CN106505842A - Airborne DC source - Google Patents
Airborne DC source Download PDFInfo
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- CN106505842A CN106505842A CN201610911183.1A CN201610911183A CN106505842A CN 106505842 A CN106505842 A CN 106505842A CN 201610911183 A CN201610911183 A CN 201610911183A CN 106505842 A CN106505842 A CN 106505842A
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- 230000008859 change Effects 0.000 abstract description 10
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- IWUCXVSUMQZMFG-AFCXAGJDSA-N Ribavirin Chemical compound N1=C(C(=O)N)N=CN1[C@H]1[C@H](O)[C@H](O)[C@@H](CO)O1 IWUCXVSUMQZMFG-AFCXAGJDSA-N 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
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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 source, including for airborne DC power supply circuit be subject to lightening strikes when, rapid voltage stabilizing, move the thunder-lightning circuit of most of surge energy, for the power supply EMI filter circuit filtered by the high-frequency interferencing signal in circuit, for to airborne direct current power source voltage current limiting pressure-limiting with Anti-surging, the voltage protector circuit and the DC voltage for sending over electromotor of overvoltage and excessively stream is converted into the anti-transient state of the conventional D.C. regulated power supply of Aerial Electronic Equipment and interrupts power supply stabilization circuit, the anti-transient state interrupts power supply stabilization circuit includes first, two anti-transient states interrupt D.C. regulated power supply；Implement the present invention, implement airborne DC source proposed by the present invention and can efficiently solve aircraft in flight course, when being subjected to lightening strikes or onboard generators working conditions change, airborne equipment etc. and interfering, there is due to voltage spikes, surge, under-voltage problem to airborne DC source in aircraft airborne equipment power supply.
Description
Technical field
The present invention relates to technical field of direct current power, more particularly, it relates to one kind meets airworthiness requirement, there is lightning protection
The airborne DC source of the functions such as electricity, Anti-surging, overvoltage, overcurrent protection and under-voltage afterflow.
Background technology
Aircraft flight can meet with often lightening strikes, thunder and lightning is a kind of natural phenomena, be day in the air powered cloud layer to another
A kind of band xenogenesis electric charge cloud layer or powered cloud layer swift and violent discharge process over the ground.There is hardware installed in fuselage and meet illiteracy
The Aerial Electronic Equipments such as the DC source on the aircraft of skin component, if without lightning protection measures, it is most likely that directly attack thunder and lightning is subjected to
Hit, or by failure in thunder and lightning transient state INDUCED ELECTROMAGNETIC PULSE energy impact or damage；In addition, in flight course, can also be because
The interactive interference such as high-altitude complex environment, onboard generators working conditions change, airborne equipment, the aircraft airborne equipment power supply for causing
There is due to voltage spikes, surge, the phenomenon such as under-voltage, airborne Aerial Electronic Equipment failure or can damage.Therefore, airborne Aerial Electronic Equipment
DC source is both needed to functions such as thunder-lightning, Anti-surging, overvoltage, overcurrent protection, under-voltage afterflows, to Flight Safety extremely
Important.
When aircraft flight in the air, if airborne DC source be struck by lightning or flight equipment interactive interference and cause to navigate
Electric system cisco unity malfunction, may produce catastrophic consequence.Therefore the thunder-lightning of airborne DC source, Anti-surging, mistake
The functions such as pressure, overcurrent protection, under-voltage afterflow are the important contents of Aerial Electronic Equipment design.
Content of the invention
It is being subjected to the phase such as lightening strikes or onboard generators working conditions change, airborne equipment for the DC source in airborne
When mutually disturbing, aircraft airborne equipment power supply occur due to voltage spikes, surge, under-voltage the problems such as, propose one kind meet seaworthiness will
The airborne DC source of the functions such as thunder-lightning, Anti-surging, overvoltage, overcurrent protection and under-voltage afterflow is sought, has, it is contemplated that
A kind of airborne DC source for meeting airworthiness requirement of design.Required according to China Aviation general bureau, airborne equipment need to meet RTCA/
AO-160F《Airborne equipment environmental condition and test method》The 16th chapter of airworthiness requirement《Power input》Tolerate 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
22nd chapter《Lightning induction transient state sensitivity》Test requirements document.
