CN106130328A - A kind of double-tube series inverse-excitation type switch power-supply - Google Patents
A kind of double-tube series inverse-excitation type switch power-supply Download PDFInfo
- Publication number
- CN106130328A CN106130328A CN201610704102.0A CN201610704102A CN106130328A CN 106130328 A CN106130328 A CN 106130328A CN 201610704102 A CN201610704102 A CN 201610704102A CN 106130328 A CN106130328 A CN 106130328A
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- double
- circuit
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- metal
- tube series
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- 239000004065 semiconductor Substances 0.000 claims abstract description 43
- 230000005284 excitation Effects 0.000 claims abstract description 27
- 239000003990 capacitor Substances 0.000 claims description 15
- 238000004804 winding Methods 0.000 claims description 12
- 238000005070 sampling Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000000052 comparative effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- 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
Abstract
The present invention relates to a kind of double-tube series inverse-excitation type switch power-supply, including: input filter circuit, for the high voltage of dc bus is filtered；Double-tube series circuit of reversed excitation, including main transformer and the metal-oxide-semiconductors of two series connection, power taking from dc bus, and transformator driven control the conducting of its two metal-oxide-semiconductors and discharge with inverse-excitation type carrying out main transformer charging with turning off；Output filter circuit, for being filtered the voltage of double-tube series circuit of reversed excitation output；Loop control circuit, its outfan is connected with the control end of double-tube series circuit of reversed excitation by driving transformer, and loop control circuit sends pwm signal to driving transformer；Driving transformer, for receiving the pwm signal of described loop control circuit output, and simultaneously drives two metal-oxide-semiconductors in double-transistor flyback circuit.The present invention connects two metal-oxide-semiconductors in double-tube series circuit of reversed excitation, and the voltage that whole loop can be made to bear is bigger, and input voltage range of the present invention is wider, reliability is higher, fault rate is lower.
Description
Technical field
The present invention relates to switch power technology field, particularly a kind of double-tube series inverse-excitation type switch power-supply.
Background technology
In photovoltaic generating system, charging pile system, smart micro-grid system, have dc bus that voltage is higher or
The dc bus that scope range of the fluctuation of voltage is big, its DC voltage may be the highest at 200VDC to 1000VDC.Therefore to these
In system, the design of accessory power supply brings challenges with requirement, and the input of these system requirements accessory power supplys can not only adapt to high straight
Stream voltage input, wide fluctuations DC bus-bar voltage to be adapted to.Based on this reason, need one can meet both
The Switching Power Supply of situation is used as the accessory power supply of more this kind of system, solves the problems referred to above.
Summary of the invention
It is an object of the invention to, propose one and can work in the case of 1000V at DC bus-bar voltage, can also expire
Normally can also be worked during foot DC bus-bar voltage wide swings the double-tube series inverse-excitation type switch power-supply exported.
To achieve these goals, the double-tube series inverse-excitation type switch power-supply that the present invention provides, including:
Input filter circuit, for the high voltage of dc bus is filtered, its outfan and double-tube series flyback electricity
The input on road connects；
Double-tube series circuit of reversed excitation, including main transformer and the metal-oxide-semiconductor of two series connection, the output of double-tube series circuit of reversed excitation
End is connected with the input of output filter circuit, the power taking from dc bus of double-tube series circuit of reversed excitation, and transformator driven
The conducting controlling its two metal-oxide-semiconductors is discharged with inverse-excitation type to carry out main transformer charging with shutoff；
Output filter circuit, for the voltage of double-tube series circuit of reversed excitation output is filtered,
Loop control circuit, its input is connected with the outfan of output filter circuit, the outfan of loop control circuit
Being connected by the control end of driving transformer with described double-tube series circuit of reversed excitation, loop control circuit sends to driving transformer
Pwm signal；
Driving transformer, for receiving the pwm signal of described loop control circuit output, and simultaneously drives double-transistor flyback electricity
Two metal-oxide-semiconductors in road.
