CN203243222U - High-gain converter containing voltage multiplying unit and improved interleaved Boost - Google Patents
High-gain converter containing voltage multiplying unit and improved interleaved Boost Download PDFInfo
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- CN203243222U CN203243222U CN 201320303248 CN201320303248U CN203243222U CN 203243222 U CN203243222 U CN 203243222U CN 201320303248 CN201320303248 CN 201320303248 CN 201320303248 U CN201320303248 U CN 201320303248U CN 203243222 U CN203243222 U CN 203243222U
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- 238000004804 winding Methods 0.000 claims abstract description 46
- 239000003990 capacitor Substances 0.000 claims abstract description 23
- 230000008878 coupling Effects 0.000 claims abstract description 16
- 238000010168 coupling process Methods 0.000 claims abstract description 16
- 238000005859 coupling reaction Methods 0.000 claims abstract description 16
- 230000002459 sustained effect Effects 0.000 claims description 19
- 238000011084 recovery Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model discloses a high-gain converter containing a voltage multiplying unit and an improved interleaved Boost. The high-gain converter comprises two switching tubes, two clamping diodes, two clamping capacitors, a free-wheeling diode, an output diode, a lifting capacitor, a filter capacitor and two coupling inductors, wherein each coupling inductor is provided with two windings. According to the utility model, by making use of the transformer effect of the coupling inductors, gain of the converter is expanded, voltage stresses of the first switching tube, the second switching tube, the first clamping diode and the second clamping diode is reduced, the application of a high-performance switching tube device is made possible, and conduction loss and switching loss of the switching tubes are reduced. Compared with a diode with high voltage stress, conduction voltage drop of a diode with low voltage stress is smaller, and the reverse recovery characteristic of the diode with low voltage stress is better. The loss of the converter is further reduced, and the introduction of the voltage multiplying unit further improves gain of a circuit and reduces voltage stress of a device. Zero-current switching-on of the first switching tube and the second switching tube is realized by using leakage inductance of the coupling inductors; and meanwhile, soft switching-off of the free-wheeling diode is realized by using the leakage inductance of the coupling inductors. Energy for using the first clamping diode, the second clamping diode, the first clamping capacitor and the second clamping capacitor to absorb the leakage inductance is finally transferred to a load, thus realizing lossless absorption. Ripple of input current is reduced and the power level of a system is improved through interleaved control.
Description
Technical field
The utility model relates to a kind of DC-DC converter and application, belongs to the power conversion field in the power electronic technology.
Background technology
In renewable energy system, because the electric energy that many regenerative resources are sent all is the lower direct current of voltage, and grid-connected system needs the higher dc bus of voltage, therefore needs DC-DC converter low voltage and direct current to be converted to the high-voltage direct-current electricity that is fit to be incorporated into the power networks.Low input current ripple, high-gain, high efficiency non-isolation type converter have important effect at the regenerative resource field volume that generates electricity by way of merging two or more grid systems.
The output voltage gain of conventional booster type (Boost) crisscross parallel DC-DC converter is less, the voltage stress of power switch pipe is larger, and power switch pipe is hard switching work, and switching loss is large, the reverse recovery current of fly-wheel diode is larger, and reverse recovery loss is larger.In recent years, some soft switch circuits have in succession been studied, by being attached with the devices such as source power switching tube and passive inductance, electric capacity or realizing the soft switch of power switch pipe by devices such as additional diode and passive inductance, electric capacity.Although soft switch circuit can be realized the soft switch of power switch pipe, can not reduce the voltage stress of power switch pipe, do not expand the gain of converter yet.
Summary of the invention
The purpose of this utility model is to solve problems of the prior art, a kind of high-gain converter that contains voltage doubling unit and improved Interleaved Boost is provided, circuit topological structure is simple, and control realizes easily, effectively reduce simultaneously the voltage stress of input current ripple and power tube, improved the performance of converter.
