CN106787756A - A kind of CL FT CL resonance DC converters - Google Patents
A kind of CL FT CL resonance DC converters Download PDFInfo
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- CN106787756A CN106787756A CN201611244896.3A CN201611244896A CN106787756A CN 106787756 A CN106787756 A CN 106787756A CN 201611244896 A CN201611244896 A CN 201611244896A CN 106787756 A CN106787756 A CN 106787756A
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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
-
- 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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- 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 discloses a kind of CL FT CL resonance DC converters, it is made up of the half-bridge inversion circuit, CL FT CL resonance circuits and the diode rectifier circuit that are sequentially connected, converter is input into by the half-bridge inversion circuit, is exported from the diode rectifier circuit after being acted on through the CL FT CL resonance circuits；The half-bridge inversion circuit is made up of first switch pipe and second switch pipe, and the CL FT CL resonance circuits are made up of the first electric capacity, the second electric capacity, the first inductance, the second inductance, inverse-excitation type high frequency transformer and positive activation type high frequency transformer；The Same Name of Ends of the inverse-excitation type high frequency transformer is not in the same side, the Same Name of Ends of the positive activation type high frequency transformer is located at the same side, the inverse-excitation type high frequency transformer and positive activation type high frequency transformer can widen the power delivery capabilities of converter, the CL FT CL resonance circuits can realize the no-voltage of switching tube open, the zero-current switching of quasi- zero-current switching and diode, and widen the input voltage range and output voltage range of circuit.
Description
Technical field
The invention belongs to a kind of DC converter, especially a kind of efficient, wide input/output bound, high-power " electric capacity
Inductance-flyback transformer-capacitor and inductor (CL-FT-CL) " type resonance DC converter.
Background technology
Present distributed power generation is a kind of emerging energy utilization patterns, compared to traditional extensive centrality fossil energy
Source generation mode, it has the advantages that, and environment-friendly type is high, sustainability strong, low cost, installed capacity is flexibly adjustable, has obtained the country
The extensive concern of outer scholar.DC converter, plays as an important ring of power electronic equipment in distributed generation system
Important role, with various functions such as connection different brackets dc bus, control DC voltage, control battery charging and discharging and work
With becoming a study hotspot at present.
The problems such as to improve energy transfer efficiency, reducing the heat ageing because of thermal losses generation, DC converter is to converter
Conversion efficiency requirement more and more higher so that traditional Boost DC converters and Buck converters etc. can not expire
What foot was increasingly improved applies needs.Therefore, research has the high power DC converter close to 100% efficiency as correlative study
The most important thing.
Resonance DC converter introduces resonant element (capacity cell C, inductance component L) in the converter, using its resonance
Characteristic allow that the device for power switching of converter works under soft switching conditions, drastically increase DC converter
One of conversion efficiency, therefore become the research direction of preferable DC converter.Traditional resonance DC converter includes string
Connection LC converters and parallel connection LC converters, both of which has high efficiency, the characteristic of Sofe Switch, but the former has more difficult tune during underloading
The problems such as section output voltage, there is conversion efficiency during underloading in the latter, and what these problems caused two kinds of converters should
With being restricted.Further, the proposition of the converter such as LLC converters, CLL converters causes that the research of controlled resonant converter is obtained
Development.These converters are by introducing extra resonating device so that converter keeps traditional series and parallel lc circuit advantage
Meanwhile, the shortcoming of traditional circuit presence is overcome, with excellent transform effect.However, these converters are still present
Problems demand is solved, including can not simultaneously realize opening, turning off Sofe Switch for power switch pipe, and efficiency is limited；Input, output electricity
Pressure narrow scope, is not suitable for needing the scene that voltage class is adjusted flexibly；Only single power inverter, it is considered to magnetic element
Saturation problem, converter transimission power is limited etc..Additionally, the controlled resonant converter such as some CLCL, three-level LLC there is also class
Like problem.
The content of the invention
The invention aims to overcome deficiency of the prior art, the conversion effect of controlled resonant converter is further improved
Rate, using power, it is proposed that one kind has the double Sofe Switch of power switch pipe on/off, input/output voltage scope wide, height
The isolated form CL-FT-CL resonance DC converters of power grade, high conversion efficiency.The converter is that a kind of new direct current becomes
Converter circuit topology, it is possible to achieve the no-voltage of power switch pipe opens (Zero voltage switching, ZVS), accurate zero
Switch off current (Quasi-Zero current switching, Quasi-ZCS), and rear class rectification circuit diode zero electricity
Stream shut-off (ZCS), with input wider, output voltage range of application, while ensureing height of the converter in full power range
The features such as efficiency.
