CN201976018U - Power electronic rectifier transformer - Google Patents
Power electronic rectifier transformer Download PDFInfo
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- CN201976018U CN201976018U CN2011201013161U CN201120101316U CN201976018U CN 201976018 U CN201976018 U CN 201976018U CN 2011201013161 U CN2011201013161 U CN 2011201013161U CN 201120101316 U CN201120101316 U CN 201120101316U CN 201976018 U CN201976018 U CN 201976018U
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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 relates to a power electronic rectifier transformer. Three-phase or single-phase alternating current is inputted to the power electronic rectifier transformer, and direct current is outputted by the power electronic rectifier transformer. Each phase at an input side is formed by connecting a plurality of same power units in series so as to meet the needs of different voltage grades, and output is parallel-connection output of all three-phase or single-phase modules. Each power unit module comprises four parts, namely a full-control rectification circuit in an input grade, a middle inversion circuit, a high-frequency transformer and a non-control rectification circuit in an output grade. The power electronic rectifier transformer can replace the traditional rectifier transformer and back-grade rectification device, has the characteristics of low cost and improvement on electric energy quality of a distribution network, and can be widely applied to the fields of electrochemical electrolysis, traction, transmission, electroplating, charging, excitation, electrostatic dust removal and the like.
Description
Technical field
The utility model relates to the electronic power rectification transformer, belongs to power electronics in application on power system.
Background technology
Rectifier transformer is widely used in fields such as electrochemical electrolysis, traction, transmission, plating, charging, excitation, electrostatic precipitation, also is the key equipment in many industrial production.
Traditional rectifier transformer is the power transformer of rectifying installation.The characteristics of rectifying installation are former side's input ACs, and export direct current behind the secondary square tube over commutation original paper.Industrial rectification DC power supply major part is all obtained by rectifier transformer and rectifying installation by AC network.Since rectification become winding current be non-sine and contain a lot of high order harmonic components, in order to reduce harmonic pollution, improve power factor to electrical network, must improve the pulse number of rectifying installation, corresponding rectifier transformer design also becomes complicated.If adopt common rectifier transformer, also need to drop into power quality controlling device, increased the use cost of rectifier transformer.
The utility model adopts power electronic device to make up rectifier transformer, in to power quality controlling, has simplified design and has reduced cost.Along with power electronic device level and high frequency transformer Development of Materials, the electronic power rectification transformer will be brought into play indispensable effect in intelligent grid.
Summary of the invention
Technical problem:The electronic power rectification transformer that the utility model proposes, on the basis of the voltage transformation of realizing traditional rectifier transformer and rectifying device, voltage isolation, energy delivery function, design simplification by blocking the making and the installation of device, adapt to the demand of power distribution network more neatly.Utilize this device can obviously improve the quality of power supply of input side, reduce the pollution of harmonic wave, and greatly reduce cost electrical network.
Technical scheme:Electronic power rectification transformer of the present utility model is used for single-phase or three-phase circuit, and the power cell of electronic power rectification transformer is by input all controlled rectifier circuit, middle inverter circuit, high frequency transformer, control rectifying circuit not, and order is composed in series; Wherein, the input all controlled rectifier circuit by four IGBT promptly an IGBT, the 2nd IGBT, the 3rd IGBT, the 4th IGBT forms the H bridge, each IGBT also with a diode parallel connection that oppositely is connected, H bridge output parallel connection first electric capacity, second electric capacity; Promptly the 5th IGBT, the 6th IGBT, the 7th IGBT, the 8th IGBT form the H bridge to middle inverter circuit by four IGBT equally, each IGBT also with a diode parallel connection that oppositely is connected, the former limit that the output of H bridge is received high frequency transformer by resonant capacitance, the secondary of high frequency transformer connects not control rectifying circuit; Control rectifying circuit is not the i.e. H bridges of first diode, second diode, the 3rd diode, the 4th diode composition of four diodes, H bridge output dc-link capacitance in parallel.
When this transformer was used for three-phase or single phase circuit, every circuitry phase was all formed by a plurality of identical power unit cascades, to adapt to different input voltage grades; The three-phase alternating current of input side inserts with star fashion, and outlet side is formed in parallel by the output of all power cells of three-phase.
Beneficial effect:
1. device adopts modularized design, has simplified whole Unit Installation on the one hand, also is convenient to the adjusting module number on the other hand to adapt to the voltage of input side.
2. save the multi-pulse rectification transformer, in simplified design, reduced cost.
3. input side adopts the full-controlled rectifier device of cascade, can reduce the harmonic pollution of load-side to electrical network, improves power factor.
Description of drawings
Fig. 1 is single power cell schematic diagram; Fig. 2 is the whole schematic diagrams of three facies pattern electronic power rectification transformers.
Embodiment
Shown in Figure 2, every circuitry phase of three-phase input side is all formed by N identical power unit cascade, and the direct current outlet side is formed by the output-parallel of all power cells of three-phase.Each power cell primary structure comprises: input all controlled rectifier circuit, middle inverter circuit, high frequency transformer and control rectifying circuit not.The three-phase alternating current of input side inserts with star fashion, and wherein the N of every phase power cell input is connected in series, to adapt to different input voltage grades.The output of all power cells of three-phase is parallel on the direct current output bus capacitor.Shown in Figure 1, in each power cell, the input of inverter circuit 2 in the middle of the output termination of input all controlled rectifier circuit 1, the former limit of the output termination high frequency transformer 3 of middle inverter circuit 2, the secondary of high frequency transformer 3 connects the not input of control rectifying circuit 4, and control rectifying circuit 4 outputs are not connected in dc-link capacitance.
