CN104836436A - DC converter - Google Patents
DC converter Download PDFInfo
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- CN104836436A CN104836436A CN201510230856.2A CN201510230856A CN104836436A CN 104836436 A CN104836436 A CN 104836436A CN 201510230856 A CN201510230856 A CN 201510230856A CN 104836436 A CN104836436 A CN 104836436A
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- 230000006698 induction Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003079 width control Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The invention discloses a DC converter, wherein a switching mode power supply is composed of an input power supply, three switch transistors, three inductors and three capacitors. The invention provides a converter topological structure. Voltage conversion is realized through a fully controlled switch device. No isolation transformer is required. Low control requirement is obtained. Furthermore the DC converter can satisfy a requirement for outputting different voltages.
Description
Technical field
The present invention relates to a kind of Technics of Power Electronic Conversion device, especially a kind of DC converter.
Background technology
Fig. 1 is the circuit diagram of the structure representing existing DC converter.Direct voltage after alternating voltage from source power supply is carried out rectification smoothly by the mode being referred to as current resonance type switching power unit by the switching power unit shown in Fig. 1 inputs as DC input voitage Uin.At the two ends of the DC power supply Uin of supply DC input voitage Uin, be connected in series with the switch element Q11 (the 1st switch element) be made up of MOSFET and the switch element Q12 (the 2nd switch element) be made up of MOSFET.Between the drain-source of switch element Q12, (or also can between the drain-source of switch element Q11) be connected with series resonance capacitor Cv1, and is connected with the 1st resonant circuit be made up of the primary winding Np1 of resonance reactor Lr1 and transformer T1 and current resonance capacitor Ci1.Resonance reactor Lr1 such as can replace by the leakage inductance of transformer T1.Between the drain-source of switch element Q12, be connected with diode D1, between the drain-source of switch element Q11, be connected with diode D2.Diode D1, D2 can be the parasitic diodes of switch element Q11, Q12.
In addition, secondary coil Ns11, Ns12 of being wound into anti-phase is respectively connected in series with at the secondary side of transformer T1.The voltage produced at secondary coil Ns11, Ns12 passes through diode D11, D12 rectification, and is smoothly exported as output voltage Vo1 by output smoothing capacitor Co1.The signal being provided with Dead Time is alternately input to the grid of switch element Q11, Q12 from control circuit 10 with identical connection amplitude, this Dead Time is used for preventing switch element Q11, Q12 from connecting simultaneously.When switch element Q11, Q12 alternately turn on/off, flow through resonance current at switch element Q11, Q12, release sinuous resonance current by diode D11, D12 at the secondary side of transformer T1.Output voltage Vo1, the seal via not shown photoelectrical coupler etc. feeds back to the control circuit 10 of primary side, by the switching frequency of control circuit 10 control switch element Q11, Q12, makes output voltage Vo1 become predetermined value.In this current resonance type switching power unit, because electric current flows through negative direction (flowing through the electric current of diode D2, D1) when each switch element Q11, Q12 connect, therefore do not produce switching losses.Further, because carried out resonance action, surge voltage when cut-off switch element Q11, Q12 can not also have been produced.Thus low withstand voltage switch element can be used, be the very effective mode formed required for efficient power.
But, in resonant switching power supply device as shown in Figure 1, need to use isolating transformer, add the problem of cost and actual installation area.
Therefore, how to develop a kind of electric pressure converter improving above-mentioned prior art disappearance, real is problem in the urgent need to address at present.
Summary of the invention
DC converter of the present invention comprises input power, switching tube S1, S2, S3, inductance L 1, L2, L3, electric capacity C1, C2, C3.The positive pole of input power Uin connects one end of inductance L 1, one end of negative pole connecting valve pipe S1 of input power Uin, one end of electric capacity C1; The other end of the other end connecting valve pipe S1 of inductance L 1, and tie point is designated as tie point A; One end of one end connecting valve pipe S2 of inductance L 2, the other end of inductance L 2 connects one end of electric capacity C3; One end of the other end connecting valve pipe S3 of switching tube S2, and tie point is designated as tie point B; The other end of switching tube S3 connects one end of inductance L 3, and the other end of inductance L 3 connects the other end of electric capacity C1, the other end of electric capacity C3; Tie point A is connected with one end of electric capacity C2, and the other end of electric capacity C2 connects tie point B; The voltage at electric capacity C3 two ends is as output voltage Uout.Inductance L 2, L3 induction reactance value is equal; Inductance L 2, L3 are coupling inductance; Switching tube S2, S3 are full-controlled switch device, can be IGBT or MOSFET.