The purpose of the present invention is achieved through the following technical solutions：
A kind of CL-FT-CL resonance DCs converter, by the half-bridge inversion circuit, the CL-FT-CL resonance circuits that are sequentially connected
With diode rectifier circuit composition, converter is input into by the half-bridge inversion circuit, through CL-FT-CL resonance circuits effect
Exported from the diode rectifier circuit afterwards；The half-bridge inversion circuit is made up of first switch pipe and second switch pipe, described
CL-FT-CL resonance circuits are by the first electric capacity, the second electric capacity, the first inductance, the second inductance, inverse-excitation type high frequency transformer and normal shock
Formula high frequency transformer is constituted, and the diode rectifier circuit includes the first diode, the second diode, the 3rd diode, the 4th
Diode and the 3rd electric capacity；The Same Name of Ends of the inverse-excitation type high frequency transformer not in the same side, the positive activation type high frequency transformer
Same Name of Ends be located at the same side, the power that the inverse-excitation type high frequency transformer and positive activation type high frequency transformer can widen converter is passed
Movement Capabilities, the CL-FT-CL resonance circuits can realize the no-voltage of switching tube open, the zero of quasi- zero-current switching and diode
Switch off current, and widen the input voltage range and output voltage range of circuit.
In the CL-FT-CL resonance circuits, described first electric capacity one end is connected with the midpoint of the half-bridge inversion circuit,
Primary side of the other end successively with first inductance and the inverse-excitation type high frequency transformer is connected；The original of inverse-excitation type high frequency transformer
Side one end and the first inductance connection, the other end respectively with second electric capacity and second inductance connection；Inverse-excitation type high frequency becomes
Secondary one end of depressor is connected with a midpoint of the diode rectifier circuit, the other end and the positive activation type high frequency transformer
Secondary one end connection；Second electric capacity one end respectively with the primary side and the second inductance connection of inverse-excitation type high frequency transformer, the other end
Source electrode respectively with the second switch pipe, the primary side of positive activation type high frequency transformer are connected；Second inductance one end respectively with flyback
The primary side of formula high frequency transformer and the second capacitance connection, the other end are connected with the primary side of positive activation type high frequency transformer；Positive activation type is high
Primary side one end of frequency power transformer and the second inductance connection, source electrode of the other end respectively with the second electric capacity and second switch pipe are connected；
The secondary of inverse-excitation type high frequency transformer and positive activation type high frequency transformer is coupled in series, and changes the resonant network of circuit,
The resonant frequency of circuit is changed simultaneously, has widened the input voltage range and output voltage range of circuit.
By the electric current of the first electric capacity, the electric current by the second electric capacity and by second in the CL-FT-CL resonance circuits
The electric current of inductance keeps same-phase or phase difference 180 degree near resonance point.
The input voltage range is 350V~600V；Output voltage range is 10V~52V.
Compared with prior art, the beneficial effect that technical scheme is brought is：
1. converter of the present invention can realize the no-voltage of switching tube open, quasi- zero-current switching Sofe Switch, and diode
Zero-current switching Sofe Switch, improve the operating efficiency of converter.
2. converter of the present invention can have voltage regulation limits wider near the second resonance point, it is possible to achieve to defeated
Go out the quick of voltage, wide scope regulation.
3. converter of the present invention has two transformers, can widen inverter power range of application.
4. the main electrical current of CL-FT-CL resonance circuits keeps approximate same-phase near resonance point in converter of the present invention
Or phase difference 180 degree, and preferable sine wave shape is presented, the efficiency of system so can be not only improved, while also causing to adopt
It is more accurate with equivalent fundamental wave method analysis circuit, facilitate the parameter designing of circuit.
5. converter of the present invention can improve working frequency by rational parameter designing, and the power that improve converter is close
Degree.
Brief description of the drawings
Fig. 1 is the topological structure schematic diagram of converter of the present invention；
Fig. 2 is the voltage gain curve of converter of the present invention；
Fig. 3-1 to Fig. 3-4 is respectively the equivalent circuit diagram of the converter course of work of the present invention；
Fig. 4 is the key operation waveforms figure of converter of the present invention；
Fig. 5 is the simulation waveform of converter of the present invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings：
A kind of CL-FT-CL resonance DCs converter, by the half-bridge inversion circuit, CL-FT-CL (the electric capacity electricity that are sequentially connected
Sense-flyback transformer-capacitor and inductor) resonance circuit and diode rectifier circuit composition, converter is by the half-bridge inversion circuit
Input, exports after being acted on through CL-FT-CL resonance circuits from the diode rectifier circuit；In the present embodiment, half-bridge inversion circuit
By first switch pipe S1With second switch pipe S2Composition, CL-FT-CL resonance circuits are by the first electric capacity C1, the second electric capacity C2, first
Inductance L1, the second inductance L2, inverse-excitation type high frequency transformer T1With positive activation type high frequency transformer T2Composition, diode rectifier circuit by
First diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4With the 3rd electric capacity CoComposition, RoIt is load electricity
Resistance.