A kind of airborne DC source, including for airborne DC power supply circuit be subject to lightening strikes when, rapid voltage stabilizing, shifting
Fall the thunder-lightning circuit of most of surge energy, filter for the power supply EMI filtered by the high-frequency interferencing signal in circuit
Circuit, for the voltage protector circuit with Anti-surging, overvoltage and excessively stream to airborne direct current power source voltage current limiting pressure-limiting
And the DC voltage for sending over electromotor is converted into the anti-transient state interruption of the conventional D.C. regulated power supply of Aerial Electronic Equipment
Power supply stabilization circuit, the anti-transient state interrupts power supply stabilization circuit includes that first and second anti-transient state interrupts D.C. regulated power supply.
The thunder-lightning circuit includes for voltage stabilizing and reduces first, second and third ceramic gas discharge tube of surge energy, uses
In first, second and third varistor for bearing current peak electric current and the first, second and third voltage wink for suppressor pulse energy
State suppresses diode.
First ceramic gas discharge tube is connected with second ceramic gas discharge tube, described first and second ceramic gas
The first thunder-lightning series circuit ground connection of body discharge tube connection composition, the 3rd ceramic gas discharge tube are connected in parallel on described first
The outlet side of thunder-lightning series circuit；First varistor is connected 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 3rd varistor is connected in parallel on second lightning protection
The outlet side of circuit；The first voltage Transient Suppression Diode is connected with the second voltage Transient Suppression Diode, described
First and second voltage transient suppresses the 3rd 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 3rd thunder-lightning series circuit.
The power supply EMI filter circuit includes an EMI resistance for anti-voltage surge, for carrying out current limliting to circuit
The 2nd EMI resistance, for circuit is carried out overcurrent protection self- recoverage insurance, for circuit is filtered first and second,
3rd, four EMI electric capacity and chip inductor.
First EMI resistant series connection positive pole in circuit；The insurance is connected in series in the EMI electricity
Hinder the centre with the 2nd EMI resistance；The EMI series electricals that the first EMI electric capacity is constituted with the 2nd EMI electric capacity
Road ground connection, the input side of EMI series circuits be connected with the 2nd EMI resistor coupled in parallel, the 3rd EMI electric capacity with described
2nd EMI series circuits of the 4th EMI electric capacity composition are parallel in the power supply EMI filter circuit, the chip inductor series connection
It is connected to the centre of EMI series circuits and the 2nd EMI series circuits.
The voltage protector circuit includes anti-reverse diode, voltage clamp diode, and Zener diode, for institute
The constant-current source circuit that Zener diode is powered is stated, for the adjustment circuit of adjustment circuit voltage, sampling resistor, first and second voltage stabilizing
Filter capacitor, first and second output impedance build-out resistor and the first and second suppression inductance for suppressing high-frequency harmonic.
The anti-reverse Diode series are connected to the positive pole of voltage protector circuit, the voltage clamp diodes in parallel
Outlet side in the anti-reverse diode；The constant-current source circuit is connected in parallel on the outlet side of the voltage clamp diode, institute
The one end for stating Zener diode is connected with the constant-current source circuit, the other end is connected with the negative pole of the voltage protector circuit；
The input of the adjustment circuit is connected with the constant-current source circuit, outfan is connected with the employing resistant series；Described
First, 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 coupling series circuit of impedance matching resistor composition is connected in parallel on the outlet side of the filtering series circuit；The match circuit defeated
Go out side and suppress inductance connection respectively at described first and second.
The adjustment circuit includes first and second adjustment audion and first and second adjustment diode；First adjustment three
The colelctor electrode of pole pipe is connected with the base stage of the described second adjustment audion, the base stage and described first of the first adjustment audion
The input connection of adjustment diode, the outfan of the first adjustment diode and the described second input for adjusting diode
Connection, the outfan current collection respectively with the emitter stage and the second audion of first audion of the second adjustment diode
Pole connects.
The first and second anti-transient state interrupts the regulated power supply counnter attack that D.C. regulated power supply includes carrying out circuit reverse connecting protection
Connect diode, high-frequency filter capacitor, the storage capacitor is powered by circuit, the adjustable voltage stabilizing chip of output voltage, power supply core
Piece soft start capacitor and output circuit.
The anti-reverse Diode series of the regulated power supply are connected to the positive pole 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 connected with the voltage stabilizing chip；The outlet side of the voltage stabilizing chip and the output circuit
Connection；The soft start capacitor is connected with the positive pole of the voltage stabilizing chip and circuit respectively.
