CN104779807A - LLC resonance transducer applied to distributed power source - Google Patents
LLC resonance transducer applied to distributed power source Download PDFInfo
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- CN104779807A CN104779807A CN201510182033.7A CN201510182033A CN104779807A CN 104779807 A CN104779807 A CN 104779807A CN 201510182033 A CN201510182033 A CN 201510182033A CN 104779807 A CN104779807 A CN 104779807A
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Abstract
The invention discloses an LLC resonance transducer applied to a distributed power source. The LLC resonance transducer comprises a direct-current power supply source (Vin), wherein an inverter circuit is connected to the direct-current power supply source (Vin), a resonance network is connected to the inverter circuit in parallel and is connected with a primary side winding of a transformer in series, and a secondary side winding of the transformer is connected with an output rectification filter circuit. According to the LLC resonance transducer, higher voltage gain can be obtained at the same frequency, and because the improved LLC resonance transducer has the function of promoting currents, under the circumstance that no voltage boosting link of changing an alternating current (AC) to a direct current (DC) exists, the operating frequency of an LLC resonant transducing link can be reduced. When the LLC resonance transducer, provided by the invention, with an auxiliary circuit normally works, the operating state can be improved, and power density and working efficiency are higher.
Description
Technical field
The invention belongs to switch power technology field, particularly relate to a kind of LLC resonant converter be applied in distributed power source.
Background technology
Distributed power supply system is widely used in power source communications system, distributed electrical source power supply system adopts small-power module and extensive control integration circuit to make the basic element of character, utilize latest theories and technological achievement, composition cordwood system type, intelligentized high-power power supply, thus forceful electric power and light current are combined closely, reduce the development pressure of high performance components, higher power device (centralized), enhance productivity.
Pressure or low-voltage distribution system during distributed power source accesses usually, and extensively far-reaching influence can be produced to distribution system.Distributed power source is the important channel promoting the exploitation of the distributing such as wind-powered electricity generation, solar energy regenerative resource, improve clean energy resource utilization ratio, solve remote countryside area supply of electric power problem.Under the background that the current energy and ambient pressure increase day by day, promoting distributed power source development has become one of countries in the world promotion energy-saving and emission-reduction, the important measures tackling climate change.Distributed power source, as the organic component of China's electric power system, is the important supplement of large power supply, with large power supply, bulk power grid organic unity, indispensable.
Distributed power source is generally made up of two parts, and a part is front stage converter, and another part is DC-DC converter.And front stage converter forms primarily of two-stage, prime has the circuit of power factor correction exchanging input, and rear class is the DC-DC converter having direct current to input.As a kind of service subsystem, distributed power source needs higher power density, in order to improve power density, needs higher switching frequency and efficiency, and raising frequency and efficiency can make components and parts volume reduce.Except efficient and high frequency, preceding stage DC-DC converter also requires to have certain retention time, the definition for the retention time: when interchange input disappears, system needs to work 10-20 millisecond in total power situation.In order to reach the requirement of time, preceding stage DC-DC converter needs to be designed to wide region input, and under this design, the operating state of higher input range is much better than the operating state of low input range.
In numerous DC-DC converter, LLC resonant converter is used because of having the input of relative broad range and higher efficiency.And under higher input voltage, for the optimal design of conventional resonance converter be another advantage of LLC converter.In order to better understand the characteristic of LLC resonant converter, Water demand DC voltage gain, this gain can use simple elementary analysis.
In order to meet the condition of retention time in distributed power source, even if require that LLC resonant converter all will ensure that when lower input voltage output voltage does not reduce, therefore LLC resonant converter needs to obtain the voltage gain more taller than normal operating conditions, in order to adapt to higher voltage gain, LLC resonant converter needs to work under away from the operating state of resonance frequency, average efficiency when this state causes the increase of primary current and reduces wide region input.In order to address this problem, need to increase auxiliary circuit, auxiliary current has the ability of motor current, higher gain can be obtained within the retention time, this technical scheme, controlled resonant converter can reach optimal design, and this design makes controlled resonant converter reach higher power density and conversion efficiency.
