CN107171576A - A kind of voltage doubling rectifing circuit and its application in resonance isolated converter - Google Patents

A kind of voltage doubling rectifing circuit and its application in resonance isolated converter Download PDF

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Publication number
CN107171576A
CN107171576A CN201710435858.4A CN201710435858A CN107171576A CN 107171576 A CN107171576 A CN 107171576A CN 201710435858 A CN201710435858 A CN 201710435858A CN 107171576 A CN107171576 A CN 107171576A
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Prior art keywords
diode
circuit
electric capacity
doubling rectifing
voltage doubling
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CN201710435858.4A
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CN107171576B (en
Inventor
王浩宇
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ShanghaiTech University
University of Shanghai for Science and Technology
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University of Shanghai for Science and Technology
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/06Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
    • H02M7/10Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode arranged for operation in series, e.g. for multiplication of voltage
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M3/00Conversion of dc power input into dc power output
    • H02M3/22Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28Conversion 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
    • H02M3/325Conversion 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
    • H02M3/335Conversion 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
    • H02M3/33507Conversion 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
    • H02M3/33523Conversion 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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10Technologies 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

Abstract

The invention provides a kind of voltage doubling rectifing circuit, it is characterised in that including diode D1、D2、D3、D4、D5、D6、D7、D8, electric capacity C1、C2、C3、C4、C5、C6With 1 load.Another technical scheme of the present invention there is provided a kind of resonance isolated converter, including transformer, transformer primary side circuit is full-bridge LLC resonance circuits, it is characterised in that transformer secondary circuit is above-mentioned voltage doubling rectifing circuit or above-mentioned restructural voltage doubling rectifing circuit.Circuit structure proposed by the invention can very effectively improve conversion efficiency of the traditional LLC resonance circuit in the wide output scene of high pressure.The secondary side rectification circuit proposed simultaneously can deduce out a variety of restructural voltage doubling rectifing circuits, meet the wide output of different grades of high pressure and require.This kind of restructural rectification circuit proposed is equally applicable in wide input circuit.