The high-gain converter that contains voltage doubling unit and improved Interleaved Boost described in the utility model is characterized in that as shown in Figure 1:
Converter comprises crisscross parallel Boost modified model booster circuit unit, voltage-multiplying circuit unit and output circuit unit;
Crisscross parallel Boost improved circuit unit in the converter is made of two windings, two switching tubes, two clamping diodes and two clamping capacitances, wherein:
The first end of the first winding links to each other with the first end of the second winding and the positive pole of power supply, the second end of the first winding links to each other with the drain electrode of the first switching tube, the second end of the second winding links to each other with the drain electrode of second switch pipe, the source electrode of the source electrode of the first switching tube and second switch pipe and the negative pole of power supply link to each other, the anode of the first clamping diode links to each other with the drain electrode of second switch pipe, the anode of the negative electrode of the first clamp diode and the second clamping diode and the second end of the first clamping capacitance link to each other, the first end of the first clamping capacitance links to each other with the second end of the first winding and the drain electrode of the first switching tube, the negative electrode of the second clamping diode links to each other with the first end of the second clamping capacitance, and the second end of the second clamping capacitance links to each other with the negative pole of power supply;
The voltage-multiplying circuit unit is made of a fly-wheel diode, a lifting electric capacity and two windings three, wherein:
The negative electrode of the anode of fly-wheel diode, the second clamping diode, the second clamping capacitance and tertiary winding first end link to each other, the second end of the negative electrode of fly-wheel diode, the anode of output diode and lifting electric capacity links to each other, the tertiary winding the second end links to each other with the 4th winding first end, the 4th winding the second end links to each other with lifting electric capacity first end, the first winding first end and tertiary winding first end are the Same Name of Ends of same coupling inductance, and the second winding first end and the 4th winding the second end are the Same Name of Ends of same coupling inductance;
Output circuit unit is made of output diode, filter capacitor, wherein:
The anode of the negative electrode of output diode, the first end of filter capacitor and output links to each other, and the second end of the negative terminal of output, filter capacitor and the negative terminal of input link to each other.
During the utility model work, utilize the transformer action of coupling inductance to realize the expansion of transducer gain, reduced the voltage stress of the first switching tube, second switch pipe, the first clamping diode and the second clamping diode, make the application of high performance switching tube device become possibility, thereby reduce conduction loss and the switching loss of switching tube, and than the diode of high voltage stress, not only conduction voltage drop is less for the lower diode of voltage stress, and reverse recovery characteristic is better, has further reduced the loss of converter.The introducing of voltage doubling unit has further improved the gain of circuit and has reduced the voltage stress of device; Utilize the leakage inductance of coupling inductance to realize the zero current turning-on of the first switching tube and second switch pipe; Utilize simultaneously the leakage inductance of coupling inductance also to realize the soft shutoff of fly-wheel diode; The energy that utilizes the first clamping diode, the second clamping diode and the first clamping capacitance, the second clamping capacitance to absorb leakage inductance finally is transferred to load, realizes Lossless Snubber; Utilize the staggered power grade that has reduced the ripple of input current and improved system of controlling.
The converter that the utility model proposes need not extra power switch and inductance element, add ons is few, simple in structure, control is convenient, noenergy losser in the circuit can improve the efficient of booster type parallel circuits, and in the commutation course, no-voltage overshoot when power switch turn-offs, no current overshoot when fly-wheel diode is opened.Can in the situation of appropriate duty ratio, realize higher voltage gain.
Description of drawings
Fig. 1 is the circuit diagram that the utility model contains the high-gain converter of voltage doubling unit and improved Interleaved Boost.