It is being subjected to the phase such as lightening strikes or onboard generators working conditions change, airborne equipment for the DC source in airborne
When mutually disturbing, aircraft airborne equipment power supply occur due to voltage spikes, surge, under-voltage the problems such as, implement proposed by the present invention one
Airborne DC source is planted, airborne DC source in the past is overcome and is being subjected to lightening strikes or onboard generators working conditions change, machine
Due to voltage spikes that load equipment etc. occurs when interfering, surge, under-voltage the problems such as, while also meet China Aviation general bureau with regard to
Airborne equipment need to meet RTCA/AO-160F《Airborne equipment environmental condition and test method》The 16th chapter of airworthiness requirement《Power supply is defeated
Enter》Improper surge voltage 80V is tolerated, continues 100 milliseconds；Voltage point cutting edge of a knife or a sword 600V, continues the impact of 10 microseconds；Power supply transient state is powered
Interrupt 200 milliseconds of test, and the 22nd chapter《Lightning induction transient state sensitivity》Test requirements document.
Description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is that in airborne DC source, DC source constitutes the composition logical schematic of embodiment in the present invention；
Fig. 2 is the schematic diagram of lightning protection circuit embodiment in airborne DC source in the present invention；
Fig. 3 be in the present invention in the present invention in airborne DC source 120 embodiment of power supply EMI filter circuit schematic diagram；
Fig. 4 be in the present invention in the present invention in airborne DC source protection circuit embodiment schematic diagram；
Fig. 5 is that in the present invention, in airborne DC source, the anti-confession electric transient of 3.3VDC interrupts power supply stabilization circuit reality in the present invention
Apply the schematic diagram of example；
Fig. 6 is that in the present invention, in airborne DC source, the anti-confession electric transient of 5VDC interrupts power supply stabilization circuit enforcement in the present invention
The schematic diagram of example.
Specific embodiment
When aircraft flight in the air, if airborne DC source be struck by lightning or flight equipment interactive interference and cause to navigate
Electric system cisco unity malfunction, may produce catastrophic consequence.Therefore the thunder-lightning of airborne DC source, Anti-surging, mistake
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 source be subjected to lightening strikes or
When onboard generators working conditions change, airborne equipment etc. are interfered, there is due to voltage spikes, wave in aircraft airborne equipment power supply
Gush, under-voltage the problems such as.
Fig. 1 is that in airborne DC source, DC source constitutes the composition logical schematic of embodiment in the present invention, such as Fig. 1 institutes
Show, the technical scheme is that：It is contemplated that a kind of airborne DC source for meeting airworthiness requirement of design.According to middle CA
Empty general bureau requires that airborne equipment need to meet RTCA/AO-160F《Airborne equipment environmental condition and test method》Airworthiness requirement the 16th
Chapter《Power input》Improper surge voltage 80V is tolerated, 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 22nd chapter《Lightning induction transient state sensitivity》Test requirements document.Airborne unidirectional current
It is steady that source includes that thunder-lightning circuit 110, power supply EMI filter circuit 120, voltage protector circuit 130 and anti-transient state interrupt power supply
Volt circuit；Thunder-lightning circuit 110 voltage stabilizing, shifting can fall most of surge energy rapidly when aircraft receives lightening strikes；Power supply
EMI filter circuit 120 is filtered to the high-frequency interferencing signal in airborne DC source, and when allowing Aerial Electronic Equipment normal work
Frequency signal enter；Voltage protector circuit 130 carries out current limiting pressure-limiting to circuit, suppresses improper surge voltage, by power supply
Voltage clamp is in 30VDC；Anti- transient state interrupts power supply stabilization circuit prevents power supply transient state from interrupting, and will send from electromotor
28VDC be converted into conventional the D.C. regulated power supply 3.3V and 5VDC of Aerial Electronic Equipment, and the power supply for continuing for some time.Implement this
The airborne DC source that invention is proposed can efficiently solve aircraft in flight course, and airborne DC source is attacked being subjected to thunder and lightning
Hit or when onboard generators working conditions change, airborne equipment etc. are interfered, voltage point occurs in aircraft airborne equipment power supply
Peak, surge, under-voltage problem, while also comply with RTCA/AO-160F《Airborne equipment environmental condition and test method》Seaworthiness will
Ask, the present invention is described in detail below in conjunction with accompanying drawing.
