CN109327136A - Three-level boost type direct current conversion topology based on coupling winding unit - Google Patents
Three-level boost type direct current conversion topology based on coupling winding unit Download PDFInfo
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- CN109327136A CN109327136A CN201811443772.7A CN201811443772A CN109327136A CN 109327136 A CN109327136 A CN 109327136A CN 201811443772 A CN201811443772 A CN 201811443772A CN 109327136 A CN109327136 A CN 109327136A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims abstract description 15
- 230000009466 transformation Effects 0.000 claims description 6
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- 238000000034 method Methods 0.000 claims description 5
- 238000004146 energy storage Methods 0.000 claims description 4
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention belongs to the technical field of DC-DC conversion equipment, and relates to a three-level boost type direct current conversion topology based on a coupling winding unit, which comprises the coupling winding unit, the three-level boost type direct current conversion topology based on the coupling winding unit and a clamping unit, wherein the coupling winding unit comprises a first inductor, a second inductor, a third inductor, a first diode and a second diode; the three-level structure unit comprises a first switch tube, a second switch tube, a first output capacitor, a second output capacitor and a midpoint connecting wire, and the clamping unit comprises a first clamping diode and a second clamping diode; the novel energy-saving device is simple in structure, safe and convenient to use and high in output efficiency, and can achieve 90% of the overall efficiency.
Description
Technical field:
The invention belongs to DC-DC conversion equipment technical fields, are related to a kind of tri-lever boosting based on coupling winding element
Type DC converting topology, the tri-lever boosting type DC converting topology based on coupling winding element of especially a kind of band clamp.
Background technique:
In recent years, be to solve ecological environmental protection and non-renewable energy resources crises problem, using solar energy etc. it is renewable and
The development that clean energy resource forms distributed generation system is swift and violent.But it, cannot since the output voltage of single photovoltaic battery panel is lower
380V DC voltage needed for reaching DC bus, as soon as therefore how to obtain a module for stable high output voltage gain,
Become a urgent problem to be solved.
In existing research, there is the booster circuit of such as tradition boost converter this kind, since its structure is simply easy
It is widely used in control, but is requiring high-power and high voltage gain occasion, be but limited to voltage conversion capability deficiency
The problem of, and the case where be easy to appear limit duty ratio, topological safety cannot ensure.With development in recent years,
There are some addition switched inductors, the modules such as coupling inductance realize the topologys of high boost function, but the topology of this type by
In the presence of leakage inductance and practical matter high power requirements, be still faced with the devices such as switching tube voltage stress it is big the problems such as, and
The power electronic devices of high-power is expensive, and undoubtedly the cost of manufacture of entire topology can in this way increased considerably.?
In existing published technology, CN104967329B discloses a kind of three level zeta of switch coupling inductance type dual bootstrap transformation
Device, the topology can realize the stress for accordingly reducing the devices such as switching tube while current high voltage gain, but used in entirety
The devices such as diode are excessive, and increase an auxiliary switch, to topological whole cost of manufacture and control difficulty all significantly
It is promoted, global instability improves, and is unfavorable for being used in powerful industrial occasions.Therefore, there is an urgent need to design one kind
Tri-lever boosting type DC converting topology based on coupling winding element.
Summary of the invention:
It is an object of the invention to overcome disadvantage of the existing technology, design provide a kind of band clamp based on coupling around
The tri-lever boosting type DC converting topology of group unit, avoids the switching tube limit duty ratio while guaranteeing high voltage gain
Occur, and effectively reduces the voltage stress and usage quantity of corresponding device.