Description

A kind of voltage doubling rectifing circuit and its application in resonance isolated converter
Technical field
The present invention relates to a kind of voltage doubling rectifing circuit, more particularly to a kind of six voltage doubling rectifing circuit or restructural voltage multiplying rectifier Circuit.The invention further relates to the resonance isolated variable of a kind of above-mentioned voltage doubling rectifing circuit of application or restructural voltage doubling rectifing circuit Device.
Background technology
With the continuous innovation of Power Electronic Technique, the performance in terms of high efficiency, low-power consumption for DC Switching Power Supplies It is required that also improving constantly.And LLC resonant converter has simple in construction, convenient control due to it, high conversion efficiency is easily realized The advantages of no-voltage of switching tube opens (ZVS) and widely applied.
In some practical applications, D/C power needs to provide wide output voltage range, and with good output voltage Regulation performance.However, input voltage is constant, in the case of output voltage range ultra-wide, the conversion efficiency of LLC resonant converter It can substantially reduce.This is due to LLC resonant converter for frequency modulation(PFM) topology, when being deployed to Width funtion gain ranging and applying, Its switching frequency needs a very wide adjustable range (as shown in Figure 1).And with switching frequency off-resonance frequency, it is changed Obvious decay occurs in efficiency.
On the other hand, the secondary of LLC resonant converter often uses conventional bridge rectifier structure.Based on the fact that:A) bridge The voltage stress of the diode of formula rectifier be equal to output voltage, b) high voltage power diode exist manufacturing process it is still immature, The problems such as high expensive, in high output voltage application, bridge rectifier is not considered as preferred scheme.
To sum up, the LLC resonance circuits based on conventional bridge rectifier are applied under high pressure, wide output scene, existed all The problem of many urgent need to resolve.
The content of the invention
The technical problem to be solved in the present invention is:LLC resonant converter based on conventional bridge rectifier is defeated in high pressure, width The limitation gone out in range applications.
In order to solve the above-mentioned technical problem, a technical scheme of the invention there is provided a kind of voltage doubling rectifing circuit, its It is characterised by, including diode D1、D2、D3、D4、D5、D6、D7、D8, electric capacity C1、C2、C3、C4、C5、C6, wherein:Electric capacity C1And electric capacity C4It is connected on diode D2Positive pole and diode D5Between negative pole, diode D1Negative pole and diode D2Positive pole is connected, diode D1 Positive pole is connected to electric capacity C2Lower pin, electric capacity C2Upper pin and diode D3Positive pole and diode D2Negative pole is connected, electric capacity C5Upper pin and electric capacity C2Lower pin is connected with the upper port of transformer, electric capacity C5Lower pin connection diode D5Positive pole with And diode D6Negative pole, diode D4Positive pole and diode D5Negative pole is connected, diode D4Negative pole and electric capacity C5Upper pin is connected, and two Pole pipe D7Positive pole and diode D8Negative pole is connected, and is connected on diode D3Positive pole and diode D6Between negative pole, electric capacity C3And electricity Hold C6It is connected on diode D3Negative pole and diode D6Between positive pole, the lower port of transformer connects electric capacity C simultaneously1Lower pin, Diode D7Positive pole and electric capacity C3Lower pin, diode D3Negative pole is power supply positive output end, diode D6Just extremely power supply bear it is defeated Go out end.
Preferably, the electric capacity C1By switching S between lower pin and the transformer lower port5It is connected, formation can be weighed Structure voltage doubling rectifing circuit.
Preferably, the switch S5Connected and formed by two MOSFET pipes.
Preferably, the diode D7Positive pole is with the transformer lower port by switching S6It is connected, forms restructural times Voltage rectifier.
Preferably, the switch S6Connected and formed by two MOSFET pipes.
Preferably, in the diode D2Negative pole and the electric capacity C2Upper pin between tandem tap S7, in two pole Pipe D5Positive pole and the electric capacity C5Lower pin between tandem tap S8, form restructural voltage doubling rectifing circuit.
Preferably, the switch S7And the switch S8Managed using single MOSFET.