As shown in figure 1, in described CL-FT-CL resonance circuits, the first electric capacity C1One end and the midpoint of half-bridge inversion circuit
Connection, the other end and the first inductance L1Connection；First inductance L1With the first electric capacity C1Connection, the other end and inverse-excitation type high frequency transformation
Device T1Primary side connection；Inverse-excitation type high frequency transformer T1Primary side one end and the first inductance L1Connection, the primary side other end and the second electricity
Hold C2, the second inductance L2Connection, secondary one end is connected with a midpoint of diode rectifier bridge, and the other end becomes with positive activation type high frequency
Depressor T2Secondary one end connection；Second electric capacity C2One end and inverse-excitation type high frequency transformer T1Primary side, the second inductance L2Connection, separately
One end and second switch pipe S2Source electrode, positive activation type high frequency transformer T2Primary side is connected；Second inductance L2One end and inverse-excitation type high frequency
Transformer T1Primary side, the second electric capacity C2Connection, the other end and positive activation type high frequency transformer T2Primary side is connected；Positive activation type high frequency transformation
Device T2Primary side one end and the second inductance L2Connection, the other end and the second electric capacity C2, second switch pipe S2Source electrode connection.Two changes
The secondary of depressor is coupled in series, and changes the resonant network of circuit, while changing the resonant frequency of circuit, Ke Yiyou
Effect widens the power delivery capabilities of converter, by reasonable design transformation device parameter, that is, changes T1、T2Magnetizing inductance Lm1、Lm2
With around turn(s) ratio n1、n2, L1、L2Inductance, C1、C2Electric capacity can effectively realize the no-voltage of switching tube open, switching tube
The zero-current switching of diode in quasi- zero-current switching and diode rectifier circuit, while can ensure that circuit has input wide defeated
Go out voltage range, can have 350V~600V input voltage ranges, the output voltage range of 10V~52V.Wherein VinIndication circuit
DC input voitage, Lm1、Lm2Inverse-excitation type high frequency transformer T is represented respectively1With positive activation type high frequency transformer T2Equivalent excitation
Inductance.
CL-FT-CL resonance DCs converter has two resonant frequencies, and the magnitude relationship according to frequency can be divided into first
Resonant frequency fr1With the second resonant frequency fr2, wherein fr1Less than fr2.The voltage of resonant type soft-switch converter increases in the present embodiment
Beneficial curve is as shown in Fig. 2 converter is in the second resonance point fr2Nearby obtain voltage gain MvMaximum, MvWith switching frequency
fsContinuation rise rapid decline.Therefore the switching frequency realization that the converter can be by adjusting control signal is defeated to converter
Go out the quick regulation of voltage, with adjustable extent wider, such as in the gain curve shown in Fig. 2, when load is specified bar
When under part, when switching frequency is to higher than resonant frequency fr2Direction raise 20kHz when, Mv quickly will drop to from 1.3 times
0.2 or so, the ability with fasting conditions output voltage.The CL-FT-CL resonant type soft-switches converter is in the second resonant frequency
fr2Can nearby realize that power switch pipe ZVS opens Sofe Switch and Quasi-ZCS shut-off Sofe Switch, and the pole of rectification circuit two
The ZCS soft switchings of pipe.
Main electrical current (the i.e. first electric capacity C of resonance circuit part in the present embodiment converter1Electric current i1, the second electric capacity C2Electricity
Stream iC2With the second inductance L2Electric current i2) approximate same-phase or phase difference 180 degree are kept near resonance point, and presentation is preferable just
String waveform shape, so can not only improve the efficiency of system, while also cause to use equivalent fundamental wave method analysis circuit more accurate,
Facilitate the parameter designing of circuit.
The work equivalent circuit of resonance DC converter and main waveform such as Fig. 3-1 to Fig. 3-4 and Fig. 4 institutes in the present embodiment
Show, t0To t4It is converter in half oscillogram of work period, the operating mode with other half period is full symmetric, repeats no more：
t0、t1、t2、t3、t4The moment between each mode is represented respectively, and PWM1, PWM2 are respectively first switch pipe S1, second switch pipe S2
PWM drive signal.