First, 110 embodiment of thunder-lightning circuit
Fig. 2 is the schematic diagram of lightning protection circuit embodiment in airborne DC source in the present invention, as shown in Fig. 2 thunder-lightning is electric
Road 110 includes for voltage stabilizing and reduces first, second and third ceramic gas discharge tube (GDT1, GDT2, GDT3) of surge energy, uses
In 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 suppresses diode (TVS1, TVS2, TVS3).
First ceramic gas discharge tube GDT1 is connected with the second ceramic gas discharge tube GDT2, and first and second ceramic gas are put
The first thunder-lightning series circuit ground connection (not shown) of fulgurite connection composition, the 3rd ceramic gas discharge tube GDT3 are connected in parallel on
The outlet side of the first thunder-lightning series circuit；First varistor VDR1 is connected 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, the 3rd varistor VDR3
It is connected in parallel on the outlet side of the second thunder-lightning series circuit；First voltage Transient Suppression Diode TVS1 is suppressed with second voltage transient state
Diode TVS2 connects, and first and second voltage transient suppresses the 3rd 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 the 3rd thunder-lightning series circuit
Side.
The addition of lightning protection component can not affect the normal work of circuit, and this will ensure the dc breakdown voltage of lightning protection component
Lower limit necessarily be greater than the maximum normal working voltage of circuit.Determine the highest instantaneous voltage value that circuit can bear, be really
The impact flashover voltage value for protecting lightning protection component have to be lower than this value.To guarantee to carry out interim, the reflection of lightning protection component when moment overvoltage
Speed is faster than the reflection speed of circuit, does sth. before others have a chance to and for overvoltage to be limited in safety value.According to the impact that may be scurried in circuit
Current intensity, 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 recovers high-impedance state in time, in order to avoid affect the normal work of circuit.
According to《Lightning induction transient state sensitivity》Test requirements document, equipment choice test class 2 in fuselage, Performance Level A,
Single pulse surge waveform 5A crest voltage, electric current are 125V/400A, persistent period 120us；Multiple pulses impact test
The crest voltage of No. 3 sinusoidal decay ripples of waveform or cosine decaying wave (1Mhz), electric current are 250V/50A.According to formula：Pulse
Energy=k*V (t) * I (t) * t, wherein k is shape factor；V (t) represents that maximum clamp voltage, I (t) are represented and puncture peak value electricity
Stream；T represents the persistent period 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 of normal circuit operation input is 32.2V, the lightning protection circuit breakdown protection voltage present invention preferably 75V.
The lightning protection circuit of the present 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), the noble gases inside which filled with certain species and concentration, works as surge voltage
During appearance, in pipe, gas is ionized electric discharge, the voltage at pipe two ends is declined rapidly, and the transfer of most of surge energy is fallen.Work as wave
After gushing disappearance, its impedance recovers again to infinity.Its advantage：Small volume, bears discharge current greatly, through-current capability (10-15KA),
Parasitic capacitance is little, and leakage current is little.First, second and third ceramic gas discharge tube (GDT1, GDT2, GDT3) that the present invention is selected is preferably
Model UN2E5-75L, breakdown voltage 75V tolerate electric current 5000A, tolerate pulse energy 7.5J.
Lightning protection circuit intergrade protection circuit is first, second and third varistor of metal-oxide (VDR1, VDR2, VDR3),
Preferred model V68ZA10P of the present invention, is characterized in that peak point current ability to bear is big, maximum up to 10000A, bears pulse
Energy 33J, parasitic capacitance 10000pF, two interelectrode capacities play certain filter action to power line.
In lightning protection circuit, rear class protection circuit is first, second and third transient voltage suppressor diode (TVS1, TVS2, TVS3),
Preferred model SMDJ75A of the present invention, is characterized in that response time is quick (ns levels), and 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 adopt prime, intergrade with
And the three-level composite construction of rear class composition, but in actual enforcement can be according to actual needs level Four composite construction or its
Its more stages circuit composite construction circuit, the discrete component in the present embodiment in every stage circuit are connected in parallel in this grade of series circuit
Outlet side, but in implementation process, this grade of series circuit can also be connected in parallel on the outlet side of discrete component.
