CN205017005U - Direct current antisurge system - Google Patents
Direct current antisurge system Download PDFInfo
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- CN205017005U CN205017005U CN201520807556.1U CN201520807556U CN205017005U CN 205017005 U CN205017005 U CN 205017005U CN 201520807556 U CN201520807556 U CN 201520807556U CN 205017005 U CN205017005 U CN 205017005U
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Abstract
The utility model relates to an electric power system especially relates to a direct current antisurge system. A direct current antisurge system, is applied to the antisurge in -process of alignment with inter -item transfer electric installation, and direct current antisurge system includes: input and output are respectively with the mains voltage input and output, the peak restraines the module, is connected with the input, absorbs input voltage's spike voltage's energy, the excessive pressure restraines the module, is connected with peak suppression module, output, exports input voltage through the output behind the suppression excessive pressure surge, prevent falling the circuit, be connected the resistant under -voltage surge of compensation respectively with excessive pressure suppression module, output to make the direct current consumer normally work under the spike voltage that sets for and the surge voltage condition, the heating control circuit restraines the module with the excessive pressure and is connected, including a control end to reach the heating control circuit and pass through a control end receipt control signal, in order to control the heating of a power to the heating device.
Description
Technical field
The utility model relates to electric power system, particularly relates to a kind of direct current antisurge system.
Background technology
Direct current supply on air equipment has two kinds of sources, and one is that aero-engine drives DC generator to power, and two is storage battery stand-by power supplies.The direct current supply produced due to aeroplane engine machine driving generator is very unstable, and the power supply of generation is easy to occur overpressure situation; Aircraft as run into thunderbolt, to produce very high peak voltage in high-altitude flight due to induction; When needing when generator failure to be promptly switched to storage battery stand-by power supply, there will be again of short duration step-down.In GJB181-86 " aircraft electrical supply parameters and the requirement to power consumption equipment ", 2.4.4 item defines the resistance to transient voltage requirement to airborne direct-flow electricity utilization apparatus, mainly containing following 3: 1st " resistance to peak voltage " for 2.4.4.1 regulation, is the pulse voltage of 600V/10us; 2nd is regulation a article " resistance to overvoltage surge " of the proof voltage surge of 2.4.4.2, is 80V/50ms; 3rd is regulation b article " resistance to under-voltage surge " of the proof voltage surge of 2.4.4.2, is the power down of 8V/50ms.
But direct-flow electricity utilization apparatus common at present generally uses on ground, and the environment for use on ground is secure.The supply district that general direct current of ground power supply unit requires is at DC18 ~ 36V, and the maximum 50V of resistance to overvoltage surge, so the ability not having resistance to under-voltage and resistance to spike, can not adapt to exceedingly odious environment.
Utility model content
For the adaptability problem faced that power supply general in prior art uses aboard, the utility model provides a kind of direct current antisurge system, solves the adaptability problem faced that general power supply uses aboard, strictly controls cost.
The utility model adopts following technical scheme:
A kind of direct current antisurge system, be applied in the antisurge process to direct-flow electricity utilization apparatus, described direct current antisurge system comprises:
Input and output, respectively by supply voltage input and output;
Peak restrained module, is connected with described input, absorbs the energy of the peak voltage of input voltage;
Over-voltage suppression module, is connected with described peak restrained module, output, is exported by described input voltage after suppressing overvoltage surge by described output;
Power down preventing circuit, is connected with described over-voltage suppression module, described output respectively, compensates resistance to under-voltage surge, normally works under the peak voltage and surge voltage situation of setting to make described direct-flow electricity utilization apparatus;
Heating control circuit, with described over-voltage suppression model calling, comprises a control end, and
Described heating control circuit receives a control signal by described control end, to control the heating of power supply described in heater element.
Preferably, described peak restrained module comprises:
At least one magnetic bead, is connected with described input respectively, the waveform of mild described peak voltage;
Diode, is connected with described magnetic bead, by described peak voltage clamper to preset value;
Resistance, connects with described magnetic bead with after described diodes in parallel again, consumes the capacity that described diode parasitic capacitance and filter capacitor store.
Preferably, described peak restrained module absorbs 600V/10us pulse voltage.
Preferably, described diode by described peak voltage clamper to 85V.
Preferably, described over-voltage suppression module suppresses the overvoltage surge of 80V/50ms.
Preferably, described overvoltage suppression circuit comprises:
At least one metal-oxide-semiconductor, wherein, a negative-feedback circuit controls the electric current of described metal-oxide-semiconductor P raceway groove, to carry out linear voltage decreasing.
Preferably, described metal-oxide-semiconductor is integrated on an aluminum base PCB plate.