Another technical scheme of the present invention there is provided a kind of resonance isolated converter, including transformer, transformer primary Side circuit is full-bridge LLC resonance circuits, it is characterised in that transformer secondary circuit is above-mentioned voltage doubling rectifing circuit or above-mentioned Restructural voltage doubling rectifing circuit.
Circuit structure proposed by the invention can very effectively improve traditional LLC resonance circuit in the wide output scene of high pressure In conversion efficiency it is low the problem of.Meanwhile, the secondary side rectification circuit proposed can deduce out a variety of restructural voltage multiplying rectifier electricity Road, is required with meeting the wide output of different grades of high pressure.This kind of restructural rectification circuit proposed is equally applicable for wide input In circuit.With reference to the primary side input circuit of different structure, the new-type circuit of formation can meet different wide input circuits well The requirement of grade.
Brief description of the drawings
Fig. 1 is voltage gain and the corresponding relation of working frequency in traditional LLC circuit;
Fig. 2 be embodiment 1 in resonance isolated converter circuit diagram;
Fig. 3 a be embodiment 2 in resonance isolated converter circuit diagram;
Fig. 3 b be embodiment 2 in restructural voltage doubling rectifing circuit switch S5Equivalent circuit diagram after closure;
Fig. 3 c be embodiment 2 in restructural voltage doubling rectifing circuit switch S5Equivalent circuit diagram after disconnection;
Fig. 4 a be embodiment 3 in resonance isolated converter circuit diagram;
Fig. 4 b be embodiment 3 in restructural voltage doubling rectifing circuit switch S5Closure, switch S6Equivalent circuit after disconnection Figure;
Fig. 4 c be embodiment 3 in restructural voltage doubling rectifing circuit switch S5Disconnect, switch S6Equivalent circuit after closure Figure;
Fig. 4 d be embodiment 3 in restructural voltage doubling rectifing circuit switch S5Disconnect, switch S6Equivalent circuit after disconnection Figure;
Fig. 5 is the switch S in embodiment 3 and embodiment 35And switch S6Schematic diagram;
Fig. 6 a be embodiment 4 in resonance isolated converter circuit diagram;
Fig. 6 b be embodiment 4 in restructural voltage doubling rectifing circuit switch S7Disconnect, switch S8Equivalent circuit after disconnection Figure;
Fig. 6 c be embodiment 4 in restructural voltage doubling rectifing circuit switch S7Closure, switch S8Equivalent circuit after disconnection Figure;
Fig. 6 d be embodiment 4 in restructural voltage doubling rectifing circuit switch S7Closure, switch S8Equivalent circuit after closure Figure;
Fig. 7 is voltage gain and the corresponding relation of working frequency in 2 circuits of implementation;
Fig. 8 is voltage gain and the corresponding relation of working frequency in 3 circuits of implementation;
Fig. 9 is voltage gain and the corresponding relation of working frequency in 4 circuits of implementation.
Embodiment
To become apparent the present invention, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
Embodiment 1
As shown in Fig. 2 a kind of resonance isolated converter disclosed in the present embodiment includes transformer, transformer primary side circuit is Conventional full bridge LLC resonance circuits, secondary circuit is six voltage doubling rectifing circuits.
The topological structure of six voltage doubling rectifing circuit includes 8 diodes, 6 electric capacity and 1 load R, and specific connection is closed System is described as follows:Electric capacity C1And C4It is connected on diode D2Positive pole and diode D5Between negative pole, diode D1Negative pole and diode D2Positive pole is connected, diode D1Positive pole is connected to electric capacity C2Lower pin, electric capacity C2Upper pin and diode D3Positive pole and two Pole pipe D2Negative pole is connected, electric capacity C5Upper pin and electric capacity C2Lower pin is connected with the upper port of transformer, electric capacity C5Lower pin Connect diode D5Positive pole and diode D6Negative pole, diode D4Positive pole and diode D5Negative pole is connected, diode D4Negative pole with Electric capacity C5Upper pin is connected, diode D7Positive pole and diode D8Negative pole is connected, and is connected on diode D3Positive pole and diode D6It is negative Between pole, electric capacity C3With electric capacity C6It is connected on diode D3Negative pole and diode D6Between positive pole, the lower port of transformer connects simultaneously Meet electric capacity C1Lower pin, diode D7Positive pole and electric capacity C3Lower pin, diode D3Negative pole is power supply positive output end, two poles Pipe D6Just extremely power supply negative output terminal.