The double-tube series inverse-excitation type switch power-supply that the present invention provides, two metal-oxide-semiconductors of connecting in double-tube series circuit of reversed excitation,
The voltage that whole loop can be made to bear is bigger, and input voltage range of the present invention is wider, it is possible to be more applicable for voltage higher
In DC bus system；Every born voltage of metal-oxide-semiconductor is relative to reducing half for single tube, reliability of the present invention is higher, fault
Rate is lower；Additionally, driven two metal-oxide-semiconductors of series connection by driving transformer, control to drive signal circuit with power MOS pipe loop
Isolation, makes drive circuit more reliable and more stable.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of double-tube series inverse-excitation type switch power-supply；
Fig. 2 is the input filter circuit of double-tube series inverse-excitation type switch power-supply, double-tube series circuit of reversed excitation, output filtered electrical
Road and the schematic diagram of driving transformer circuit；
Fig. 3 is the loop control circuit schematic diagram of double-tube series inverse-excitation type switch power-supply.
Below in conjunction with the accompanying drawings the present invention is described in further detail.
Detailed description of the invention
Seeing Fig. 1 and Fig. 2, double-tube series inverse-excitation type switch power-supply includes that wave circuit 1, double-tube series circuit of reversed excitation are considered in input
2, output filter circuit 3, loop control circuit 4 and driving transformer T1.Input is considered the input of wave circuit 1 and is connected direct current mother
Line, outfan is connected with the input of double-tube series circuit of reversed excitation 2, for being filtered the high voltage of dc bus.Input
Considering wave circuit 1 and include three filter capacitor C1, C2 and C4 being connected in parallel, one end of filter capacitor C1 connects dc bus, filter
One end ground connection of ripple electric capacity C4, the two ends of filter capacitor C2 connect the other end of filter capacitor C1 and the another of filter capacitor C4 respectively
One end.Every filter capacitor can bear bigger input voltage, up to more than 1000V.Every filter capacitor parallel connection two
Resistance, filter capacitor C1 is in parallel with resistance R1, R2, and filter capacitor C2 is in parallel with resistance R3, R4, filter capacitor C4 and resistance
R5, R6 are in parallel, and three filter capacitor both end voltage are equal.Input considers wave circuit for filtering the high voltage of dc bus
Ripple, uses many filter capacitor series connection dividing potential drops, and controls partial pressure value by the resistance that every filter capacitor is in parallel.
Double-tube series circuit of reversed excitation 2 includes the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, main transformer T2, current sampling resistor
R9, the first diode D1 and power supply circuits, the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 are N-channel MOS pipe, and main transformer T2 is
High frequency transformer, including two armature windings and a secondary windings.The drain electrode of the first metal-oxide-semiconductor Q1 connects dc bus, main transformer
Upper armature winding one end of depressor T2 connects the former pole of the first metal-oxide-semiconductor Q1, and the other end connects the drain electrode of the second metal-oxide-semiconductor Q2.Drive
Transformator T1 includes a primary coil and two time secondary coils, driving transformer T1 last time secondary coil two ends respectively
Connecting gate pole and the source electrode of the first metal-oxide-semiconductor Q1, the two ends of the next secondary coil of driving transformer T1 connect the second metal-oxide-semiconductor respectively
The gate pole of Q2 and source electrode.Ground connection after the source electrode concatenation current sampling resistor R9 of the second metal-oxide-semiconductor Q2, current sampling resistor R9 is used for adopting
The electric current that sample main transformer T2 is primary.The secondary windings of the first diode D1 and main transformer T2 is connected, and main transformer T2's is secondary
Level winding one end connects the positive pole of the first diode D1, and other end ground connection, the negative pole end of the first diode D1 is that double-tube series is anti-
The outfan of excitation circuit, this outfan is connected with the input of output filter circuit.Double-tube series circuit of reversed excitation 2 is from dc bus
Upper power taking, and transformator T1 driven controls the conducting of its two metal-oxide-semiconductors and turns off to carry out main transformer T2 charging and flyback
Formula is discharged.Comparing tradition circuit of reversed excitation, the present invention seals in a metal-oxide-semiconductor in double-tube series circuit of reversed excitation more, and every metal-oxide-semiconductor holds
By certain pressure, making the whole system dc bus pressure can be bigger, input voltage range be bigger.
