CN201994853U - Voltage-multiplying rectifying push-pull forward converter - Google Patents
Voltage-multiplying rectifying push-pull forward converter Download PDFInfo
- Publication number
- CN201994853U CN201994853U CN2011200554752U CN201120055475U CN201994853U CN 201994853 U CN201994853 U CN 201994853U CN 2011200554752 U CN2011200554752 U CN 2011200554752U CN 201120055475 U CN201120055475 U CN 201120055475U CN 201994853 U CN201994853 U CN 201994853U
- Authority
- CN
- China
- Prior art keywords
- transformer
- former limit
- winding
- diode
- electric capacity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
A voltage-multiplying rectifying push-pull forward converter consists of two switching tubes, two diodes, a clamping capacitor, two rectifying capacitors, an output rectifying capacitor and a three-winding transformer. The converter comprises a primary circuit and a secondary circuit; the primary circuit comprises two parallel branch circuits; the secondary circuit comprises three parallel branch circuits; the homonymous end of the secondary winding of the transformer is connected between a first diode (D1) and a second diode (D2); and the synonymous end of the secondary winding of the transformer is connected between a first capacitor (C1) and a second capacitor (C2). The converter cancels an output filter inductor so as to realize the soft switching of a secondary diode, thereby efficiently reducing the looping ratio of the transformer and clamping the peak of the primary switching tube well; and the converter is beneficial for high power density and high reliability integration of the converter.
Description
Technical field
The utility model relates to dc dc converter, particularly relates to low pressure input high pressure output straight convertor, belongs to converters.
Background technology
Especially the common output voltage of photovoltaic battery panel is lower for storage battery, regenerative resource, and local AC load and line voltage are higher usually.For avoiding using the isolation of boosting of output low frequency transformer, need that usually lower direct voltage is boosted to high voltage and satisfy back level inverter busbar voltage utilance, often finishing the input voltage copped wave rectifying and wave-filtering that boosts by high frequency transformer is high voltage direct current.In the high pressure occasion, the reverse recovery characteristic of transformer secondary rectifier diode often causes diode to turn-off spike, often needs to add passive, active-clamp in the practical application and absorbs circuit, has influenced system effectiveness and reliability.
Summary of the invention
Technical problem:The purpose of this utility model is on the basis of the above-mentioned technology of research, a kind of voltage multiplying rectifier push-pull ortho-exciting converter is proposed, utilize voltage doubling rectifing circuit to realize transformer portion leakage inductance energy and the soft switch of secondary resonance commutation capacitor resonance realization secondary rectifier diode, the transformer portion leakage inductance energy is transferred to former limit clamping capacitance simultaneously, suppresses former limit switching tube spike.And cancelled the secondary filter inductance, and reduced the transformer secondary to the former limit turn ratio, it is integrated to help the converter high power density.
Technical scheme:A kind of voltage multiplying rectifier push-pull ortho-exciting converter that the utility model proposes comprises former limit circuit and secondary circuit,
A. described former limit circuit comprises the branch road of two parallel connections, and the order that article one branch road connects is: positive source, the former limit of transformer first winding, first switching tube, power cathode, wherein the termination power positive pole of the same name of the former limit of transformer first winding; The order that the second branch road connects is: positive source, second switch pipe, the former limit of transformer second winding, power cathode, wherein the termination power negative pole of the same name of the former limit of transformer second winding; The two ends of former limit electric capacity are connected on respectively on the different name end of transformer former limit first winding and the former limit of transformer second winding;
B. described secondary circuit comprises the branch road of three parallel connections, and article one is propped up route the 3rd electric capacity and constituted, and the 3rd electric capacity upper end is connected with the power supply positive output end, and the lower end is connected with the power-output; Second props up route first electric capacity, the second capacitances in series branch road constitutes, and the two ends of second branch road are connected on the positive and negative output of power supply respectively; Article three, prop up route first diode and the second diode series arm and constitute, the negative pole of first diode is connected with the power supply positive output end, the positive pole of second diode be connected with the power-output;
The of the same name of transformer secondary winding terminates between first diode and second diode, and the different name of transformer secondary winding terminates between first electric capacity, second electric capacity.