The circuit topology of six voltage doubling rectifing circuits proposed by the invention has the working effect of six voltage doubling rectifing circuits.Again With reference to the primary circuit and transformer turns ratio of different structure, the requirement of high output voltage can be met well.Meanwhile, in order to more The requirement of wide output voltage range is met well and ensures the high conversion efficiency under the conditions of full output area, and the present invention is being proposed Circuit base on deduced out three kinds of novel circuit configurations disclosed in following examples again.
Embodiment 2
As shown in Figure 3 a, the present embodiment and the difference of embodiment 1 are:By script electric capacity C1Lower pin and transformer lower end The connected point of mouth disconnects, by switching S5It is attached.With reference to Fig. 5, S is switched5Connected and formed by two MOSFET pipes.
As shown in Figure 3 b, as switch S5During closure, secondary circuit is equivalent to six voltage doubling rectifing circuits.As shown in Figure 3 c, when Switch S5During disconnection, secondary circuit is equivalent to four voltage doubling rectifing circuits.Wherein, when the circuit is operating, the secondary circuit proposed Compared with traditional four multiplication of voltage and six voltage-multiplying circuits, any device is not increased.Thus, propose that circuit will not increase extra device Loss.For the circuit proposed, by the conversion of secondary circuit structure, the model of wide output voltage can be ensured well Enclose requirement.
The input voltage of circuit disclosed in the present embodiment is set to 390V, and resonant frequency is set to 100kHz, output voltage range It is set to [500V, 1100V].As shown in fig. 7, corresponding switching frequency adjustable range is [72kHz, 129kHz].Relative to based on For the traditional LLC resonance circuit of bridge rectifier, in the case of identical output voltage range, the scope of switching frequency is smaller.Switch Sweep range is near resonance point, it is ensured that the high conversion efficiency of integrated circuit.
Embodiment 3
As shown in fig. 4 a, the present embodiment and the difference of embodiment 2 are:By diode D7Positive pole and transformer lower port phase Point even disconnects, by switching S6It is attached.With reference to Fig. 5, S is switched6Same connected by two MOSFET pipes is formed.
As shown in Figure 4 b, as switch S5Closure and switch S6During disconnection, secondary circuit is equivalent to six voltage doubling rectifing circuits.Such as Shown in Fig. 4 c, as switch S5Disconnect and switch S6During closure, secondary circuit is equivalent to four voltage doubling rectifing circuits.As shown in figure 4d, when Switch S5Disconnect and switch S6During disconnection, secondary circuit is equivalent to two voltage doubling rectifying circuit.Relative to the circuit shown in embodiment 2, It can further widen the scope of output voltage.
The input voltage of circuit disclosed in the present embodiment is set to 390V, and resonant frequency is set to 100kHz, output voltage range It is set to [260V, 950V].As shown in figure 8, corresponding switching frequency adjustable range is [85kHz, 118kHz].Relative to embodiment For circuit in 2, output voltage range is wider, and switching frequency range is smaller, and switching frequency hunting range is closer to humorous Shake a little, further ensure the high conversion efficiency of integrated circuit.
Embodiment 4
As shown in Figure 6 a, the present embodiment and the difference of embodiment 1 are:In diode D2Negative pole and diode D5At positive pole Connect a switch S respectively7With switch S8.Wherein, S is switched7With switch S8Substituted by MOSFET pipes.As shown in Figure 6 b, when opening Close S7Disconnect and switch S8During disconnection, secondary circuit is equivalent to four voltage doubling rectifing circuits.As fig. 6 c, as switch S7Closure and Switch S8During disconnection, secondary circuit is equivalent to five voltage doubling rectifing circuits.Such as Fig. 6 d, as switch S7Closure and switch S8It is secondary during closure Side circuit working state is equivalent to six voltage doubling rectifing circuits.Relative to the circuit shown in embodiment 2, in the scope one of output voltage On the premise of sample, switching frequency range can further reduce.
The input voltage of circuit disclosed in the present embodiment is set to 390V, and resonant frequency is set to 100kHz, output voltage range It is set to [250V, 420V].As shown in figure 9, corresponding working frequency adjustable range is [80kHz, 120kHz].Relative to embodiment For circuit in 1, under output voltage range same case, switching frequency range is smaller, and switching frequency hunting range is more Near resonance point, the high conversion efficiency of integrated circuit is further ensured.

