CN106787748A - A kind of satellite high efficiency soft switching power converter - Google Patents
A kind of satellite high efficiency soft switching power converter Download PDFInfo
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- CN106787748A CN106787748A CN201611133941.8A CN201611133941A CN106787748A CN 106787748 A CN106787748 A CN 106787748A CN 201611133941 A CN201611133941 A CN 201611133941A CN 106787748 A CN106787748 A CN 106787748A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- 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
A kind of satellite high efficiency soft switching power converter that the present invention is provided；Including main switch circuit, rectification circuit, switch tube driving circuit, magnetic core clamper reset circuit, the switch tube driving circuit includes driver UC1710A, driver UC1710B, driver UC1710C, is driving clamping switch tube to realize clamper misphase delay and running by UC1710.This converter improves 6.8% relative to the power supply conversion efficiency of hard switching.The circuit structure has efficient advantage, it is adaptable to the aerospace satellite demand of low-pressure high-power power supply.
Description
Technical field
The present invention relates to a kind of satellite high efficiency soft switching power converter.
Background technology
With the digitized propulsion of satellite platform, low-pressure high-power power supply is gradually into satellite platform major demands.Traditional is hard
Switch DC-DC topography module, power supply conversion efficiency is relatively low, increased the loss of satellite platform thermal source, and this is higher to reliability requirement
Aerospace satellite be difficult to receive.Therefore, power conversion Sofe Switch is often realized with high-quality level device using aerospace, is reduced
Switching loss, improves Switching Power Supply conversion efficiency by a relatively large margin, and it is highly significant to improve the hot working environment of satellite platform.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of satellite high efficiency soft switching power converter, this is defended
Star high efficiency soft switching power converter passes through
The present invention is achieved by the following technical programs.
A kind of satellite high efficiency soft switching power converter that the present invention is provided；Including main switch circuit, rectification circuit,
Switch tube driving circuit, magnetic core clamper reset circuit, the switch tube driving circuit include driver UC1710A, driver
UC1710B, driver UC1710C, 3 pin of driver UC1710C are connected to the positive pole of diode D7 and diode D8, diode
D8 and diode D7 negative poles are respectively connecting to 1 pin of driver UC1710A and driver UC1710B, the 8 of driver UC1710C
Pin is connected with 11 pin and 14 pin of impulse controller, is also connected between 8 pin of driver UC1710C and 11 pin of impulse controller
There are diode D6 and D5,3 pin of the UC1710A and driver UC1710B are connected on electric capacity C4, electric capacity C8, electric capacity
Primary side head ends of the C4 electric capacity C8 respectively with transformer T2, transformer T3 is connected, 8 pin point of UC1710A and driver UC1710B
It is not connected with electric capacity C5, electric capacity C10, electric capacity C5, electric capacity C10 are connected to transformer T2, the end of transformer T3 primary sides,
The driver UC1710A, driver UC1710B, 4 pin of driver UC1710C and 5 pin access common electrical source VCC, drive
Dynamic device UC1710A, driver UC1710B, 8 pin of driver UC1710C, 2 pin and 7 pin access common ground end GND1, institute
Access earth terminal GND1 in the primary side end of 11 pin and 14 pin, transformer T2 and transformer T3 of stating impulse controller U1.
The main switch circuit includes transformer T1, and the primary side end of transformer T1 is sequentially connected inductance Le, main switch
Pipe V1, power input negative terminal Vin-, transformer T1 primary sides head end are connected with power input positive pole Vin+, transformer T1 primary sides
Also be parallel with magnetic core clamper reset circuit between head end and end, the primary side head end of transformer T1 successively with the grid of rectifying tube V3
Pole, the drain electrode connection of rectifying tube V4, drain electrode, grid, the drain electrode of rectifying tube V4 successively with rectifying tube V3 of the primary side end of T1
Connection, rectifying tube V3 and rectifying tube V4 is parallel with body diode D3 and body diode D4, the transformer T1 rear ends connection respectively
Output filter circuit.
The diode D7 and diode D8 rear ends have been also respectively connected with electric capacity C3 and electric capacity C7 and have accessed earth terminal GND1.
The diode D7 and diode D8 are parallel with resistance R6 and resistance R5 respectively.
The transformer T2 primary sides are also associated with the buffer circuit being made up of electric capacity C6, diode D9, resistance R9, resistance
Switching tube V1 other ends ground connection is accessed in one end of R9, and transformer T3 primary sides are also associated with by electric capacity C9, diode D10, resistance
The buffer circuit that R10 is constituted, magnetic core clamper reset circuit is accessed at the two ends of resistance R10.
