CN102364852B - Single switching tube high-grain converter based on coupling inductance voltage-multiplying unit - Google Patents
Single switching tube high-grain converter based on coupling inductance voltage-multiplying unit Download PDFInfo
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- CN102364852B CN102364852B CN201110325476.9A CN201110325476A CN102364852B CN 102364852 B CN102364852 B CN 102364852B CN 201110325476 A CN201110325476 A CN 201110325476A CN 102364852 B CN102364852 B CN 102364852B
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Abstract
The invention discloses a single switching tube high-grain converter based on a coupling inductance voltage-multiplying unit. The first end of a coupling inductance primary winding is connected with an anode of an input power supply and the first end of a voltage-multiplying capacitor; the first end of a coupling inductance secondary winding is connected with the second end of the voltage-multiplying capacitor; the second end of the coupling inductance primary winding is connected with a drain electrode of a switching tube, an anode of a first follow current diode and the first end of a switching capacitor; the second end of a coupling inductance secondary winding is connected with a cathode of the first follow current diode and an anode of a second follow current diode; an anode of the output diode is connected with a cathode of the second follow current diode and the second end of the switching capacitor; the cathode of the output diode is respectively connected with the first end of the output capacitor and the first end of an output load; and the first end of the coupling inductance primary winding and the second end of the coupling inductance secondary winding are dotted terminals. According to the single switching tube high-grain converter disclosed by the invention, the turn-off voltage peak is inhibited; leakage inductance is recovered; and the grain of energy voltage is high.
Description
Technical field
The present invention relates to a kind of single switching tube high-gain converter, be applicable to non-every type high-gain unsteady flow occasion.
Background technology
Expand for realizing boost transducer gain, can use switched capacitor technique.The booster converter that the Boost gain that conventional single-stage Switch capacitor structure is realized is expanded, its circuit structure is simple, and realization is succinct, but also exists the shortcoming that voltage gain is little; And the Boost converter of two-stage switching capacity has further promoted gain, but still there are two weak points in this converter: one switching tube electric current point cutting edge of a knife or a sword impacts large, very large lifting current stress and the loss of device; Its two, this converter boost ability is still limited, has a meeting, an audience, etc. well under one's control under closing and still can not meet the requirement of boosting in promotion very.For above-mentioned first deficiency, having introduced at present switching capacity loop seals in a very little inductance and suppresses the large impact current problems that switching capacity parallel connection brings, carry out the gain of further Lifting Transform device by multiple-pole switch capacitance structure for the second deficiency, but the complexity of the great increase system of meeting.
Summary of the invention
In order to overcome the less above-mentioned shortcoming of circuit structure complexity, voltage gain of existing boost converter, the invention provides and a kind ofly not only suppressed switching tube shutoff voltage point cutting edge of a knife or a sword but also reclaimed leakage inductance and the single switching tube high-gain converter based on coupling inductance voltage doubling unit that energy voltage gain is high.
For the technical scheme that solves the problems of the technologies described above proposition is:
Based on a single switching tube high-gain converter for coupling inductance voltage doubling unit, comprise a coupling inductance with former and deputy limit winding, a multiplication of voltage electric capacity, a switching capacity, an output capacitance, two fly-wheel diodes, an output diode and a switching tube; The first end of the former limit of described coupling inductance winding is connected with the positive pole of input power and the first end of multiplication of voltage electric capacity, the first end of the secondary winding of coupling inductance is connected with the second end of multiplication of voltage electric capacity, and the second end of the former limit of coupling inductance winding and the drain electrode of switching tube and the anode of first afterflow diode and the first end of switching capacity are connected; The second end of the secondary winding of coupling inductance is connected with the anode of the negative electrode of first afterflow diode and second afterflow diode; The anode of output diode is connected with the negative electrode of second afterflow diode and with the second end of switching capacity, and the negative electrode of output diode is connected with the first end of output capacitance, the first end of output loading respectively; The second end of output capacitance is connected with the second end of the negative pole of input power and the source electrode of switching tube and output loading; The first end of the former limit of coupling inductance winding and the second end of coupling inductance secondary winding are Same Name of Ends.
The present invention is the single tube high-gain converter of introducing coupling inductance formation coupling inductance voltage doubling unit based on Switch capacitor structure.This converter circuit has limited by the leakage inductance of coupling inductance the large electric current point cutting edge of a knife or a sword that switching capacity causes, simultaneously by changing the step-up ratio that recently regulates converter of pounding of coupling inductance, only increase a winding of coupling inductance, without increasing other devices, and switching capacity and output diode are just as the clamp absorbing circuit of coupling inductance leakage inductance energy, and having suppressed switching tube shutoff voltage point cutting edge of a knife or a sword has the energy that has reclaimed leakage inductance, has further improved voltage gain.
Three kinds of different connected modes of the second end of multiplication of voltage electric capacity of the present invention, the function of its realization is identical, just the high frequency ripple difference to some extent of input capacitance or output capacitance.
