CN105790591A - Hybrid DC converter - Google Patents
Hybrid DC converter Download PDFInfo
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- CN105790591A CN105790591A CN201610264596.5A CN201610264596A CN105790591A CN 105790591 A CN105790591 A CN 105790591A CN 201610264596 A CN201610264596 A CN 201610264596A CN 105790591 A CN105790591 A CN 105790591A
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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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
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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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
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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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention discloses a hybrid DC converter. The hybrid DC converter is formed by connecting a high frequency resonant converter and a dual active bridge converter in parallel, the high frequency resonant converter and the dual active bridge converter are connected end to end orderly, and the high frequency resonant converter comprises a full-bridge inverter A, a high-frequency transformer and an uncontrolled rectifier bridge. The full-bridge inverter A and the uncontrolled rectifier bridge are connected with the head end and the tail end of the high-frequency transformer respectively, the dual active bridge DC converter comprises a full-bridge inverter B, a medium frequency transformer and a fully-controlled rectifier bridge, and the full-bridge inverter B and the fully-controlled rectifier bridge are connected with the head end and the tail end of the medium frequency transformer respectively. The hybrid DC converter of the present invention combines the advantages of the high frequency resonant converter and the dual active bridge DC converter and considers the current capability of a high frequency resonant capacitor, the high frequency resonant converter only realizes the effect of clamping a terminal voltage, and the large-power electric energy transmission completely depends on the dual active bridge DC converter, thereby guaranteeing the stable terminal voltage and the power transmission capability. The converter overall adopts a closed loop PI control strategy.
Description
Technical field
The present invention relates to a kind of DC converter, be specifically related to a kind of mixed type DC converter.
Background technology
Along with the quickening day by day of social development speed, the demand of the energy is improved constantly by the mankind, and the day by day exhausted and social development of fossil energy, to the contradiction between the high demand of the energy, forces people increasingly to pay close attention to the development and utilization of regenerative resource.Utilizing scattered wind energy, solar energy, ocean energy etc. regenerative resource, treatment in accordance with local conditions development distributed power generation (DistributedGeneration, DG), is the important channel realizing " cleaning replaces " and " electric energy replacement ".China's photovoltaic generation capacity is also up to 4GW simultaneously.But being limited to power system digestion capability, major part regenerative resource is not utilized effectively, and " abandoning wind ", " abandoning light " phenomenon even occurs；The generation of electricity by new energy such as wind-powered electricity generation, solar energy has intermittence, randomness feature on the other hand, belongs to fitful power.Along with various extensive regenerative resources access electrical network, traditional electrical circuitry equipment, electric network composition and running technology etc. are more and more unable to do what one wishes in receiving ultra-large regenerative resource, must employ new technology for this, new equipment and new electric network composition to be to meet the profound change of future source of energy general layout.
The electric energy that generation of electricity by new energy produces can be converted to stable high-frequency electrical energy by the direct current energy technology of changing, thus being incorporated to the hybrid-type novel power grid of alternating current-direct current.It it is the good solution solving distributed power generation intermittence, stochastic problems.Along with generation of electricity by new energy is in the continuous rise of China, it is adaptable to the DC converter of high-frequency high-power occasion is also increasingly subject to people's attention, and development in recent years speed is very rapid.
The topological structure of existing high frequency dc to dc converter mainly shifts to full-bridge converter, LLC type high-frequency resonant changer and DAB type DC converter.For three of the above changer, scholars has been carried out substantial amounts of research, but these three DC converter topology has respective defect.Sofe Switch (Soft-switching) characteristic of phase-shifted full-bridge converter is poor, it is difficult to ensure that the high efficiency that changer is overall.LLC type controlled resonant converter can ensure the Sofe Switch characteristic in full-load range, and has constant voltage regulating power, but at high frequencies, power transmission is subject to the restriction of resonant capacitance current capacity.And the power transmission of DAB code converter depends on stable terminal voltage, therefore, the controlling unit of this quasi-converter is often sufficiently complex.
