CN203859682U - Low-input current ripple single-switch high-gain converter - Google Patents
Low-input current ripple single-switch high-gain converter Download PDFInfo
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- CN203859682U CN203859682U CN201420204323.8U CN201420204323U CN203859682U CN 203859682 U CN203859682 U CN 203859682U CN 201420204323 U CN201420204323 U CN 201420204323U CN 203859682 U CN203859682 U CN 203859682U
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Abstract
The utility model discloses a low-input current ripple single-switch high-gain converter, which comprises a direct-current input source (Vin), an independent boost inductor (L1), a controllable power switch tube (Q), a coupling inductor provided with a first winding (n1) and a second winding (n2), a clamp diode (D1), a clamp capacitor (C1), a first one-way rectifier diode (D2), a second one-way rectifier diode (D3), a voltage multiplier circuit (C2), an energy storage capacitor (C3) and an output filter capacitor (C0). Compared with the traditional Boost converter, the low-input current ripple single-switch high-gain converter has the advantages that gain of output voltage of the converter can be improved by using the coupling inductor, stress of peak voltage of the power switch tube and the diode can be reduced, ripples of the input current are low, and the overall conversion efficiency of the converter is also improved.
Description
Technical field
The utility model relates to the DC-DC converter of field of power electronics, specifically, relates to a kind of low input current ripple list switch high gain converter.
Background technology
DC-DC voltage boosting converter is being subject to increasing research application in photovoltaic or fuel cell grid-connected system, for new forms of energy such as photovoltaic, fuel cells, input current ripple is larger on its generating efficiency impact, therefore, the low ripple of continuous input current, the height gain changer topology of boosting becomes first-selection.What conventional boost converter proposed is the limited gain of boosting, and the voltage stress of switching tube is larger, and switching loss is larger, and the reverse recovery current of diode is larger, and reverse recovery loss is larger, can reduce like this conversion efficiency of DC-DC voltage boosting converter.Input current ripple has shortened the life cycle of low pressure input power (photovoltaic, fuel cell etc.) greatly to a certain extent, and for this reason, research novel high-performance and have the high-gain converter of low input ripple, has important theory significance and using value.
About thering is the structural design of single switch converters of high-gain, technical scheme existing relevant in prior art is open, as: China Patent No. 201310423314.8, invention and created name is: a kind of single switch high gain boost converter, and described single switch high gain boost converter comprises common Boost circuit link and accumulator link; Common Boost booster circuit link comprises direct voltage source (V
g), the first inductance (L
1), the 4th diode (D
4), the 4th electric capacity (C
4) and output loading (R
l); Accumulator link comprises the first diode (D
1), the second diode (D
2), the 3rd diode (D
3), the first electric capacity (C
1), the second electric capacity (C
2), the 3rd electric capacity (C
3), the second inductance (L
2) and the 3rd inductance (L
3), although this application scheme has improved input voltage gain, input current ripple is larger.
In addition, for China Patent No. ZL201320524859.3, invention and created name is: a kind of two winding coupled inductance voltage-multiplying type list switching tube high-gain converters, the input current ripple of this technical scheme is larger.So be badly in need of a kind of single switch high gain converter of low input current ripple.
Utility model content
1, the technical problem that utility model will solve
The purpose of this utility model is to provide a kind of low input current ripple, low switch voltage stress, and power switch pipe is few, simple in structure, and cost is lower, controls single switch high gain converter easily.
2, technical scheme
For achieving the above object, the technical scheme that the utility model provides is:
Low input current ripple list switch high gain converter, comprise direct current input source, independent boost inductance, controlled power switch pipe, is provided with the coupling inductance of the first winding and the second winding, clamping diode, clamping capacitance, the first one-way commutation diode, the second one-way commutation diode, multiplication of voltage electric capacity, storage capacitor and output filter capacitor;
Direct current input source just, negative pole respectively with one end of independent boost inductance, the source electrode of power switch pipe is connected, the other end of independent boost inductance is connected with the Same Name of Ends of the first winding and one end of clamping capacitance of coupling inductance, the anode of the other end of the first winding of coupling inductance and the drain electrode of power switch pipe and clamping diode is connected, the negative electrode of clamping diode and one end of storage capacitor be connected with the other end of clamping capacitance, the other end of clamping capacitance is connected with the anode of the first one-way commutation diode with the Same Name of Ends of the second winding of coupling inductance, the other end of the second winding of coupling inductance is connected to one end of multiplication of voltage electric capacity, the other end of multiplication of voltage electric capacity is connected with the anode of the second one-way commutation diode with the negative electrode of the first one-way commutation diode, one end of second negative electrode of one-way commutation diode and the other end of storage capacitor and output filter capacitor is connected, the output filter capacitor other end is connected with the negative pole of direct current input source, output filter capacitor two termination loads, the voltage at output filter capacitor two ends is output voltage.