To achieve the goals above, the tri-lever boosting type DC converting topology of the present invention based on coupling winding element
Including coupling winding element, three level translation units and clamp units, wherein coupling winding element is filled simultaneously using coupling winding
This adjustable free factor of the characteristics of electric discharge turn ratio, the function of realization high voltage transfer capability, including the first inductance,
Second inductance, third inductance, first diode and the second diode；First inductance, the second inductance, third inductance turn ratio be
1:n:n, the anode of the Same Name of Ends connection power supply of the first inductance, the other end respectively with the drain electrode of first switch tube, second inductance
The anode of Same Name of Ends and the first clamp diode is connected, and the non-same polarity of the second inductance is connected with the anode of first diode,
The Same Name of Ends of third inductance is connected with the cathode of the anode of the second clamp diode, the second output capacitance respectively, non-same polarity with
The anode of second diode is connected, and the cathode of first diode is connected with the cathode of the first clamp diode, the second diode
Cathode is connected with the cathode of the second clamp diode；Transformation topology is become two parts symmetrical above and below by three-level structure unit,
To reduce the voltage stress of the elements such as switching tube, diode and capacitor, including first switch tube, second switch, the first output
Capacitor, the second output capacitance and midpoint connecting line, first switch tube drain electrode respectively with the non-same polarity of the first inductance and second
The Same Name of Ends of inductance is connected, the source electrode of second switch respectively with power cathode, the cathode of the second clamp diode and the two or two
The cathode of pole pipe is connected, the anode of the first output capacitance respectively with first diode, the first clamp diode and load positive phase
Even, the cathode of the second output capacitance cathode with the anode of the second clamp diode, the Same Name of Ends of third inductance and load respectively
It is connected, the source electrode of first switch tube is connected with the drain electrode of second switch, and defeated with the cathode of the first output capacitance and second
The anode of capacitor is connected together by midpoint connecting line out, and the first output capacitance, the second output capacitance complete the function of energy storage partial pressure,
Control signal of the grid source electrode of first switch tube and second switch to receive external piloting control chip, complete switching tube conducting or
The switching of off state；Clamp units effectively control the due to voltage spikes at the switching tube both ends as caused by leakage inductance energy, and will
Amount guidance promotes the whole efficiency of topology, including the first clamp diode and the second two poles of clamp to outlet side to reduce loss
Pipe；The anode of first clamp diode is connected to the Same Name of Ends of the second inductance, cathode respectively with the cathode of first diode and
The anode connection of first output capacitance, the anode of the second clamp diode are connected to the Same Name of Ends of third inductance, cathode difference
It is connect with the cathode of the cathode of the second diode and the second output capacitance.
First switch tube and second switch of the present invention are all made of the metal-oxide-semiconductor of N-channel.
The present invention realizes the on or off of first switch tube and second switch using unipolar PWM control method,
It can be improved the working efficiency of switching tube, reduce switching loss；In terms of driving signal, the identical driving of high level ratio is selected
Signal, and a driving signal postpones half period, and conducting dutycycle D > 0.5 than another driving signal, makes normal
The state of conducting is presented at least one in two switching tubes in duty cycle.
Transformation topology of the present invention is primarily present four kinds of operating modes within a normal steady-state period: (1) first
Switching tube and second switch are both turned on, and four diodes are turned off, and power supply gives the first induction charging, the first output capacitance and the
Two output capacitances powering load together；(2) first switch tube conducting, second switch cut-off, due to winding element leakage inductance energy
The presence of amount is that the second clamp diode ON operation carries out voltage clamp first, then in the moment of this operating mode operation
Hereafter most of the time, the work of the second diode normally, the first inductance and third inductance start electric discharge to the second output
Capacitor charging, the first output capacitance powering load；Then the operation of operating mode (3) is carried out, at this time first switch tube and the
Two switching tubes return to state when being both turned on once more, identical as operating mode (1)；(4) first switch tube cut-off, second switch
Pipe conducting, since the presence of winding element leakage inductance energy is the first clamp diode first in the moment of this operating mode operation
ON operation carries out voltage clamp, then most of the time hereafter, the work of first diode normally, the first inductance and the
Two inductance start electric discharge and charge to the first output capacitance, the second output capacitance powering load；Within entire steady-state period, topology
Full symmetric characteristic is presented, whole topology is easy to control and implements.
Compared with prior art, the present invention have the advantage that first is that in normal work, when work, switched by two
The turn-on and turn-off of pipe determine 4 kinds of operating modes of DC converting topology, coupling winding element are added to promote global voltage
Transfer capability, the occurrence of adjusting than the double freedom with duty ratio by coupling umber of turn, avoid limit duty ratio,
It realizes the process that coupling winding is constantly charged and discharged, achievees the purpose that high-gain；Second is that using three level translation structures, so that
The stress of the devices such as switching tube, diode and capacitor all accordingly reduces half, can control the difficulty of overall cost and implementation；Three
It is that corresponding two clamp diodes are added, can effectively clamps the due to voltage spikes due to leakage inductance energy bring switching tube, drops
Low-loss, and can effectively guide its energy to rear class outlet side；Its structure is simple, safe and convenient to use, output effect
Rate is high, can achieve 90% overall efficiency.
Detailed description of the invention
Fig. 1 is main body circuit structural schematic diagram of the invention.
Fig. 2 is the schematic diagram of two switch controlled signals of the present invention.
Fig. 3 (a)~(d) is the schematic diagram of 4 kinds of operating modes of DC converting topology of the present invention.
Fig. 4 is the voltage gain contrast curve chart of DC converting topology of the present invention and tradition boost circuit.