Power supply circuits are for powering to loop control circuit 4, including resistance R8, electric capacity C6, audion Q3, resistance R10, electricity
Holding C5, resistance R7 and the second diode D2, the positive pole of the second diode D2 connects with one end of the lower armature winding of main transformer T2
Connect.Resistance R8 and electric capacity C6 powers when being and start, after startup just by the second diode D2, resistance R7, resistance R10, electric capacity C5 and
Audion Q3 is powered.
Output filter circuit 3 includes output capacitance C3, output capacitance C3 and the first diode D1, the secondary of main transformer T2
Winding parallel.The voltage that double-tube series circuit of reversed excitation is exported by output filter circuit is filtered, and makes output capacitance C3 two ends defeated
Go out galvanic current pressure.
Seeing Fig. 3, loop control circuit 4 includes feedback signal circuit and control circuit, the input of feedback signal circuit
Being connected with the outfan of output filter circuit 3, feedback signal is sent into control circuit by feedback signal circuit.The power supply of control circuit
The primary coil of driving transformer T1 shown in the 6th foot drive control signal input DRV_OUT Yu Fig. 1 of managing chip U3 is even
Connecing, control circuit receives feedback signal, sends pwm signal to the primary coil of driving transformer T1.Driving transformer T1's is former
Sideline circle and two secondary coil same phases, pwm signal becomes two groups of in-phase signals from driving change by driving transformer T1
Two of depressor T1 time secondary coil output, two groups of in-phase signals of output control first in double-tube series circuit of reversed excitation respectively
Metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2.
Feedback signal circuit includes photoelectrical coupler U1, the second chip U2 and peripheral circuit, and photoelectrical coupler U1 is for defeated
Go out the Phototube Coupling of transmitting telecommunication number.Second chip U2 uses TL431 chip, is used for gathering output voltage, with its internal reference
Magnitude of voltage compares, and by comparative result by sending into power-supply controller of electric chip U3 after photoelectrical coupler U1 isolation.Peripheral electricity
Road include by resistance R13 and R18 form for bleeder circuit, by resistance R11 and and electric capacity C8 form be peaker and
Resistance R12, electric capacity C7 and the integrating circuit of electric capacity C9 composition, the voltage that output filter circuit is exported by bleeder circuit is carried out point
Pressure.Feedback signal is sent in the power supply control chip U3 of control circuit by feedback signal circuit.Feedback signal is divided by R13 and R18
Pressure produces, and feeds back to control circuit, by the letter of photoelectrical coupler U1 after the output voltage signal collection of output filter circuit
Number isolation.
Control circuit includes power supply control chip U3 and peripheral circuit thereof, and power supply control chip U3 uses UC2844D8 core
Sheet, its 6th foot is drive control signal input DRV_OUT, can send pwm signal, and its 3rd foot is Isen end.Peripheral circuit
Including resistance R17, resistance R19, electric capacity C10, electric capacity C11, electric capacity C12, electric capacity C13 and electric capacity C14.Driving transformer T1's is former
Circle one end, sideline connects the 6th foot of power supply control chip U3, other end ground connection.Control circuit receives feedback signal, passes through power supply
6th human hair combing waste of managing chip U3 goes out pwm signal, and pwm signal enters the primary coil of driving transformer T1, and pwm signal is by driving
Dynamic transformator T1 simultaneously drives the first metal-oxide-semiconductor Q1 in double-transistor flyback circuit and the second metal-oxide-semiconductor Q2.Power supply control chip U3 connects
Receive the output voltage state that photoelectrical coupler U1 is transmitted, adjust its 6th foot by its gathered output voltage state
The dutycycle of the PWM ripple of output.