Embodiment
Referring to Fig. 1, converter comprises crisscross parallel Boost modified model booster circuit unit, voltage-multiplying circuit unit and output circuit unit;
Crisscross parallel Boost improved circuit unit in the converter is by two winding L
1L
2, two switch transistor T
1T
2, two clamping diode D
1D
2With two clamping capacitance C
1C
2Consist of, wherein:
The first winding L
1First end and the second winding L
2First end and power supply V
InPositive pole link to each other the first winding L
1The second end and the first switch transistor T
1Drain electrode link to each other the second winding L
2The second end and second switch pipe T
2Drain electrode link to each other the first switch transistor T
1Source electrode and second switch pipe T
2Source electrode and power supply V
InNegative pole link to each other the first clamping diode D
1Anode and second switch pipe D
2Drain electrode link to each other the first clamp diode D
1Negative electrode and the second clamping diode D
2Anode and the first clamping capacitance C
1The second end link to each other the first clamping capacitance C
1First end and the first winding L
1The second end and the first switch transistor T
1Drain electrode link to each other the second clamping diode D
2Negative electrode and the second clamping capacitance C
2First end link to each other the second clamping capacitance C
2The second end and power supply V
InNegative pole link to each other;
The voltage-multiplying circuit unit is by a sustained diode
3, a lifting capacitor C
3With two winding L
3L
4Three consist of, wherein:
Sustained diode
3Anode, the second clamping diode D
2Negative electrode, the second clamping capacitance C
2With tertiary winding L
3First end links to each other, sustained diode
3Negative electrode, output diode D
4Anode and lifting capacitor C
3The second end link to each other tertiary winding L
3The second end and the 4th winding L
4First end links to each other, the 4th winding L
4The second end and lifting capacitor C
3First end links to each other, the first winding L
1First end and tertiary winding L
3First end is the Same Name of Ends of same coupling inductance, the second winding L
2First end and the 4th winding L
4The second end is the Same Name of Ends of same coupling inductance;
Output circuit unit is by output diode D
4, filter capacitor C
4Consist of, wherein:
Output diode D
4Negative electrode, filter capacitor C
4First end and output V
oAnode link to each other output V
oNegative terminal, filter capacitor C
4The second end and the input V
InNegative terminal link to each other.
The high-gain converter that contains voltage doubling unit and improved Interleaved Boost has eight kinds of courses of work, i.e. the first switch transistor T in a switch periods
1Turn-off and the second clamping diode D
2The change of current between opening; Output diode D
4The process of conducting; The second clamping diode D
2Turn off process; Output diode D
4Turn-off and the first switch transistor T
1Commutation course between opening; Second switch pipe T
2Turn-off and the first clamping diode D
1The change of current between opening; Sustained diode
3Turn on process; The first clamping diode D
1Turn off process; Sustained diode
3Turn-off and second switch pipe T
2Commutation course between opening.
The first switch transistor T
1Turn-off and the second clamping diode D
2The change of current between opening:
Before the change of current, circuit is in the first switch transistor T
1, second switch pipe T
2Conducting, the first clamping diode D
1, the second clamping diode D
2Turn-off sustained diode
3Turn-off output diode D
4The stable state of turn-offing.When the first switch transistor T
1During shutoff, the first switch transistor T
1Upper voltage rises rapidly, the second clamping diode D
2The voltage at two ends is dropped rapidly to zero, the second clamping diode D
2Open-minded, because clamping capacitance C
2Effect, the first switch transistor T
1The voltage clamp at two ends is certain voltage value, has realized the first switch transistor T
1Soft clamping turn-off.
Output diode D
4The process of conducting:
The second clamping diode D
2After opening, the second clamping capacitance C
2Voltage rise output diode D from certain value so that certain slope is linear
4The voltage linear at two ends drops to zero, output diode D
4Open-minded, energy begins from the lifting capacitor C
3Transfer to output V with coupling inductance
oCircuit enters the first switch transistor T
1Turn-off the second clamping diode D
2Conducting, output diode D
4The steady-working state of conducting.
The second clamping diode D
2Turn off process:
Output diode D
4After the conducting, the second clamping diode D
2On electric current descend so that certain slope is linear, as the second clamping diode D
2On electric current when dropping to zero, the second clamping diode D
2Naturally turn-off, energy is from the second clamping capacitance C
2, the lifting capacitor C
3Export V with transferring in the coupling inductance
o, circuit enters the first switch transistor T
1Turn-off the second clamping diode D
2Turn-off output diode D
4The steady-working state of conducting.
