CN109600068A - Constant phase shift full-bridge soft-switching technology - Google Patents
Constant phase shift full-bridge soft-switching technology Download PDFInfo
- Publication number
- CN109600068A CN109600068A CN201811566095.8A CN201811566095A CN109600068A CN 109600068 A CN109600068 A CN 109600068A CN 201811566095 A CN201811566095 A CN 201811566095A CN 109600068 A CN109600068 A CN 109600068A
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- CN
- China
- Prior art keywords
- phase
- circuit
- shift
- bridge arm
- pwm controller
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
-
- 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
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/083—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the ignition at the zero crossing of the voltage or the current
-
- 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)
- Inverter Devices (AREA)
Abstract
The purpose of the present invention is to provide constant phase-shift soft switch technologies, replace dedicated chip with less expensive chip, significantly expand operating frequency range, can also work at low frequency.This technology is to be realized by adjusting duty ratio size, rather than realized by changing phase, this is significantly different with usual phase-shift control mode when carrying out pressure regulation or pressure stabilizing.
Description
Technical field
The present invention relates to Switching Power Supply, inverter and other related equipment.
Background technique
Middle high power switching power supply currently on the market, inverter are mostly full-bridge converter type.Control mode is main
Have 4 kinds: Bipolar control, limited double poled control scheme, phase shifting control, resonance control.There is corresponding integrated circuit to control chip
It realizes.Currently, full-bridge transformation is based on soft switch technique.And soft switch technique mostly uses phase-shift control mode.It utilizes change
The leakage inductance of depressor or the parasitic capacitance or external capacitor of primary side string inductance and power tube realize zero voltage switching technology.By not
It is disconnected to change phase, change from 0 degree to 180 degree, to change duty ratio, reaches pressure regulation or pressure stabilizing purpose.Phase-shift control mode
Generally use special chip.And this kind of chip is somewhat expensive, its usual working frequency is tens kHz, is not suitable for work at low frequency
Make.
Summary of the invention
The purpose of the present invention is to provide constant phase-shift soft switch technologies, replace dedicated core with less expensive chip
Piece significantly expands operating frequency range, can also work at low frequency.This technology is to pass through tune when carrying out pressure regulation or pressure stabilizing
Duty ratio size is saved to realize, rather than is realized by changing phase, this is significantly different with usual phase-shift control mode.
To solve these problems, present invention provide the technical scheme that
The driving circuit and phase-shift circuit 2 that OUTA is connected to Q2 are exported by 1 tunnel of PWM controller；Another way OUTB is connected to
The driving circuit and phase-shift circuit 1 of Q1.Phase-shift circuit 1 exports the driving circuit for being connected to Q3, and the output of phase-shift circuit 2 is connected to
The driving circuit of Q4.Q1 and Q2 is preceding bridge arm, and Q3 and Q4 are rear bridge arms.Preceding bridge arm tie point is A, and rear bridge arm tie point is B, A
It is 2 output ends with B, connects load；2 feet of two upper tubes Q2, Q3 connect power positive end, and the leftover bits and pieces of two down tubes Q1, Q4 connect power supply
Negative terminal；
For convenience of understanding, it is described as follows:
Conducting pulsewidth=T3on of conducting pulsewidth=T1on of Q1, Q3, switch periods=T of Q1；
Conducting pulsewidth=T4on of conducting pulsewidth=T2on of Q2, Q4, switch periods=T of Q2；
This circuit requirement: delay time=t of the delay time=Q2 and Q4 of Q1 and Q3 can also derive the dead zone of Q1 and Q2
Dead time=Tdead of time=Q3 and Q4；
In addition they will also meet simultaneously following relationship:
A.T1on≤T3on, T2on≤T4on；
B.T1on+T3on+ Tdead+ t≤T, T2on+T4on+ Tdead+ t≤T；
C.T1on=T2on, T3on=T4on；
Above-described equal (symbol be=), refers to theoretical value, has deviation in Practical Project.
Power tube can be MOS, and IGBT, the transistors such as triode, two interpolar of power tube difference parallel diode, they are to post
Raw diode or additional diode；Two interpolar of power tube Q1, Q2, Q3, Q4 distinguishes shunt capacitance C1, C2, C3, C4；They are to post
Raw capacitor or additional capacitor.
Constant phase shift refers to two road output pwm signals of PWM controller after phase-shift circuit is handled, the phase moved
Position immobilizes, which can change by adjusting parameter.
The parameter of this regulation of electrical circuit PWM controller can work in 50HZ frequency hereinafter, or more than 100K HZ frequency.
When load inductance is smaller, an inductance L1 can be increased between A and B.
The front and back bridge arm and power supply positive and negative terminal of this circuit can concatenate other elements according to application.
This circuit changes duty ratio size by PWM controller, rather than by phase shift, to control output voltage.
Working principle: when work, when OUTA becomes high potential, Q2 is first connected, and after one phase shift width of delay, Q4 is
Conducting.When OUTA is low potential, Q2 is under the effect of C2 capacitor, zero voltage turn-off.After one phase shift width of delay, Q4 exists
Under the effect of C4 capacitor, zero voltage turn-off, inductance has afterflow；When OUTA becomes high potential again, under inductance afterflow effect, A point is
High potential, B point are low potential, and Q2 is connected with Q4 no-voltage；Q1 and Q3 is also so to work；It is obvious that opening here it is phase shift is soft
Pass technology, the phase moved immobilize.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and embodiments:
Fig. 1 is the circuit diagram of the embodiment of the present invention；
Fig. 2 is the working timing figure of the embodiment of the present invention.