[the t of mode 10, t1]：This mode equivalent circuit is as shown in figure 3-1.This mode is the dead track of control signal.In t0When
Carve, second switch pipe S2Shut-off, while first switch pipe S1Signal of opening do not arrive also, S1It is held off.Flow through the first electric capacity
C1Electric current be designated as i1, now i1By first switch pipe S1Parasitic diode and stray inductance reverse circulated, first switch pipe
S1Both end voltage remain zero.Second electric capacity C2Electric current iC2Reverse circulated.Flow through the second inductance L2Electric current iL2Reverse flow
It is logical.Transformer T1、T2Secondary current amplitude, direction are identical, are designated as iS, reverse circulated.Diode D2、D3Conducting, circuit is to load
RoPower supply.In t1Moment, first switch pipe S1Conducting, now due to a S1Both end voltage remains zero, and no-voltage opens soft opening
Pass is achieved；While i1、iC2It is zero.
[the t of mode 21, t2]：This mode equivalent circuit is as shown in figure 3-2.In this mode, i1、iC2Start from scratch rising, remaining
Variable keeps former direction constant, participates in circuit resonance.To t2Moment, iSZero is dropped to, that is, flows through diode D2、D3Electric current from
Zero so is dropped to, diode realizes zero-current switching Sofe Switch, and this mode terminates.
[the t of mode 32, t3]：This mode equivalent circuit is as shown in Fig. 3-3.In this mode, iSStart from scratch rising, forward stream
Logical, remaining variables keep former direction constant, continue to participate in circuit resonance.Diode D1、D4Forward conduction.To t3At the moment, flow through
Two inductance L2Electric current i2Zero is risen to, this mode terminates.
[the t of mode 43, t4]：This mode equivalent circuit is as shown in Figure 3-4.In this mode, i2Start from scratch rising, remaining change
Amount keeps former direction constant, continues to participate in circuit resonance.To t4Moment, first switch pipe S1Shut-off, then flows through the electricity of switching tube
Stream direction and size and i1It is identical, i1It is in close proximity to 0, therefore first switch pipe S1Can realize that quasi- zero-current switching is soft
Switch.
So far, end-of-job of the CL-FT-CL resonance DCs converter circuit in half period, into another half period
Work.
Fig. 5 is the simulation waveform of the present embodiment CL-FT-CL resonance DC converters, it can be seen that first switch
Pipe S1Can realize that no-voltage opens Sofe Switch and quasi- zero-current switching Sofe Switch, diode current drops to zero, two poles naturally
Pipe realizes zero-current switching Sofe Switch.Therefore, CL-FT-CL resonance DCs converter has conversion efficiency higher.
The present invention is not limited to embodiments described above.Description to specific embodiment above is intended to describe and says
Bright technical scheme, above-mentioned specific embodiment is only schematical, is not restricted.This is not being departed from
In the case of invention objective and scope of the claimed protection, one of ordinary skill in the art may be used also under enlightenment of the invention
The specific conversion of many forms is made, these are belonged within protection scope of the present invention.
Claims (4)
1. a kind of CL-FT-CL resonance DCs converter, it is characterised in that by the half-bridge inversion circuit, the CL-FT-CL that are sequentially connected
Resonance circuit and diode rectifier circuit are constituted, and converter is input into by the half-bridge inversion circuit, through the CL-FT-CL resonance
Exported from the diode rectifier circuit after circuit function；The half-bridge inversion circuit is by first switch pipe (S1) and second switch
Pipe (S2) composition, the CL-FT-CL resonance circuits are by the first electric capacity (C1), the second electric capacity (C2), the first inductance (L1), second electricity
Sense (L2), inverse-excitation type high frequency transformer (T1) and positive activation type high frequency transformer (T2) composition, the diode rectifier circuit includes the
One diode (D1), the second diode (D2), the 3rd diode (D3), the 4th diode (D4) and the 3rd electric capacity (Co)；It is described anti-
Swash formula high frequency transformer (T1) Same Name of Ends not in the same side, the positive activation type high frequency transformer (T2) Same Name of Ends be located at it is same
Side, the inverse-excitation type high frequency transformer (T1) and positive activation type high frequency transformer (T2) power delivery capabilities of converter, institute can be widened
State CL-FT-CL resonance circuits can realize the no-voltage of switching tube open, the zero-current switching of quasi- zero-current switching and diode,
And widen the input voltage range and output voltage range of circuit.