The 3rd foot seeing Fig. 2 and Fig. 3, power supply control chip U3 connects source electrode and the current sampling resistor of the second metal-oxide-semiconductor Q2
R9 one end, the current value of current sampling resistor R9 sampling the 3rd foot feeding power supply control chip U3 by power supply control chip U3,
When the primary current of main transformer T2 exceedes setting value, power supply control chip U3 closes the output of the 6th foot PWM ripple, Jin Erbao
Protect main circuit.
The present invention connects two metal-oxide-semiconductors in double-tube series circuit of reversed excitation, and the voltage that whole loop can be made to bear is bigger,
Reach more than 1000V, enable the Switching Power Supply of the present invention to be more applicable in the DC bus system that voltage is higher, particularly
Grid-connected photovoltaic system, DC micro power grid system, charging pile for electric vehicle system etc..After the most double metal-oxide-semiconductor series connection, every MOS
The born voltage of pipe is relative to reducing half for single tube, the Switching Power Supply reliability making the present invention is higher, fault rate is lower.This
The input voltage range of the Switching Power Supply that invention provides is wider, functional reliability is higher.Additionally, drive string by driving transformer
Two N-channel MOS pipes of connection, control to drive signal circuit to isolate with power MOS pipe loop, make drive circuit more stably may be used
Lean on.
Claims (8)
1. a double-tube series inverse-excitation type switch power-supply, it is characterised in that including:
Input filter circuit (1), for the high voltage of dc bus is filtered, its outfan and double-tube series circuit of reversed excitation
(2) input connects；
Double-tube series circuit of reversed excitation (2), including main transformer (T2) and the metal-oxide-semiconductor of two series connection, double-tube series circuit of reversed excitation
Outfan is connected with the input of output filter circuit, the power taking from dc bus of double-tube series circuit of reversed excitation, and change driven
Depressor (T1) controls the conducting of its two metal-oxide-semiconductors and discharges with inverse-excitation type to carry out main transformer (T2) charging with shutoff；
Output filter circuit (3), for the voltage of double-tube series circuit of reversed excitation output is filtered,
Loop control circuit (4), its input is connected with the outfan of output filter circuit, and the outfan of loop control circuit leads to
Transformator of overdriving is connected with the control end of described double-tube series circuit of reversed excitation, and loop control circuit sends to driving transformer
Pwm signal；
Driving transformer (T1), for receiving the pwm signal of described loop control circuit output, and simultaneously drives double-transistor flyback electricity
Two metal-oxide-semiconductors in road.
Double-tube series inverse-excitation type switch power-supply the most according to claim 1, it is characterised in that described double-tube series flyback electricity
Road includes the first metal-oxide-semiconductor (Q1), the second metal-oxide-semiconductor (Q2), main transformer (T2) and the first diode (D1), described main transformer
(T2) being high frequency transformer, including two armature windings and a secondary windings, it is female that the drain electrode of the first metal-oxide-semiconductor (Q1) connects direct current
Line, upper armature winding one end of main transformer (T2) connects the former pole of the first metal-oxide-semiconductor (Q1), and the other end connects the second metal-oxide-semiconductor
(Q2) drain electrode, described driving transformer (T1) includes a primary coil and two secondary coils, driving transformer (T1)
Last time secondary coil two ends connect gate pole and the source electrode of the first metal-oxide-semiconductor (Q1) respectively, the next time of driving transformer (T1) is secondary
The two ends of sideline circle connect gate pole and the source electrode of the second metal-oxide-semiconductor (Q2) respectively, the source ground of the second metal-oxide-semiconductor (Q2), and the one or two
Connect with the secondary windings of main transformer (T2) in pole pipe (D1).