The beneficial effects of the present invention are：Drive waveform master power switch is formed by the way that UC1710 driving transformers are anti-phase,
Clamping switch tube is being driven to realize clamper misphase delay and running by UC1710.Power convert of this converter relative to hard switching
Improved efficiency 6.8%,.The circuit structure has efficient advantage, it is adaptable to aerospace satellite low-pressure high-power power supply
Demand.
Brief description of the drawings
Fig. 1 is circuit diagram of the present invention；
Fig. 2 is switch mode of the invention；
Fig. 3 is control circuit waveform figure of the invention；
Specific embodiment
Be described further below technical scheme, but claimed scope be not limited to it is described.
A kind of satellite high efficiency soft switching power converter as shown in Figure 1；Including main switch circuit, rectification circuit,
Switch tube driving circuit, magnetic core clamper reset circuit, the switch tube driving circuit include driver UC1710A, driver
UC1710B, driver UC1710C, 3 pin of driver UC1710C are connected to the positive pole of diode D7 and diode D8, diode
D8 and diode D7 negative poles are respectively connecting to 1 pin of driver UC1710A and driver UC1710B, the 8 of driver UC1710C
Pin is connected with 11 pin and 14 pin of impulse controller, is also connected between 8 pin of driver UC1710C and 11 pin of impulse controller
There are diode D6 and D5,3 pin of the UC1710A and driver UC1710B are connected on electric capacity C4, electric capacity C8, electric capacity
The primary side head end of C4 and electric capacity C8 respectively with transformer T2, transformer T3 is connected, 8 pin of UC1710A and driver UC1710B
It is connected with electric capacity C5, electric capacity C10 respectively, electric capacity C5, electric capacity C10 are connected to transformer T2, the end of transformer T3 primary sides
End, the driver UC1710A, driver UC1710B, 4 pin of driver UC1710C and 5 pin access common electrical source
VCC, driver UC1710A, driver UC1710B, 8 pin of driver UC1710C, 2 pin and 7 pin access common ground end
Earth terminal is accessed in 11 pin of GND1, the impulse controller U1 and the primary side end of 14 pin, transformer T2 and transformer T3
GND1。
The main switch circuit includes transformer T1, and the primary side end of transformer T1 is sequentially connected inductance Le, main switch
Pipe V1, power input negative terminal Vin-, transformer T1 primary sides head end are connected with power input positive pole Vin+, transformer T1 primary sides
Also be parallel with magnetic core clamper reset circuit between head end and end, the primary side head end of transformer T1 successively with the leakage of rectifying tube V3
Pole, grid, the drain electrode connection of rectifying tube V4, the primary side end of T1 drain electrode successively with rectifying tube V3, grid, rectifying tube V4
Grid is connected, and rectifying tube V3 and rectifying tube V4 is parallel with body diode D3 and body diode D4, the transformer T1 rear ends respectively
Connection output filter circuit.
The diode D7 and diode D8 rear ends have been also respectively connected with electric capacity C3 and electric capacity C7 and have accessed earth terminal GND1.
The diode D7 and diode D8 are parallel with resistance R6 and resistance R5 respectively.
The transformer T2 primary sides are also associated with the buffer circuit being made up of electric capacity C6, diode D9, resistance R9, resistance
Switching tube V1 other ends ground connection is accessed in one end of R9, and transformer T3 primary sides are also associated with by electric capacity C9, diode D10, resistance
The buffer circuit that R10 is constituted, magnetic core clamper reset circuit is accessed at the two ends of resistance R10.
This supply convertor utilizes static exciter inductance Lm, leakage inductance Le and switching tube output capacitance Coss, clamp capacitor
Cr and other parasitic parameters constitute resonant tank, using resonance unsteady flow mode, make FET MOSFET in switch, VDS
In nearly nought state, to realize Sofe Switch function, the effect of lifting power supply conversion efficiency is reached.
The course of work of the invention is as follows：
For convenience of analyzing, the sofe switch pattern is decomposed into six kinds of switch mode, its stable state waveform in a cycle TS
As shown in Figure 2.
Switch mode 1 [t0, t1]
T0 moment, main switch V1 is open-minded, and clamper tube V2 shut-offs, synchronous rectifier V3 driving voltages become just to turn on
The original edge voltage of depressor is input voltage vin, and transformer transmits energy to secondary, while magnetizing inductance Lm linear-chargings, excitation
Electric current im linear rises since im-.