2. a kind of CL-FT-CL resonance DCs converter according to claim 1, it is characterised in that the CL-FT-CL resonance
In circuit, the first electric capacity (C1) one end is connected with the midpoint of the half-bridge inversion circuit, the other end is successively with described first
Inductance (L1) and the inverse-excitation type high frequency transformer (T1) primary side connection；Inverse-excitation type high frequency transformer (T1) primary side one end with
First inductance (L1) connection, the other end respectively with the second electric capacity (C2) and the second inductance (L2) connection；Inverse-excitation type high frequency
Transformer (T1) secondary one end be connected with a midpoint of the diode rectifier circuit, the other end and the positive activation type high frequency
Transformer (T2) secondary one end connection；Second electric capacity (C2) one end respectively with inverse-excitation type high frequency transformer (T1) primary side and
Two inductance (L2) connection, the other end respectively with the second switch pipe (S2) source electrode, positive activation type high frequency transformer (T2) primary side
Connection；Second inductance (L2) one end respectively with inverse-excitation type high frequency transformer (T1) primary side and the second electric capacity (C2) connection, the other end
With positive activation type high frequency transformer (T2) primary side connection；Positive activation type high frequency transformer (T2) primary side one end and the second inductance (L2)
Connection, the other end respectively with the second electric capacity (C2) and second switch pipe (S2) source electrode connection；Inverse-excitation type high frequency transformer (T1) and
Positive activation type high frequency transformer (T2) secondary be coupled in series, change the resonant network of circuit, and change circuit
Resonant frequency, has widened the input voltage range and output voltage range of circuit.
3. a kind of CL-FT-CL resonance DCs converter according to claim 1, it is characterised in that the CL-FT-CL resonance
Pass through the first electric capacity (C in circuit1) electric current, by the second electric capacity (C2) electric current and by the second inductance (L2) electric current exist
Same-phase or phase difference 180 degree are kept near resonance point.
4. a kind of CL-FT-CL resonance DCs converter according to claim 1, it is characterised in that the input voltage range
It is 350V~600V；Output voltage range is 10V~52V.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611244896.3A CN106787756B (en) | 2016-12-29 | 2016-12-29 | A kind of CL-FT-CL resonance DC converter |
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| CN201611244896.3A CN106787756B (en) | 2016-12-29 | 2016-12-29 | A kind of CL-FT-CL resonance DC converter |
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| CN106787756B CN106787756B (en) | 2019-06-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113224945A (en) * | 2021-04-29 | 2021-08-06 | 北京机械设备研究所 | Topological structure of DC/DC power converter cascaded by Buck + CLCL resonant converters |
| CN114285285A (en) * | 2021-05-10 | 2022-04-05 | 华北电力大学（保定） | Novel wide-voltage gain direct-current transformer based on T-shaped bridge and double transformers |
| CN117200587A (en) * | 2023-11-08 | 2023-12-08 | 中山市宝利金电子有限公司 | Low-power-loss charging pile circuit based on direct power transmission and charging pile |
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| CN104038070A (en) * | 2014-04-15 | 2014-09-10 | 浙江大学 | Transformer primary side series connection LLC and output parallel connection BUCK two-stage converter |
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| US5694304A (en) * | 1995-02-03 | 1997-12-02 | Ericsson Raynet Corporation | High efficiency resonant switching converters |
| CN201733225U (en) * | 2009-12-07 | 2011-02-02 | 浙江大学 | Separated boost converter for realizing forward-flyback by coupling inductances |
| CN104038070A (en) * | 2014-04-15 | 2014-09-10 | 浙江大学 | Transformer primary side series connection LLC and output parallel connection BUCK two-stage converter |
| CN204578376U (en) * | 2015-04-16 | 2015-08-19 | 陕西科技大学 | There is the LLC resonant converter of current-limiting function |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113224945A (en) * | 2021-04-29 | 2021-08-06 | 北京机械设备研究所 | Topological structure of DC/DC power converter cascaded by Buck + CLCL resonant converters |
| CN114285285A (en) * | 2021-05-10 | 2022-04-05 | 华北电力大学（保定） | Novel wide-voltage gain direct-current transformer based on T-shaped bridge and double transformers |
| CN117200587A (en) * | 2023-11-08 | 2023-12-08 | 中山市宝利金电子有限公司 | Low-power-loss charging pile circuit based on direct power transmission and charging pile |
| CN117200587B (en) * | 2023-11-08 | 2024-02-02 | 中山市宝利金电子有限公司 | Low-power-loss charging pile circuit based on direct power transmission and charging pile |
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| Publication number | Publication date |
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| CN106787756B (en) | 2019-06-28 |
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