DC converter topological structure of the present invention is simple, and do not need isolating transformer, control overflow is low, can meet different required voltage and export.
Accompanying drawing explanation
Fig. 1: the exemplary topology diagram of DC converter of the prior art;
Fig. 2: the topological diagram of DC converter of the present invention.
Embodiment
As shown in Figure 2, DC converter of the present invention comprises input power, switching tube S1, S2, S3, inductance L 1, L2, L3, electric capacity C1, C2, C3.The positive pole of input power Uin connects one end of inductance L 1, one end of negative pole connecting valve pipe S1 of input power Uin, one end of electric capacity C1; The other end of the other end connecting valve pipe S1 of inductance L 1, and tie point is designated as tie point A; One end of one end connecting valve pipe S2 of inductance L 2, the other end of inductance L 2 connects one end of electric capacity C3; One end of the other end connecting valve pipe S3 of switching tube S2, and tie point is designated as tie point B; The other end of switching tube S3 connects one end of inductance L 3, and the other end of inductance L 3 connects the other end of electric capacity C1, the other end of electric capacity C3; Tie point A is connected with one end of electric capacity C2, and the other end of electric capacity C2 connects tie point B; The voltage at electric capacity C3 two ends is as output voltage Uout.
Inductance L 2, inductance L 3 induction reactance value equal, optimization can be the inductance intercoupled, can reduce mutual inductance interference; Can ensure that when S2, S3 conducting output voltage is identical at the upper and lower two-part voltage of tie point B; Switching tube S2, S3 are full-controlled switch device, such as IGBT, MOSFET etc., and switching tube S1 can be full-controlled switch device, also can be and does not control type switching device, as diode, fast recovery diode etc.When switching tube is full-controlled switch device, then carries out drived control by corresponding control circuit and drive circuit, do not repeat at this.
By S1, S2, S3 conducting of Pulse Width Control switching tube and/or shutoff, the energy of the Uin of input power is made to carry out energy storage to the energy-storage travelling wave tube such as inductance, electric capacity, and by switching circuit, output voltage is released energy, form Switching Power Supply, obtained the output voltage Uout of different brackets by different compound modes.
Claims (6)
1. a DC converter, is characterized in that this DC converter forms Switching Power Supply by input power, 3 switching tubes, 3 inductance, 3 electric capacity.
2. a kind of DC converter according to claim 1, this DC converter comprises input power Uin, switching tube S1, S2, S3, inductance L 1, L2, L3, electric capacity C1, C2, C3; The positive pole of input power Uin connects one end of inductance L 1, one end of negative pole connecting valve pipe S1 of input power Uin, one end of electric capacity C1; The other end of the other end connecting valve pipe S1 of inductance L 1, and tie point is designated as tie point A; One end of one end connecting valve pipe S2 of inductance L 2, the other end of inductance L 2 connects one end of electric capacity C3; One end of the other end connecting valve pipe S3 of switching tube S2, and tie point is designated as tie point B; The other end of switching tube S3 connects one end of inductance L 3, and the other end of inductance L 3 connects the other end of electric capacity C1, the other end of electric capacity C3; Tie point A is connected with one end of electric capacity C2, and the other end of electric capacity C2 connects tie point B; The voltage at electric capacity C3 two ends is as output voltage Uout.