Advantage of the present invention: this converter circuit has limited by the leakage inductance of coupling inductance the large electric current point cutting edge of a knife or a sword that switching capacity causes, simultaneously by changing the step-up ratio that recently regulates converter of pounding of coupling inductance, only increase a winding of coupling inductance, without increasing other devices, and switching capacity and output diode are just as the clamp absorbing circuit of coupling inductance leakage inductance energy, suppress the energy that switching tube shutoff voltage point cutting edge of a knife or a sword has reclaimed again leakage inductance, further improved voltage gain.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the first connected mode of patent of the present invention.
Fig. 2 is the circuit equivalent figure of the first connected mode of patent of the present invention.
Fig. 3 is the circuit diagram of the second connected mode of patent of the present invention.
Fig. 4 is the circuit diagram of the third connected mode of patent of the present invention.
Specific implementation method
Below in conjunction with accompanying drawing, the present invention will be further described.
Embodiment mono-
With reference to accompanying drawing 1,2, a kind of single switching tube high-gain converter based on coupling inductance voltage doubling unit, comprise a coupling inductance La with former and deputy limit winding, Lb, a multiplication of voltage capacitor C m, a switching capacity Cc, an output capacitance C0, two sustained diode r1, Dr2, an output diode D0, a switching tube S; The first end of the former limit of described coupling inductance winding L a is connected with the first end of the positive pole of input power Vin and multiplication of voltage capacitor C m, and the second end of the former limit of coupling inductance winding L a and the drain electrode of switching tube S and the anode of first afterflow diode Dr1 and the first end of switching capacity Cc are connected; The first end of the secondary winding L b of coupling inductance is connected with the second end of multiplication of voltage capacitor C m, and the second end of the secondary winding L b of coupling inductance is connected with the anode of first afterflow diode Dr1 negative electrode and second afterflow diode Dr1; The anode D0 of output diode is connected with the negative electrode of second afterflow diode Dr2 and the second end of switching capacity Cc, and the first end of output capacitance C0 is connected with the first end of the negative electrode of output diode and output loading R0; The second end of output capacitance C0 is connected with the source electrode of the negative pole of input power Vin and switching tube S and the second end of output loading R0.The second end of the first end of the former limit of coupling inductance winding L a and coupling inductance secondary winding L b is Same Name of Ends.
In switch periods of single switching tube high-gain converter based on coupling inductance voltage doubling unit, have 2 courses of work, i.e. switching tube S shutoff and switching tube S open the transfer process of work.
Switching tube S is in the time turn-offing:
Leakage inductance electric current is by switching capacity Cc, output capacitance Co and output diode Do afterflow, and the voltage of switching tube is by clamping capacitance Cc clamp.Energy starts to be shifted to load by coupling inductance and clamping capacitance.Meanwhile energy also transmits to multiplication of voltage capacitor C m by coupling inductance.Leakage inductance is with clamping capacitance and multiplication of voltage electric capacity generation resonance, and because harmonic period is larger, leakage inductance electric current can be thought what linearity declined.
The electric current of clamping capacitance Cc of flowing through drops to zero, and now former limit winding current equals secondary winding current.Output diode turn-offs naturally, does not therefore have output diode reverse-recovery problems.When this stage, energy continues to transmit to multiplication of voltage capacitor C m.
When switching tube S opens again:
Because leakage inductance electric current has suppressed current changing rate, therefore almost zero current turning-on of switching tube.After this leakage inductance electric current starts to start to decline under the effect of the multiplication of voltage capacitance voltage sum on former limit in input voltage and conversion.
The voltage drop to zero of sustained diode r1, the parasitic capacitance Cs of Dr1 starts and the former limit leakage inductance Lk resonance of coupling inductance afterwards, and the voltage of parasitic capacitance Cs rises and leakage inductance electric current starts to rise.
Voltage on parasitic capacitance Cs can make sustained diode r2 conducting, the former limit leakage inductance Lk of Cc, Cm and coupling inductance starts resonance afterwards, the energy of multiplication of voltage electric capacity starts to shift to clamping capacitance, meanwhile, coupling inductance is delivered to energy switching capacity from input power as transformer.And the magnetizing inductance Lm of coupling inductance also starts charging.
Output diode Do and two sustained diode r1 and Dr2 are in reverse-biased state.Out-put supply is to magnetizing inductance and leakage inductance charging, and exciting current and leakage inductance electric current are linear to rise.
Embodiment bis-
Referring to Fig. 3, the difference of this enforcement and embodiment mono-is, one end of the described first end of multiplication of voltage electric capacity and the source electrode of the negative pole of input voltage source and switching tube and one end of output capacitance and output loading is connected, and all the other 26S Proteasome Structure and Functions are all identical.