Two umber of turns in the former limit of described transformer are identical.First electric capacity, second electric capacity are polarity free capacitor in the described secondary side rectification circuit.
Beneficial effect:The utility model discloses a kind of voltage multiplying rectifier push-pull ortho-exciting straight convertor, comprise two the switching tube S in former limit
1, S
2, a capacitor C
c, two diode D of secondary
1, D
2, three capacitor C
1, C
2, C
3, and a transformer (comprising two former limit windings, a secondary winding).The present invention has realized the soft switch of secondary diode, has solved secondary diode reverse recovery spike problem, has cancelled secondary inductance, and has effectively reduced the transformer secondary to the former limit turn ratio.
Description of drawings
Fig. 1 is a conventional full bridge rectification push-pull ortho-exciting circuit.
Fig. 2 is a voltage multiplying rectifier push-pull ortho-exciting circuit proposed by the invention.
Fig. 3 is followed successively by voltage multiplying rectifier push-pull ortho-exciting circuit former limit switching tube S in the embodiment from top to bottom
1, S
2Duty ratio d
1, d
2And transformer secondary current is.
Fig. 4 is followed successively by voltage multiplying rectifier push-pull ortho-exciting circuit secondary rectifier diode D in the embodiment from top to bottom
2Bear reverse voltage v_rec1 and forward rectified current id1.
Fig. 5 is followed successively by voltage multiplying rectifier push-pull ortho-exciting circuit former limit switching tube S in the embodiment from top to bottom
1, S
2Duty ratio d
1, d
2, switching tube S
1Both end voltage v_ds and clamping capacitance voltage v_clamp.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing, the utility model is described in further detail.
Fig. 1 is a conventional full bridge rectification push-pull ortho-exciting circuit.
Switching tube S
1During conducting, former limit input power supply V
1, winding N
P1, switching tube S
1Conducting, clamping capacitance C simultaneously
c, winding N
P2, switching tube S
1Also constitute the loop, transmit energy to secondary simultaneously.Secondary diode D
1, D
4Positively biased is to the load transfer energy.
Former limit switching tube S
1Have no progeny in the pass, former limit input power supply V
1, winding N
P1, capacitor C
c, winding N
P2Constitute the loop, winding N
P1, N
P2Short circuit, capacitance voltage equals input supply voltage, and the transformer portion leakage inductance energy is discharged on the clamping capacitance simultaneously, relies on bigger clamping capacitance clamp switch pipe shutoff voltage spike; The D of secondary original conducting this moment
1, D
4D with original shutoff
2, D
3Common afterflow is kept inductive current and is powered to the load; S
2After opening, D
1, D
4Electric current reduces gradually, D
2, D
3Electric current increases gradually, realizes the change of current, until D
2, D
3Bear load current fully, D
1, D
4Forward current is reduced to zero, but this moment D
1, D
4Bear back-pressure, the diode reverse recovery characteristic causes D this moment
1, D
4Have current reversal and flow through, part leakage inductance energy and diode junction capacitance resonance cause than lossy and rectifier diode spike, have influenced overall efficiency and reliability.
Fig. 2 is by being proposed voltage multiplying rectifier push-pull ortho-exciting circuit.
Switching tube S
1During conducting, former limit input power supply V
1, winding N
P1, switching tube S
1Conducting, clamping capacitance C simultaneously
c, winding N
P2, switching tube S
1Also constitute the loop, transmit energy to secondary simultaneously.Secondary diode D
1Positively biased is to the load transfer energy.Be different from Fig. 1 circuit be, this moment transformer leakage inductance and secondary capacitor C
1, C
2Resonance, diode are soft open-minded, and resonance current is at S
1Resonance is finished zero current and is turn-offed naturally to zero within the ON time.The transformer leakage inductance energy is finished leakage inductance energy and is reclaimed also effectively to the load end transmission at this moment.
