CN205051350U - A filter circuit for aviation dc generator - Google Patents
A filter circuit for aviation dc generator Download PDFInfo
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- CN205051350U CN205051350U CN201520793738.8U CN201520793738U CN205051350U CN 205051350 U CN205051350 U CN 205051350U CN 201520793738 U CN201520793738 U CN 201520793738U CN 205051350 U CN205051350 U CN 205051350U
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Abstract
The utility model belongs to dc generator exports filtering technique, relates to the improvement to aviation dc generator filter circuit. It includes a first mica electric capacity C3, its characterized in that: have one the 3rd electrolytic capacitor C5 and a transient voltage to suppress diode D, filter circuit's output terminal OUT and filter circuit's input terminal IN are connected. The utility model provides a modified a filter circuit for aviation dc generator, electrical power generating system's transient performance when having improved the load sudden change has greatly satisfied the mark GJB181A -2003's of state army requirement.
Description
Technical field
The utility model belongs to DC generator output filtering technology, relates to the improvement to aviation DC generator filter circuit.
Background technology
Transient state voltage adjustment characteristic is the important indicator of power-supply system power supply quality.National military standard GJB181A-2003 requires when working properly, the output voltage of aviation DC generator shock load and prominent unload load two kinds of situations under, the transient state of power-supply system and steady state voltage should remain on: be greater than 18V during shock load, dash forward when unloading load and are less than 50V; Recovery time is: be less than 100ms during shock load, is prominently less than 82.5ms when unloading load.The filter circuit of tradition aviation DC generator is see Fig. 1, and it is made up of the first electrochemical capacitor C1, the second electrochemical capacitor C2, the first mica capacitor C3, the second mica capacitor C4 and inductance L.The positive pole of the first electrochemical capacitor C1 is connected with the input terminal IN of filter circuit, the minus earth of the first electrochemical capacitor C1; One end of first mica capacitor C3 is connected with the input terminal IN of filter circuit, the other end ground connection of the first mica capacitor C3; The positive pole of the second electrochemical capacitor C2 is connected with the lead-out terminal OUT of filter circuit, the minus earth of the second electrochemical capacitor C2; One end of second mica capacitor C4 is connected with the lead-out terminal OUT of filter circuit, the other end ground connection of the second mica capacitor C4.One end of inductance L is connected with the input terminal IN of filter circuit, and the other end of inductance L is connected with the lead-out terminal OUT of filter circuit.The capacitance of the first electrochemical capacitor C1 and the second electrochemical capacitor C2 is 1000 μ F.The shortcoming of this filter circuit is: only have filter function, when can not meet load changing, and the maximum output voltage of aviation DC generator and the requirement of minimum output voltage.
Summary of the invention
The purpose of this utility model is: the filter circuit for aviation DC generator proposing a kind of improvement, so that the mapping of power-supply system when improving load changing, meets the requirement of national military standard GJB181A-2003.
The technical solution of the utility model is: a kind of filter circuit for DC generator, and comprise a first mica capacitor C3, one end of the first mica capacitor C3 is connected with the input terminal IN of filter circuit, the other end ground connection of the first mica capacitor C3; It is characterized in that: have a 3rd electrochemical capacitor C5 and transient voltage suppressor diode D, the positive pole of the 3rd electrochemical capacitor C5 is connected with the input terminal IN of filter circuit, the minus earth of the 3rd electrochemical capacitor C5; The negative pole of transient voltage suppressor diode D is connected with the input terminal IN of filter circuit, the plus earth of transient voltage suppressor diode D; The lead-out terminal OUT of filter circuit is connected with the input terminal IN of filter circuit.
The utility model has the advantages that: the filter circuit for aviation DC generator proposing a kind of improvement, substantially improves the mapping of power-supply system during load changing, meets the requirement of national military standard GJB181A-2003.
Accompanying drawing explanation
Fig. 1 is the filter circuit of traditional aviation DC generator.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Below the utility model is described in further details.See Fig. 2, a kind of filter circuit for DC generator, comprise a first mica capacitor C3, one end of the first mica capacitor C3 is connected with the input terminal IN of filter circuit, the other end ground connection of the first mica capacitor C3; It is characterized in that: have a 3rd electrochemical capacitor C5 and transient voltage suppressor diode D, the positive pole of the 3rd electrochemical capacitor C5 is connected with the input terminal IN of filter circuit, the minus earth of the 3rd electrochemical capacitor C5; The negative pole of transient voltage suppressor diode D is connected with the input terminal IN of filter circuit, the plus earth of transient voltage suppressor diode D; The lead-out terminal OUT of filter circuit is connected with the input terminal IN of filter circuit.