Output diode D
4Turn-off and the first switch transistor T
1Commutation course between opening:
The first switch transistor T
1Gate signal provide the first switch transistor T
1Electric current rise from zero so that certain slope is linear, realized the first switch transistor T
1Zero current turning-on, output diode D
4Electric current descend so that certain slope is linear, as output diode D
4Electric current when dropping to zero, output diode D
4Turn-off, realized output diode D
4Turn-off and the first switch transistor T
1The change of current between opening has reduced output diode D
4The reverse recovery loss that causes.
Second switch pipe T
2Turn-off and the first clamping diode D
1The change of current between opening:
As second switch pipe T
2During shutoff, second switch pipe T
2On voltage rise rapidly the first clamping diode D
1Both end voltage is dropped rapidly to zero, the first clamping diode D
1Open-minded, because the first clamping capacitance C
1Effect, second switch pipe T
2The voltage clamp at two ends is certain voltage value, has realized second switch pipe T
2Soft clamping turn-off.
Sustained diode
3Turn on process:
The first clamping diode D
1After opening, the first clamping capacitance C
1Voltage rise sustained diode from certain value so that certain slope is linear
3When the both end voltage linearity drops to zero, sustained diode
3Open-minded, energy begins to transfer to boost capacitor C3.Circuit enters second switch pipe T2 and turn-offs, the first clamping diode D1 conducting, the steady-working state of sustained diode 3 conductings.
The first clamping diode D
1Turn off process:
Sustained diode
3After the conducting, the first clamping diode D
1On electric current descend so that certain slope is linear, as the first clamping diode D
1On electric current when dropping to zero, the first clamping diode D
1Naturally turn-off.Circuit enters second switch pipe T
2Turn-off the first clamping diode D
1Turn-off sustained diode
3The stable state of conducting.
Sustained diode
3Turn-off and second switch pipe T
2Commutation course between opening:
Second switch pipe T
2Gate signal provide second switch pipe T
2Electric current rise from zero so that certain slope is linear, realized second switch pipe T
2Zero current turning-on, sustained diode
3Turn-off, realized sustained diode
3Turn-off and second switch pipe T
2The change of current between opening has reduced sustained diode
3The reverse recovery loss that causes.
Claims (1)
1. a high-gain converter that contains voltage doubling unit and improved Interleaved Boost comprises crisscross parallel Boost modified model booster circuit unit, voltage-multiplying circuit unit and output circuit unit, it is characterized in that:
Crisscross parallel Boost improved circuit unit in the converter is by two winding L
1L
2, two switch transistor T
1T
2, two clamping diode D
1D
2With two clamping capacitance C
1C
2Consist of, wherein:
The first winding L
1First end and the second winding L
2First end and power supply V
InPositive pole link to each other the first winding L
1The second end and the first switch transistor T
1Drain electrode link to each other the second winding L
2The second end and second switch pipe T
2Drain electrode link to each other the first switch transistor T
1Source electrode and second switch pipe T
2Source electrode and power supply V
InNegative pole link to each other the first clamping diode D
1Anode and second switch pipe D
2Drain electrode link to each other the first clamp diode D
1Negative electrode and the second clamping diode D
2Anode and the first clamping capacitance C
1The second end link to each other the first clamping capacitance C
1First end and the first winding L
1The second end and the first switch transistor T
1Drain electrode link to each other the second clamping diode D
2Negative electrode and the second clamping capacitance C
2First end link to each other the second clamping capacitance C
2The second end and power supply V
InNegative pole link to each other;
The voltage-multiplying circuit unit is by a sustained diode
3, a lifting capacitor C
3With two winding L
3L
4Three consist of, wherein:
Sustained diode
3Anode, the second clamping diode D
2Negative electrode, the second clamping capacitance C
2With tertiary winding L
3First end links to each other, sustained diode