Summary of the invention
The object of the invention is to solve above-mentioned the problems of the prior art, a kind of LLC resonant converter be applied in distributed power source that can obtain higher power density and efficiency when exchanging input and disappearing within the retention time is provided.
To achieve these goals, the present invention is achieved by the following technical solutions:
A kind of LLC resonant converter be applied in distributed power source, comprise DC power supply, DC power supply is connected with inverter circuit, inverter circuit is parallel with the humorous network that shakes, shake the former limit windings in series of humorous network and transformer, the vice-side winding of transformer connects output rectifier and filter.
Described inverter circuit is the switching network be made up of full bridge inverter or half-bridge inversion circuit.
Described inverter circuit adopts half-bridge inversion circuit, and switching tube adopts metal-oxide-semiconductor, doublet diode and parasitic capacitance between the drain electrode of metal-oxide-semiconductor and source electrode.
Described half-bridge inversion circuit comprises the first switch MOS pipe, second switch metal-oxide-semiconductor, the first body diode, the second body diode, the first parasitic capacitance and the second parasitic capacitance;
The drain electrode of the first switch MOS pipe is connected with the positive pole of DC power supply, and the source electrode of second switch metal-oxide-semiconductor is connected with the negative pole of DC power supply, and ground connection; The source electrode of the first switch MOS pipe is connected with the drain electrode of second switch metal-oxide-semiconductor; First body diode and the first parasitic capacitance in parallel are between the source electrode and drain electrode of the first switch MOS pipe, and the anode of the first body diode is connected with the source electrode of the first switch MOS pipe; Second body diode and the second parasitic capacitance in parallel are between the source electrode and drain electrode of second switch metal-oxide-semiconductor, and the anode of the second body diode is connected with the source electrode of second switch metal-oxide-semiconductor; Resonant network is connected in parallel between the source electrode of second switch metal-oxide-semiconductor and drain electrode.
Described resonant network comprises resonant capacitance, the first resonant inductance and the second resonant inductance; Resonant capacitance and the first resonant inductance are connected on one end of the first transformer primary side winding after connecting, the other end and the resonant capacitance of former limit winding are connected in parallel on the output of inverter circuit; Second resonant inductance is connected in parallel on the two ends of the first transformer primary side winding.
Described output rectifier and filter comprises the first rectifier diode, the second rectifier diode, the 3rd rectifier diode, the 4th rectifier diode, clamp diode, filter capacitor and auxiliary switch; Being connected with the anode of the first rectifier diode with the 3rd rectifier diode with the 3rd filter inductance respectively by the first filter inductance of a vice-side winding of transformer, being connected with the anode of the second rectifier diode with the 4th rectifier diode with the 4th filter inductance respectively by the second filter inductance of another vice-side winding; The drain electrode of auxiliary switch is connected with transformer secondary winding, the negative electrode of the 3rd rectifier diode, the negative electrode of the 4th rectifier diode and the anode of clamp diode are all connected on the source electrode of auxiliary switch, and the negative electrode of the first rectifier diode and the second rectifier diode is all connected on the negative electrode of clamp diode; Filter capacitor is connected in parallel on the two ends of clamp diode.
Compared with prior art, the present invention has following beneficial effect:
Type LLC resonant converter of the present invention, in order to meet the requirement of retention time, even if also can keep normal output voltage in low input or when not having input voltage, this just needs higher voltage gain.And high voltage gain has benefited from auxiliary circuit, this circuit has the function of motor current, when AC-input voltage disappears or reduce, this circuit can make the clamp voltage of diode not reduce, in such cases, the present invention still can keep normal operating state, and ensures that output voltage does not reduce, and ensures the normal conversion efficiency of converter within the retention time.The present invention is by the current boost function of auxiliary circuit, even if LLC resonant converter also can by control and management when not having the switching frequency of relative broad range to need higher voltage gain, this will make LLC resonant converter can be operated near resonance frequency, thus make transformer resonant cavity to reach optimal design, this kind of invention obtain higher power density and efficiency, so can be applied in the power source communications system in distributed power source.The present invention, by increasing auxiliary boost circuit, when guaranteeing the AC-input voltage disappearance in distributed power source, can make output voltage not reduce, and reach higher power density and efficiency within the retention time.