Specific embodiment:
The invention will be further described by way of example and in conjunction with the accompanying drawings.
Embodiment:
Tri-lever boosting type DC converting topology based on coupling winding element described in the present embodiment includes: coupling winding list
Member, three level translation units and clamp units, circuit structure are as shown in Figure 1, in which:
Coupling winding element is used to substitute the single energy storage inductor in existing topology, utilizes the charge and discharge simultaneously of coupling winding
This adjustable free factor of feature turn ratio realizes the function of high voltage transfer capability；Coupling winding element includes the
One inductance L1, the second inductance L2, third inductance L3, first diode D1With the second diode D2, the first inductance L1Same Name of Ends connect
Meet power supply VgAnode, the other end respectively with first switch tube S1Drain electrode, the second inductance L2Same Name of Ends, first clamp two poles
Pipe D3Anode be connected, the second inductance L2Non-same polarity and first diode D1Anode be connected, third inductance L3It is of the same name
End respectively with the second clamp diode D4Anode, the second output capacitance C2Cathode be connected, third inductance L3Non-same polarity with
Second diode D2Anode be connected, first diode D1Cathode and the first clamp diode D3Cathode be connected, the two or two pole
Pipe D2Cathode and the second clamp diode D4Cathode be connected, be collectively formed coupling winding together charge and discharge topology work back
Road；
Three level translation units are used to transformation topology becoming two parts symmetrical above and below, to reduce switching tube, diode
With the voltage stress of the elements such as capacitor；Three level translation units mainly include first switch tube S1, second switch S2, it is first defeated
Capacitor C out1, the second output capacitance C2With midpoint connecting line；Wherein, first switch tube S1Drain electrode and the first inductance L1It is non-same
Name end and the second inductance L2Same Name of Ends be connected, second switch S2Source electrode respectively with power supply VgCathode, the second clamp diode
D4Cathode and the second diode D2Cathode be connected, the first output capacitance C1Anode respectively with first diode D1, the first pincers
Position diode D3And load R anode is connected, the second output capacitance C2Cathode respectively with the second clamp diode D4Anode,
Three inductance L3Same Name of Ends and load R cathode be connected, first switch tube S1Source electrode and second switch S2Drain electrode be connected,
And with the first output capacitance C1Cathode and the second output capacitance C2Anode connected together by midpoint connecting line, two capacitors
Complete the function of energy storage partial pressure；First switch tube S1With second switch S2Control of the grid source electrode to receive external piloting control chip
Signal processed completes the switching of switching tube on or off state；
Clamp units draw energy for effectively controlling the due to voltage spikes at the switching tube both ends as caused by leakage inductance energy
It is directed at outlet side, to reduce loss, promotes the whole efficiency of topology；Clamp units include the first clamp diode D3With the second pincers
Position diode D4；Wherein, the anode of the first clamp diode D3 is connected to the second inductance L2Same Name of Ends, cathode is respectively with
One diode D1Cathode and the first output capacitance C1Anode connection, the second clamp diode D4Anode be linked at third electricity
Feel L3Same Name of Ends, cathode respectively with the second diode D2Cathode and the second output capacitance C2Cathode connection.
The schematic diagram of two switch controlled signals is as shown in Fig. 2, it is used in the topology of DC converting described in the present embodiment
Unipolar PWM control method realizes first switch tube S1With second switch S2On or off, can be improved switching tube
Working efficiency reduces switching loss；In terms of driving signal, the identical driving signal of high level ratio, and a drive are selected
Dynamic signal than postponing half period, and conducting dutycycle D > 0.5, is realized in normal workweek with this than another driving signal
The state of conducting is presented at least one in two switching tubes in phase.
DC converting topology described in the present embodiment is primarily present within a normal steady-state period such as Fig. 3 (a)~(d)
Shown in 4 kinds of operating modes: as first switch tube S1With second switch S2It is at this time operating mode 1 when being both turned on, four two
Pole pipe is turned off, power supply VgGive inductance L1Charging, the first output capacitance C1With the second output capacitance C2Load R power supply is given together；When
First switch tube S1Conducting, second switch S2It is at this time operating mode 2, due to depositing for winding element leakage inductance energy when cut-off
It is being the second clamp diode D first in the moment of this operating mode operation4ON operation carries out voltage clamp, then hereafter
Most of the time, the second diode D2Normally work, the first inductance L1With third inductance L3Start electric discharge to the second output
Capacitor C2Charging, the first output capacitance C1Give load R power supply；Then the operation of operating mode 3 is carried out, at this time first switch tube S1
With second switch S2State when being both turned on is returned to once more, it is identical as operating mode 1；As first switch tube S1Cut-off, second
Switching tube S2It is at this time operating mode 4 when conducting, also due to the presence of winding element leakage inductance energy, is transported in this operating mode
Capable moment is the first clamp diode D first3ON operation carries out voltage clamp, then the most of the time hereafter, and first
Diode D1Normally work, the first inductance L1With the second inductance L2Start electric discharge to the first output capacitance C1Charging, second is defeated
Capacitor C out2Powering load；Within entire steady-state period, topology is presented full symmetric characteristic, whole topology be easy to control and
Implement.