Summary of the invention
For solving the problems referred to above, the invention provides a kind of mixed type DC converter, by high-frequency resonant translation circuit clamp both end voltage, and rely on double; two actively bridge type DC converter to undertake high power transmission, while guaranteed output transmission capacity, simplify control strategy, improve again the overall performance of changer, adopt high-frequency resonant changer and double; two hybrid combinations that actively bridge type DC converter is in parallel.Wherein, high-frequency resonant changer does not undertake high-power power transmission, only serves the effect of clamp both end voltage, it is ensured that changer integral end voltage constant.Put before this, shift to angle by what change brachium pontis correspondence switching tube before and after double; two actively bridge type converters, regulate the power delivery capabilities of integral transformation device.High-frequency resonant changer can realize the Sofe Switch mode of operation of switching tube, therefore adopts high frequency transformer to carry out electrical isolation, while guaranteed efficiency, also improves the power density of changer.Double; two active bridge type DC converters are only capable of realizing the mode of operation (ZVS) that no-voltage is opened under high-power condition.Therefore, adopt intermediate-frequency transformer as isolation link so that loss during high-power power transmission is relatively low.Adopt a simple PI control loop as contact between two changers, to one specified reference value i of output current settings of high-frequency resonant changerref, and it is sampled.Output electric current i when high-frequency resonant changeroWhen exceeding reference value, this signal delta i is fed back to central control system, the switching tube signal of double; two active bridge type converters can be adjusted by system, angle φ is shifted to what increase brachium pontis correspondence switching tube before and after double; two actively bridge type converters, the output electric current of high-frequency resonant changer is controlled in reference value, thus realizing the constant of high-frequency resonant inverter power transmission.The input/output voltage grade of changer is 760V～760V, is widely used in the direct current energy transmission application scenario of current distributed power generation.
For achieving the above object, the technical scheme that the present invention takes is:
A kind of mixed type DC converter, it is made up of high-frequency resonant changer and double; two actively bridge type converters parallel connection, high-frequency resonant changer and double; two actively bridge type converters first places are sequentially connected, and described high-frequency resonant changer includes full-bridge inverter A, high frequency transformer and without control rectifier bridge；Described full-bridge inverter A and without control rectifier bridge be connected on respectively high frequency transformer head and the tail two ends；Described double; two actively bridge type DC converter includes full-bridge inverter B and intermediate-frequency transformer and full-controlled rectifier bridge；Described full-bridge inverter B and full-controlled rectifier bridge are connected on intermediate-frequency transformer head and the tail two ends respectively.
Wherein, described full-bridge inverter A is by a sufficiently large input electric capacity of voltage regulation Cin1With four IGBT switching tube S11、S12、S13、S14Constitute；Described S11And S12After series connection, then with S13And S14Brachium pontis after series connection is in parallel；S11Directly it is connected with high frequency transformer.
Wherein, described high frequency transformer is by a resonant capacitance Cr, a resonant inductance Lr, primary side magnetizing inductance LmAnd an ideal transformer composition；Resonant capacitance is connected with resonant inductance, and magnetizing inductance is connected in parallel on ideal transformer primary side, draws outfan from ideal transformer secondary side two ends；High frequency transformer 4 front end is connected with full-bridge inverter A, and rear end is connected with without control rectifier bridge and constitutes high-frequency resonant changer.
Wherein, described nothing control rectifier bridge includes by diode D11、D12Front brachium pontis in series and by diode D13、D14Rear brachium pontis in series, front brachium pontis and rear brachium pontis are in parallel, and the midpoint lead-out wire of two brachium pontis is connected with the output of high frequency transformer secondary side；Described without control rectifier bridge rear end and output filter capacitor Cout1It is connected.
Wherein, described full-bridge inverter B includes by IGBT switching tube S21With S22First brachium pontis in series and by IGBT switching tube S23And S24Second brachium pontis in series；First brachium pontis and the second brachium pontis are in parallel, and described first brachium pontis and the midpoint of the second brachium pontis are connected with the primary side of intermediate-frequency transformer.