Double-tube series inverse-excitation type switch power-supply the most according to claim 2, it is characterised in that described loop control circuit bag
Including feedback signal circuit and control circuit, the output voltage feedback signal of described output filter circuit is sent into by feedback signal circuit
Control circuit, control circuit receives feedback signal, sends pwm signal to the primary coil of described driving transformer.
Double-tube series inverse-excitation type switch power-supply the most according to claim 3, it is characterised in that described feedback signal circuit bag
Including photoelectrical coupler (U1), the second chip (U2) and peripheral circuit, photoelectrical coupler (U1) is for exporting the light of transmitting telecommunication number
Electric isolution, the second chip (U2), for gathering the output voltage of described output filter circuit, is carried out with its internal reference voltage value
Relatively, and described control circuit is sent into after being isolated by photoelectrical coupler (U1) by comparative result.
Double-tube series inverse-excitation type switch power-supply the most according to claim 4, it is characterised in that described control circuit includes electricity
Source control chip (U3), primary coil one end of described driving transformer (T1) connects the 6th foot of power supply control chip (U3), separately
One end ground connection, power supply control chip (U3) receives the output voltage state that described photoelectrical coupler (U1) is transmitted, by it
Gathered output voltage state adjusts the dutycycle of the PWM ripple of its 6th foot output.
Double-tube series inverse-excitation type switch power-supply the most according to claim 5, it is characterised in that described second metal-oxide-semiconductor (Q2)
Concatenation current sampling resistor (R9) ground connection afterwards, the Isen end of power supply control chip (U3) connect the second metal-oxide-semiconductor (Q2) source electrode and
Current sampling resistor (R9) one end, when the primary current of main transformer (T2) exceedes setting value, power supply control chip (U3) closes
Close the pwm signal output of the 6th jiao.
7. according to the double-tube series inverse-excitation type switch power-supply described in any one of claim 1 to 6, it is characterised in that described input
Filter circuit includes three filter capacitors being connected in parallel (C1, C2, C4), and every filter capacitor is in parallel with a resistor.
Double-tube series inverse-excitation type switch power-supply the most according to claim 7, it is characterised in that described output filter circuit bag
Including output capacitance (C3), output capacitance (C3) is in parallel with the secondary windings of the first diode (D1), main transformer (T2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610704102.0A CN106130328A (en) | 2016-08-20 | 2016-08-20 | A kind of double-tube series inverse-excitation type switch power-supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610704102.0A CN106130328A (en) | 2016-08-20 | 2016-08-20 | A kind of double-tube series inverse-excitation type switch power-supply |
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| Publication Number | Publication Date |
|---|---|
| CN106130328A true CN106130328A (en) | 2016-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610704102.0A Pending CN106130328A (en) | 2016-08-20 | 2016-08-20 | A kind of double-tube series inverse-excitation type switch power-supply |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107783196A (en) * | 2017-11-22 | 2018-03-09 | 中国地质大学（武汉） | A kind of Transient Electromagnetic Apparatus emitter |
| CN108199586A (en) * | 2018-01-25 | 2018-06-22 | 太原理工大学 | A kind of high potential high voltage direct current draw-out power supply device |
| CN110460248A (en) * | 2019-08-23 | 2019-11-15 | 四川甘华电源科技有限公司 | A kind of module power supply circuit for realizing high-voltage isolating |
| CN113783280A (en) * | 2021-07-21 | 2021-12-10 | 上海汉想新能源科技有限公司 | Lithium battery charging power supply suitable for 1500V photovoltaic system |
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| CN108199586A (en) * | 2018-01-25 | 2018-06-22 | 太原理工大学 | A kind of high potential high voltage direct current draw-out power supply device |
| CN110460248A (en) * | 2019-08-23 | 2019-11-15 | 四川甘华电源科技有限公司 | A kind of module power supply circuit for realizing high-voltage isolating |
| CN113783280A (en) * | 2021-07-21 | 2021-12-10 | 上海汉想新能源科技有限公司 | Lithium battery charging power supply suitable for 1500V photovoltaic system |
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