Switch mode 2 [t1, t2]
At t1 moment, main switch V1 shut-offs, synchronous rectifier V3 driving voltages are turned off, its body diode therewith becoming negative
D3 afterflows, the load current I0/K and exciting current im of conversion to transformer primary side are main switch output capacitance to junction capacity C1
Coss charges, and C2 passes through Cr linear discharges.The voltage at electric capacity C1 two ends is that the voltage Vds1 between main switch V1 drain-sources goes up quickly
It is raised to input voltage vin.Because C1 limits the voltage build-up rate on main switch V1, therefore V1 is zero voltage turn-off.
Switch mode 3 [t2, t3]
T2 moment, the voltage Vds1 at electric capacity C1 two ends is equal to input voltage vin, has crossed at the moment, is added in transformer primary side
The voltage of winding is negative voltage, and the reverse-biased shut-offs of V3 body diodes D3, V4 is turned on, and, by V4 afterflows, transformer is or not load current
To load transmission energy, primary current is containing only exciting current.Magnetizing inductance Lm and junction capacity C1 series resonances, exciting current is from im
(+) starts to reduce, and junction capacity C1 both end voltages continue to rise.
Switch mode 4 [t3, t4]
T3 moment, junction capacity C1 both end voltages Vds1 rises to clamp capacitor Cr both end voltages Vcr, and C2 is discharged to by Cr
Zero.This moment is spent, the body diode D2 of clamper tube V2 is turned on because of positively biased, the magnetizing inductance Lm of transformer, clamp capacitor
There is resonance between Cr and junction capacity C1, C2 three.Reversely, Cr is made the exciting curent im of transformer with voltage Vcr-Vin simultaneously
The magnetic circuit of transformer is resetted.Due to the conducting of body diode D2, by the voltage clamp of clamping switch tube V2 in zero-bit, therefore V2
It is no-voltage conducting.At the t4 moment, V2 is turned off, the mode terminates.Due to the presence of clamp capacitor and junction capacity, V2 is that no-voltage is closed
It is disconnected.
Switch mode 5 [t4, t5]
After V2 shut-offs, exciting current flows through junction capacity C1, C2, and C1 starts electric discharge, and C2 is started to charge up, and exciting current continues anti-
To increase.At the end of the mode, Circuit Fault on Secondary Transformer voltage is zero, synchronous rectifier V4 shut-offs, and its body diode D4 continues continuous
Stream.
Switch mode 6 [t5, t6]
Herein in switch mode, junction capacity C1 voltages have continuation downward trend.Now primary side winding voltage will for just,
Turn on V3 body diodes D3.Due to primary current very little, it is not enough to provide load current, therefore V4 body diodes D4 continues to lead
It is logical.At the t6 moment, main switch V1 is open-minded, starts next work period.
Analyzed more than, as long as rationally control power switch pipe V1 postpones with clamping switch tube V2 drive signals
Between, suitable LC parameter of oscillation is chosen, can be achieved with the ZVT of clamping switch tube and the zero voltage turn-off of main switch
It is open-minded with low-voltage, switching loss is reduced, so as to lift overall transformation efficiency.
By Fig. 2 it is recognised that to realize switching tube V1 and V2 misphase time delays, being controlled to SG1525 output waveforms.It is first
First, the square wave of 180 ° of the two-way phase difference of SG1525AJ outputs is big by forming dutycycle all the way after diode D5, D6 rectification
In 50% square-wave pulse, the square wave maximum duty cycle is controlled to be not more than 70%, ripple by the dead band resistance for adjusting SG1525AJ
In shape such as Fig. 3 " U1SG1525 ".
" U1 1525 " square wave input UC1710C.UC1710C effects in circuit are only low level electric discharge, its output wave
Shape follows " U1 1525 ", in waveform such as Fig. 3 " N2 1710-3 ".
" N2 1710-3 " square wave input UC1710A, UC1710B, due to D8/C3, D7/C7 device property, as " N2
When 1710-3 " is high level, because C3 charge ratios C7 is slow, 1 pin that 1 pin of UC1710A lags behind UC1710B reaches high level；When
When " N2 1710-3 " is low level, because C3 discharges faster than C7,1 pin that 1 pin of UC1710A is faster than UC1710B reaches low level；
This just makes the pin waveform of output end 3 of UC1710A, UC1710B produce phase difference, waveform respectively as " the N3 1710-3 " in Fig. 3,
“N4 1710-3”。
" N3 1710-3 " waveform is by " G1 " waveform, the main work(of the drive waveform in the anti-phase rear formation Fig. 3 of driving transformer T2
Rate switching tube；" N4 1710-3 " waveform " G2 " waveform in forming Fig. 3 after driving transformer T3 is with phase, drive waveform pincers
Bit switch pipe.Finally realize clamper misphase delay and running.