Wherein, described intermediate-frequency transformer is the equivalent structure of physical device, by magnetizing inductance LmIn parallel with ideal transformer thereafter then it is composed in series with primary side leakage inductance L again.
Wherein, described full-controlled rectifier bridge includes by IGBT switching tube S25With S263rd brachium pontis in series, by IGBT switching tube S27And S28Four bridge legs in series；3rd brachium pontis and four bridge legs are in parallel, and the midpoint of the 3rd brachium pontis and four bridge legs and two lead-out wires of high frequency transformer secondary side are respectively connected with, and two brachium pontis midpoints of described full-bridge inverter are connected with the secondary side of intermediate-frequency transformer；Rear end and output filter capacitor Cout2It is connected.
The method have the advantages that
Mixed type high frequency dc to dc converter provided by the invention can realize the no-voltage of the active switching tube of inverter in high-frequency resonant changer in full-load range and open ZVS, the zero-current switching ZCS of rear end rectifier bridge diode, it is possible to be substantially reduced switching loss；
Mixed type high frequency dc to dc converter provided by the invention, owing to have employed high-frequency resonant changer 1 and double; two topological structure that actively bridge type DC converter is in parallel, it is ensured that stablizing of the constant and through-put power of changer entirety both end voltage；
The PI Closed-loop Control Strategy that mixed type high frequency dc to dc converter provided by the invention adopts, it is possible to ensure the ideal Distribution of changer internal power.That is, high-frequency resonant changer through-put power is invariable, and the transmission of remainder power is undertaken by double; two active bridge type DC converters；
High-frequency resonant changer in mixed type high frequency dc to dc converter provided by the invention adopts higher switching frequency so that power transfer efficiency is higher, can effectively reduce the volume of changer, improve power density；
Double; two actively bridge type DC converter terminal voltages in mixed type high frequency dc to dc converter provided by the invention by high-frequency resonant changer clamp, can also simplify control strategy while guaranteed output stable delivery.
Mixed type high frequency dc to dc converter provided by the invention has been provided simultaneously with high-frequency resonant changer and the advantage of double; two actively bridge type DC converter, and efficiency and reliability have had certain lifting.
Accompanying drawing explanation
Fig. 1 is the basic system structure figure of a kind of mixed type DC converter of the embodiment of the present invention.
Fig. 2 is the circuit topological structure figure of a kind of mixed type high frequency dc to dc converter of the embodiment of the present invention.
Fig. 3 is the control strategy block diagram of a kind of mixed type high frequency dc to dc converter of the embodiment of the present invention.
Fig. 4 is the high-frequency resonant converter topology structure chart of a kind of mixed type high frequency dc to dc converter of the embodiment of the present invention.
Fig. 5 is the topology diagram of double; two actively bridge type DC converters of embodiment of the present invention mixed type high frequency dc to dc converter.
Detailed description of the invention
In order to make objects and advantages of the present invention clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
As Figure 1-5, embodiments providing a kind of mixed type DC converter, be made up of high-frequency resonant changer 1 and double; two actively bridge type converters 2 parallel connection, high-frequency resonant changer 1 and double; two actively bridge type converters 2 first place are sequentially connected.Wherein, high-frequency resonant changer 1 primarily serve the purpose of clamp integral transformation device terminal voltage；Double; two active bridge type DC converters 2 primarily serve the purpose of and undertake high-power power transmission.Described high-frequency resonant changer 1 include full-bridge inverter A3, high frequency transformer 4 and without control rectifier bridge 5；Described full-bridge inverter A3 and without control rectifier bridge 5 be connected on respectively high frequency transformer 4 head and the tail two ends；Described double; two actively bridge type DC converter 2 includes full-bridge inverter B6 and intermediate-frequency transformer 7 and full-controlled rectifier bridge 8；Described full-bridge inverter B6 and full-controlled rectifier bridge 8 are connected on intermediate-frequency transformer 7 head and the tail two ends respectively.