Claims (8)

1. a kind of voltage doubling rectifing circuit, it is characterised in that including diode D1、D2、D3、D4、D5、D6、D7、D8, electric capacity C1、C2、C3、 C4、C5、C6, wherein:Electric capacity C1With electric capacity C4It is connected on diode D2Positive pole and diode D5Between negative pole, diode D1Negative pole with Diode D2Positive pole is connected, diode D1Positive pole is connected to electric capacity C2Lower pin, electric capacity C2Upper pin and diode D3Positive pole And diode D2Negative pole is connected, electric capacity C5Upper pin and electric capacity C2Lower pin is connected with the upper port of transformer, electric capacity C5's Lower pin connection diode D5Positive pole and diode D6Negative pole, diode D4Positive pole and diode D5Negative pole is connected, diode D4 Negative pole and electric capacity C5Upper pin is connected, diode D7Positive pole and diode D8Negative pole is connected, and is connected on diode D3Positive pole and two Pole pipe D6Between negative pole, electric capacity C3With electric capacity C6It is connected on diode D3Negative pole and diode D6Between positive pole, the lower end of transformer Mouth connects electric capacity C simultaneously1Lower pin, diode D7Positive pole and electric capacity C3Lower pin, diode D3Negative pole is power supply positive output End, diode D6Just extremely power supply negative output terminal.
2. a kind of voltage doubling rectifing circuit as claimed in claim 1, it is characterised in that the electric capacity C1Lower pin and the transformation By switching S between device lower port5It is connected.
3. a kind of voltage doubling rectifing circuit as claimed in claim 2, it is characterised in that the switch S5By two MOSFET pipe strings Connection is formed.
4. a kind of voltage doubling rectifing circuit as claimed in claim 2, it is characterised in that the diode D7Positive pole and the transformation Device lower port is by switching S6It is connected.
5. a kind of voltage doubling rectifing circuit as claimed in claim 4, it is characterised in that the switch S6By two MOSFET pipe strings Connection is formed.
6. a kind of voltage doubling rectifing circuit as claimed in claim 1, it is characterised in that in the diode D2Negative pole and the electricity Hold C2Upper pin between tandem tap S7
In the diode D5Positive pole and the electric capacity C5Lower pin between tandem tap S8
7. a kind of voltage doubling rectifing circuit as claimed in claim 1, it is characterised in that the switch S7And the switch S8Adopt Managed with single MOSFET.
8. a kind of resonance isolated converter, including transformer, transformer primary side circuit are full-bridge LLC resonance circuits, its feature exists In transformer secondary circuit is the voltage doubling rectifing circuit as described in any one of claim 1,2,4,6.
CN201710435858.4A 2017-06-09 2017-06-09 Voltage-doubling rectifying circuit and application thereof in resonant isolation converter Active CN107171576B (en)

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Application Number Priority Date Filing Date Title
CN201710435858.4A CN107171576B (en) 2017-06-09 2017-06-09 Voltage-doubling rectifying circuit and application thereof in resonant isolation converter

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109756142A (en) * 2019-01-24 2019-05-14 上海科技大学 Restructural H5 inverter bridge and single-direction and dual-direction controlled resonant converter based on the inverter bridge
WO2021103415A1 (en) * 2019-11-29 2021-06-03 山东科技大学 High-gain quasi-resonance dc-dc converter based on voltage doubling rectifier circuit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08308229A (en) * 1995-05-01 1996-11-22 Takeaki Kukihara Distortionless rectifying circuit
JPH11299241A (en) * 1998-04-15 1999-10-29 Meiji Natl Ind Co Ltd Voltage doubler circuit
CN201937936U (en) * 2010-10-22 2011-08-17 陶荣泰 Super energy-saving fluorescent lamp with long service life
CN103887987A (en) * 2014-04-17 2014-06-25 南京航空航天大学 Multiple voltage-multiplying high-gain high-frequency rectification isolation converter based on switched capacitor
CN103904904A (en) * 2014-04-17 2014-07-02 南京航空航天大学 Dual-voltage amplifying high-gain high-frequency rectifying isolating converter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08308229A (en) * 1995-05-01 1996-11-22 Takeaki Kukihara Distortionless rectifying circuit
JPH11299241A (en) * 1998-04-15 1999-10-29 Meiji Natl Ind Co Ltd Voltage doubler circuit
CN201937936U (en) * 2010-10-22 2011-08-17 陶荣泰 Super energy-saving fluorescent lamp with long service life
CN103887987A (en) * 2014-04-17 2014-06-25 南京航空航天大学 Multiple voltage-multiplying high-gain high-frequency rectification isolation converter based on switched capacitor
CN103904904A (en) * 2014-04-17 2014-07-02 南京航空航天大学 Dual-voltage amplifying high-gain high-frequency rectifying isolating converter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109756142A (en) * 2019-01-24 2019-05-14 上海科技大学 Restructural H5 inverter bridge and single-direction and dual-direction controlled resonant converter based on the inverter bridge
WO2021103415A1 (en) * 2019-11-29 2021-06-03 山东科技大学 High-gain quasi-resonance dc-dc converter based on voltage doubling rectifier circuit

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