Former limit switching tube S
1Have no progeny in the pass, former limit input power supply V
1, winding N
P1, capacitor C
c, winding N
P2Constitute the loop, winding N
P1, N
P2Short circuit, capacitance voltage equals input supply voltage, and only surplus part circuit leakage inductance energy is discharged on the clamping capacitance simultaneously, and the switching tube spike will suppress better; Secondary diode D
1, D
2All turn-off, by capacitor C
1, C
2, C
3To the load end power supply, diode reverse is born voltage only for output dc voltage, has avoided the hard switching of Fig. 1 circuit oppositely to recover spike.
It is pointed out that simultaneously this secondary circuit has not only served as the resonant circuit part, and itself also be voltage doubling rectifing circuit, can effectively reduce the secondary number of turn.Cancel output inductor simultaneously, can effectively improve inverter power density.With respect to the bigger cost of paying of diode resonance current peak value, still be worth.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that the concrete enforcement of this aspect is only limited to these explanations.Concerning the general technical staff of the technical field of the invention; make some alternative or obvious distortion that are equal to without departing from the inventive concept of the premise; and performance or purposes are identical; all should be considered as belonging to protection scope of the present invention, for example secondary adopts three multiplication of voltages, four multiplication of voltages and even n voltage doubling rectifing circuit etc.
Claims (3)
1. a voltage multiplying rectifier push-pull ortho-exciting converter comprises former limit circuit and secondary circuit, it is characterized in that,
A. described former limit circuit comprises the branch road of two parallel connections, and the order that article one branch road connects is: positive source, the former limit first winding (N of transformer
P1), the first switching tube (S
1), power cathode, the wherein former limit first winding (N of transformer
P1) termination power positive pole of the same name; The order that the second branch road connects is: positive source, second switch pipe (S
1), the former limit second winding (N of transformer
P2), power cathode, the wherein former limit second winding (N of transformer
P2) termination power negative pole of the same name; Former limit electric capacity (C
c) two ends be connected on the former limit first winding (N of transformer respectively
P1) and the former limit second winding (N of transformer
P2) the different name end on;
B. described secondary circuit comprises the branch road of three parallel connections, and article one is propped up route the 3rd electric capacity (C
3) constitute the 3rd electric capacity (C
3) upper end be connected with the power supply positive output end, the lower end is connected with the power-output; Second props up the route first electric capacity (C
1), the second electric capacity (C
2) the series arm formation, the two ends of second branch road are connected on the positive and negative output of power supply respectively; Article three, prop up the route first diode (D
1) and the second diode (D
2) the series arm formation, the first diode (D
1) negative pole be connected the second diode (D with the power supply positive output end
2) positive pole be connected with the power-output;
First diode (the D that terminates at of the same name of transformer secondary winding
1) and the second diode (D
2) between, the different name of transformer secondary winding terminates at the first electric capacity (C
1), the second electric capacity (C
2) between.
2. a kind of voltage multiplying rectifier push-pull ortho-exciting converter as claimed in claim 1 is characterized in that two umber of turns in the former limit of described transformer are identical.
