DC-AC mode to realize the accurate control of output voltage and frequency, the quality of the DC voltage in the DC loop has great influence on the control accuracy of the output voltage and output harmonic waves, the quality of the DC voltage in the DC loop is improved, the ripple content of the DC voltage is reduced, the waveform quality of the AC voltage at the output side can be effectively improved, and the control accuracy is improved.
Disclosure of Invention
An object of the utility model is to provide an utilize amorphous magnetic ring toroidal magnetic field to restrain direct current high frequency current's device to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the input end of the three-phase rectifier is connected with three-line alternating current, the output end of the three-phase rectifier is divided into three paths of outputs of a DM bus, a DP bus and a DN bus, the DM bus, the DP bus and the DN bus are all connected with the input end of the three-phase inverter, a branch is further arranged on the DP bus, a capacitor C1 is connected to the branch, the other end of the capacitor C1 is connected with an amorphous magnetic ring P1, the other end of the amorphous magnetic ring P1 is connected with the DM bus, a branch is further arranged on the DN bus, a capacitor C2 is connected to the branch, the other end of the capacitor C2 is connected with an amorphous magnetic ring P2, and the other end of the amorphous magnetic ring P2 is connected with the DM bus.
As a further technical solution of the present invention: and the DM bus is connected to the middle point end of the three-phase rectifier.
As a further technical solution of the present invention: and the DN bus is connected to the negative end of the three-phase rectifier.
As a further technical solution of the present invention: and the DP bus is connected to the positive end of the three-phase rectifier.
As a further technical solution of the present invention: the three-phase inverter outputs a, b and c three-phase alternating current.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses increase the amorphous magnetic ring on direct current system neutral bus, utilize the high frequency signal inhibit action of amorphous magnetic ring, eliminate the high frequency alternating current component on the direct current bus, improve the direct current voltage quality of system.
Drawings
Fig. 1 is an electrical schematic diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1: referring to fig. 1, a device for suppressing a dc high-frequency current by using an amorphous magnetic ring toroidal magnetic field includes a three-phase rectifier and a three-phase inverter, an input end of the three-phase rectifier is connected to a three-line ac, an output end of the three-phase rectifier is divided into three outputs of a DM bus, a DP bus and a DN bus, the DM bus, the DP bus and the DN bus are all connected to an input end of the three-phase inverter, the DP bus is further provided with a branch, a capacitor C1 is connected to the branch, the other end of the capacitor C1 is connected to an amorphous magnetic ring P1, the other end of the amorphous magnetic ring P1 is connected to the DM bus, the DN bus is further provided with a branch, the branch is connected to a capacitor C2, the other end of the capacitor C2 is. According to the design, after the amorphous magnetic ring is added at the DM end of the direct current bus, the high-frequency alternating current component on the direct current bus passes through the electromagnetic induction between the magnetic rings, so that induced currents in opposite directions (phases) are formed on the direct current bus, and the alternating current component flowing through the direct current bus is greatly reduced after two currents with completely opposite phases are superposed, so that the purpose of filtering the alternating current component is achieved; because the amorphous magnetic ring has very wide response bandwidth, the alternating current component in a direct current system can be filtered in a large range, the alternating current component in a direct current bus is greatly reduced, and the voltage quality of the direct current bus is improved.
Example 2: on the basis of the embodiment 1, the DM bus is connected to the middle point end of the three-phase rectifier. The DN bus is connected with the negative end of the three-phase rectifier. The DP bus is connected to the positive terminal of the three-phase rectifier. The three-phase inverter outputs a, b and c three-phase alternating currents, and the output voltage stability is strong.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The device for restraining direct-current high-frequency current by using the amorphous magnetic ring annular magnetic field comprises a three-phase rectifier and a three-phase inverter, wherein the input end of the three-phase rectifier is connected with three-line alternating current, the output end of the three-phase rectifier is divided into three paths of outputs of a DM bus, a DP bus and a DN bus, and the DM bus, the DP bus and the DN bus are all connected with the input end of the three-phase inverter.
2. The apparatus as claimed in claim 1, wherein the DM bus is connected to a middle point of the three-phase rectifier.
3. The device as claimed in claim 1, wherein the DN bus is connected to a negative terminal of the three-phase rectifier.
4. The device as claimed in claim 1, wherein the DP bus is connected to the positive terminal of the three-phase rectifier.
5. The device for suppressing direct-current high-frequency current by using the amorphous magnetic ring toroidal magnetic field as claimed in any one of claims 1 to 4, wherein the three-phase inverter outputs a, b and c three-phase alternating currents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921467598.XU CN210608910U (en) | 2019-09-05 | 2019-09-05 | Device for restraining direct-current high-frequency current by using amorphous magnetic ring annular magnetic field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921467598.XU CN210608910U (en) | 2019-09-05 | 2019-09-05 | Device for restraining direct-current high-frequency current by using amorphous magnetic ring annular magnetic field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210608910U true CN210608910U (en) | 2020-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921467598.XU Expired - Fee Related CN210608910U (en) | 2019-09-05 | 2019-09-05 | Device for restraining direct-current high-frequency current by using amorphous magnetic ring annular magnetic field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210608910U (en) |
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2019
- 2019-09-05 CN CN201921467598.XU patent/CN210608910U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200522 |
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| CF01 | Termination of patent right due to non-payment of annual fee |