The capacitance of the first mica capacitor C3 is 2000pF ~ 2500pF, and the capacitance of the 3rd electrochemical capacitor C5 is 23000 μ F ~ 27000 μ F.The model of transient voltage suppressor diode D is: 15KP36A or 15KP30A.
Operation principle of the present utility model is: owing to eliminating inductance, increase electric capacity and adding transient voltage suppressor diode (TVS), make Novel Filter can improve DC power system transient state voltage adjustment characteristic, thus improve the power supply quality of DC power system.Because the inner winding of DC generator just comprises inductance, cancel the power supply quality index such as pulsating voltage, transient voltage that inductance does not affect power-supply system in filter, and be conducive to alleviating filter weight.Due to the energy storage effect of electric capacity, increase the problem of transient voltage too low (being not less than 18V) when electric capacity effectively can solve shock load.Increase transient voltage suppressor diode (be called for short TVS) be for solve prominent unload load time transient voltage too high (not higher than 50V) problem, when TVS bears a high-octane instantaneous overvoltage pulse under the applied in reverse condition specified, once overvoltage pulse more than TVS puncture voltage, its working impedance can be down to very low conduction value immediately, allow big current (can reach hundreds of peace) by and by rapid for TVS both end voltage strangulation to rated value.TVS model newly-increased in Novel Filter is 15KP30A, and its power is 15000W, and puncture voltage is 37.8V, and clamping voltage is 49.9V.After installing TVS additional, result of the test show prominent unload load time, the output voltage of transition can be clamped at below 49.9V by TVS, can meet the requirement (not higher than 50V) of GJB181A-2003.
The capacitance of embodiment 1: the first mica capacitor C3 is 2200pF, and the capacitance of the 3rd electrochemical capacitor C5 is the model of 25000 μ F, transient voltage suppressor diode D is 15KP36A.
The capacitance of embodiment 2: the first mica capacitor C3 is 2200pF, and the capacitance of the 3rd electrochemical capacitor C5 is the model of 26000 μ F, transient voltage suppressor diode D is 15KP30A.
The capacitance of embodiment 3: the first mica capacitor C3 is 2000pF, and the capacitance of the 3rd electrochemical capacitor C5 is the model of 25000 μ F, transient voltage suppressor diode D is 15KP30A.
In embodiment 1, during shock load, output voltage minimum voltage is at more than 18V; Prominent when unloading load, output voltage ceiling voltage is at more than 50V.The requirement of national military standard GJB181A-2003 can be met.
Claims (2)
1., for a filter circuit for DC generator, comprise a first mica capacitor C3, one end of the first mica capacitor C3 is connected with the input terminal IN of filter circuit, the other end ground connection of the first mica capacitor C3; It is characterized in that: have a 3rd electrochemical capacitor C5 and transient voltage suppressor diode D, the positive pole of the 3rd electrochemical capacitor C5 is connected with the input terminal IN of filter circuit, the minus earth of the 3rd electrochemical capacitor C5; The negative pole of transient voltage suppressor diode D is connected with the input terminal IN of filter circuit, the plus earth of transient voltage suppressor diode D; The lead-out terminal OUT of filter circuit is connected with the input terminal IN of filter circuit.
2. the filter circuit for DC generator according to claim 1, is characterized in that: the capacitance of the first mica capacitor C3 is 2000pF ~ 2500pF, and the capacitance of the 3rd electrochemical capacitor C5 is 23000 μ F ~ 27000 μ F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520793738.8U CN205051350U (en) | 2015-10-14 | 2015-10-14 | A filter circuit for aviation dc generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520793738.8U CN205051350U (en) | 2015-10-14 | 2015-10-14 | A filter circuit for aviation dc generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205051350U true CN205051350U (en) | 2016-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520793738.8U Active CN205051350U (en) | 2015-10-14 | 2015-10-14 | A filter circuit for aviation dc generator |
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| CN (1) | CN205051350U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023516A (en) * | 2017-11-16 | 2018-05-11 | 陕西航空电气有限责任公司 | A kind of method for improving brushed DC starter-generator voltage transient characteristic |
| CN114257079A (en) * | 2021-12-23 | 2022-03-29 | 无锡睿勤科技有限公司 | Power utilization equipment and power supply system |
-
2015
- 2015-10-14 CN CN201520793738.8U patent/CN205051350U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023516A (en) * | 2017-11-16 | 2018-05-11 | 陕西航空电气有限责任公司 | A kind of method for improving brushed DC starter-generator voltage transient characteristic |
| CN108023516B (en) * | 2017-11-16 | 2020-05-19 | 陕西航空电气有限责任公司 | Method for improving voltage transient characteristic of brushed direct-current starting generator |
| CN114257079A (en) * | 2021-12-23 | 2022-03-29 | 无锡睿勤科技有限公司 | Power utilization equipment and power supply system |
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