CN106505842B - Airborne DC power supply - Google Patents
Airborne DC power supply Download PDFInfo
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- CN106505842B CN106505842B CN201610911183.1A CN201610911183A CN106505842B CN 106505842 B CN106505842 B CN 106505842B CN 201610911183 A CN201610911183 A CN 201610911183A CN 106505842 B CN106505842 B CN 106505842B
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
A kind of airborne DC power supply, including being used for airborne DC power supply circuit when by lightening strikes, rapid pressure stabilizing, move the thunder-lightning circuit of most of surge energy, power supply EMI filter circuit for being filtered out to the high-frequency interferencing signal in circuit, for to there is Anti-surging to airborne direct current power source voltage current limiting pressure-limiting, the voltage protector circuit of over-voltage and overcurrent and the DC voltage for sending over generator are converted into Aerial Electronic Equipment and the anti-transient state of D.C. regulated power supply are often used to interrupt power supply stabilization circuit, it includes first that the anti-transient state, which interrupts power supply stabilization circuit, two anti-transient states interrupt D.C. regulated power supply；Implement the present invention, aircraft can be efficiently solved in flight course by implementing airborne DC power supply proposed by the present invention, for airborne DC power supply when interfering with each other by lightening strikes or the variation of onboard generators operating condition, airborne equipment etc., there is due to voltage spikes, surge, under-voltage problem in aircraft airborne equipment power supply.
Description
Technical field
The present invention relates to technical field of direct current power, meet airworthiness requirement, with lightning protection more specifically to a kind of
Electricity, the airborne DC power supply of the functions such as Anti-surging, over-voltage, overcurrent protection and under-voltage afterflow.
Background technique
Aircraft can meet with lightening strikes in flight often, and thunder and lightning is a kind of natural phenomena, is that day charges cloud layer to another in the air
A kind of band xenogenesis charge cloud layer or electrification cloud layer swift and violent discharge process over the ground.Fuselage is mounted on hardware and meets illiteracy
The Aerial Electronic Equipments such as the DC power supply on the aircraft of skin component, if without lightning protection measures, it is most likely that directly attacked by thunder and lightning
It hits, either by failure in thunder and lightning transient state INDUCED ELECTROMAGNETIC PULSE energy impact or damage；It, can also be because in addition, in flight course
The interactive interferences such as high-altitude complex environment, the variation of onboard generators operating condition, airborne equipment, caused by aircraft airborne equipment power supply
Occur due to voltage spikes, surge, it is under-voltage phenomena such as, can the failure of airborne Aerial Electronic Equipment or damage.Therefore, airborne Aerial Electronic Equipment
DC power supply is both needed to have the function of thunder-lightning, Anti-surging, over-voltage, overcurrent protection, under-voltage afterflow etc., extremely to Flight Safety
It is important.
When aircraft flight in the sky, if airborne DC power supply be struck by lightning or flight equipment interactive interference and cause to navigate
Electric system cisco unity malfunction may generate catastrophic consequence.Therefore thunder-lightning, the Anti-surging, mistake of airborne DC power supply
The functions such as pressure, overcurrent protection, under-voltage afterflow are the important contents of Aerial Electronic Equipment design.
Summary of the invention
For the DC power supply in airborne by the phases such as lightening strikes or the variation of onboard generators operating condition, airborne equipment
Mutually interference when, aircraft airborne equipment power supply occur due to voltage spikes, surge, it is under-voltage the problems such as, propose that a kind of seaworthiness that meets is wanted
Ask, have thunder-lightning, the airborne DC power supply of the functions such as Anti-surging, over-voltage, overcurrent protection and under-voltage afterflow, the present invention is directed to
Design a kind of airborne DC power supply for meeting airworthiness requirement.It is required according to China Aviation general bureau, airborne equipment need to meet RTCA/
The 16th chapter " power input " of AO-160F " airborne equipment environmental condition and test method " airworthiness requirement is resistant to improper surge voltage
80V continues 100 milliseconds；Voltage point cutting edge of a knife or a sword 600V continues the impact of 10 microseconds；The test of 200 milliseconds of power supply transient state power failure, and
The test requirements document of 22nd chapter " lightning induction transient state sensibility ".
A kind of airborne DC power supply, including for airborne DC power supply circuit when by lightening strikes, rapid pressure stabilizing, shifting
The thunder-lightning circuit for falling most of surge energy, the power supply EMI filtering for being filtered out to the high-frequency interferencing signal in circuit
Circuit, for the voltage protector circuit with Anti-surging, over-voltage and overcurrent to airborne direct current power source voltage current limiting pressure-limiting
And the DC voltage for sending over generator is converted into Aerial Electronic Equipment and the anti-transient state of D.C. regulated power supply is often used to interrupt
Power supply stabilization circuit, it includes that the first and second anti-transient state interrupts D.C. regulated power supply that the anti-transient state, which interrupts power supply stabilization circuit,.