Accompanying drawing explanation
Fig. 1 is front stage converter structure chart in distributed power source.
Fig. 2 is original controlled resonant converter structure chart.
Fig. 3 is the controlled resonant converter topological structure that the present invention proposes.
Fig. 4 is the main oscillogram of the controlled resonant converter that the present invention proposes.
Fig. 5 is the voltage gain curve of K on the impact of converter.
Fig. 6 is the voltage gain curve of Q on the impact of converter.
Fig. 7 is the impact of input and output voltage transfer ratio on voltage gain.
Fig. 8 is efficiency of the present invention and original controlled resonant converter efficiency comparison.
Embodiment
Be described in detail below in conjunction with the concrete enforcement of accompanying drawing to type of the present invention.
Be illustrated in figure 1 distributed power source front stage converter structure chart, this front stage converter is made up of two parts, first be circuit of power factor correction, this correcting circuit is booster circuit, when electric power system incoming transport inputs, by the boosting boosts alternating voltage in PFC stage, the direct current boosting to 400V is intended in the present invention, Part II is then direct current translate phase, VD front portion obtained transforms as the direct current input of this part, this DC/DC power conversion has a variety of topological structure, as PWM hard switching change-over circuit, the LLC resonant converter utilizing soft switch technique is taked in this invention, it is large that this kind of topological structure has power density, conversion efficiency advantages of higher.
As shown in Figure 2, this figure is original LLC resonant converter topological structure, comprises DC power supply Vin, the first switch MOS pipe Q1, body diode Db, the parasitic capacitance C1 of the first switch MOS pipe Q1, second switch metal-oxide-semiconductor Q2, body diode Db, the parasitic capacitance C2 of second switch metal-oxide-semiconductor Q2, resonant capacitance Cr, resonant inductance Lr, magnetizing inductance Lm, isolated form transformer T, the first rectifier diode D3, the second rectifier diode D4, filter capacitor Co, output resistance Ro; The drain electrode of described first switch MOS pipe is connected with DC power supply with the source electrode of second switch metal-oxide-semiconductor, and the source electrode of the first switch MOS pipe is connected with the drain electrode of second switch metal-oxide-semiconductor, the source ground of second switch metal-oxide-semiconductor; Described transformer T former limit winding and resonant capacitance Cr connect, series resonance inductor is the leakage inductance of transformer primary side, parallel resonant inductor is the magnetizing inductance of transformer, transformer T vice-side winding meets the first rectifier diode D3 and the second rectifier diode D4 respectively, vice-side winding parallel filtering electric capacity Co, output loading Ro.
As shown in Figure 3, this figure is type LLC resonant converter topological structure of the present invention, structure according to the known transformer primary side of figure is identical with former controlled resonant converter with connected mode, difference is transformer secondary structure, and transformer secondary winding connects filter inductance, rectifier diode, filter capacitor, auxiliary switch and clamp diode; First vice-side winding meets the first filter inductance L1 and the 3rd filter inductance L3, first and the 3rd rectifier diode and two filter inductances are connected respectively; Second vice-side winding meets the second filter inductance L2 and the 4th filter inductance L4, second and the 4th rectifier diode and two filter inductances are connected respectively; 3rd rectifier diode and clamp diode Dc connect; Auxiliary switch Sc and filter capacitor Co is connected on transformer secondary winding.
