CN202353464U - Three-level boost soft switching converter circuit - Google Patents
Three-level boost soft switching converter circuit Download PDFInfo
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- CN202353464U CN202353464U CN2011203791478U CN201120379147U CN202353464U CN 202353464 U CN202353464 U CN 202353464U CN 2011203791478 U CN2011203791478 U CN 2011203791478U CN 201120379147 U CN201120379147 U CN 201120379147U CN 202353464 U CN202353464 U CN 202353464U
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- switching tube
- resonance
- capacitors
- resonant
- voltage
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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
Abstract
The utility model relates to a three-level boost soft switching converter circuit which comprises an input filter inductor, power switch tubes, diodes, output filter capacitors, a resonance inductor, resonance capacitors and a load. The input filter inductor filters input current, stores energy, and supplies energy to the load; the output filter capacitors are voltage dividing capacitors with the same capacity and half of output voltage; and the resonance inductor and the resonance capacitors form a resonance circuit so as to achieve zero voltage switching-on and zero voltage switching-off of the switch tubes, therefore the loss of the switch tubes is reduced, the system efficiency is improved, and application fields are broadened.
Description
One, technical field
The utility model relates to a kind of combination phase shifting control technology; Through L, thereby C forms the research that resonant circuit is realized three level Boost switch converters of soft switch technique, and the efficient of having improved switch converters in the past is low; Problems such as switch stress is big make that the application scenario of converter is more extensive.
Two, background technology
The development of power electronic technology be unable to do without the development of power device.Various high speeds, full-control type power device successively come out after 1970, for the research of various circuit topologies lays the foundation.The single tube DC converter is used more in the Switching Power Supply of middle low power because control mode and circuit are simple; Though it is half that the voltage stress of three traditional level Boost switch converters switching tubes reduces than two level; Corresponding on-state loss and switching loss reduce to some extent; But when switching frequency was high, these losses were still considerable, and electromagnetic interference noise is also serious further along with the increase of switching frequency.Therefore proposed soft switch technique, it makes the tri-level switch converter when realizing three level functions, has improved the operating state of device for power switching, has reduced switching loss, has improved the efficient of system.
Three, summary of the invention
Goal of the invention:
In order to reduce the switching loss of switch converters, improve system effectiveness, improve electromagnetic interference, improve system reliability, the method for designing of Novel Soft Switching tri-level switch converter has been proposed.
Key technology:
The realization of this method combines the phase shifting control technology, adds L, C resonant tank, realizes that the no-voltage of switching tube is opened and the no-voltage shutoff, thereby reduces switching loss, improves system effectiveness.
The concrete realization:
In this design switching tube S1, S2 two ends respectively parallel connection an electric capacity and a diode, and introduced a resonant inductance Lr.The concrete connected mode of circuit: input filter inductance Lf one termination power is anodal; The other end meets diode D3 and switching tube S1 respectively; S1 and switching tube S2 series connection back links to each other with power cathode, D3 be connected on the power cathode after load RL, diode D4 connect, output filter capacitor Cf1 one terminates at the negative electrode of diode D3; It is parallelly connected after the other end links to each other with filter capacitor Cf2 with load RL; The two ends of resonant inductance Lr are connected on switching tube S1 respectively, the point midway of the mid point of S2 and output filter capacitor Cf1, Cf2, switching tube S1 two ends parallel connection one resonant capacitance Cr1 and diode D1; Switching tube S2 two ends parallel connection one resonant capacitance Cr2 and diode D2, the electric capacity at resonant inductance Lr and switching tube two ends constitutes resonant tank.Because it is capacitor-clamped that the switching tube two ends have, therefore can realize the no-voltage shutoff, when resonant inductance and electric capacity generation resonance, the charging of the electric capacity of a switching tube, the capacitor discharge of another switching tube, when discharge was complete, diode current flow realized that no-voltage is open-minded.
Technique effect:
This research is through adding resonant tank; Make switching tube realize that no-voltage is opened and the no-voltage shutoff, thereby make converter on the basis of reservation three level advantages, reduced the loss of switching tube; Improve the efficient of converter, and then widened the application of converter.
Four, description of drawings
Fig. 1 is the circuit structure of this research, and Vin is the converter input voltage among the figure, and Lf is a filter inductance, and S1, S2 are power switch pipes, and Cr1, Cr2 are resonant capacitances, and Lr is a resonant inductance, D1, and D2, D3, D4 are diodes, and Cf1, Cf2 are output capacitances, and RL is load.During switching tube S1 conducting, the filter inductance electric current reduces, and the resonant inductance electric current increases, and equals the resonant inductance electric current to a certain moment filter inductance electric current, and the electric current that flow through diode D3 this moment is a zero to cut-off; Turn-off S1,, make switching tube realize the no-voltage shutoff because the switching tube two ends is capacitor-clamped; Switching tube S1 closes and has no progeny, diode D3 conducting, resonant inductance and switching tube shunt capacitance generation resonance at this moment; Make capacitor C f1 charging, capacitor C f2 discharge is after the discharge fully; The conducting of diode D2 nature, switching tube S2 is that no-voltage is open-minded; After S2 opened, diode D4 bears back-pressure to be ended, and applies a reverse voltage on the resonant inductance, and the resonant inductance current reversal increases, and the filter inductance electric current reduces slightly; When on-off switching tube S2, diode D4 conducting, capacitor C r1 discharge, capacitor C r2 charging, when Cr discharges when complete, the conducting of diode D1 nature, this moment, switching tube S1 was that no-voltage is open-minded.
Claims (2)
1. a level Boost soft switch transducer circuit is made up of input filter inductance, power switch pipe, diode, output filter capacitor, resonant inductance, resonant capacitance and load; It is characterized in that at switching tube two ends shunt capacitance and diode, between two switching tube mid points and two output capacitance mid points, introduce filter inductance.
2. three level Boost soft switch transducer circuit according to claim 1 is characterized in that: the shunt capacitance at resonant inductance and switching tube two ends constitutes resonant tank, and the no-voltage of realization switching tube is opened with no-voltage and turn-offed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203791478U CN202353464U (en) | 2011-09-24 | 2011-09-24 | Three-level boost soft switching converter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203791478U CN202353464U (en) | 2011-09-24 | 2011-09-24 | Three-level boost soft switching converter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202353464U true CN202353464U (en) | 2012-07-25 |
Family
ID=46542426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203791478U Expired - Fee Related CN202353464U (en) | 2011-09-24 | 2011-09-24 | Three-level boost soft switching converter circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202353464U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281566A (en) * | 2015-11-10 | 2016-01-27 | 中国科学院电工研究所 | Three-level direct-current chopper circuit topology for space |
| JP2017189083A (en) * | 2016-04-01 | 2017-10-12 | 富士電機株式会社 | Chopper circuit |
| CN115173698A (en) * | 2022-09-07 | 2022-10-11 | 深圳市云天数字能源有限公司 | Boosting circuit and boosting method |
-
2011
- 2011-09-24 CN CN2011203791478U patent/CN202353464U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281566A (en) * | 2015-11-10 | 2016-01-27 | 中国科学院电工研究所 | Three-level direct-current chopper circuit topology for space |
| JP2017189083A (en) * | 2016-04-01 | 2017-10-12 | 富士電機株式会社 | Chopper circuit |
| CN115173698A (en) * | 2022-09-07 | 2022-10-11 | 深圳市云天数字能源有限公司 | Boosting circuit and boosting method |
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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: 20120725 Termination date: 20120924 |