DC converting topology described in the present embodiment is compared with conventional topologies, voltage gain correlation curve such as Fig. 4 institute
Show, when requiring output voltage to be converted to 10 times of input voltage, if the output voltage according to existing underlying topology expresses Formula Vo
=Vg/ (1-D) will reach 10 times of voltage gains of requirement, need its duty ratio to reach 0.9, switching tube has been in the limit at this time
State influences whole work efficiency, and can generate biggish damage to related device；The topology of DC converting described in the present embodiment
The expression formula of input and output voltage relationship is Vo=(2nD-n+1) * Vg/ (1-D) will reach 10 times of voltage gains of requirement, work as coupling
When closing umber of turn ratio n=3, duty ratio need to only reach 0.75, and with the raising of coupling umber of turn ratio, account for
The size of empty ratio can also decrease, and in this way while realizing high voltage gain, avoid switching tube limit duty ratio
In the presence of, ensured topology overall security；And by DC converting topology described in the present embodiment output voltage be 400V, function
Experimental verification is carried out under the requirement that rate is 1KW, efficiency can achieve 90%.
The present embodiment by above-mentioned analysis and the experimental results showed that, the DC converting topology have significantly promotes voltage
The ability of ratio is converted, and the voltage stress of related device can be effectively reduced, greatly reduces loss, improves overall conversion effect
Rate, the rear class DC voltage being highly suitable in grid-connected promote circuit.
Claims (4)
1. a kind of tri-lever boosting type DC converting topology based on coupling winding element, it is characterised in that it is described based on coupling around
The tri-lever boosting type DC converting topology of group unit includes coupling winding element, three level translation units and clamp units,
Middle coupling winding element is realized high using this adjustable free factor of turn ratio the characteristics of coupling winding charge and discharge simultaneously
The function of voltage conversion capability, including the first inductance, the second inductance, third inductance, first diode and the second diode；First
Inductance, the second inductance, third inductance turn ratio be 1:n:n, the anode of the Same Name of Ends connection power supply of the first inductance, the other end point
Be not connected with the anode of the drain electrode of first switch tube, the Same Name of Ends of the second inductance and the first clamp diode, the second inductance it is non-
Same Name of Ends is connected with the anode of first diode, the Same Name of Ends of third inductance respectively with the anode of the second clamp diode,
The cathode of two output capacitances is connected, and non-same polarity is connected with the anode of the second diode, the cathode of first diode and the first pincers
The cathode of position diode is connected, and the cathode of the second diode is connected with the cathode of the second clamp diode；Three-level structure unit
Transformation topology is become into two parts symmetrical above and below, to reduce switching tube, diode and the voltage stress of capacitor, including first opens
Guan Guan, second switch, the first output capacitance, the second output capacitance and midpoint connecting line, the drain electrode of first switch tube respectively with
The Same Name of Ends of the non-same polarity of first inductance and the second inductance be connected, the source electrode of second switch respectively with power cathode, second
The cathode of the cathode of clamp diode and the second diode is connected, the anode of the first output capacitance respectively with first diode, the
One clamp diode with load anode be connected, the cathode of the second output capacitance respectively with the anode of the second clamp diode, third
The Same Name of Ends of inductance is connected with the cathode of load, and the source electrode of first switch tube is connected with the drain electrode of second switch, and with
The anode of the cathode of one output capacitance and the second output capacitance is connected together by midpoint connecting line, the first output capacitance, second defeated
The grid source electrode of the function of capacitor completion energy storage partial pressure out, first switch tube and second switch is to receive external piloting control chip
Signal is controlled, the switching of switching tube on or off state is completed；Clamp units are effectively controlled and are switched as caused by leakage inductance energy
The due to voltage spikes at pipe both ends, and energy is guided to outlet side promotes the whole efficiency of topology to reduce loss, including the
One clamp diode and the second clamp diode；The anode of first clamp diode is connected to the Same Name of Ends of the second inductance, bears
Pole is connect with the anode of the cathode of first diode and the first output capacitance respectively, and the anode of the second clamp diode is connected to the
The Same Name of Ends of three inductance, cathode are connect with the cathode of the cathode of the second diode and the second output capacitance respectively.
