CN213906557U - Distributed low-harmonic high-frequency rectifying device - Google Patents
Distributed low-harmonic high-frequency rectifying device Download PDFInfo
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- CN213906557U CN213906557U CN202022712797.1U CN202022712797U CN213906557U CN 213906557 U CN213906557 U CN 213906557U CN 202022712797 U CN202022712797 U CN 202022712797U CN 213906557 U CN213906557 U CN 213906557U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a distributing type low harmonic high frequency rectifier device, include the phase-shifting transformer who comprises a primary winding and a plurality of secondary winding unit, secondary winding unit is including the Y type secondary winding and the star type secondary winding that have the phase difference, the output of Y type secondary winding links with first rectifier circuit's input electricity, the output of star type secondary winding links with second rectifier circuit's input electricity, first rectifier circuit's output with second rectifier circuit's output is connected and is linked with the load electricity through chopper circuit. The utility model adopts the above structure distributed low harmonic high frequency rectifier device, through the phase difference between two sets of windings, eliminated 5 times and 7 times harmonic, improved power factor, reduce the impact to the electric wire netting, realized the regulation of independent voltage promptly through chopper step-down mode simultaneously, realize the independent control load, reduced return circuits such as inverter transformer again, improved efficiency.
Description
Technical Field
The utility model relates to a high frequency switching power supply technique especially relates to a distributing type low harmonic high frequency rectifier device.
Background
With the development of society and the advancement of technology, high-frequency switching power supplies are widely applied to the fields of industrial equipment, power systems, transportation, military equipment and the like, and are used for converting an alternating current power supply into a stable direct current and supplying the converted direct current to a load. The multi-harmonic wave generated by the existing high-frequency rectifier easily causes power grid pollution, and the output end of the rectifier is uniformly connected with a plurality of loads, so that the control is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a distributing type low harmonic high frequency rectifier device through the phase difference between two sets of windings, has eliminated 5 times and 7 times of harmonic, has improved power factor, reduces the impact to the electric wire netting, has realized the regulation of independent voltage promptly through chopper step-down mode simultaneously, realizes the independent control load, has reduced return circuits such as inverter transformer again, has improved efficiency.
In order to achieve the above object, the utility model provides a distributed low harmonic high frequency rectifier device, include the phase-shifting transformer who comprises a primary winding and a plurality of secondary winding unit, secondary winding unit is including the Y type secondary winding and the star type secondary winding that have the phase difference, the output of Y type secondary winding links with first rectifier circuit's input electricity, the output of star type secondary winding links with second rectifier circuit's input electricity, first rectifier circuit's output with second rectifier circuit's output is connected and is linked with the load electricity through chopper circuit.
Preferably, the phase difference between the Y-type secondary winding and the star-type secondary winding is 30 °.
Preferably, the chopper step-down circuit comprises a switching tube and a protection diode connected between an emitter and a collector of the switching tube in anti-parallel, and a gate of the switching tube is electrically connected with an output end of the pulse width modulation circuit.
Preferably, the switch tube is an IGBT switch tube.
Preferably, the rectification circuit is a three-phase uncontrollable rectification bridge.
Therefore, the utility model adopts the above structure distributed low harmonic high frequency rectifier device, through the phase difference between two sets of windings, eliminated 5 times and 7 times harmonic, improved power factor, reduce the impact to the electric wire netting, realized the regulation of independent voltage promptly through chopper step-down mode simultaneously, realize the independent control load, reduced return circuits such as inverter transformer again, improved efficiency.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic diagram of a distributed low-harmonic high-frequency rectifying device according to an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed embodiments and the specific operation processes are provided, but the protection scope of the present invention is not limited to the present embodiment.