The utility model has three kinds of operation modes:
Operation mode 1: power switch pipe conducting, clamping capacitance, multiplication of voltage electric capacity and storage capacitor are charging mode;
Operation mode 2: power switch pipe turn-offs, clamping capacitance is charging mode, multiplication of voltage electric capacity and storage capacitor are electric discharge mode;
Operation mode 3: power switch pipe turn-offs, and clamping capacitance, multiplication of voltage electric capacity and storage capacitor are electric discharge mode.Under these three kinds of mode, realize the operation of converter.
3, beneficial effect
The technical scheme that adopts the utility model to provide, compares with existing known technology, has following remarkable result:
1, compare with traditional B oost converter, the utility model not only can utilize coupling inductance to improve the output voltage gain of converter, can also reduce the peak voltage stress of power switch pipe and diode, and have the advantages that input current ripple is low, the whole conversion efficiency of converter also increases.
2, the utlity model has height boost no-load voltage ratio, low input current ripple, low switch voltage stress, and simple in structure, the technical characterstic that number of switches is few.
Accompanying drawing explanation
Fig. 1 is the topology diagram of a kind of low input current ripple list switch high gain converter of the present utility model;
Fig. 2 is the equivalent circuit diagram of the operation mode 1 of a kind of low input current ripple list switch high gain converter of the present utility model;
Fig. 3 is the equivalent circuit diagram of the operation mode 2 of a kind of low input current ripple list switch high gain converter of the present utility model;
Fig. 4 is the equivalent circuit diagram of the operation mode 3 of a kind of low input current ripple list switch high gain converter of the present utility model.
Label declaration in figure:
V
in: direct current input source; L
1: independent boost inductance; Q: controlled power switch pipe; n
1: the first winding of coupling inductance; n
2: the second winding of coupling inductance; D
1: clamping diode; C
1: clamping capacitance; D
2: the first one-way commutation diode; D
3: the second one-way commutation diode; C
2: multiplication of voltage electric capacity; C
3: storage capacitor; C
o: output filter capacitor; R
0: load.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.
Embodiment 1
As shown in Figure 1, low input current ripple list switch high gain converter, comprises direct current input source V
in, independent boost inductance L
1, controlled power switch pipe Q, is provided with the first winding n
1with the second winding n
2coupling inductance, clamping diode D
1, clamping capacitance C
1, the first one-way commutation diode D
2, the second one-way commutation diode D
3, multiplication of voltage capacitor C
2, storage capacitor C
3with output filter capacitor C
o;
Direct current input source V
inpositive and negative electrode respectively with independent boost inductance L
1the source electrode of one end, power switch pipe Q be connected, independent boost inductance L
1the other end and the first winding (n of coupling inductance
1) Same Name of Ends and clamping capacitance C
1one end be connected, the first winding n of coupling inductance
1the other end and drain electrode and the clamping diode D of power switch pipe Q
1anode be connected, clamping diode D
1negative electrode and storage capacitor C
3one end and and clamping capacitance C
1the other end be connected, clamping capacitance C
1the other end and the second winding n of coupling inductance
2same Name of Ends and the first one-way commutation diode D
2anode be connected, the second winding n of coupling inductance
2the other end be connected to multiplication of voltage capacitor C
2one end, multiplication of voltage capacitor C
2the other end and the first one-way commutation diode D
2negative electrode and the second one-way commutation diode D
3anode be connected, the second one-way commutation diode D
3negative electrode and storage capacitor C
3the other end and output filter capacitor C
oone end be connected, output filter capacitor C
othe other end and direct current input source V
innegative pole be connected, output filter capacitor C
otwo termination load R
0, output filter capacitor C
othe voltage at two ends is output voltage.