Preferably, described power down preventing circuit comprises:
Storage capacitor, for storage of electrical energy;
Booster circuit, is connected with described storage capacitor, charges to described storage capacitor, reduces the capacity requirement of described storage capacitor simultaneously.
Preferably, the capacity formula of described storage capacitor C is:
Wherein, U
1for under-voltage front normal power supply voltage; U
2for the minimum operating voltage of described power supply; P
0for described direct-flow electricity utilization apparatus actual power loss; η is described power-efficient; T is the described line under-voltage time.
Preferably, described heating control circuit comprises:
Triode, base stage is connected with described control end, and
Described control signal controls conducting and the cut-off of described triode.
Preferably, described power supply and described control signal carry out electrical isolation by optocoupler.
The beneficial effects of the utility model are:
600V/10us pulse voltage is absorbed by peak restrained module, the overvoltage surge of 80V/50ms is solved by overvoltage suppression circuit, the resistance to under-voltage surge of 8V/50ms is solved by power down preventing circuit, also can normally work, without the need to changing the existing power supply of equipment in the peak voltage that conventional DC power consumption equipment is specified at GJB181-86 and surge voltage situation.
Meanwhile, system of the present utility model is charged to storage capacitor by booster circuit, compared with directly charging, improves the utilance of electric capacity, can reduce the capacity requirement to storage capacitor, cost-saving and space; Be integrated with computer heating control function, without the need to expanding heating module in addition.The utility model is easy to implement, compact conformation, reliability are high, highly versatile, and cost is lower, has fine economic benefit and promotional value.
Accompanying drawing explanation
Fig. 1 is circuit connection diagram of the present utility model;
Fig. 2 is the circuit connection diagram of the utility model peak restrained circuit;
Fig. 3 is the connection diagram of overvoltage suppression circuit in the utility model.
Embodiment
It should be noted that, when not conflicting, following technical proposals, can combine between technical characteristic mutually.
Below in conjunction with accompanying drawing, embodiment of the present utility model is further described:
Unstable in order to overcome existing aviation DC power supply, easily cause equipment cannot normally to work the technical problem even damaged, the present embodiment provides a kind of direct current antisurge system that can be equipment stable power-supplying.
Embodiment one
Fig. 1 is circuit connection diagram of the present utility model, as shown in Figure 1, the present embodiment provides a kind of direct current antisurge system, is applied in the antisurge process to direct-flow electricity utilization apparatus, this direct current antisurge system comprises: input and output, respectively by supply voltage input and output;
Surge suppression modules, comprises peak restrained module and over-voltage suppression module, wherein
Peak restrained module, is connected with input, absorbs the energy of the peak voltage of input voltage;
Over-voltage suppression module, is connected with peak restrained module, output, is exported by input voltage after suppressing overvoltage surge by output;
This direct current antisurge system also comprises:
Power down preventing circuit, is connected with over-voltage suppression module, output respectively, compensates resistance to under-voltage surge, normally works under the peak voltage and surge voltage situation of setting to make direct-flow electricity utilization apparatus;
Heating control circuit, with over-voltage suppression model calling, comprises a control end, and
Heating control circuit receives a control signal by control end, to control the heating of a power supply to heater element.
Fig. 2 is the circuit connection diagram of the utility model peak restrained circuit, as shown in Figure 2, in the present embodiment, peak restrained module can comprise peak restrained circuit, peak restrained circuit is responsible for absorbing 600V/10us pulse voltage, mainly through magnetic bead, diode and resistance absorb the energy of peak voltage, four magnetic beads (L1-L4) wherein in peak restrained circuit, be connected with the input of power supply after in parallel between four magnetic beads, magnetic bead is mainly used to the waveform of mild spike, and number needs is selected according to the electric current flow through.Magnetic bead simultaneously in parallel is also connected with a diode D1, this diode D1 is in parallel with a resistance R1, this diode can be Transient Suppression Diode, and in addition, the resistance in peak restrained circuit is mainly used to the energy consuming diode parasitic capacitance and filter capacitor storage.
Wherein, the TVS pipe 5KP85A of 5000W selected by diode, works, by spike clamper to about 85V in the peak voltage test of 600V/10us.In the test of 600V/10us peak voltage, this TVS pipe by transient peak electric current can reach 6A/10us, the internal resistance of 600V/10us peak voltage is 50 Ω ± 5 Ω, known by calculating, the electric current flowing through D1 is to the maximum (600 – 85)/45 ≈ 11.4A, meet the demands completely.TVS pipe selects 85V, is because if lower than 80V clamper, and because the overvoltage surge time is long in the overvoltage surge test of 80V/50ms, the energy of releasing after TVS pipe punctures is larger, and excessive heat just may cause TVS pipe damaged.