The thunder-lightning circuit includes the first, second and third ceramic gas discharge tube for pressure stabilizing and reduction surge energy, is used
In the first, second and third varistor for bearing current peak electric current and for the first, second and third voltage wink of suppressor pulse energy
State inhibits diode.
First ceramic gas discharge tube is connect with second ceramic gas discharge tube, the described first and second ceramic gas
The first thunder-lightning series circuit ground connection of body discharge tube connection composition, the third ceramic gas discharge tube are connected in parallel on described first
The outlet side of thunder-lightning series circuit；First varistor is connect with second varistor, and described first and second is pressure-sensitive
It is electrically coupled in series that second thunder-lightning series circuit of resistance connection composition is grounded, the third varistor is connected in parallel on second lightning protection
The outlet side of circuit；The first voltage Transient Suppression Diode is connect with the second voltage Transient Suppression Diode, described
First and second voltage transient inhibits the third thunder-lightning series circuit ground connection of diode connection composition, tertiary voltage transient state suppression
Outlet side of the diodes in parallel processed in the third thunder-lightning series circuit.
The power supply EMI filter circuit includes for the first EMI resistance of anti-voltage surge, for carrying out current limliting to circuit
The 2nd EMI resistance, for circuit carry out overcurrent protection self- recoverage insure, for being filtered to circuit first and second,
Three, four EMI capacitors and chip inductor.
The first EMI resistance is connected in series in the anode in circuit；The insurance is connected in series in the first EMI electricity
The centre of resistance and the 2nd EMI resistance；First EMI series electrical of the first EMI capacitor and the 2nd EMI capacitor composition
Road ground connection, the first EMI series circuit input side connect with the 2nd EMI resistor coupled in parallel, the 3rd EMI capacitor with it is described
2nd EMI series circuit of the 4th EMI capacitor composition is parallel in the power supply EMI filter circuit, the chip inductor series connection
It is connected to the centre of the first EMI series circuit and the 2nd EMI series circuit.
The voltage protector circuit includes anti-reverse diode, voltage clamping diode, zener diode, for institute
State the constant-current source circuit of zener diode power supply, adjustment circuit, sampling resistor for adjustment circuit voltage, the first and second pressure stabilizing
Filter capacitor, the first and second output impedance build-out resistor and the first and second inhibition inductance for inhibiting high-frequency harmonic.
The anti-reverse Diode series are connected to the anode of voltage protector circuit, the voltage clamping diodes in parallel
In the outlet side of the anti-reverse diode；The constant-current source circuit is connected in parallel on the outlet side of the voltage clamping diode, institute
The one end for stating zener diode is connect with the constant-current source circuit, the other end is connect with the cathode of the voltage protector circuit；
The input terminal of the adjustment circuit is connect with the constant-current source circuit, output end is connected in series with described using resistance；Described
One, the filtering series circuit of two filtering capacitance of voltage regulation composition is parallel to the outlet side of the sampling resistor；First and second output
The matching series circuit of impedance matching resistor composition is connected in parallel on the outlet side of the filtering series circuit；The match circuit it is defeated
Side inhibits inductance connection respectively at described first and second out.
The adjustment circuit includes the first and second adjustment triode and the first and second adjustment diode；The first adjustment three
The collector of pole pipe is connect with the base stage of the second adjustment triode, the base stage of the first adjustment triode and described first
Adjust the input terminal connection of diode, the input terminal of the output end of the first adjustment diode and the second adjustment diode
Connection, the output end of the second adjustment diode current collection with the emitter of first triode and the second triode respectively
Pole connection.
It includes the regulated power supply counnter attack that reverse connecting protection is carried out to circuit that the first and second anti-transient state, which interrupts D.C. regulated power supply,
Connect diode, high-frequency filter capacitor, the adjustable voltage stabilizing chip of storage capacitor, output voltage being powered to circuit, power supply core
Piece soft start capacitor and output circuit.
The anti-reverse Diode series of regulated power supply are connected to the anode of circuit, and the high-frequency filter capacitor is connected in parallel on institute
The outlet side of the anti-reverse diode of regulated power supply is stated, the storage capacitor is connected in the output of the high-frequency filter capacitor in parallel
Side, the outlet side of the storage capacitor are connect with the voltage stabilizing chip；The outlet side of the voltage stabilizing chip and the output circuit
Connection；The soft start capacitor is connect with the anode of the voltage stabilizing chip and circuit respectively.