Low input current ripple list switch high gain converter of the present utility model, has three kinds of operation modes, and labor is as follows:
Operation mode 1:
As shown in Figure 2, power switch pipe Q conducting mode, clamping capacitance C
1, multiplication of voltage capacitor C
2and storage capacitor C
3be charging mode.Under this mode, the first one-way commutation diode D
2conducting, clamping diode D
1with the second one-way commutation diode D
3all turn-off.Wherein, direct current input source V
in, independent boost inductance L
1, coupling inductance the first winding n
1and power switch pipe Q forms loop, direct current input source V
into independent boost inductance L
1and the first winding n of coupling inductance
1charging, independent boost inductance L flows through
1and the electric current approximately linear of coupling inductance leakage inductance rises; The second winding n of coupling inductance
2, the first one-way commutation diode D
2and multiplication of voltage capacitor C
2form voltage-multiplying circuit, the second winding n of coupling inductance
2via the first one-way commutation diode D
2to multiplication of voltage capacitor C
2charging, multiplication of voltage capacitor C
2in discharge condition; Output filter capacitor C
oto clamping capacitance C
1and storage capacitor C
3charging, clamping capacitance C
1with storage capacitor C
3all in charged state.
Operation mode 2:
As shown in Figure 3, power switch pipe Q turn-offs mode, clamping capacitance C
1for charging mode, multiplication of voltage capacitor C
2with storage capacitor C
3be electric discharge mode.Under this mode, clamping diode D
1with one-way commutation diode D
oall conductings, the first one-way commutation diode D
2turn-off.Wherein, the first winding n of coupling inductance
1through clamping diode D
1afterflow to the second winding n of coupling inductance
2and clamping capacitance C
1transferring energy, clamping capacitance C
1in charged state, the first winding n of coupling inductance
1both end voltage clamp – V
c1(V
c1clamping capacitance C
1the voltage at two ends), the independent boost inductance L that flows through
1and the electric current approximately linear of coupling inductance leakage inductance declines; Direct current input source V
in, independent boost inductance L
1, coupling inductance the first winding n
1, clamping diode D
1, coupling inductance the second winding n
2, multiplication of voltage capacitor C
2, the second one-way commutation diode D
3form loop with output load, energy is from multiplication of voltage capacitor C
2, storage capacitor C
3with in coupling inductance, to load, shift, multiplication of voltage capacitor C
2with storage capacitor C
3all in discharge condition.
Operation mode 3:
As shown in Figure 4, power switch pipe Q turn-offs mode, clamping capacitance C
1, multiplication of voltage capacitor C
2and storage capacitor C
3be electric discharge mode.Under this mode, clamping diode D
1and the first one-way commutation diode D
2all turn-off one-way commutation diode D
oconducting.Due to the effect of coupling inductance, clamping diode D
1current transfer to the second one-way commutation diode D
3, so before power switch pipe Q opens again, clamping diode D
1naturally turn-off; Be stored in the first winding n of coupling inductance
1energy be transferred to the second winding n of coupling inductance completely
2, cause the electric current of the coupling inductance leakage inductance of flowing through to reduce to zero; Direct current input source V
in, independent boost inductance L
1, clamping capacitance C
1, coupling inductance the second winding n
2, multiplication of voltage capacitor C
2, the second one-way commutation diode D
3form loop with output load, energy is from clamping capacitance C
1, multiplication of voltage capacitor C
2, storage capacitor C
3with in coupling inductance, to load, shift, clamping capacitance C
1, multiplication of voltage capacitor C
2, storage capacitor C
3all in discharge condition.
Low input current ripple list switch high gain converter of the present utility model, under these three kinds of mode, completes the conversion of energy.