Over-voltage suppression module can comprise overvoltage suppression circuit, Fig. 3 is the connection diagram of overvoltage suppression circuit in the utility model, as shown in Figure 3, overvoltage suppression circuit comprises high-power Transient Suppression Diode, by multiple triode, metal-oxide-semiconductor, the linear voltage-stabilizing circuit of electric capacity and resistance composition, after terminal voltage after transistor Q3 exceedes negative-feedback circuit voltage stabilizing value (safe voltage), electric current is had to pass through, transistor Q2 is switched on enters amplification region, the current potential of transistor Q1 base stage declines, the collector and emitter voltage difference of transistor Q1 reduces, namely the GS pressure reduction of transistor Q3 is reduced, transistor Q2 enters magnifying state by saturation conduction state, exceed the drop of pressure of safe voltage between the source electrode and drain electrode of metal-oxide-semiconductor Q2, achieve the suppression to overvoltage.Transistor Q3 in this overvoltage suppression circuit can select SQD040P10-40L, and negative feedback network can select device or simplified design according to actual requirement.
The utility model preferred embodiment, overvoltage suppression circuit adopts aluminum base PCB plate, and the size of this pcb board can be 51mm × 51mm.
In the present embodiment, power down preventing circuit comprises booster circuit and storage capacitor, and boost switching circuit charges to electric capacity, and its Primary Component is storage capacitor, when carrying out under-voltage surge test according to the capacity of formulae discovery storage capacitor C below:
Wherein: U
1for under-voltage front normal power supply voltage, generally get 28.5V;
U
2for the minimum operating voltage of DC/DC power module, generally get 18V;
P
0for equipment actual power loss;
η is power-efficient;
T is the line under-voltage time, and value is 50ms;
C is the capacitance needed.
But if adopt jumbo electric capacity to have more defect in the present embodiment, one is that volume is excessive, and two is that price is higher.As can be seen from above-mentioned formula, improve the charging voltage of electric capacity, can effectively reduce capacitance requirement.For this reason, in the system of the present embodiment, adopt the booster circuit of LT3518 integrated chip, to capacitor charging after boosting, be generally designed into the maximum input voltage a little less than power module, significantly reduce storage capacitor capacity requirement.As Fig. 3, diode D4 is mainly used to prevent storage capacitor back discharge.
Heating control circuit one end is connected with surge restraint circuit, a termination external control signal, the heater element of a termination outside, and can be heating film, heating glass etc., heating control circuit adopts general metal-oxide-semiconductor when switch.Parameter need be selected according to the power consumption of heater element.For preventing heating power supply may to the interference of control signal, heating control circuit adopts optocoupler that control signal and heating power supply are carried out electrical isolation.
In sum, the utility model absorbs 600V/10us pulse voltage by peak restrained module, the overvoltage surge of 80V/50ms is solved by overvoltage suppression circuit, the resistance to under-voltage surge of 8V/50ms is solved by power down preventing circuit, also can normally work, without the need to changing the existing power supply of equipment in the peak voltage that conventional DC power consumption equipment is specified at GJB181-86 and surge voltage situation.
Meanwhile, system of the present utility model is charged to storage capacitor by booster circuit, compared with directly charging, improves the utilance of electric capacity, can reduce the capacity requirement to storage capacitor, cost-saving and space; Be integrated with computer heating control function, without the need to expanding heating module in addition.The utility model is easy to implement, compact conformation, reliability are high, highly versatile, and cost is lower, has fine economic benefit and promotional value.
By illustrating and accompanying drawing, giving the exemplary embodiments of the ad hoc structure of embodiment, based on the utility model spirit, also can do other conversion.Although above-mentioned utility model proposes existing preferred embodiment, but these contents are not as limitation.
For a person skilled in the art, after reading above-mentioned explanation, various changes and modifications undoubtedly will be apparent.
Claims (10)
1. a direct current antisurge system, is characterized in that, is applied in the antisurge process to direct-flow electricity utilization apparatus, and described direct current antisurge system comprises:
Input and output, respectively by supply voltage input and output;
Peak restrained module, is connected with described input, absorbs the energy of the peak voltage of input voltage;
Over-voltage suppression module, is connected with described peak restrained module, output, is exported by described input voltage after suppressing overvoltage surge by described output;
Power down preventing circuit, is connected with described over-voltage suppression module, described output respectively, compensates resistance to under-voltage surge, normally works under the peak voltage and surge voltage situation of setting to make described direct-flow electricity utilization apparatus;
Heating control circuit, with described over-voltage suppression model calling, comprises a control end, and
Described heating control circuit receives a control signal by described control end, to control the heating of power supply described in heater element.