For the DC power supply in airborne by the phases such as lightening strikes or the variation of onboard generators operating condition, airborne equipment
Mutually interference when, aircraft airborne equipment power supply occur due to voltage spikes, surge, it is under-voltage the problems such as, implement proposed by the present invention one
The airborne DC power supply of kind overcomes previous airborne DC power supply by lightening strikes or the variation of onboard generators operating condition, machine
Carry the due to voltage spikes occurred when equipment etc. interferes with each other, surge, it is under-voltage the problems such as, while also meet China Aviation general bureau about
Airborne equipment need to meet the 16th chapter of RTCA/AO-160F " airborne equipment environmental condition and test method " airworthiness requirement, and " power supply is defeated
Enter " the improper surge voltage 80V of tolerance, continue 100 milliseconds；Voltage point cutting edge of a knife or a sword 600V continues the impact of 10 microseconds；The power supply of power supply transient state
Interrupt 200 milliseconds of test and the test requirements document of the 22nd chapter " lightning induction transient state sensibility ".
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the composition logical schematic of DC power supply composition embodiment in airborne DC power supply in the present invention；
Fig. 2 is the schematic diagram of lightning protection circuit embodiment in airborne DC power supply in the present invention；
Fig. 3 be in the present invention in the present invention in airborne DC power supply 120 embodiment of power supply EMI filter circuit schematic diagram；
Fig. 4 is the schematic diagram for protecting circuit embodiments in the present invention in the present invention in airborne DC power supply；
Fig. 5, which is that 3.3VDC is anti-in airborne DC power supply in the present invention in the present invention, interrupts power supply stabilization circuit reality for electric transient
Apply the schematic diagram of example；
Fig. 6, which is that 5VDC is anti-in airborne DC power supply in the present invention in the present invention, interrupts power supply stabilization circuit implementation for electric transient
The schematic diagram of example.
Specific embodiment
When aircraft flight in the sky, if airborne DC power supply be struck by lightning or flight equipment interactive interference and cause to navigate
Electric system cisco unity malfunction may generate catastrophic consequence.Therefore thunder-lightning, the Anti-surging, mistake of airborne DC power supply
The functions such as pressure, overcurrent protection, under-voltage afterflow are the important contents of Aerial Electronic Equipment design.
The problem to be solved in the present invention is: aircraft in flight course, airborne DC power supply by lightening strikes or
When the variation of onboard generators operating condition, airborne equipment etc. interfere with each other, there is due to voltage spikes, wave in aircraft airborne equipment power supply
The problems such as gushing, be under-voltage.
Fig. 1 is the composition logical schematic of DC power supply composition embodiment in airborne DC power supply in the present invention, such as Fig. 1 institute
Show, the technical scheme is that the present invention is directed to design a kind of airborne DC power supply for meeting airworthiness requirement.According to middle Air China
Empty general bureau requires, and airborne equipment need to meet RTCA/AO-160F " airborne equipment environmental condition and test method " airworthiness requirement the 16th
Chapter " power input " is resistant to improper surge voltage 80V, continues 100 milliseconds；Voltage point cutting edge of a knife or a sword 600V continues the impact of 10 microseconds；Electricity
The test of 200 milliseconds of source transient state power failure and the test requirements document of the 22nd chapter " lightning induction transient state sensibility ".Airborne direct current
Source includes that thunder-lightning circuit 110, power supply EMI filter circuit 120, voltage protector circuit 130 and anti-transient state interruption power supply are steady
Volt circuit；Thunder-lightning circuit 110 pressure stabilizing, shifting can fall most of surge energy rapidly when aircraft receives lightening strikes；Power supply
EMI filter circuit 120 filters out the high-frequency interferencing signal in airborne DC power supply, and when Aerial Electronic Equipment being allowed to work normally
Frequency signal enter；Voltage protector circuit 130 carries out current limiting pressure-limiting to circuit, inhibits improper surge voltage, by power supply
Voltage clamping is in 30VDC；Anti- transient state, which interrupts power supply stabilization circuit, prevents power supply transient state from interrupting, and will send from generator
28VDC be converted into the common D.C. regulated power supply 3.3V and 5VDC of Aerial Electronic Equipment, and the power supply continued for some time.Implement this
The airborne DC power supply that invention proposes can efficiently solve aircraft in flight course, and airborne DC power supply is attacked by thunder and lightning
It hits or when the variation of onboard generators operating condition, airborne equipment etc. interfere with each other, voltage point occurs in aircraft airborne equipment power supply
Peak, surge, under-voltage problem, while also complying with RTCA/AO-160F " airborne equipment environmental condition and test method " seaworthiness and wanting
It asks, below in conjunction with attached drawing, the present invention will be described in detail.
One, 110 embodiment of thunder-lightning circuit
Fig. 2 is the schematic diagram of lightning protection circuit embodiment in airborne DC power supply in the present invention, as shown in Fig. 2, thunder-lightning is electric
Road 110 includes the first, second and third ceramic gas discharge tube (GDT1, GDT2, GDT3) for pressure stabilizing and reduction surge energy, is used
In the first, second and third varistor (VDR1, VDR2, VDR3) for bearing current peak electric current and for suppressor pulse energy
First, second and third voltage transient inhibits diode (TVS1, TVS2, TVS3).