3. DC converter according to claim 2, inductance L 2, L3 induction reactance value is equal.
4. DC converter according to claim 3, inductance L 2, L3 are coupling inductance.
5. DC converter according to claim 2, switching tube S2, S3 are full-controlled switch device.
6. DC converter according to claim 5, described switching tube S2, S3 are IGBT or MOSFET.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510230856.2A CN104836436B (en) | 2015-05-07 | 2015-05-07 | A kind of DC converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510230856.2A CN104836436B (en) | 2015-05-07 | 2015-05-07 | A kind of DC converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104836436A true CN104836436A (en) | 2015-08-12 |
| CN104836436B CN104836436B (en) | 2017-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510230856.2A Active CN104836436B (en) | 2015-05-07 | 2015-05-07 | A kind of DC converter |
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| Country | Link |
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| CN (1) | CN104836436B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1835604A1 (en) * | 2006-03-16 | 2007-09-19 | STMicroelectronics S.r.l. | Magnetic core for a coupled multi coil filter inductor |
| CN101090232A (en) * | 2006-06-12 | 2007-12-19 | 台达电子工业股份有限公司 | Power supply conversion device and magnetic structure |
| CN102158096A (en) * | 2011-05-11 | 2011-08-17 | 南京博兰得电子科技有限公司 | Non-isolated resonant converter |
| CN102468779A (en) * | 2010-11-08 | 2012-05-23 | 吕锦山 | Low current ripple power conversion circuit |
| CN203301366U (en) * | 2013-06-17 | 2013-11-20 | 江苏大学 | A novel double-input SEPICDC-DC converter using wind and light complementation |
-
2015
- 2015-05-07 CN CN201510230856.2A patent/CN104836436B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1835604A1 (en) * | 2006-03-16 | 2007-09-19 | STMicroelectronics S.r.l. | Magnetic core for a coupled multi coil filter inductor |
| CN101090232A (en) * | 2006-06-12 | 2007-12-19 | 台达电子工业股份有限公司 | Power supply conversion device and magnetic structure |
| CN102468779A (en) * | 2010-11-08 | 2012-05-23 | 吕锦山 | Low current ripple power conversion circuit |
| CN102158096A (en) * | 2011-05-11 | 2011-08-17 | 南京博兰得电子科技有限公司 | Non-isolated resonant converter |
| CN203301366U (en) * | 2013-06-17 | 2013-11-20 | 江苏大学 | A novel double-input SEPICDC-DC converter using wind and light complementation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104836436B (en) | 2017-03-15 |
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Effective date of registration: 20200813 Address after: Room 809, Kechuang building, Dongtai hi tech Industrial Development Zone, Yancheng City, Jiangsu Province 224200 Patentee after: Dongtai Dongke Intellectual Property Service Co.,Ltd. Address before: 224051 Yancheng City hope road, Jiangsu, No. 1 Patentee before: YANCHENG INSTITUTE OF TECHNOLOGY |
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Effective date of registration: 20210422 Address after: 48 No. 224200 Yancheng City Dongtai city of Jiangsu Province East New District East Avenue Patentee after: Dongtai Chengdong science and Technology Pioneer Park Management Co.,Ltd. Address before: Room 809, Kechuang building, Dongtai hi tech Industrial Development Zone, Yancheng City, Jiangsu Province 224200 Patentee before: Dongtai Dongke Intellectual Property Service Co.,Ltd. |
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Address after: Room 809, Kechuang building, Dongtai hi tech Industrial Development Zone, Yancheng City, Jiangsu Province 224200 Patentee after: Dongtai tepusong Machinery Equipment Co.,Ltd. Address before: Room 809, Kechuang building, Dongtai hi tech Industrial Development Zone, Yancheng City, Jiangsu Province 224200 Patentee before: Dongtai Dongke Intellectual Property Service Co.,Ltd. |
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Effective date of registration: 20210518 Address after: 224200 No. 48 Dongjin Avenue, Chengdong New District, Dongtai City, Yancheng City, Jiangsu Province Patentee after: Dongtai Chengdong science and Technology Pioneer Park Management Co.,Ltd. Address before: Room 809, Kechuang building, Dongtai hi tech Industrial Development Zone, Yancheng City, Jiangsu Province 224200 Patentee before: Dongtai tepusong Machinery Equipment Co.,Ltd. |
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Effective date of registration: 20220601 Address after: No. 33, Nanzhuang Road, Dongtai high tech Industrial Development Zone, Yancheng City, Jiangsu Province 224200 Patentee after: Jiangsu Shenkai New Energy Technology Co.,Ltd. Address before: 224200 No. 48 Dongjin Avenue, Chengdong New District, Dongtai City, Yancheng City, Jiangsu Province Patentee before: Dongtai Chengdong science and Technology Pioneer Park Management Co.,Ltd. |