As it is shown on figure 3, the output electric current i to high-frequency resonant changer 1oSampling, by sampled value and reference value irefDo in the Δ i input PI controller that after the recovery obtains.What produce brachium pontis correspondence switching tube before and after double; two actively bridge type DC converter 2 shifts to angle φ, the size of this changer through-put power in time.Thus ensureing the constant of high-frequency resonant changer 1 through-put power.
Described full-bridge inverter A3 is by a sufficiently large input electric capacity of voltage regulation Cin1With four IGBT switching tube S11、S12、S13、S14Constitute；Described S11And S12After series connection, then with S13And S14Brachium pontis after series connection is in parallel；S11Directly it is connected with high frequency transformer 4.
Described high frequency transformer 4 is by a resonant capacitance Cr, a resonant inductance Lr, primary side magnetizing inductance LmAnd an ideal transformer composition；Resonant capacitance is connected with resonant inductance, and magnetizing inductance is connected in parallel on ideal transformer primary side, draws outfan from ideal transformer secondary side two ends；High frequency transformer 4 front end is connected with full-bridge inverter A3, and rear end is connected with without control rectifier bridge 5 and constitutes high-frequency resonant changer 1.
Described nothing control rectifier bridge 5 includes by diode D11、D12Front brachium pontis in series and by diode D13、D14Rear brachium pontis in series, front brachium pontis and rear brachium pontis are in parallel, and the midpoint lead-out wire of two brachium pontis is connected with the output of high frequency transformer secondary side；Described without control rectifier bridge 5 rear end and output filter capacitor Cout1It is connected.
Described full-bridge inverter B6 includes by IGBT switching tube S21With S22First brachium pontis in series and by IGBT switching tube S23And S24Second brachium pontis in series；First brachium pontis and the second brachium pontis are in parallel, and the midpoint of described first brachium pontis and the second brachium pontis is connected with the primary side of intermediate-frequency transformer 7.
Described intermediate-frequency transformer 7 is the equivalent structure of physical device, by magnetizing inductance LmIn parallel with ideal transformer thereafter then it is composed in series with primary side leakage inductance L again.
Described full-controlled rectifier bridge 8 includes by IGBT switching tube S25With S263rd brachium pontis in series, by IGBT switching tube S27And S28Four bridge legs in series；3rd brachium pontis and four bridge legs are in parallel, and the midpoint of the 3rd brachium pontis and four bridge legs and two lead-out wires of high frequency transformer secondary side are respectively connected with, and two brachium pontis midpoints of described full-controlled rectifier bridge 8 are connected with the secondary side of intermediate-frequency transformer 7；Rear end and output filter capacitor Cout2It is connected.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (7)
1. a mixed type DC converter, it is characterized in that, it is made up of high-frequency resonant changer (1) and the parallel connection of double; two actively bridge type converters (2), high-frequency resonant changer (1) and double; two actively bridge type converters (2) first place are sequentially connected, and described high-frequency resonant changer (1) includes full-bridge inverter A (3), high frequency transformer (4) and without control rectifier bridge (5)；Described full-bridge inverter A (3) and without control rectifier bridge (5) be connected on respectively high frequency transformer (4) head and the tail two ends；Described double; two actively bridge type DC converter (2) includes full-bridge inverter B (6) and intermediate-frequency transformer (7) and full-controlled rectifier bridge (8)；Described full-bridge inverter B (6) and full-controlled rectifier bridge (8) are connected on intermediate-frequency transformer (7) head and the tail two ends respectively.
2. mixed type DC converter as claimed in claim 1, it is characterised in that described full-bridge inverter A (3) is made up of a sufficiently large input electric capacity of voltage regulation Cin1 and four IGBT switching tube S11, S12, S13, S14；After described S11 and S12 series connection, then the brachium pontis parallel connection after connect with S13 and S14；S11 is directly connected with high frequency transformer (4).