First ceramic gas discharge tube GDT1 is connect with the second ceramic gas discharge tube GDT2, and the first and second ceramic gas is put
First thunder-lightning series circuit of fulgurite connection composition is grounded (not shown), and third ceramic gas discharge tube GDT3 is connected in parallel on
The outlet side of first thunder-lightning series circuit；First varistor VDR1 is connect with the second varistor VDR2, and first and second is pressure-sensitive
The second thunder-lightning series circuit (not shown) ground connection of resistance (VDR1, VDR2) connection composition, third varistor VDR3
It is connected in parallel on the outlet side of the second thunder-lightning series circuit；First voltage Transient Suppression Diode TVS1 and second voltage transient state inhibit
Diode TVS2 connection, the first and second voltage transient inhibit the third thunder-lightning series electrical of diode (TVS1, TVS2) connection composition
Road (not shown) ground connection, tertiary voltage Transient Suppression Diode TVS3 are connected in parallel on the output of third thunder-lightning series circuit
Side.
The addition of lightning protection component cannot influence the normal work of route, this will guarantee the dc breakdown voltage of lightning protection component
Lower limit value necessarily be greater than the maximum normal working voltage of route.Determine the highest instantaneous voltage value that route can bear, it is true
The impact flashover voltage value for protecting lightning protection component has to be lower than this value.To ensure to carry out interim, the reflection of lightning protection component when moment over-voltage
Speed is faster than the reflection speed of route, does sth. before others have a chance to overvoltage being limited in safety value.According to the impact that may be scurried into route
Current strength determines the impact resistance current capacity that selected lightning protection component must reach.After having served as loss of voltage, it is to be ensured that lightning protection
Device restores high-impedance state in time, in order to avoid influence the normal work of route.
According to the test requirements document of " lightning induction transient state sensibility ", equipment Selection experiment grade 2 in fuselage, Performance Level A,
Single pulse surge waveform 5A crest voltage, electric current 125V/400A, duration 120us；Multiple pulses impact test
The crest voltage, electric current 250V/50A of No. 3 sinusoidal decay waves of waveform or cosine decaying wave (1Mhz).According to formula: pulse
Energy=k*V (t) * I (t) * t, wherein k is shape factor；V (t) indicates that maximum clamp voltage, I (t) indicate breakdown peak value electricity
Stream；T indicates the duration of half peak point current.
Single pulse energy=0.5*125V*400A*120*10-6s=3J
Multiple pulses energy=0.86*250V*50A*1*10-6s=0.01J
The maximum voltage that circuit works normally input is 32.2V, the preferred 75V of the lightning protection circuit breakdown protection voltage present invention.
Lightning protection circuit of the invention is composite structured using three-level, and the prime device of lightning protection circuit is first, second and third
Ceramic gas discharge tube (GDT1, GDT2, GDT3), inside the inert gas filled with certain type and concentration, work as surge voltage
When appearance, manages interior gas and be ionized electric discharge, decline the voltage at pipe both ends rapidly, the transfer of most of surge energy is fallen.Work as wave
After gushing disappearance, impedance restores again to infinity.Its advantage: small in size, receiving discharge current is big, through-current capability (10-15KA),
Parasitic capacitance is small, and leakage current is small.The first, second and third ceramic gas discharge tube (GDT1, GDT2, GDT3) that the present invention selects is preferred
Model UN2E5-75L, breakdown voltage 75V are resistant to electric current 5000A, are resistant to pulse energy 7.5J.
Lightning protection circuit intergrade protection circuit is the first, second and third varistor of metal oxide (VDR1, VDR2, VDR3),
Preferred model V68ZA10P of the invention, its main feature is that peak point current ability to bear is big, it is maximum up to 10000A, bear pulse
Energy 33J, parasitic capacitance 10000pF, two interelectrode capacities play certain filter action to power supply line.
Rear class protection circuit is the first, second and third transient voltage suppressor diode (TVS1, TVS2, TVS3) in lightning protection circuit,
Preferred model SMDJ75A of the invention, its main feature is that the response time is quickly (ns grades), suppressor pulse energy is big, reachable
3000W bears pulse energy 3.5J.
Those skilled in the art know: although although the thunder-lightning circuit 110 in the present embodiment use prime, intergrade with
And rear class composition three-level composite construction, but can be according to actual needs in actual implementation level Four composite construction or its
Its more stages circuit composite construction circuit, the discrete component in the present embodiment in every primary circuit are connected in parallel in this grade of series circuit
Outlet side, but this grade of series circuit can also be connected in parallel on the outlet side of discrete component in implementation process.