Lightning protection component is connected across positive source and shell ground, power cathode and shell ground respectively, positive source and power cathode it
Between.When lightning protection component the two poles of the earth are subject to thunder and lightning transient state high energy impact events, the high impedance between two-stage can be become with the speed of ns levels
Low ESR, releases and up to counts the surge power of kW from shell, makes the voltage clamp of two interpolars in a predetermined value, effective protection its
Destruction of the Sensitive Apparatuses of rear class electronic circuit from surge pulse.
2nd, 120 embodiment of power supply EMI filter circuit
Fig. 3 be in the present invention in the present invention in airborne DC source 120 embodiment of power supply EMI filter circuit schematic diagram,
As shown in figure 3, power supply EMI filter circuit 120 include EMI resistance Rn1 for anti-voltage surge, for carrying out to circuit
2nd EMI resistance R1 of current limliting, for circuit is carried out overcurrent protection self- recoverage insurance F1, for be filtered to circuit
First, second, third and fourth EMI electric capacity (C1, C2, C3, C4) and common mode inductance T1.
First EMI resistance Rn1 are connected in series positive pole in circuit；Insurance is connected in series in an EMI resistance Rn1 and the
The centre of two EMI resistance R1；First EMI electric capacity C1 and the 2nd EMI electric capacity C2 composition EMI series circuits ground connection, first
The input side of EMI series circuit (not shown)s is connected in parallel with the 2nd EMI resistance R1, the 3rd EMI electric capacity C3 and the 4th EMI
2nd EMI series circuit (not shown)s of electric capacity C4 compositions are parallel in power supply EMI filter circuit 120, common mode inductance T1
It is connected in series in the centre of EMI series circuits and the 2nd EMI series circuits.
The low-pass filter circuit that electromagnetic interface filter is made up of current-limiting reactor and shnt capacitor, its effect is permission equipment
Frequency signal access arrangement during normal work, and have larger inhibition to the interference signal of high frequency.EMI in the present invention
Filter circuit, its function are to suppress the high-frequency impulse component in power line, and high frequency capacitance C1～C3 can be effective with common mode inductance
Ground suppresses the high-frequency impulse component in power supply.
First EMI resistance Rn1 is the anti-voltage surge NTC resistance of negative temperature coefficient, preferred model 10D10R, and F1 is 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 electric capacity C1～C4 are height
Frequency filter capacitor, T1 are SMD common mode inductance.
3rd, 130 embodiment of voltage protector circuit
Voltage protector circuit 130 includes anti-reverse diode D1, and voltage clamp diode D2, Zener diode D5 are used
In the constant-current source circuit 131 that powers to Zener diode, for the adjustment circuit 132, current sampling resistor of adjustment circuit voltage
R5, first and second filtering capacitance of voltage regulation (C7, C8), first and second output impedance build-out resistor (R6, R7) and for suppressing high frequency
First and second suppression inductance (L1, L2) of harmonic wave.
Anti-reverse diode D1 is connected in series in the positive pole of voltage protector circuit 130, and voltage clamp diode D2 is in parallel
Outlet side in anti-reverse diode D1；Constant-current source circuit 131 is connected in parallel on the outlet side of voltage clamp diode D2, two pole of voltage stabilizing
One end of pipe D5 is connected with constant-current source circuit 131, the connection of the negative pole of the other end and voltage protector circuit 130；Adjustment circuit 132
Input be connected with constant-current source circuit 131, outfan and current sampling resistor R5 are connected in series；First and second voltage regulation filtering electricity
The filtering series circuit (not shown) that appearance (C7, C8) is constituted is parallel to the outlet side of sampling resistor R5；First and second output resistance
The coupling series circuit that anti-build-out resistor (R6, R7) is constituted is connected in parallel on the outlet side of filtering series circuit；The output of match circuit
Side suppresses inductance (L1, L2) connection respectively at first and second.
Adjustment circuit includes first and second adjustment audion (Q2, Q3) and first and second adjustment diode (D6, D7)；First
The colelctor electrode of adjustment audion Q2 is connected with the base stage of the second adjustment audion Q3, the base stage and first of the first adjustment audion Q2
The input of the input connection of adjustment diode D6, the outfan of the first adjustment diode D6 and the second adjustment diode D7 connects
Connect, the outfan of the second adjustment diode D7 is connected with current sampling resistor R5 outfans.