Embodiment tri-
Referring to Fig. 4, the difference of this enforcement and embodiment mono-is, described multiplication of voltage electric capacity first end is connected with one end of the negative electrode of output diode and one end of output capacitance and output loading, and all the other 26S Proteasome Structure and Functions are all identical.
Content described in this specification embodiment is only enumerating of way of realization to inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention is also and conceive the equivalent technologies means that can expect according to the present invention in those skilled in the art.
Claims (1)
1. the single switching tube high-gain converter based on coupling inductance voltage doubling unit, it is characterized in that: described single switching tube high-gain converter comprises a coupling inductance with former and deputy limit winding, a multiplication of voltage electric capacity, a switching capacity, an output capacitance, two fly-wheel diodes, an output diode and a switching tube; The first end of the former limit of described coupling inductance winding is connected with the positive pole of input power and the first end of multiplication of voltage electric capacity, the first end of the secondary winding of coupling inductance is connected with the second end of multiplication of voltage electric capacity, and the second end of the former limit of coupling inductance winding and the drain electrode of switching tube and the anode of first afterflow diode and the first end of switching capacity are connected; The second end of the secondary winding of coupling inductance is connected with the anode of the negative electrode of first afterflow diode and second afterflow diode; The anode of output diode is connected with the negative electrode of second afterflow diode and with the second end of switching capacity, and the negative electrode of output diode is connected with the first end of output capacitance, the first end of output loading respectively; The second end of output capacitance is connected with the second end of the negative pole of input power and the source electrode of switching tube and output loading; The first end of the former limit of coupling inductance winding and the second end of coupling inductance secondary winding are Same Name of Ends.
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| CN102364852B true CN102364852B (en) | 2014-06-18 |
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| CN102710126B (en) * | 2012-06-08 | 2014-12-17 | 上海电力学院 | High-gain type step-up direct current converter |
| CN102946194B (en) * | 2012-12-12 | 2016-02-03 | 重庆大学 | A kind of high-gain alternation and parallel connection boosting converter |
| CN103051180A (en) * | 2012-12-26 | 2013-04-17 | 杭州科为达电气有限公司 | Voltage-multiplying unit-containing passive lossless clamping high-gain converter |
| CN103051179A (en) * | 2012-12-26 | 2013-04-17 | 杭州科为达电气有限公司 | High step-up ratio voltage doubling structure passive lossless clamped converter |
| CN103066837A (en) * | 2012-12-26 | 2013-04-24 | 杭州科为达电气有限公司 | High gain voltage-multiplying structure active lossless clamping converter |
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| CN104682705B (en) * | 2015-02-13 | 2017-06-20 | 华为技术有限公司 | A kind of DC two-way changing circuit and power supply |
| CN104779807B (en) * | 2015-04-16 | 2017-03-29 | 陕西科技大学 | A kind of LLC resonant converter applied in distributed power source |
| CN106602850B (en) * | 2015-10-16 | 2019-11-15 | 得能创科有限公司 | A kind of power supply ripple suppression circuit and method from coupling |
| CN105515392B (en) * | 2015-12-28 | 2018-06-01 | 深圳茂硕电气有限公司 | A kind of DC-DC voltage boosting translation circuit |
| CN105896974A (en) * | 2016-06-15 | 2016-08-24 | 盐城工学院 | High-gain direct-current voltage-boosting conversion circuit |
| CN106685218B (en) * | 2017-03-29 | 2019-01-15 | 盐城工学院 | There is the single tube high-gain DC voltage increase translation circuit of additional potential superposition output |
| CN106685221B (en) * | 2017-03-29 | 2018-12-14 | 盐城工学院 | The single tube high-gain DC voltage increase translation circuit for thering is additional potential to motivate |
| CN107959429B (en) * | 2017-12-08 | 2020-05-12 | 河海大学文天学院 | Coupling inductor boost inverter and control method thereof |
| CN111669057B (en) * | 2020-05-26 | 2021-05-18 | 中国科学院电工研究所 | DC boost converter and control method thereof |
| CN112713769B (en) * | 2020-12-29 | 2022-03-22 | 广东电网有限责任公司电力科学研究院 | Single-switch Boost three-level converter based on Boost formula |
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| CN101783588A (en) * | 2009-12-31 | 2010-07-21 | 杭州浙大太阳电气有限公司 | Passive and nondestructive clamping single-phase high-gain converter |
| CN202353467U (en) * | 2011-10-24 | 2012-07-25 | 杭州浙阳电气有限公司 | High-gain converter with single switch tube based on coupling inductance voltage-multiplying unit |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783588A (en) * | 2009-12-31 | 2010-07-21 | 杭州浙大太阳电气有限公司 | Passive and nondestructive clamping single-phase high-gain converter |
| CN202353467U (en) * | 2011-10-24 | 2012-07-25 | 杭州浙阳电气有限公司 | High-gain converter with single switch tube based on coupling inductance voltage-multiplying unit |
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