Lightning protection component with being connected across positive pole and shell respectively, power cathode and shell, positive pole and power cathode it
Between.When lightning protection component the two poles of the earth are by thunder and lightning transient state high energy impact events, the high impedance between two-stage can be become with ns grades of speed
Low ESR from shell releases and up to counts the surge power of kW, makes the voltage clamping of two interpolars in a predetermined value, effective protection its
Destruction of the Sensitive Apparatus of rear class electronic circuit from surge pulse.
Two, 120 embodiment of power supply EMI filter circuit
Fig. 3 be in the present invention in the present invention in airborne DC power supply 120 embodiment of power supply EMI filter circuit schematic diagram,
As shown in figure 3, power supply EMI filter circuit 120 includes for the first EMI resistance Rn1 of anti-voltage surge, for carrying out to circuit
2nd EMI resistance R1 of current limliting, the self- recoverage for carrying out overcurrent protection to circuit insure F1, for what is be filtered to circuit
First, second, third and fourth EMI capacitor (C1, C2, C3, C4) and common mode inductance T1.
Anode in circuit is connected in series in first EMI resistance Rn1；Insurance is connected in series in the first EMI resistance Rn1 and the
The centre of two EMI resistance R1；The first EMI series circuit ground connection of first EMI capacitor C1 and the 2nd EMI capacitor C2 composition, first
The input side of EMI series circuit (not shown) is connected in parallel with the 2nd EMI resistance R1, the 3rd EMI capacitor C3 and the 4th EMI
2nd EMI series circuit (not shown) of capacitor C4 composition is parallel in power supply EMI filter circuit 120, common mode inductance T1
It is connected in series in the centre of the first EMI series circuit and the 2nd EMI series circuit.
The low-pass filter circuit that electromagnetic interface filter is made of current-limiting reactor and shunt capacitor, effect are to allow equipment
Frequency signal when normal work enters equipment, and has biggish inhibition to the interference signal of high frequency.EMI in the present invention
Filter circuit, function are the high-frequency impulse components inhibited in power supply line, and high frequency capacitance C1~C3 can be effective with common mode inductance
Ground inhibits the high-frequency impulse component in power supply.
First EMI resistance Rn1 is the anti-electric pressure surge NTC resistance of negative temperature coefficient, and preferably model 10D10R, F1 are from extensive
Double insurance silk, the 2nd EMI resistance R1 are current-limiting resistance, and 10 Ohmic power 1W, first, second, third and fourth EMI capacitor C1~C4 are height
Frequency filter capacitor, T1 are patch type common mode inductance.
Three, 130 embodiment of voltage protector circuit
Voltage protector circuit 130 includes anti-reverse diode D1, voltage clamping diode D2, zener diode D5, is used
In the constant-current source circuit 131 powered to zener diode, for the adjustment circuit 132 of adjustment circuit voltage, current sampling resistor
R5, the first and second filtering capacitance of voltage regulation (C7, C8), the first and second output impedance build-out resistor (R6, R7) and for inhibiting high frequency
The first and second of harmonic wave inhibits inductance (L1, L2).
Anti-reverse diode D1 is connected in series in the anode of voltage protector circuit 130, and voltage clamping diode D2 is in parallel
In the outlet side of anti-reverse diode D1；Constant-current source circuit 131 is connected in parallel on the outlet side of voltage clamping diode D2, two pole of pressure stabilizing
One end of pipe D5 connect with constant-current source circuit 131, the cathode of the other end and voltage protector circuit 130 connects；Adjustment circuit 132
Input terminal connect with constant-current source circuit 131, output end and current sampling resistor R5 be connected in series；First and second voltage regulation filtering electricity
The filtering series circuit (not shown) for holding (C7, C8) composition is parallel to the outlet side of sampling resistor R5；First and second output resistance
The matching series circuit of anti-build-out resistor (R6, R7) composition is connected in parallel on the outlet side of filtering series circuit；The output of match circuit
Side inhibits inductance (L1, L2) connection respectively at first and second.
Adjustment circuit includes the first and second adjustment triode (Q2, Q3) and the first and second adjustment diode (D6, D7)；First
The collector of adjustment triode Q2 is connect with the base stage of second adjustment triode Q3, the base stage and first of the first adjustment triode Q2
The input terminal connection of diode D6 is adjusted, the output end of the first adjustment diode D6 and the input terminal of second adjustment diode D7 connect
It connects, the output end of second adjustment diode D7 is connect with current sampling resistor R5 output end.
D1 is anti-power supply reverse connecting protection diode, and preferably model S1J, D2 are voltage clamping diode, preferably model
SMCJ78A, the transient impulse energy released higher than 78V, by surge voltage clamper in 78V.D3, D4 are diode BAS16, with electricity
R2, R3, triode Q1 composition constant-current source is hindered to power to zener diode D5, when supply voltage is higher than 30V, the work of D5 voltage-stabiliser tube
By cathode voltage clamper in 30V.