D1 is anti-power supply reverse connecting protection diode, preferably model S1J, and D2 is voltage clamp diode, preferably model
SMCJ78A, the transient impulse energy that releases higher than 78V, by surge voltage clamper in 78V.D3, D4 are diode BAS16, with electricity
Resistance R2, R3, audion Q1 composition constant-current sources are powered to Zener diode D5, and when supply voltage is higher than 30V, D5 stabilivolts work
By cathode voltage clamper in 30V.
Overvoltage, current foldback circuit operation principle are：R5 is current sampling resistor, and overcurrent protective resistance.The
The B poles of one adjustment audion Q2 are clamped at 30V, and when C, E pole of the first adjustment audion Q2 turns on, the electric current for flowing through R5 increases
Greatly, make the E pole tensions increase of the first adjustment audion Q2 critical reverse-biased up to the BE poles appearance of the first adjustment audion Q2, first
Adjustment audion Q2 begins to shut off, and when the first adjustment audion Q2 cut-offs, the second adjustment audion Q3 cut-offs, flows through the electric current of R5
Reduce, R5 both end voltages decline, the BE pole tension positively biaseds of the first adjustment audion Q2, the first adjustment audion Q2 start to lead again
Logical, so the first adjustment audion Q2 always works on off state so that the first adjustment audion Q2 audion BE voltages with
The voltage sum of current sampling resistor R5 is not more than the adjustment diode D6 of diode first, the pipe pressure of the second adjustment diode D7
Drop, at the same make the second adjustment audion Q3 be also operated in switch power adjustment state, so as to by output voltage voltage stabilizing in highest
30V, maximum output current 1A；When input voltage is less than 30V, output end voltage follows input terminal voltage.Wherein C7, C8 are the
First, two filtering capacitance of voltage regulation, R6, R7 are first and second output impedance build-out resistor, and first and second suppresses inductance L1, L2 inductance press down
Power supply high-frequency harmonic processed.
Voltage protector circuit 130, its function are current limiting pressure-limitings, suppress improper surge voltage, by supply voltage clamper
In 30VDC.Preferred model SMCJ78A of transient voltage suppressor diode, running 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；Rear class power regulator part is protected from impacting with high pressure.
4th, first and second anti-transient state interrupts D.C. regulated power supply embodiment
Fig. 5 is that in the present invention, in airborne DC source, the anti-confession electric transient of 3.3VDC interrupts power supply stabilization circuit reality in the present invention
The schematic diagram of example is applied, Fig. 6 is that the anti-confession electric transient of 5VDC interrupts power supply voltage stabilizing electricity in airborne DC source in the present invention in the present invention
The schematic diagram of road embodiment, as it can be seen in figures 5 and 6, first and second anti-transient state interrupt D.C. regulated power supply (140,150) include to electricity
Road carries out the regulated power supply anti-reverse diode (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 first and second output circuit (141, D151).
The anti-reverse diode of regulated power supply (D402, D403) is connected in series in the positive pole 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 of storage capacitor (C430, C431) and voltage stabilizing core in parallel
Piece (U402, U403) connects；The outlet side of voltage stabilizing chip (U402, U403) is connected with output circuit；Soft start capacitor (C411,
C412) connect with the positive pole of voltage stabilizing chip (U402, U403) and circuit respectively.
First anti-transient state interrupts D.C. regulated power supply 140, and its function is that the 28VDC come from electromotor is converted into avionics
The conventional D.C. regulated power supply 3.3V of equipment, wherein D402 are anti-power supply reverse connecting protection diode, and C402 is high-frequency filter capacitor
10nF/100V, wherein C430 storage capacitors 1000uF, when the confession electric transient of electromotor is interrupted, 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, prevent upper electricity unsteady state impact, upon power-up voltage stabilizing chip
Voltage stabilizing chip ability normal work when interior position slowly charges to high level to electric capacity C411.
There is anti-confession electric transient to interrupt and 3.3VDC power supply stabilization circuits, its function is the 28VDC that will come from electromotor
The conventional D.C. regulated power supply 3.3V of Aerial Electronic Equipment is converted into, while C430 storage capacitor 1000uF, when the power supply wink of electromotor
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 its function is that the 28VDC come from electromotor is converted into avionics
The conventional D.C. regulated power supply 5V of equipment, wherein D403 are anti-power supply reverse connecting protection diode, and C403 is high-frequency filter capacitor
10nF/100V, wherein C431 storage capacitors 1000uF, when the confession electric transient of electromotor is interrupted, storage capacitor gives rear class voltage stabilizing
Chip continued power at least 200ms.