The present invention includes a LLC resonant converter circuit, LLC resonant circuit comprises inverter circuit, LLC resonant tank, isolating transformer, and output filter circuit, auxiliary boost circuit, this booster circuit can ensure the increase of voltage gain.DC power supply is the output of prime circuit of power factor correction.The direct-flow input end of LLC resonant tank also receives the output of DC power supply.LLC resonant tank is half-bridge resonance structure.Output filter circuit and auxiliary boost circuit are by transformer coupled.Output filter circuit is capacitor filtering.LLC resonant tank comprises square wave circuit for generating (i.e. inversion half-bridge circuit) and LLC resonant circuit, and the direct-flow input end of square wave circuit for generating is the direct-flow input end of LLC resonant tank; The output of the input termination square wave circuit for generating of LLC resonant circuit, exports termination transformer primary side winding.Series resonant capacitance, series resonance inductor connect with shunt excitation inductance after two ends connect two outputs, shunt excitation inductance and the transformer primary side winding parallel of square wave circuit for generating respectively.Series resonance inductor is the leakage inductance of transformer primary side, and parallel resonant inductor is the magnetizing inductance of transformer.Auxiliary boost circuit and transformer secondary winding connect, and booster circuit is made up of auxiliary switch and diode.
As shown in Figure 4, this figure is type LLC resonant converter key operation waveforms of the present invention, when obtaining this waveform, do following hypothesis:
Input and output voltage must be constant.
Transformer is ideal type transformer, comprises magnetizing inductance Lm, and the former limit number of turn is Np, and the secondary number of turn is Ns.
Switching tube and diode are all ideal types.
This topological structure has ten mode of operations, because the symmetry of topological structure, is only described the first five mode of operation.
Before the to stage, the first switch MOS pipe Q1 will be switched on, and not have Energy Transfer to transformer secondary.
[t
0-t
1] stage: second switch metal-oxide-semiconductor Q2 turned off in the to stage, now, the parasitic capacitance of two switching tubes and resonant circuit composition current circuit, and produce resonance between parasitic capacitance and resonant tank, resonance phenomena makes the parasitic capacitance discharge of the first switch MOS pipe Q1, causes no-voltage, when parasitic capacitance C1 is after zero, first switch MOS pipe Q1 voltage is also zero, and resonance current now flows through the body diode of the first switch MOS pipe Q1, and transformer secondary does not have the transmission of energy.
[t
1-t
2] stage: after the first switch MOS pipe Q1 electric discharge terminates, first switch MOS pipe Q1 and auxiliary switch Sc is open-minded in the t1 moment, first switch MOS pipe Q1 carves that to realize no-voltage open-minded at this moment, iLm can maintain magnetizing inductance, auxiliary circuit promotes resonance current iLr, and the difference of the energy of two electric currents is transferred to the first rectifier diode D3 and auxiliary switch Sc by transformer.
[t
2-t
3] stage: auxiliary switch turned off in the t2 moment, clamp diode Dc and the first rectifier diode D1 conducting, there is provided guiding path to circuit, former limit Energy Transfer is to secondary, and the current i D3 that the t2 moment is stored in the first rectifier diode D3 flows into clamp diode, along with the minimizing of iD3, iD1 increases along with the increase of primary current, now along with the increase of iLr, between Cr and Lr, resonance occurs, the voltage of auxiliary switch is by Dc clamper, and iLm increases along with the change of output voltage.
[t
3-t
4] stage: when iDc is kept to zero, clamp diode Dc turns off, and now resonant inductance Lr and resonant capacitance Cr still has resonance to occur, and when resonance occurs, input Energy Transfer is to load.
[t
4-t
5] stage: the electric current on magnetizing inductance Lm changes along with the generation of resonance between resonant inductance Lr and resonant capacitance Cr, and in this stage, magnetizing inductance Lm participates in resonance, does not have Energy Transfer to secondary.