Over-voltage, current foldback circuit working principle are as follows: R5 is current sampling resistor and overcurrent protective resistance.The
The pole B of one adjustment triode Q2 is clamped at 30V, and when the conducting of the pole C, E of the first adjustment triode Q2, the electric current for flowing through R5 increases
Greatly, make the first adjustment triode Q2 E pole tension increase until the first adjustment triode Q2 the pole BE occur it is critical reverse-biased, first
Adjustment triode Q2 is begun to shut off, and when the first adjustment triode Q2 ends, second adjustment triode Q3 cut-off flows through the electric current of R5
It reduces, R5 both end voltage decline, the BE pole tension positively biased of the first adjustment triode Q2, the first adjustment triode Q2 starts to lead again
It is logical, so the first adjustment triode Q2 always works at switch state so that the first adjustment triode Q2 triode BE voltage with
Pipe pressure of the sum of the voltage of current sampling resistor R5 no more than diode the first adjustment diode D6, second adjustment diode D7
Drop, while so that second adjustment triode Q3 is also worked and adjusting state in switch power, thus by output voltage pressure stabilizing in highest
30V, maximum output current 1A；When input voltage is lower than 30V, output end voltage follows input terminal voltage.Wherein C7, C8
One, two filtering capacitance of voltage regulation, R6, R7 are the first and second output impedance build-out resistor, and first and second inhibition inductance L1, L2 inductance can press down
Power supply high-frequency harmonic processed.
Voltage protector circuit 130, function are current limiting pressure-limitings, inhibit improper surge voltage, by supply voltage clamper
In 30VDC.Transient voltage suppressor diode preferred model SMCJ78A, operating voltage 78V are resistant to improper surge voltage
80V continues 100 milliseconds；Voltage point cutting edge of a knife or a sword 600V continues the impact of 10 microseconds；Protect rear class power regulator part from impacting with high pressure.
Four, the first and second anti-transient state interrupts D.C. regulated power supply embodiment
Fig. 5, which is that 3.3VDC is anti-in airborne DC power supply in the present invention in the present invention, interrupts power supply stabilization circuit reality for electric transient
The schematic diagram of example is applied, Fig. 6, which is that 5VDC is anti-in airborne DC power supply in the present invention in the present invention, interrupts power supply pressure stabilizing electricity for electric transient
The schematic diagram of road embodiment, as it can be seen in figures 5 and 6, it includes to electricity that the first and second anti-transient state, which interrupts D.C. regulated power supply (140,150),
Road carries out the anti-reverse diode of regulated power supply (D402, D403) of reverse connecting protection, high-frequency filter capacitor (C402, C403), to electricity
Storage capacitor (C430, C431) that road is powered, the adjustable voltage stabilizing chip of output voltage (U402, U403), power supply chip are soft
Start-up capacitance (C411, C412) and the first and second output circuit (141, D151).
The anti-reverse diode of regulated power supply (D402, D403) is connected in series in the anode of circuit, high-frequency filter capacitor
(C402, C403) is connected in parallel on the outlet side of the anti-reverse diode of regulated power supply (D402, D403), storage capacitor (C430, C431)
It is connected in the outlet side of high-frequency filter capacitor (C402, C403), the outlet side and pressure stabilizing core of storage capacitor (C430, C431) in parallel
Piece (U402, U403) connection；The outlet side of voltage stabilizing chip (U402, U403) is connect with output circuit；Soft start capacitor (C411,
C412) anode respectively with voltage stabilizing chip (U402, U403) and circuit connects.
First anti-transient state interrupts D.C. regulated power supply 140, and function is that the 28VDC to come from generator is converted into avionics
The common D.C. regulated power supply 3.3V of equipment, wherein D402 is anti-power supply reverse connecting protection diode, and C402 is high-frequency filter capacitor
10nF/100V, wherein C430 storage capacitor 1000uF, when generator for electric transient when interrupting, storage capacitor C430 is to rear class
Voltage stabilizing chip continued power at least 200ms.U403 is output voltage adjustable height efficiency (power conversion 85%) voltage stabilizing chip, preferably
Model LM2825N-ADJ, C411 are power supply chip soft start capacitor, anti-to power on unsteady state impact, upon power-up voltage stabilizing chip
Voltage stabilizing chip just works normally when interior position slowly charges to high level to capacitor C411.
With anti-for electric transient interruption and 3.3VDC power supply stabilization circuit, function is the 28VDC that will come from generator
It is converted into the common D.C. regulated power supply 3.3V of Aerial Electronic Equipment, while C430 storage capacitor 1000uF, when the power supply wink of generator
When state is interrupted, storage capacitor C430 gives rear class voltage stabilizing chip continued power at least 200ms.