Specific embodiment
Above scheme is described further below in conjunction with specific embodiment, it should be appreciated that these embodiments are for illustrating
The of the invention rather than limitation scope of the present invention.The implementation condition used in the present embodiment can be done according to the condition of specific producer
Further adjustment,
The implementation condition being not specified is usually the condition in routine experiment.
PWM controller can be using 3525 cheap chips, it includes voltage and current feedback signal, and phase-shift circuit can
To use RC phase-shift circuit, power tube is metal-oxide-semiconductor, and small capacitances C in parallel, driving circuit use IR2110 to two interpolar of drain-source respectively,
The two road output pwm signals that 3525 chips generate are separately connected RC circuit, and RC circuit is connected respectively to IR2110 again, and IR2110 divides
Not Qu Dong after bridge arm metal-oxide-semiconductor, two road output pwm signals of PWM controller are connected respectively to IR2110, before IR2110 respectively drives
Bridge arm metal-oxide-semiconductor.
Examples detailed above only design and feature to illustrate the invention, its object is to be to allow person skilled in the art
It cans understand the content of the present invention and implement it accordingly, it is not intended to limit the scope of the present invention.It is all smart according to the present invention
The equivalent transformation or modification that refreshing essence is done, should all cover within the scope of the present invention.
Claims (7)
1. a kind of constant phase-shift soft switch technology, it is characterised in that:
The driving circuit and phase-shift circuit 2 that OUTA is connected to Q2 are exported by 1 tunnel of PWM controller；Another way OUTB is connected to
The driving circuit and phase-shift circuit 1 of Q1.Phase-shift circuit 1 exports the driving circuit for being connected to Q3, and the output of phase-shift circuit 2 is connected to
The driving circuit of Q4.Q1 and Q2 is preceding bridge arm, and Q3 and Q4 are rear bridge arms.Preceding bridge arm tie point is A, and rear bridge arm tie point is B, A
It is 2 output ends with B, connects load；2 feet of two upper tubes Q2, Q3 connect power positive end, and the leftover bits and pieces of two down tubes Q1, Q4 connect power supply
Negative terminal；
This circuit requirement: delay time=t of the delay time=Q2 and Q4 of Q1 and Q3；
In addition they will also meet simultaneously following relationship:
A.T1on≤T3on, T2on≤T4on；
B.T1on+T3on+ Tdead+ t≤T, T2on+T4on+ Tdead+ t≤T；
C.T1on=T2on, T3on=T4on.
2. according to claim 1, it is characterised in that power tube can be MOS, IGBT, the transistors such as triode, power tube two
Interpolar distinguishes parallel diode, they are parasitic diode or additional diode；Two interpolar of power tube Q1, Q2, Q3, Q4 difference is simultaneously
Join capacitor C1, C2, C3, C4；They are parasitic capacitance or additional capacitor.
3. according to claim 1, it is characterised in that constant phase shift refers to that two road output pwm signals of PWM controller pass through
After phase-shift circuit processing, the phase moved immobilizes, which can change by adjusting parameter.
4. according to claim 1, it is characterised in that the parameter of this regulation of electrical circuit PWM controller can work in 50HZ frequency
Hereinafter, or more than 100K HZ frequency.
5. according to claim 1, it is characterised in that when load inductance is smaller, an inductance can be increased between A and B
L1。
6. according to claim 1, it is characterised in that the front and back bridge arm and power supply positive and negative terminal of this circuit can be with according to application
Concatenate other elements.
7. according to claim 1, it is characterised in that this circuit changes duty ratio size by PWM controller, rather than logical
Phase shift is crossed, to control output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811566095.8A CN109600068A (en) | 2018-12-20 | 2018-12-20 | Constant phase shift full-bridge soft-switching technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811566095.8A CN109600068A (en) | 2018-12-20 | 2018-12-20 | Constant phase shift full-bridge soft-switching technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109600068A true CN109600068A (en) | 2019-04-09 |
Family
ID=65963882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811566095.8A Pending CN109600068A (en) | 2018-12-20 | 2018-12-20 | Constant phase shift full-bridge soft-switching technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN109600068A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2458814Y (en) * | 2000-12-12 | 2001-11-07 | 北京通力环电气有限公司 | Full-bridge phase-shift drive |
| US20140117769A1 (en) * | 2012-10-25 | 2014-05-01 | SunEdison Microinverter Products LLC | Master slave architecture for distributed dc to ac power conversion |
| CN104052301A (en) * | 2014-06-25 | 2014-09-17 | 哈尔滨工程大学 | Photovoltaic system DC-DC full-bridge converter based on soft switching technology |
| CN104811081A (en) * | 2015-04-14 | 2015-07-29 | 汪水仿 | Constant phase-shifted full-bridge soft-switching technology |
-
2018
- 2018-12-20 CN CN201811566095.8A patent/CN109600068A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2458814Y (en) * | 2000-12-12 | 2001-11-07 | 北京通力环电气有限公司 | Full-bridge phase-shift drive |
| US20140117769A1 (en) * | 2012-10-25 | 2014-05-01 | SunEdison Microinverter Products LLC | Master slave architecture for distributed dc to ac power conversion |
| CN104052301A (en) * | 2014-06-25 | 2014-09-17 | 哈尔滨工程大学 | Photovoltaic system DC-DC full-bridge converter based on soft switching technology |
| CN104811081A (en) * | 2015-04-14 | 2015-07-29 | 汪水仿 | Constant phase-shifted full-bridge soft-switching technology |
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Application publication date: 20190409 |