3. a kind of voltage multiplying rectifier push-pull ortho-exciting converter as claimed in claim 1 is characterized in that the first electric capacity (C in the described secondary side rectification circuit
1), the second electric capacity (C
2) be polarity free capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200554752U CN201994853U (en) | 2011-03-04 | 2011-03-04 | Voltage-multiplying rectifying push-pull forward converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200554752U CN201994853U (en) | 2011-03-04 | 2011-03-04 | Voltage-multiplying rectifying push-pull forward converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201994853U true CN201994853U (en) | 2011-09-28 |
Family
ID=44671327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200554752U Expired - Fee Related CN201994853U (en) | 2011-03-04 | 2011-03-04 | Voltage-multiplying rectifying push-pull forward converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201994853U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102111075A (en) * | 2011-03-04 | 2011-06-29 | 东南大学 | Voltage doubling rectifying push-pull normal shock converter |
| CN106329943A (en) * | 2016-09-07 | 2017-01-11 | 国网江苏省电力公司电力科学研究院 | Low-voltage DC boost conversion and control circuit |
| CN107493027A (en) * | 2017-09-13 | 2017-12-19 | 燕山大学 | A kind of modulator approach of single-phase push-pull ortho-exciting formula High Frequency Link matrix inverter topology |
| CN108696147A (en) * | 2018-07-11 | 2018-10-23 | 耐力斯默通动力技术（苏州）有限公司 | A kind of push-pull ortho-exciting Switching Power Supply for electric vehicle |
-
2011
- 2011-03-04 CN CN2011200554752U patent/CN201994853U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102111075A (en) * | 2011-03-04 | 2011-06-29 | 东南大学 | Voltage doubling rectifying push-pull normal shock converter |
| CN106329943A (en) * | 2016-09-07 | 2017-01-11 | 国网江苏省电力公司电力科学研究院 | Low-voltage DC boost conversion and control circuit |
| CN107493027A (en) * | 2017-09-13 | 2017-12-19 | 燕山大学 | A kind of modulator approach of single-phase push-pull ortho-exciting formula High Frequency Link matrix inverter topology |
| CN108696147A (en) * | 2018-07-11 | 2018-10-23 | 耐力斯默通动力技术（苏州）有限公司 | A kind of push-pull ortho-exciting Switching Power Supply for electric vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102111075A (en) | Voltage doubling rectifying push-pull normal shock converter | |
| CN109217681B (en) | Bidirectional resonant converter | |
| CN100379132C (en) | Soft-switch PWM interleaving shunt-wound two-transistor forward power converter | |
| CN109698518B (en) | Traction power supply system and energy feedback device thereof | |
| CN102281006A (en) | Novel three-level soft switching converter | |
| CN103401461B (en) | A kind of high frequency boosting isolated inverter | |
| CN103812359A (en) | Alternating current-direct current converting circuit and control method thereof | |
| CN105515417A (en) | Double-output single-phase PFC convertor and combined type power conversion system and control method thereof | |
| CN101604916B (en) | Zero voltage switch full bridge DC converter based on pi-type auxiliary network | |
| CN103986330A (en) | Resonance boost DC/DC converter and control method thereof suitable for high-voltage and high-power occasions | |
| CN201994853U (en) | Voltage-multiplying rectifying push-pull forward converter | |
| CN103887981A (en) | Full-bridge DC-DC converter | |
| CN107659144A (en) | Boosting unit converter built in inductance | |
| CN203859684U (en) | Large-current half-bridge circuit | |
| CN104779807B (en) | A kind of LLC resonant converter applied in distributed power source | |
| CN100358226C (en) | Single switch double output booster converter | |
| CN203722491U (en) | Alternating current-direct current conversion circuit and alternating current-direct current converter | |
| CN102739064B (en) | Soft-switch full wave rectifying push-pull normal shock inverter | |
| CN102751857B (en) | Passive lossless buffering circuit of power factor correction circuit | |
| CN102263513A (en) | AC-DC isolated conversion circuit | |
| TW200539553A (en) | High step-up converter with coupled-inductor by way of bi-direction energy transmission | |
| CN203775030U (en) | DC-module-used high-voltage-boost-ratio converter based on coupling inductors | |
| CN102403904B (en) | DC-DC (direct current-direct current) translation circuit | |
| CN106655839B (en) | Isolated soft switch alternating current-direct current conversion power supply | |
| CN108347174A (en) | A kind of Boost full-bridge isolateds converter and its compound-active-clamp circuit |
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: 20110928 Termination date: 20130304 |