Promptly an IGBT (Q1), the 2nd IGBT (Q2), the 3rd IGBT (Q3), the 4th IGBT (Q4) form the H bridge to the input all controlled rectifier circuit 1 of each power cell by four IGBT, each IGBT also will with a diode parallel connection that oppositely is connected, H bridge output shunt capacitance first capacitor C 1, second capacitor C 2; Promptly the 5th IGBT (Q5), the 6th IGBT (Q6), the 7th IGBT (Q7), the 8th IGBT (Q8) and inverse parallel diode are formed the H bridge to middle inverter circuit 2 by four IGBT equally, the former limit that the output of H bridge is received high frequency transformer 3 by resonant capacitance C3, the secondary of high frequency transformer 3 connects not control rectifying circuit 4.Control rectifying circuit 4 is not that the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4 form the H bridge by four diodes, and its output is connected to dc-link capacitance C4.
The control aspect adopts phase-shifting carrier wave control input all controlled rectifier circuit 1, and its output dc voltage can steadily be regulated control apace, the input power factor scalable, and filter inductance makes the input current waveform sineization simultaneously, reduces harmonic current.Middle inverter circuit 2 adopts the high frequency square wave inversion, and uses soft switch technique.The effect of isolating realizes that by high frequency transformer the raising of frequency has reduced the volume and weight of transformer greatly.Last high-frequency ac pulse outputs to bus capacitor C4 through control rectifying circuit 4 not, uses for load.
Claims (2)
1. electronic power rectification transformer, be used for single-phase or three-phase circuit, it is characterized in that: the power cell of electronic power rectification transformer is not by input all controlled rectifier circuit (1), middle inverter circuit (2), high frequency transformer (3), control rectifying circuit (4) order is composed in series; Wherein, input all controlled rectifier circuit (1) is the i.e. IGBT(Q1 of four IGBT), the 2nd IGBT(Q2), the 3rd IGBT(Q3), the 4th IGBT(Q4) the H bridge formed, each IGBT also with a diode parallel connection that oppositely is connected, H bridge output parallel connection first electric capacity (C1), second electric capacity (C2); Middle inverter circuit (2) is i.e. the 5th IGBT(Q5 of four IGBT equally), the 6th IGBT(Q6), the 7th IGBT(Q7), the 8th IGBT(Q8) the H bridge formed, each IGBT also with a diode parallel connection that oppositely is connected, the H bridge is exported the former limit that is connected to high frequency transformer (3) by resonant capacitance (C3), and the secondary of high frequency transformer (3) is connected with not control rectifying circuit (4); Control rectifying circuit (4) is not four diodes
The i.e. H bridge formed of first diode (D1), second diode (D2), the 3rd diode (D3), the 4th diode (D4), a H bridge output dc-link capacitance (C4) in parallel.
2. according to the electronic power rectification transformer of claim 1 description, when it is characterized in that this transformer is used for three-phase or single phase circuit, every circuitry phase is all formed by a plurality of identical power unit cascades, to adapt to different input voltage grades; The three-phase alternating current of input side inserts with star fashion, and outlet side is formed in parallel by the output of all power cells of three-phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201013161U CN201976018U (en) | 2011-04-08 | 2011-04-08 | Power electronic rectifier transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201013161U CN201976018U (en) | 2011-04-08 | 2011-04-08 | Power electronic rectifier transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201976018U true CN201976018U (en) | 2011-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201013161U Expired - Fee Related CN201976018U (en) | 2011-04-08 | 2011-04-08 | Power electronic rectifier transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201976018U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130611A (en) * | 2011-04-08 | 2011-07-20 | 东南大学 | Power electronic rectification transformer |
| CN103762864A (en) * | 2014-02-26 | 2014-04-30 | 中国工程物理研究院流体物理研究所 | Multi-circuit high-voltage isolation power supply for series connection of semiconductor switches |
| CN105406722A (en) * | 2015-12-18 | 2016-03-16 | 北京理工大学 | High-voltage direct-current transformer connected with diode clamping power switch in series |
-
2011
- 2011-04-08 CN CN2011201013161U patent/CN201976018U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130611A (en) * | 2011-04-08 | 2011-07-20 | 东南大学 | Power electronic rectification transformer |
| CN103762864A (en) * | 2014-02-26 | 2014-04-30 | 中国工程物理研究院流体物理研究所 | Multi-circuit high-voltage isolation power supply for series connection of semiconductor switches |
| CN103762864B (en) * | 2014-02-26 | 2016-10-05 | 中国工程物理研究院流体物理研究所 | Multichannel high_voltage isolation power supply for semiconductor switch series connection |
| CN105406722A (en) * | 2015-12-18 | 2016-03-16 | 北京理工大学 | High-voltage direct-current transformer connected with diode clamping power switch in series |
| CN105406722B (en) * | 2015-12-18 | 2018-10-02 | 北京理工大学 | Diode clamp power switch series high voltage DC transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20150408 |
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| EXPY | Termination of patent right or utility model |