3Negative electrode, output diode D
4Anode and lifting capacitor C
3The second end link to each other tertiary winding L
3The second end and the 4th winding L
4First end links to each other, the 4th winding L
4The second end and lifting capacitor C
3First end links to each other, the first winding L
1First end and tertiary winding L
3First end is the Same Name of Ends of same coupling inductance, the second winding L
2First end and the 4th winding L
4The second end is the Same Name of Ends of same coupling inductance;
Output circuit unit is by output diode D
4, filter capacitor C
4Consist of, wherein:
Output diode D
4Negative electrode, filter capacitor C
4First end and output V
oAnode link to each other output V
oNegative terminal, filter capacitor C
4The second end and the input V
InNegative terminal link to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320303248 CN203243222U (en) | 2013-05-30 | 2013-05-30 | High-gain converter containing voltage multiplying unit and improved interleaved Boost |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320303248 CN203243222U (en) | 2013-05-30 | 2013-05-30 | High-gain converter containing voltage multiplying unit and improved interleaved Boost |
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| Publication Number | Publication Date |
|---|---|
| CN203243222U true CN203243222U (en) | 2013-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320303248 Expired - Fee Related CN203243222U (en) | 2013-05-30 | 2013-05-30 | High-gain converter containing voltage multiplying unit and improved interleaved Boost |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752364A (en) * | 2014-01-15 | 2014-04-30 | 天水天创科技有限责任公司 | Intelligent central experiment table |
| CN105406751A (en) * | 2015-12-30 | 2016-03-16 | 哈尔滨工业大学 | Three-winding coupling inductance type Z-source inverter circuit with high step-up ratio ability |
| CN106992677A (en) * | 2017-03-22 | 2017-07-28 | 华南理工大学 | A Multi-input High-Gain Z Source Converter Based on Lifting Unit |
| CN107565811A (en) * | 2017-08-10 | 2018-01-09 | 燕山大学 | High-gain Double-input direct-current converter and modulator approach based on switched capacitor network |
| CN108768169A (en) * | 2018-05-04 | 2018-11-06 | 南通科技职业学院 | A kind of fuel cell double coupling alternating expression booster converters and its control method |
| CN113381612A (en) * | 2021-05-10 | 2021-09-10 | 广州金升阳科技有限公司 | Series coupling converter |
| CN115473433A (en) * | 2022-09-13 | 2022-12-13 | 中国矿业大学 | Novel staggered parallel bidirectional DC-DC converter |
| CN115498874A (en) * | 2022-11-16 | 2022-12-20 | 深圳市恒运昌真空技术有限公司 | Superposition type converter based on coupling inductor and control method thereof |
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2013
- 2013-05-30 CN CN 201320303248 patent/CN203243222U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752364A (en) * | 2014-01-15 | 2014-04-30 | 天水天创科技有限责任公司 | Intelligent central experiment table |
| CN105406751A (en) * | 2015-12-30 | 2016-03-16 | 哈尔滨工业大学 | Three-winding coupling inductance type Z-source inverter circuit with high step-up ratio ability |
| CN106992677A (en) * | 2017-03-22 | 2017-07-28 | 华南理工大学 | A Multi-input High-Gain Z Source Converter Based on Lifting Unit |
| CN107565811A (en) * | 2017-08-10 | 2018-01-09 | 燕山大学 | High-gain Double-input direct-current converter and modulator approach based on switched capacitor network |
| CN108768169A (en) * | 2018-05-04 | 2018-11-06 | 南通科技职业学院 | A kind of fuel cell double coupling alternating expression booster converters and its control method |
| CN108768169B (en) * | 2018-05-04 | 2023-08-25 | 南通科技职业学院 | Dual-coupling staggered boost converter for fuel cell and control method thereof |
| CN113381612A (en) * | 2021-05-10 | 2021-09-10 | 广州金升阳科技有限公司 | Series coupling converter |
| CN113381612B (en) * | 2021-05-10 | 2023-07-14 | 广州金升阳科技有限公司 | Series coupling converter |
| CN115473433A (en) * | 2022-09-13 | 2022-12-13 | 中国矿业大学 | Novel staggered parallel bidirectional DC-DC converter |
| CN115498874A (en) * | 2022-11-16 | 2022-12-20 | 深圳市恒运昌真空技术有限公司 | Superposition type converter based on coupling inductor and control method thereof |
| CN115498874B (en) * | 2022-11-16 | 2023-02-03 | 深圳市恒运昌真空技术有限公司 | Superposition type converter based on coupling inductor and control method thereof |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20140530 |