CN210807094U - DC power supply with arc extinguishing circuit - Google Patents
DC power supply with arc extinguishing circuit Download PDFInfo
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- CN210807094U CN210807094U CN201921275549.6U CN201921275549U CN210807094U CN 210807094 U CN210807094 U CN 210807094U CN 201921275549 U CN201921275549 U CN 201921275549U CN 210807094 U CN210807094 U CN 210807094U
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Abstract
A direct current power supply with an arc extinguishing circuit comprises an AC input end, a PWM pulse module and a control circuit, wherein the AC input end is used for switching on three-phase alternating current, and the PWM pulse module is connected to the AC input end and used for stabilizing the output of the power supply; the PWM pulse module is connected with a rectification filtering module, the rectification filtering module is also connected with an oscillation arc extinguishing module, the oscillation arc extinguishing module is used for eliminating electric arcs in a power supply, the oscillation arc extinguishing module comprises a direct current filter, and an inductor and a capacitor which are connected in series are arranged on the direct current filter; the PWM module is provided with a PWM control module and an output control module which are matched with the PWM pulse module, the oscillation arc extinguishing module is provided with a DC output end, and the DC output end is used for connecting a load; the arc extinguishing circuit in the power supply is improved, optimized parameters can be automatically selected, the safety factor of the power supply is improved, and electric arcs are avoided in the power supply process.
Description
The technical field is as follows:
the utility model relates to a DC power supply with arc extinguishing circuit.
Background art:
arcing is a gas discharge phenomenon, a transient spark generated by the passage of current through some medium. An arc is a self-sustaining gaseous conductor whose majority of carriers are electrons generated by primary electron emission. The surface of the contact metal is subjected to electron escape due to primary electron emission, and gas atoms or molecules in the gap are ionized to generate electrons and ions. In addition, electron or ion bombardment of the emission surface can cause secondary electron emission, and when the ion concentration in the gap is sufficiently large, the gap is electrically broken down and arcing occurs.
In the working process of each type of electrical equipment, as the wiring is not standardized or careless and careless leakage occurs in the operation process, an electric arc phenomenon occurs, the normal use of the electrical equipment is influenced, and certain danger is caused, so that the requirement on the performance of the power supply is high.
In the process of supplying power by the conventional power supply, electrical equipment and an electrical circuit can be protected by an arc extinguishing circuit arranged in the power supply; the parameters and the output power of the arc extinguishing circuit in the traditional power supply need to be set by a user, so that the traditional power supply is inconvenient to use and poor in practicability.
The utility model has the following contents:
the embodiment of the utility model provides a DC power supply with arc extinguishing circuit has improved the inside arc extinguishing circuit of power, can select the optimization parameter automatically, has promoted the factor of safety of power, guarantees to avoid appearing electric arc in power supply process, has solved the problem that exists among the prior art.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:
a direct current power supply with an arc extinguishing circuit comprises an AC input end, a PWM pulse module and a control circuit, wherein the AC input end is used for switching on three-phase alternating current, and the PWM pulse module is connected to the AC input end and used for stabilizing the output of the power supply; the PWM pulse module is connected with a rectification filtering module, the rectification filtering module is also connected with an oscillation arc extinguishing module, the oscillation arc extinguishing module is used for eliminating electric arcs in a power supply, the oscillation arc extinguishing module comprises a direct current filter, and an inductor and a capacitor which are connected in series are arranged on the direct current filter; and the PWM module is provided with a PWM control module and an output control module which are matched with the PWM pulse module, and the oscillation arc extinguishing module is provided with a DC output end which is used for connecting a load.
And a three-phase rectification and filtering module is arranged on the AC input end and is a three-phase rectifier bridge.
An inductor and a capacitor are arranged in parallel at the AC input end and the PWM pulse module.
The PWM pulse module comprises 4 IGBTs connected in parallel.
And a transformer is arranged between the PWM pulse module and the rectifying and filtering module.
The PWM control module is provided with a primary current detector, and the output control module is provided with a secondary current detector.
The working efficiency of the transformer is 20 KHz.
And a direct-current voltage detector is arranged between the output control module and the vibration arc extinguishing module.
The utility model adopts the structure, the three-phase alternating current is switched on through the AC input end, and the load is connected through the DC output end to drive the load to work; through the mutual matching of a plurality of functional modules in the power supply, electric arcs are eliminated, and the safe work of the power supply is realized; the electric parameters in the power supply are detected through the current detector and the voltage detector in the power supply, and the power supply has the advantages of simple structure, safety and reliability.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the oscillating arc extinguishing module of the present invention.
The specific implementation mode is as follows:
in order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.