Be illustrated in figure 5 the impact of k on this controlled resonant converter voltage gain, k is the ratio of magnetizing inductance and resonant inductance, the k value that these invention needs one are less, and therefore require that magnetizing inductance Lm is less, resonant inductance Lr is larger.Generally for and make loss reach minimum, require that the maximum magnetizing inductance Lm in scope reasonable in design is to reduce former limit and secondary side rms current, therefore, under the prerequisite reducing switching frequency range, the loss of efficiency makes to design less magnetizing inductance Lm and not easily realizes, therefore the resonant inductance Lr that value is larger can reduce switching frequency range, and now auxiliary support circuit can reach the optimum target realized within the retention time.
Be illustrated in figure 6 the impact of quality factor q on controlled resonant converter voltage gain, when k can not meet affecting of voltage gain, by regulating Q value to change gain, formula is as follows:
In above formula
N is transformer primary side and secondary turn ratio.
As shown in Figure 7, this figure is that controlled resonant converter output-input voltage ratio is on the impact of voltage gain, in order to obtain output voltage, assuming that DC power supply and output voltage are all constant when switching tube conducting phase and magnetizing inductance are zero, voltage gain is primarily of the reaction of clamp diode waveform, and yield value is following formula:
In above formula, n=N
s/ N
p, B=dt/f
c, fs is the switching frequency of former limit first switch MOS pipe Q1 and second switch metal-oxide-semiconductor Q2, and fc is the switching frequency of secondary-side switch pipe Sc.In the figure 7, magnetizing inductance Lm=5mH is drafted, fs=100kHz, fc=200kHz, when output voltage and input voltage ratio less time, be less than 0.2, voltage gain under four kinds of states is very close, when output voltage and input voltage ratio increase gradually, along with the change of resonant inductance Lr, the change of voltage gain is obvious, as seen from the figure, along with the reduction of resonant inductance Lr, voltage gain increases, and is conducive to the normal work of this invention.
As shown in Figure 8, this figure be power supply disappear after efficiency of the present invention and former controlled resonant converter efficiency between comparison diagram, because invention increases auxiliary current, the boost function of auxiliary current makes converter still can keep normal operating state after power supply disappears, ensure that output voltage does not reduce, thus within the retention time, ensure the normal conversion efficiency of converter.And original controlled resonant converter is not because have the boost function of auxiliary current, normal operating state can not be ensured, thus also decline rapidly at power supply disappearance behind efficiency, until be zero.
Above content is only and technological thought of the present invention is described; protection scope of the present invention can not be limited with this; every technological thought proposed according to the present invention, any change that technical scheme basis is done, within the protection range all falling into claims of the present invention.
Claims (6)
1. one kind is applied in the LLC resonant converter in distributed power source, it is characterized in that: comprise DC power supply (Vin), DC power supply (Vin) is connected with inverter circuit, inverter circuit is parallel with the humorous network that shakes, shake the former limit windings in series of humorous network and transformer, the vice-side winding of transformer connects output rectifier and filter.
2. the LLC resonant converter be applied in distributed power source according to claim 1, is characterized in that: described inverter circuit is the switching network be made up of full bridge inverter or half-bridge inversion circuit.
3. the LLC resonant converter be applied in distributed power source according to claim 1, is characterized in that: described inverter circuit adopts half-bridge inversion circuit, and switching tube adopts metal-oxide-semiconductor, doublet diode and parasitic capacitance between the drain electrode of metal-oxide-semiconductor and source electrode.