Claims (5)
1. a kind of satellite high efficiency soft switching power converter, it is characterised in that：Including main switch circuit, rectification circuit, open
Tube drive circuit, magnetic core clamper reset circuit are closed, the switch tube driving circuit includes driver UC1710A, driver
UC1710B, driver UC1710C, 3 pin of driver UC1710C are connected to the positive pole of diode D7 and diode D8, diode
D8 and diode D7 negative poles are respectively connecting to 1 pin of driver UC1710A and driver UC1710B, the 8 of driver UC1710C
Pin is connected with 11 pin and 14 pin of impulse controller, is also connected between 8 pin of driver UC1710C and 11 pin of impulse controller
There are diode D6 and D5,3 pin of the UC1710A and driver UC1710B are connected on electric capacity C4, electric capacity C8, electric capacity
The primary side head end of C4 and electric capacity C8 respectively with transformer T2, transformer T3 is connected, 8 pin of UC1710A and driver UC1710B
It is connected with electric capacity C5, electric capacity C10 respectively, electric capacity C5, electric capacity C10 are connected to transformer T2, the end of transformer T3 primary sides
End, the driver UC1710A, driver UC1710B, 4 pin of driver UC1710C and 5 pin access common electrical source
VCC, driver UC1710A, driver UC1710B, 8 pin of driver UC1710C, 2 pin and 7 pin access common ground end
Earth terminal is accessed in 11 pin of GND1, the impulse controller U1 and the primary side end of 14 pin, transformer T2 and transformer T3
GND1。
2. satellite as claimed in claim 1 high efficiency soft switching power converter, it is characterised in that：The main switch circuit
Including transformer T1, the primary side end of transformer T1 is sequentially connected inductance Le, main switch V1, power input negative terminal Vin-,
Transformer T1 primary sides head end is connected with power input positive pole Vin+, is also parallel between transformer T1 primary sides head end and end
Magnetic core clamper reset circuit, the primary side head end of transformer T1 grid successively with rectifying tube V3, the drain electrode of rectifying tube V4 are connected,
The drain electrode successively with rectifying tube V3 of the primary side end of T1, grid, the drain electrode of rectifying tube V4 are connected, rectifying tube V3 and rectifying tube V4
Body diode D3 and body diode D4 is parallel with respectively, and the transformer T1 rear ends connect output filter circuit.
3. satellite as claimed in claim 1 high efficiency soft switching power converter, it is characterised in that：The diode D7 and
Diode D8 rear ends have been also respectively connected with electric capacity C3 and electric capacity C7 and have accessed earth terminal GND1.
4. satellite as claimed in claim 1 high efficiency soft switching power converter, it is characterised in that：The diode D7 and
Diode D8 is parallel with resistance R6 and resistance R5 respectively.
5. satellite as claimed in claim 1 high efficiency soft switching power converter, it is characterised in that：Transformer T2 times
Level side is also associated with the buffer circuit being made up of electric capacity C6, diode D9, resistance R9, and one end access switching tube V1 of resistance R9 is another
One end is grounded, and transformer T3 primary sides are also associated with the buffer circuit being made up of electric capacity C9, diode D10, resistance R10, resistance
Access magnetic core clamper reset circuit in the two ends of R10.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611133941.8A CN106787748B (en) | 2016-12-10 | 2016-12-10 | High-efficiency soft switching power supply converter for satellite |
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|---|---|---|---|
| CN201611133941.8A CN106787748B (en) | 2016-12-10 | 2016-12-10 | High-efficiency soft switching power supply converter for satellite |
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| CN106787748B CN106787748B (en) | 2023-05-05 |
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| CN105099232A (en) * | 2014-05-07 | 2015-11-25 | 武汉永力睿源科技有限公司 | Synchronous rectification drive circuit for active clamping forward converter |
| CN105515377A (en) * | 2016-01-26 | 2016-04-20 | 上海电力学院 | Soft switch high gain direct current converter based on coupling inductances and voltage doubling capacitors |
| CN206237309U (en) * | 2016-12-10 | 2017-06-09 | 贵州航天林泉电机有限公司 | A kind of satellite high efficiency soft switching power converter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6304463B1 (en) * | 1999-05-07 | 2001-10-16 | Power-One, Inc. | Single-ended forward converter circuit with quasi-optimal resetting for synchronous rectification |
| US20040071004A1 (en) * | 2001-04-02 | 2004-04-15 | International Rectifier Corporation | DC-DC converter |
| JP2011041419A (en) * | 2009-08-17 | 2011-02-24 | Cosel Co Ltd | Switching power unit |
| CN101777840A (en) * | 2010-02-25 | 2010-07-14 | 北京航空航天大学 | Buck-boost composite DC/DC converter |
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| CN106787748B (en) | 2023-05-05 |
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