2. direct current antisurge system according to claim 1, is characterized in that, described peak restrained module comprises:
At least one magnetic bead, is connected with described input respectively, the waveform of mild described peak voltage;
Diode, is connected with described magnetic bead, by described peak voltage clamper to preset value;
Resistance, connects with described magnetic bead with after described diodes in parallel again, consumes the capacity that described diode parasitic capacitance and filter capacitor store.
3. direct current antisurge system according to claim 1, is characterized in that, described peak restrained module absorbs 600V/10us pulse voltage.
4. direct current antisurge system according to claim 2, is characterized in that, described diode by described peak voltage clamper to 85V.
5. direct current antisurge system according to claim 1, is characterized in that, described over-voltage suppression module suppresses the overvoltage surge of 80V/50ms.
6. direct current antisurge system according to claim 1, it is characterized in that, described overvoltage suppression circuit comprises:
At least one metal-oxide-semiconductor, wherein, a negative-feedback circuit controls the electric current of described metal-oxide-semiconductor P raceway groove, to carry out linear voltage decreasing.
7. direct current antisurge system according to claim 1, is characterized in that, described metal-oxide-semiconductor is integrated on an aluminum base PCB plate.
8. direct current antisurge system according to claim 1, it is characterized in that, described power down preventing circuit comprises:
Storage capacitor, for storage of electrical energy;
Booster circuit, is connected with described storage capacitor, charges to described storage capacitor, reduces the capacity requirement of described storage capacitor simultaneously.
9. direct current antisurge system according to claim 8, is characterized in that, the capacity formula of described storage capacitor C is:
Wherein, U
1for under-voltage front normal power supply voltage; U
2for the minimum operating voltage of described power supply; P
0for described direct-flow electricity utilization apparatus actual power loss; η is described power-efficient; T is the described line under-voltage time.
10. direct current antisurge system according to claim 1, it is characterized in that, described heating control circuit comprises:
Triode, base stage is connected with described control end, and
Described control signal controls conducting and the cut-off of described triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520807556.1U CN205017005U (en) | 2015-10-16 | 2015-10-16 | Direct current antisurge system |
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|---|---|---|---|
| CN201520807556.1U CN205017005U (en) | 2015-10-16 | 2015-10-16 | Direct current antisurge system |
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| CN205017005U true CN205017005U (en) | 2016-02-03 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106981978A (en) * | 2017-04-12 | 2017-07-25 | 山东超越数控电子有限公司 | A kind of circuit structure of suppression DC DC isolation module power supply inrush currents |
| CN109802376A (en) * | 2019-03-26 | 2019-05-24 | 西安霍威电源有限公司 | A kind of overvoltage/undervoltage surge restraint circuit |
| CN110850953A (en) * | 2019-11-14 | 2020-02-28 | 中国航空工业集团公司西安航空计算技术研究所 | Overvoltage-resistant surge circuit |
| CN111106599A (en) * | 2020-01-10 | 2020-05-05 | 湖南中普技术股份有限公司 | Method for suppressing direct current surge of airborne electric equipment based on ideal diode |
| CN111641199A (en) * | 2020-05-07 | 2020-09-08 | 中国科学院声学研究所 | Overvoltage protection device and method applied to submarine observation network connection box |
| CN112202155A (en) * | 2020-10-19 | 2021-01-08 | 天津津航计算技术研究所 | Input voltage surge suppression circuit |
-
2015
- 2015-10-16 CN CN201520807556.1U patent/CN205017005U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106981978A (en) * | 2017-04-12 | 2017-07-25 | 山东超越数控电子有限公司 | A kind of circuit structure of suppression DC DC isolation module power supply inrush currents |
| CN109802376A (en) * | 2019-03-26 | 2019-05-24 | 西安霍威电源有限公司 | A kind of overvoltage/undervoltage surge restraint circuit |
| CN110850953A (en) * | 2019-11-14 | 2020-02-28 | 中国航空工业集团公司西安航空计算技术研究所 | Overvoltage-resistant surge circuit |
| CN111106599A (en) * | 2020-01-10 | 2020-05-05 | 湖南中普技术股份有限公司 | Method for suppressing direct current surge of airborne electric equipment based on ideal diode |
| CN111641199A (en) * | 2020-05-07 | 2020-09-08 | 中国科学院声学研究所 | Overvoltage protection device and method applied to submarine observation network connection box |
| CN111641199B (en) * | 2020-05-07 | 2021-12-28 | 中国科学院声学研究所 | Overvoltage protection device and method applied to submarine observation network connection box |
| CN112202155A (en) * | 2020-10-19 | 2021-01-08 | 天津津航计算技术研究所 | Input voltage surge suppression circuit |
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| GR01 | Patent grant |