4. the LLC resonant converter be applied in distributed power source according to claim 3, is characterized in that: described half-bridge inversion circuit comprises the first switch MOS pipe (Q1), second switch metal-oxide-semiconductor (Q2), the first body diode (Db1), the second body diode (Db2), the first parasitic capacitance (C1) and the second parasitic capacitance (C2);
The drain electrode of the first switch MOS pipe (Q1) is connected with the positive pole of DC power supply, and the source electrode of second switch metal-oxide-semiconductor (Q2) is connected with the negative pole of DC power supply, and ground connection; The source electrode of the first switch MOS pipe (Q1) is connected with the drain electrode of second switch metal-oxide-semiconductor (Q2); First body diode (Db1) and the first parasitic capacitance (C1) are connected in parallel between the source electrode of the first switch MOS pipe (Q1) and drain electrode, and the anode of the first body diode (Db1) is connected with the source electrode of the first switch MOS pipe (Q1); Second body diode (Db2) and the second parasitic capacitance (C2) are connected in parallel between the source electrode of second switch metal-oxide-semiconductor (Q2) and drain electrode, and the anode of the second body diode (Db2) is connected with the source electrode of second switch metal-oxide-semiconductor (Q2); Resonant network is connected in parallel between the source electrode of second switch metal-oxide-semiconductor (Q2) and drain electrode.
5. the LLC resonant converter be applied in distributed power source according to claim 1 or 4, is characterized in that: described resonant network comprises resonant capacitance (Cr), the first resonant inductance (Lr) and the second resonant inductance (Lm); Resonant capacitance (Cr) and the first resonant inductance (Lr) are connected on one end of the first transformer (T1) former limit winding after connecting, the other end and the resonant capacitance (Cr) of former limit winding are connected in parallel on the output of inverter circuit; Second resonant inductance (Lm) is connected in parallel on the two ends of the first transformer (T1) former limit winding.
6. the LLC resonant converter be applied in distributed power source according to claim 1, is characterized in that: described output rectifier and filter comprises the first rectifier diode (D1), the second rectifier diode (D2), the 3rd rectifier diode (D3), the 4th rectifier diode (D4), clamp diode (Dc), filter capacitor (Co) and auxiliary switch (Sc); Being connected with the anode of the first rectifier diode (D1) with the 3rd rectifier diode (D3) with the 3rd filter inductance (L3) respectively by the first filter inductance (L1) of a vice-side winding of transformer, being connected with the anode of the second rectifier diode (D2) with the 4th rectifier diode (D4) with the 4th filter inductance (L4) respectively by the second filter inductance (L2) of another vice-side winding; The drain electrode of auxiliary switch (Sc) is connected with transformer secondary winding, the negative electrode of the 3rd rectifier diode (D3), the negative electrode of the 4th rectifier diode (D4) and the anode of clamp diode (Dc) are all connected on the source electrode of auxiliary switch (Sc), and the negative electrode of the first rectifier diode (D1) and the second rectifier diode (D2) is all connected on the negative electrode of clamp diode (Dc); Filter capacitor (Co) is connected in parallel on the two ends of clamp diode (Dc).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602880A (en) * | 2016-10-28 | 2017-04-26 | 深圳朗兴智能云充有限公司 | Large power high efficiency thermal equilibrium LLC resonant converter and control method thereof |
| CN109889050A (en) * | 2019-03-15 | 2019-06-14 | 哈尔滨工业大学 | Fundamental frequency-frequency multiplication double work mode CLCL resonant mode DC/DC converter |
| CN111614243A (en) * | 2019-02-25 | 2020-09-01 | 宏碁股份有限公司 | Power supply conversion device |