It is being subjected to the phase such as lightening strikes or onboard generators working conditions change, airborne equipment for the DC source in airborne
When mutually disturbing, aircraft airborne equipment power supply occur due to voltage spikes, surge, under-voltage the problems such as, implement proposed by the present invention one
Airborne DC source is planted, airborne DC source in the past is overcome and is being subjected to lightening strikes or onboard generators working conditions change, machine
Due to voltage spikes that load equipment etc. occurs when interfering, surge, under-voltage the problems such as, while also meet China Aviation general bureau with regard to
Airborne equipment need to meet RTCA/AO-160F《Airborne equipment environmental condition and test method》The 16th chapter of airworthiness requirement《Power supply is defeated
Enter》Improper surge voltage 80V is tolerated, continues 100 milliseconds；Voltage point cutting edge of a knife or a sword 600V, continues the impact of 10 microseconds；Power supply transient state is powered
Interrupt 200 milliseconds of test, and the 22nd chapter《Lightning induction transient state sensitivity》Test requirements document.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in,
Should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (10)
1. a kind of airborne DC source, it is characterised in that include for airborne DC power supply circuit when lightening strikes are subject to, fast
Fast voltage stabilizing, the thunder-lightning circuit (110) for moving most of surge energy, filter for the high-frequency interferencing signal in circuit
Power supply EMI filter circuit (120), for airborne direct current power source voltage current limiting pressure-limiting with Anti-surging, overvoltage and mistake
It is conventional straight that the voltage protector circuit (130) of stream and the DC voltage for sending over electromotor are converted into Aerial Electronic Equipment
The anti-transient state of stream regulated power supply interrupts power supply stabilization circuit, and the anti-transient state interrupts power supply stabilization circuit included for first and second anti-wink
State interruption D.C. regulated power supply (140,150).
2. a kind of airborne DC source according to claim 1, it is characterised in that thunder-lightning circuit (110) include
For voltage stabilizing and first, second and third ceramic gas discharge tube (GDT1, GDT2, GDT3) of minimizing surge energy, for bearing circuit
First, second and third varistor (VDR1, VDR2, VDR3) of peak point current and for suppressor pulse energy first, second and third
Voltage transient suppresses diode (TVS1, TVS2, TVS3).
3. a kind of airborne DC source according to claim 2, it is characterised in that first ceramic gas discharge tube
GDT1 is connected with the second ceramic gas discharge tube GDT2, and first and second ceramic gas discharge tube (GDT1, the GDT2) connects
The first thunder-lightning series circuit ground connection of composition, the 3rd ceramic gas discharge tube GDT3 are connected in parallel on the first thunder-lightning string
The outlet side of connection circuit；The first varistor VDR1 is connected 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 3rd 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 suppresses diode TVS2 connections, first and second voltage transient to suppress the 3rd of diode (TVS1, TVS2) connection composition to prevent
Thunder and lightning series circuit ground connection, the tertiary voltage Transient Suppression Diode TVS3 are connected in parallel on the 3rd thunder-lightning series circuit
Outlet side.
4. a kind of airborne DC source according to claim 1, it is characterised in that power supply EMI filter circuit (120)
Including the EMI resistance Rn1 for anti-voltage surge, for carrying out the 2nd EMI resistance R1 of current limliting to circuit, for electricity
Road carry out overcurrent protection self- recoverage insurance F1, for circuit is filtered first, second, third and fourth EMI electric capacity (C1, C2,
C3, C4) and chip inductor T1.
5. a kind of airborne DC source according to claim 4, it is characterised in that the EMI resistance Rn1 series connection connects
Connect positive pole in circuit；The insurance is connected in series in EMI resistance Rn1 and the 2nd EMI resistance R1
Between；The EMI series circuits that the first EMI electric capacity C1 and the 2nd EMI electric capacity C2 is constituted are grounded, an EMI
The input side of series circuit is connected in parallel with the 2nd EMI resistance R1, the 3rd EMI electric capacity C3 and the 4th EMI electricity
The 2nd EMI series circuits for holding C4 compositions are parallel in the power supply EMI filter circuit 120, and the chip inductor T1 series connection connects
It is connected on the centre of EMI series circuits and the 2nd EMI series circuits.