As shown in fig. 1-2, a dc power supply with an arc extinguishing circuit includes an AC input terminal for switching on three-phase AC power, and a PWM pulse module connected to the AC input terminal for stabilizing an output of the power supply; the PWM pulse module is connected with a rectification filtering module, the rectification filtering module is also connected with an oscillation arc extinguishing module, the oscillation arc extinguishing module is used for eliminating electric arcs in a power supply, the oscillation arc extinguishing module comprises a direct current filter, and an inductor and a capacitor which are connected in series are arranged on the direct current filter; and the PWM module is provided with a PWM control module and an output control module which are matched with the PWM pulse module, and the oscillation arc extinguishing module is provided with a DC output end which is used for connecting a load.
And a three-phase rectification and filtering module is arranged on the AC input end and is a three-phase rectifier bridge.
An inductor and a capacitor are arranged in parallel at the AC input end and the PWM pulse module.
The PWM pulse module comprises 4 IGBTs connected in parallel.
And a transformer is arranged between the PWM pulse module and the rectifying and filtering module.
The PWM control module is provided with a primary current detector, and the output control module is provided with a secondary current detector.
The working efficiency of the transformer is 20 KHz.
And a direct-current voltage detector is arranged between the output control module and the vibration arc extinguishing module.
The embodiment of the utility model provides an in the operating principle of DC power supply with arc extinguishing circuit is: the oscillation arc extinguishing module is additionally arranged in the power supply to process electric arcs, parameters and output power in the oscillation arc extinguishing module are automatically adjusted, optimized parameters are automatically obtained, the arc extinguishing effect is enabled to be optimal, the safety factor is improved, and the safety is improved.
When the power supply is used, three-phase alternating current is connected through the AC input end, the direct current power supply enters a working state, the alternating current is converted into direct current for output through the processing of each functional module in the power supply, and the load is connected through the DC output end to act; in the power supply, the oscillation arc extinguishing module is a core component, so that the safety can be ensured in the working process of the direct-current power supply, the arc phenomenon is eliminated, and the occurrence of electrical accidents is avoided; and the electrical parameters can be automatically adjusted, so that the probability of the occurrence of the arc phenomenon can be effectively reduced, and the service life of the direct-current power supply is prolonged.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (8)
1. The utility model provides a DC power supply with arc extinguishing circuit which characterized in that: the power supply comprises an AC input end, a PWM pulse module and a power supply controller, wherein the AC input end is used for switching on three-phase alternating current, and the PWM pulse module is connected to the AC input end and used for stabilizing the output of a power supply; the PWM pulse module is connected with a rectification filtering module, the rectification filtering module is also connected with an oscillation arc extinguishing module, the oscillation arc extinguishing module is used for eliminating electric arcs in a power supply, the oscillation arc extinguishing module comprises a direct current filter, and an inductor and a capacitor which are connected in series are arranged on the direct current filter; and the PWM module is provided with a PWM control module and an output control module which are matched with the PWM pulse module, and the oscillation arc extinguishing module is provided with a DC output end which is used for connecting a load.
2. The dc power supply with an arc extinguishing circuit according to claim 1, wherein: and a three-phase rectification and filtering module is arranged on the AC input end and is a three-phase rectifier bridge.
3. The dc power supply with an arc extinguishing circuit according to claim 1, wherein: an inductor and a capacitor are arranged in parallel at the AC input end and the PWM pulse module.
4. The dc power supply with an arc extinguishing circuit according to claim 1, wherein: the PWM pulse module comprises 4 IGBTs connected in parallel.
5. The dc power supply with an arc extinguishing circuit according to claim 1, wherein: and a transformer is arranged between the PWM pulse module and the rectifying and filtering module.
6. The dc power supply with an arc extinguishing circuit according to claim 1, wherein: the PWM control module is provided with a primary current detector, and the output control module is provided with a secondary current detector.
7. The dc power supply with an arc extinguishing circuit according to claim 5, wherein: the working efficiency of the transformer is 20 KHz.
8. The dc power supply with an arc extinguishing circuit according to claim 1, wherein: and a direct-current voltage detector is arranged between the output control module and the vibration arc extinguishing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921275549.6U CN210807094U (en) | 2019-08-07 | 2019-08-07 | DC power supply with arc extinguishing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921275549.6U CN210807094U (en) | 2019-08-07 | 2019-08-07 | DC power supply with arc extinguishing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210807094U true CN210807094U (en) | 2020-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921275549.6U Active CN210807094U (en) | 2019-08-07 | 2019-08-07 | DC power supply with arc extinguishing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210807094U (en) |
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2019
- 2019-08-07 CN CN201921275549.6U patent/CN210807094U/en active Active
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