Second anti-transient state interrupts D.C. regulated power supply 150, and function is that the 28VDC to come from generator is converted into avionics
The common D.C. regulated power supply 5V of equipment, wherein D403 is anti-power supply reverse connecting protection diode, and C403 is high-frequency filter capacitor
10nF/100V, wherein C431 storage capacitor 1000uF, when generator for electric transient when interrupting, storage capacitor gives rear class pressure stabilizing
Chip continued power at least 200ms.
For the DC power supply in airborne by the phases such as lightening strikes or the variation of onboard generators operating condition, airborne equipment
Mutually interference when, aircraft airborne equipment power supply occur due to voltage spikes, surge, it is under-voltage the problems such as, implement proposed by the present invention one
The airborne DC power supply of kind overcomes previous airborne DC power supply by lightening strikes or the variation of onboard generators operating condition, machine
Carry the due to voltage spikes occurred when equipment etc. interferes with each other, surge, it is under-voltage the problems such as, while also meet China Aviation general bureau about
Airborne equipment need to meet the 16th chapter of RTCA/AO-160F " airborne equipment environmental condition and test method " airworthiness requirement, and " power supply is defeated
Enter " the improper surge voltage 80V of tolerance, continue 100 milliseconds；Voltage point cutting edge of a knife or a sword 600V continues the impact of 10 microseconds；The power supply of power supply transient state
Interrupt 200 milliseconds of test and the test requirements document of the 22nd chapter " lightning induction transient state sensibility ".
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (7)
1. a kind of airborne DC power supply, which is characterized in that fast including being used for airborne DC power supply circuit when by lightening strikes
Fast pressure stabilizing, the thunder-lightning circuit (110) for moving most of surge energy, for being filtered out to the high-frequency interferencing signal in circuit
Power supply EMI filter circuit (120), for airborne direct current power source voltage current limiting pressure-limiting have Anti-surging, over-voltage and mistake
It is common straight that the voltage protector circuit (130) of stream and the DC voltage for sending over generator are converted into Aerial Electronic Equipment
The anti-transient state for flowing regulated power supply interrupts power supply stabilization circuit, and it included the first and second anti-wink that the anti-transient state, which interrupts power supply stabilization circuit,
State interrupts D.C. regulated power supply (140,150)；
The voltage protector circuit (130) includes anti-reverse diode D1, voltage clamping diode D2, zener diode D5,
Constant-current source circuit (131) for powering to zener diode, adjustment circuit (132), sampling electricity for adjustment circuit voltage
Hinder R5, the first and second filtering capacitance of voltage regulation (C7, C8), the first and second output impedance build-out resistor (R6, R7) and for inhibiting high
The first and second of frequency harmonic wave inhibits inductance (L1, L2)；Adjustment circuit (132) include first and second adjustment triode (Q2, Q3) and
First and second adjustment diode (D6, D7)；The collector of the first adjustment triode Q2 is with the second adjustment triode Q3's
Base stage connection, the base stage of the first adjustment triode Q2 connect with the input terminal of the first adjustment diode D6, and described the
The output end of one adjustment diode D6 is connect with the input terminal of the second adjustment diode D7, the second adjustment diode D7
Output end connect with current sampling resistor R5 output end；
The anti-reverse diode D1 is connected in series in the anode of the voltage protector circuit (130), the voltage clamping two
Pole pipe D2 is connected in parallel on the outlet side of the anti-reverse diode D1；The constant-current source circuit (131) is connected in parallel on the voltage clamping
The outlet side of diode D2, one end of the zener diode D5 connect with the constant-current source circuit (131), the other end with it is described
The cathode of voltage protector circuit (130) connects；The input terminal of the adjustment circuit (132) and the constant-current source circuit (131)
Connection, output end and the sampling resistor R5 are connected in series；The filtering of first and second filtering capacitance of voltage regulation (C7, the C8) composition
Series circuit (not shown) is parallel to the outlet side of sampling resistor R5；The first and second output impedance build-out resistor (R6,
R7) the matching series circuit formed is connected in parallel on the outlet side of filtering series circuit；The outlet side of match circuit is respectively at described
One, two inhibit inductance (L1, L2) connection.
2. a kind of airborne DC power supply according to claim 1, which is characterized in that the thunder-lightning circuit (110) includes
For the first, second and third ceramic gas discharge tube (GDT1, GDT2, GDT3) of pressure stabilizing and reduction surge energy, for bearing circuit
The first, second and third varistor (VDR1, VDR2, VDR3) of peak point current and for the first, second and third of suppressor pulse energy
Voltage transient inhibits diode (TVS1, TVS2, TVS3).