3. mixed type DC converter as claimed in claim 1, it is characterised in that described high frequency transformer (4) is by a resonant capacitance Cr, a resonant inductance Lr, primary side magnetizing inductance Lm and an ideal transformer composition；Resonant capacitance is connected with resonant inductance, and magnetizing inductance is connected in parallel on ideal transformer primary side, draws outfan from ideal transformer secondary side two ends；High frequency transformer (4) front end is connected with full-bridge inverter A (3), and rear end is connected with without control rectifier bridge (5) and constitutes high-frequency resonant changer (1).
4. mixed type DC converter as claimed in claim 1, it is characterized in that, described include the front brachium pontis in series by diode D11, D12 and by diode D13, D14 rear brachium pontis in series without control rectifier bridge (5), front brachium pontis and rear brachium pontis are in parallel, and the midpoint lead-out wire of two brachium pontis is connected with the output of high frequency transformer secondary side；Described nothing control rectifier bridge (5) rear end is connected with output filter capacitor Cout1.
5. mixed type DC converter as claimed in claim 1, it is characterised in that described full-bridge inverter B (6) includes first brachium pontis in series by IGBT switching tube S21 and S22 and by the second brachium pontis in series for IGBT switching tube S23 and S24；First brachium pontis and the second brachium pontis are in parallel, and the midpoint of described first brachium pontis and the second brachium pontis is connected with the primary side of intermediate-frequency transformer (7).
6. mixed type DC converter as claimed in claim 1, it is characterised in that the equivalent structure that described intermediate-frequency transformer (7) is physical device, is then composed in series with primary side leakage inductance L by magnetizing inductance Lm is in parallel with ideal transformer thereafter again.
7. mixed type DC converter as claimed in claim 1, it is characterised in that described full-controlled rectifier bridge (8) includes threeth brachium pontis in series by IGBT switching tube S25 and S26, the four bridge legs in series by IGBT switching tube S27 and S28；3rd brachium pontis and four bridge legs are in parallel, the midpoint of the 3rd brachium pontis and four bridge legs and two lead-out wires of high frequency transformer secondary side are respectively connected with, and two brachium pontis midpoints of described full-controlled rectifier bridge (8) are connected with the secondary side of intermediate-frequency transformer (7)；Rear end is connected with output filter capacitor Cout2..
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| CN201610264596.5A CN105790591B (en) | 2016-04-22 | 2016-04-22 | A kind of mixed type DC converter |
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| CN201610264596.5A CN105790591B (en) | 2016-04-22 | 2016-04-22 | A kind of mixed type DC converter |
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| CN105790591B CN105790591B (en) | 2018-07-27 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106059305A (en) * | 2016-05-23 | 2016-10-26 | 东北电力大学 | Hybrid direct current converter |
| CN106787859A (en) * | 2016-12-29 | 2017-05-31 | 哈尔滨工业大学 | Combined three phase single-stage APFC converters and its control device based on full bridge structure |
| CN107181413A (en) * | 2017-07-15 | 2017-09-19 | 华北电力大学（保定） | Mixed type direct current power electronic transformer |
| CN110557011A (en) * | 2019-09-09 | 2019-12-10 | 西南交通大学 | LLC system of AC/DC hybrid power distribution network and resonance parameter calculation method thereof |
| CN110719035A (en) * | 2019-12-05 | 2020-01-21 | 中南大学 | Topological structure of single-stage DAB-LLC hybrid bidirectional DC-DC converter |
| CN110912412A (en) * | 2019-12-03 | 2020-03-24 | 中国科学院电工研究所 | Direct-current transformer and control method thereof |
| WO2021068640A1 (en) * | 2019-10-08 | 2021-04-15 | 全球能源互联网研究院有限公司 | Dc boost conversion circuit and apparatus |
| CN113162429A (en) * | 2021-04-28 | 2021-07-23 | 山东大学 | Performance improvement control method of DAB-LLC Sigma converter |
| CN114172375A (en) * | 2022-02-10 | 2022-03-11 | 浙江大学杭州国际科创中心 | Direct current converter |
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