2. the tri-lever boosting type DC converting topology based on coupling winding element according to claim 1, it is characterised in that
The first switch tube and second switch are all made of the metal-oxide-semiconductor of N-channel.
3. the tri-lever boosting type DC converting topology based on coupling winding element according to claim 1, it is characterised in that
The on or off that first switch tube and second switch are realized using unipolar PWM control method, can be improved switching tube
Working efficiency, reduce switching loss；In terms of driving signal, the identical driving signal of high level ratio, and one are selected
Driving signal postpones half period, and conducting dutycycle D > 0.5 than another driving signal, makes working normally in the period two
The state of conducting is presented at least one in switching tube.
4. the tri-lever boosting type DC converting topology based on coupling winding element according to claim 1, it is characterised in that
The transformation topology is within a normal steady-state period, and be primarily present four kinds of operating modes: (1) first switch tube and second is opened
It closes pipe to be both turned on, four diodes are turned off, and power supply gives the first induction charging, and the first output capacitance and the second output capacitance are together
Powering load；(2) first switch tube conducting, second switch cut-off, due to the presence of winding element leakage inductance energy, in this work
The moment of operation mode operation is that the second clamp diode ON operation carries out voltage clamp first, then when major part hereafter
Between, the work of the second diode normally, the first inductance and third inductance start electric discharge and charge to the second output capacitance, and first is defeated
Capacitor powering load out；Then the operation of operating mode (3) is carried out, first switch tube and second switch are returned once more at this time
It is identical as operating mode (1) to state when being both turned on；(4) first switch tube cut-off, second switch conducting, due to winding
The presence of unit leakage inductance energy is that the first clamp diode ON operation carries out electricity first in the moment of this operating mode operation
Pressure clamp, then the most of the time hereafter, the work of first diode normally, the first inductance and the second inductance start to discharge
It charges to the first output capacitance, the second output capacitance powering load；Within entire steady-state period, topology presents full symmetric
Characteristic, whole topology are easy to control and implement.
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| CN201811443772.7A CN109327136B (en) | 2018-11-29 | 2018-11-29 | Three-level boosting type direct current conversion topology based on coupling winding unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112713769A (en) * | 2020-12-29 | 2021-04-27 | 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 |
| CN113410990A (en) * | 2021-07-30 | 2021-09-17 | 南京信息工程大学 | High-efficiency high-gain quasi-Z-source soft switching DC-DC converter |
| CN113839557A (en) * | 2021-08-24 | 2021-12-24 | 深圳航天科技创新研究院 | Wide voltage range boost conversion topology |
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| CN103354420A (en) * | 2013-06-18 | 2013-10-16 | 中国航天科工集团第三研究院第八三五七研究所 | Active clamping high gain boost converter using coupling inductor |
| CN103944384A (en) * | 2014-04-18 | 2014-07-23 | 南京航空航天大学 | Coupling inductance high-gain active network boost converter |
| CN104242626A (en) * | 2014-10-16 | 2014-12-24 | 青岛理工大学 | Boost-flyback converter with built-in switch coupling inductor |
| CN207010548U (en) * | 2017-04-28 | 2018-02-13 | 深圳市汇川技术股份有限公司 | A kind of double down volt circuit |
| CN107453606A (en) * | 2017-07-26 | 2017-12-08 | 广州金升阳科技有限公司 | A kind of three level Boost circuits |
| CN107517003A (en) * | 2017-08-31 | 2017-12-26 | 江苏大学 | One kind output inputs high-gain Boost translation circuits and switching method in parallel floatingly |
| CN208971387U (en) * | 2018-11-29 | 2019-06-11 | 青岛理工大学 | Three-level boost type direct current conversion topology based on coupling winding unit |
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| CN112713769A (en) * | 2020-12-29 | 2021-04-27 | 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 |
| 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 |
| CN113410990A (en) * | 2021-07-30 | 2021-09-17 | 南京信息工程大学 | High-efficiency high-gain quasi-Z-source soft switching DC-DC converter |
| CN113839557A (en) * | 2021-08-24 | 2021-12-24 | 深圳航天科技创新研究院 | Wide voltage range boost conversion topology |
| CN113839557B (en) * | 2021-08-24 | 2024-04-09 | 深圳航天科技创新研究院 | Boost conversion topology with wide voltage range |
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