Claims (1)
1. low input current ripple list switch high gain converter, is characterized in that: comprise direct current input source (V
in), independent boost inductance (L
1), controlled power switch pipe (Q), is provided with the first winding (n
1) and the second winding (n
2) coupling inductance, clamping diode (D
1), clamping capacitance (C
1), the first one-way commutation diode (D
2), the second one-way commutation diode (D
3), multiplication of voltage electric capacity (C
2), storage capacitor (C
3) and output filter capacitor (C
o);
Described direct current input source (V
in) positive and negative electrode respectively with independent boost inductance (L
1) the source electrode of one end, power switch pipe (Q) be connected, independent boost inductance (L
1) the other end and the first winding (n of coupling inductance
1) Same Name of Ends and clamping capacitance (C
1) one end be connected, the first winding (n of coupling inductance
1) the other end and drain electrode and the clamping diode (D of power switch pipe (Q)
1) anode be connected, clamping diode (D
1) negative electrode and storage capacitor (C
3) one end and and clamping capacitance (C
1) the other end be connected, clamping capacitance (C
1) the other end and the second winding (n of coupling inductance
2) Same Name of Ends and the first one-way commutation diode (D
2) anode be connected, the second winding (n of coupling inductance
2) the other end be connected to multiplication of voltage electric capacity (C
2) one end, multiplication of voltage electric capacity (C
2) the other end and the first one-way commutation diode (D
2) negative electrode and the second one-way commutation diode (D
3) anode be connected, the second one-way commutation diode (D
3) negative electrode and storage capacitor (C
3) the other end and output filter capacitor (C
o) one end be connected, output filter capacitor (C
o) other end and direct current input source (V
in) negative pole be connected, output filter capacitor (C
o) two termination load (R
0).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420204323.8U CN203859682U (en) | 2014-04-24 | 2014-04-24 | Low-input current ripple single-switch high-gain converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420204323.8U CN203859682U (en) | 2014-04-24 | 2014-04-24 | Low-input current ripple single-switch high-gain converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203859682U true CN203859682U (en) | 2014-10-01 |
Family
ID=51609517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420204323.8U Expired - Fee Related CN203859682U (en) | 2014-04-24 | 2014-04-24 | Low-input current ripple single-switch high-gain converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203859682U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944399A (en) * | 2014-04-24 | 2014-07-23 | 安徽工业大学 | Low-input-current-ripple single-switch high-gain converter |
| CN106026643A (en) * | 2016-07-15 | 2016-10-12 | 安徽工业大学 | High-voltage-gain DC-DC converter integrating switching capacitor and coupling inductor |
| CN108521223A (en) * | 2018-04-24 | 2018-09-11 | 上海推拓科技有限公司 | Switching power circuit |
| CN109309448A (en) * | 2018-11-21 | 2019-02-05 | 三峡大学 | A kind of wide output Cuk DC-DC converter of wide input |
| CN111725993A (en) * | 2020-06-17 | 2020-09-29 | 辽宁工程技术大学 | High-efficiency Sepic soft switch converter and control method thereof |
| CN114301282A (en) * | 2021-12-31 | 2022-04-08 | 镇江金能电力科技有限公司 | High-gain DC-DC converter based on coupling inductor |
| CN116317609A (en) * | 2023-05-23 | 2023-06-23 | 深圳市恒运昌真空技术有限公司 | DC-DC conversion circuit and device |
-
2014
- 2014-04-24 CN CN201420204323.8U patent/CN203859682U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944399A (en) * | 2014-04-24 | 2014-07-23 | 安徽工业大学 | Low-input-current-ripple single-switch high-gain converter |
| CN106026643A (en) * | 2016-07-15 | 2016-10-12 | 安徽工业大学 | High-voltage-gain DC-DC converter integrating switching capacitor and coupling inductor |
| CN106026643B (en) * | 2016-07-15 | 2019-03-29 | 安徽工业大学 | A kind of high voltage gain DC-DC converter of hybrid switch capacitor and coupling inductance |
| US11114935B2 (en) | 2018-04-24 | 2021-09-07 | Shanghai Tuituo Technology Co., Ltd. | Switching-mode power supply circuit |
| CN108521223A (en) * | 2018-04-24 | 2018-09-11 | 上海推拓科技有限公司 | Switching power circuit |
| CN109309448A (en) * | 2018-11-21 | 2019-02-05 | 三峡大学 | A kind of wide output Cuk DC-DC converter of wide input |
| CN109309448B (en) * | 2018-11-21 | 2024-03-12 | 三峡大学 | Wide-input wide-output Cuk DC-DC converter |
| CN111725993A (en) * | 2020-06-17 | 2020-09-29 | 辽宁工程技术大学 | High-efficiency Sepic soft switch converter and control method thereof |
| CN111725993B (en) * | 2020-06-17 | 2021-10-26 | 辽宁工程技术大学 | High-efficiency Sepic soft switch converter and control method thereof |
| CN114301282A (en) * | 2021-12-31 | 2022-04-08 | 镇江金能电力科技有限公司 | High-gain DC-DC converter based on coupling inductor |
| CN114301282B (en) * | 2021-12-31 | 2023-09-19 | 镇江金能电力科技有限公司 | High-gain DC-DC converter based on coupling inductance |
| CN116317609A (en) * | 2023-05-23 | 2023-06-23 | 深圳市恒运昌真空技术有限公司 | DC-DC conversion circuit and device |
| CN116317609B (en) * | 2023-05-23 | 2023-09-29 | 深圳市恒运昌真空技术有限公司 | DC-DC conversion circuit and device |
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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: 20141001 Termination date: 20150424 |
|
| EXPY | Termination of patent right or utility model |