6. a kind of airborne DC source according to claim 1, it is characterised in that the voltage protector circuit 130 is wrapped
Anti-reverse diode D1 is included, voltage clamp diode D2, Zener diode D5, for the constant-current source electricity that powers to Zener diode
Road 131, for the adjustment circuit 132 of adjustment circuit voltage, sampling resistor R5, first and second filtering capacitance of voltage regulation (C7, C8),
First, two output impedance build-out resistors (R6, R7) and first and second suppression inductance (L1, L2) for suppressing high-frequency harmonic.
7. a kind of airborne DC source according to claim 6, it is characterised in that the anti-reverse diode D1 series connection connects
The positive pole of the voltage protector circuit 130 is connected on, the voltage clamp diode D2 is connected in parallel on the anti-reverse diode D1
Outlet side；The constant-current source circuit 131 is connected in parallel on the outlet side of the voltage clamp diode D2, the Zener diode D5
One end be connected with the constant-current source circuit 131, the other end is connected with the negative pole of the voltage protector circuit 130；The tune
The input of whole circuit 132 is connected with the constant-current source circuit 131, outfan is connected in series using resistance R5 with described；Described
The filtering series circuit (not shown) that first and second filtering capacitance of voltage regulation (C7, C8) is constituted is parallel to the defeated of sampling resistor R5
Go out side；The coupling series circuit that first and second output impedance build-out resistor (R6, the R7) is constituted is connected in parallel on filtering series circuit
Outlet side；The outlet side of match circuit suppresses inductance (L1, L2) connection respectively at described first and second.
8. a kind of airborne DC source according to claim 6, it is characterised in that the adjustment circuit includes first and second
Adjustment audion (Q2, Q3) and first and second adjustment diode (D6, D7)；Described first adjustment audion Q2 colelctor electrode with
The base stage connection of the second adjustment audion Q3, the base stage of the first adjustment audion Q2 and the described first adjustment diode
The input connection of D6, the outfan of the first adjustment diode D6 are connected with the input of the described second adjustment diode D7
Connect, the outfan of the second adjustment diode D7 is connected with current sampling resistor R5 outfans.
9. a kind of airborne DC source according to claim 1, it is characterised in that the first and second anti-transient state is interrupted straight
Stream regulated power supply (140,150) include regulated power supply anti-reverse diode (D402, D403), the height that reverse connecting protection is carried out to circuit
Frequency filter capacitor (C402, C403), the storage capacitor (C430, C431) is powered by circuit, the adjustable voltage stabilizing of output voltage
Chip (U402, U403), power supply chip soft start capacitor (C411, C412) and first and second output circuit (141, D151).
10. a kind of airborne DC source according to claim 9, it is characterised in that anti-reverse two pole of the regulated power supply
Pipe (D402, D403) is connected in series in the positive pole of circuit, and high-frequency filter capacitor (C402, the C403) is connected in parallel on the voltage stabilizing electricity
The outlet side in the anti-reverse diode in source (D402, D403), storage capacitor (C430, the C431) are connected in the high frequency filter in parallel
The outlet side of ripple electric capacity (C402, C403), the outlet side of storage capacitor (C430, the C431) and the voltage stabilizing chip (U402,
U403) connect；The outlet side of voltage stabilizing chip (U402, the U403) is connected with output circuit；The soft start capacitor (C411,
C412) connect with the positive pole of the voltage stabilizing chip (U402, U403) and circuit respectively.
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| CN201610911183.1A CN106505842B (en) | 2016-10-19 | 2016-10-19 | Airborne DC power supply |
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|---|---|---|---|
| CN201610911183.1A CN106505842B (en) | 2016-10-19 | 2016-10-19 | Airborne DC power supply |
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| CN106505842B CN106505842B (en) | 2019-09-10 |
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| CN108169548A (en) * | 2018-01-29 | 2018-06-15 | 西安神电电器有限公司 | A kind of arrester on-Line Monitor Device |
| 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 |
| CN110912387A (en) * | 2019-11-13 | 2020-03-24 | 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 |
| CN112242825A (en) * | 2020-10-19 | 2021-01-19 | 天津津航计算技术研究所 | Filtering protection circuit based on serial interface chip |
| 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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