Fig. 1 is the embodiment of the utility model provides a schematic diagram of distributed low-harmonic high-frequency rectifying device, as shown in fig. 1, the utility model discloses a structure, include the phase-shifting transformer of constituteing by a primary winding and a plurality of secondary winding unit, the primary winding links with the output electricity of three-phase alternating current, secondary winding unit is including Y type secondary winding and the star type secondary winding that has the phase difference, and Y type secondary winding and star type secondary winding all with the primary winding magnetic coupling, the output of Y type secondary winding links with the input electricity of first rectifier circuit, the output of star type secondary winding links with the input electricity of second rectifier circuit, the output of first rectifier circuit with the output of second rectifier circuit is connected and is linked with the load electricity through chopper circuit. The phase difference between the Y-type secondary winding and the star-type secondary winding is 30 degrees. The relationship of the phase shift angle a of the phase shift transformer multiplied by the final number of pulses (pulse number) p: a p is 360 degrees, equivalent 12 pulse rectification can be obtained, output voltage is superposed through a wave superposition technology, and voltage waveform with high precision, less harmonic content and anti-grid waveform interference can be output after the wave superposition voltage is rectified, chopped and filtered; meanwhile, 5 th and 7 th harmonics can be eliminated through the phase difference between the windings, the input power factor is high and can be kept about 0.97, and a power factor compensation device is not needed.
The rectification circuit is a three-phase uncontrollable rectification bridge. Three-phase alternating current outputs direct current voltage through a three-phase rectifier bridge, then the continuous adjustable direct current voltage can be output through a chopper circuit, and finally the multipath continuous adjustable and isolated direct current voltage is realized.
Meanwhile, the chopper step-down circuit comprises a switching tube and a protection diode which is connected between an emitter electrode and a collector electrode of the switching tube in an anti-parallel mode, and a gate electrode of the switching tube is electrically connected with an output end of the pulse width modulation circuit. The switching tube is an IGBT switching tube, and the chopper step-down circuit has the advantages of high output voltage precision, low harmonic content, grid voltage interference resistance and the like.
Therefore, the utility model adopts the above structure distributed low harmonic high frequency rectifier device, through the phase difference between two sets of windings, eliminated 5 times and 7 times harmonic, improved power factor (power factor can reach 0.97), reduce the impact to the electric wire netting, realized independent voltage's regulation promptly through chopper step-down mode simultaneously, realize the independent control load, reduced return circuits such as inverter transformer again, improved efficiency.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solution of the present invention can still be modified or replaced by other equivalent means, and the modified technical solution can not be separated from the spirit and scope of the technical solution of the present invention.
Claims (5)
1. A distributed low-harmonic high-frequency rectifying device is characterized in that: the phase-shifting transformer comprises a primary winding and a plurality of secondary winding units, wherein each secondary winding unit comprises a Y-shaped secondary winding and a star-shaped secondary winding with phase difference, the output end of the Y-shaped secondary winding is electrically connected with the input end of a first rectifying circuit, the output end of the star-shaped secondary winding is electrically connected with the input end of a second rectifying circuit, and the output end of the first rectifying circuit is connected with the output end of the second rectifying circuit and is electrically connected with a load through a chopper circuit.
2. The distributed low-harmonic high-frequency rectification device according to claim 1, characterized in that: the phase difference between the Y-type secondary winding and the star-type secondary winding is 30 degrees.
3. The distributed low-harmonic high-frequency rectification device according to claim 1, characterized in that: the chopper step-down circuit comprises a switching tube and a protection diode connected between an emitter and a collector of the switching tube in an anti-parallel mode, and a gate pole of the switching tube is electrically connected with an output end of the pulse width modulation circuit.
4. The distributed low-harmonic high-frequency rectification device according to claim 3, characterized in that: the switch tube is an IGBT switch tube.
5. The distributed low-harmonic high-frequency rectification device according to claim 1, characterized in that: the rectification circuit is a three-phase uncontrollable rectification bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022712797.1U CN213906557U (en) | 2020-11-20 | 2020-11-20 | Distributed low-harmonic high-frequency rectifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022712797.1U CN213906557U (en) | 2020-11-20 | 2020-11-20 | Distributed low-harmonic high-frequency rectifying device |
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| CN213906557U true CN213906557U (en) | 2021-08-06 |
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| CN202022712797.1U Active CN213906557U (en) | 2020-11-20 | 2020-11-20 | Distributed low-harmonic high-frequency rectifying device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113708649A (en) * | 2021-09-10 | 2021-11-26 | 湖北春田电工技术有限公司 | High-power multi-output adjustable intermediate frequency power supply |
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2020
- 2020-11-20 CN CN202022712797.1U patent/CN213906557U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113708649A (en) * | 2021-09-10 | 2021-11-26 | 湖北春田电工技术有限公司 | High-power multi-output adjustable intermediate frequency power supply |
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