| US11211873B2 (en) | 2019-01-31 | 2021-12-28 | Acer Incorporated | Power conversion device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1545195A (en) * | 2003-11-19 | 2004-11-10 | 南京航空航天大学 | Positive and negative excitation bidirectional DC-DC converter |
| CN1567687A (en) * | 2003-06-24 | 2005-01-19 | 台达电子工业股份有限公司 | Morbid operation preventing device of boosting type converter |
| CN1592066A (en) * | 2003-08-28 | 2005-03-09 | 台达电子工业股份有限公司 | Nondestructive clamp circuit |
| CN101174795A (en) * | 2006-10-30 | 2008-05-07 | 高效电子股份有限公司 | Semi-bridge resonant vibration converter |
| US20090290384A1 (en) * | 2008-05-21 | 2009-11-26 | Flextronics, Ap, Llc | High power factor isolated buck-type power factor correction converter |
| CN102355147A (en) * | 2011-10-28 | 2012-02-15 | 上海大学 | Digital control device and method for LLC (logical link control) synchronously-rectified resonant converter |
| CN102364852A (en) * | 2011-10-24 | 2012-02-29 | 杭州浙阳电气有限公司 | Single switching tube high-grain converter based on coupling inductance voltage-multiplying unit |
| CN203119763U (en) * | 2013-03-30 | 2013-08-07 | 高龙 | Quasi-interweaving parallel high-gain converter with voltage multiplication unit |
| CN103312178A (en) * | 2013-06-13 | 2013-09-18 | 深圳市吉阳自动化科技有限公司 | Bi-directional DC/DC (direct current/direct current) converter and battery testing device applied with same |
| CN103973118A (en) * | 2014-05-04 | 2014-08-06 | 上海索来威新能源技术有限公司 | Efficient isolation converter suitable for low-voltage photovoltaic power generation system and control method of efficient isolation converter |
-
2015
- 2015-04-16 CN CN201510182033.7A patent/CN104779807B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1567687A (en) * | 2003-06-24 | 2005-01-19 | 台达电子工业股份有限公司 | Morbid operation preventing device of boosting type converter |
| CN1592066A (en) * | 2003-08-28 | 2005-03-09 | 台达电子工业股份有限公司 | Nondestructive clamp circuit |
| CN1545195A (en) * | 2003-11-19 | 2004-11-10 | 南京航空航天大学 | Positive and negative excitation bidirectional DC-DC converter |
| CN101174795A (en) * | 2006-10-30 | 2008-05-07 | 高效电子股份有限公司 | Semi-bridge resonant vibration converter |
| US20090290384A1 (en) * | 2008-05-21 | 2009-11-26 | Flextronics, Ap, Llc | High power factor isolated buck-type power factor correction converter |
| CN102364852A (en) * | 2011-10-24 | 2012-02-29 | 杭州浙阳电气有限公司 | Single switching tube high-grain converter based on coupling inductance voltage-multiplying unit |
| CN102355147A (en) * | 2011-10-28 | 2012-02-15 | 上海大学 | Digital control device and method for LLC (logical link control) synchronously-rectified resonant converter |
| CN203119763U (en) * | 2013-03-30 | 2013-08-07 | 高龙 | Quasi-interweaving parallel high-gain converter with voltage multiplication unit |
| CN103312178A (en) * | 2013-06-13 | 2013-09-18 | 深圳市吉阳自动化科技有限公司 | Bi-directional DC/DC (direct current/direct current) converter and battery testing device applied with same |
| CN103973118A (en) * | 2014-05-04 | 2014-08-06 | 上海索来威新能源技术有限公司 | Efficient isolation converter suitable for low-voltage photovoltaic power generation system and control method of efficient isolation converter |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602880A (en) * | 2016-10-28 | 2017-04-26 | 深圳朗兴智能云充有限公司 | Large power high efficiency thermal equilibrium LLC resonant converter and control method thereof |
| US11211873B2 (en) | 2019-01-31 | 2021-12-28 | Acer Incorporated | Power conversion device |
| CN111614243A (en) * | 2019-02-25 | 2020-09-01 | 宏碁股份有限公司 | Power supply conversion device |
| CN111614243B (en) * | 2019-02-25 | 2021-10-22 | 宏碁股份有限公司 | Power supply conversion device |
| CN109889050A (en) * | 2019-03-15 | 2019-06-14 | 哈尔滨工业大学 | Fundamental frequency-frequency multiplication double work mode CLCL resonant mode DC/DC converter |
| CN109889050B (en) * | 2019-03-15 | 2021-07-27 | 哈尔滨工业大学 | Fundamental frequency-frequency multiplication double working mode CLCL resonant DC/DC converter |
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