3. a kind of airborne DC power supply according to claim 2, which is characterized in that first ceramic gas discharge tube
GDT1 is connect with the second ceramic gas discharge tube GDT2, the first and second ceramic gas discharge tube (GDT1, GDT2) connection
The first thunder-lightning series circuit ground connection of composition, the third ceramic gas discharge tube GDT3 are connected in parallel on the first thunder-lightning string
Join the outlet side of circuit；The first varistor VDR1 is connect with the second varistor VDR21, first and second pressure
The second thunder-lightning series circuit ground connection of quick resistance (VDR1, VDR2) connection composition, the third varistor VDR3 are connected in parallel on
The outlet side of the second thunder-lightning series circuit；The first voltage Transient Suppression Diode TVS1 and the second voltage wink
State inhibits diode TVS2 connection, and first and second voltage transient inhibits the third of diode (TVS1, TVS2) connection composition anti-
Thunder and lightning series circuit ground connection, the tertiary voltage Transient Suppression Diode TVS3 are connected in parallel on the third thunder-lightning series circuit
Outlet side.
4. a kind of airborne DC power supply according to claim 1, which is characterized in that the power supply EMI filter circuit (120)
Including the first EMI resistance Rn1 for anti-voltage surge, the 2nd EMI resistance R1 for carrying out current limliting to circuit, for electricity
Road carry out overcurrent protection self- recoverage insure F1, for being filtered to circuit the first, second, third and fourth EMI capacitor (C1, C2,
C3, C4) and chip inductor T1.
5. a kind of airborne DC power supply according to claim 4, which is characterized in that the first EMI resistance Rn1 series connection connects
Connect anode in circuit；The insurance is connected in series in the first EMI resistance Rn1 and the 2nd EMI resistance R1
Between；The first EMI series circuit ground connection of the first EMI capacitor C1 and the 2nd EMI capacitor C2 composition, the first EMI
The input side of series circuit is connected in parallel with the 2nd EMI resistance R1, the 3rd EMI capacitor C3 and the 4th EMI electricity
The 2nd EMI series circuit for holding C4 composition is parallel in the power supply EMI filter circuit 120, and the chip inductor T1 series connection connects
It connects in the centre of the first EMI series circuit and the 2nd EMI series circuit.
6. a kind of airborne DC power supply according to claim 1, which is characterized in that the first and second anti-transient state is interrupted straight
Stream regulated power supply (140,150) includes the anti-reverse diode of regulated power supply (D402, D403) that reverse connecting protection is carried out to circuit, height
Frequency filter capacitor (C402, C403), the storage capacitor (C430, C431) that circuit is powered, the adjustable pressure stabilizing of output voltage
Chip (U402, U403), power supply chip soft start capacitor (C411, C412) and the first and second output circuit (141, D151).
7. a kind of airborne DC power supply according to claim 6, which is characterized in that the anti-reverse diode of regulated power supply
(D402, D403) is connected in series in the anode of circuit, and the high-frequency filter capacitor (C402, C403) is connected in parallel on the regulated power supply
The outlet side of anti-reverse diode (D402, D403), the storage capacitor (C430, C431) are connected in the High frequency filter in parallel
The outlet side of capacitor (C402, C403), the outlet side of the storage capacitor (C430, C431) and the voltage stabilizing chip (U402,
U403 it) connects；The outlet side of the voltage stabilizing chip (U402, U403) is connect with output circuit；The soft start capacitor (C411,
C412) anode respectively with the voltage stabilizing chip (U402, U403) and circuit connects.
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| CN110165884A (en) * | 2017-10-17 | 2019-08-23 | 北京瀚悦达科技股份有限公司 | A kind of high voltage power supply second class protection system |
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| CN110912387B (en) * | 2019-11-13 | 2021-03-05 | 北京航天易联科技发展有限公司 | Power supply circuit and military equipment system |
| CN111245210A (en) * | 2019-12-31 | 2020-06-05 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Construction method of high-power high-efficiency direct-current power supply |
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| CN112309093A (en) * | 2020-11-23 | 2021-02-02 | 北京航宇军科机电设备有限公司 | Air broadcast alarm system |
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Address after: 518034 Guangdong city of Shenzhen province Nanshan District Gao Xin Road Fiyta Technology Building Patentee after: Feiyada Precision Technology Co.,Ltd. Address before: 518034 Guangdong city of Shenzhen province Nanshan District Gao Xin Road Fiyta Technology Building Patentee before: FIYTA HOLDINGS Ltd. |
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Denomination of invention: Airborne DC power supply Effective date of registration: 20231110 Granted publication date: 20190910 Pledgee: Shenzhen Branch of China Merchants Bank Co.,Ltd. Pledgor: Feiyada Precision Technology Co.,Ltd. Registration number: Y2023980064589 |