Satellite vapour image parallel regulator current limliting power-supplying circuit
Technical field
The present invention relates to satellite power supply technical fields, more particularly to a kind of Satellite vapour image parallel regulator current limliting
Power-supplying circuit.
Background technique
Solar battery array shunt regulating control circuit is the important composition portion of high-power spatial overlay power-supply controller of electric
Point, realize satellite system energy resource supply.
Single gust of supply current of satellite power system solar battery array is mostly 2 amperes~4 amperes now, to make full use of the sun
Cell array fan-out capability meets the needs of high rail high-power satellite power system.Realize the shunting to high current solar battery array
Adjustment control method research is of great significance.At the same time, the problems such as solving heavy current impact is needed, it is in-orbit at present to fly
Row square matrix electric current is up to 7 amperes.
A kind of Satellite vapour image parallel regulator current limliting method for controlling power supply in the present invention is realized to high power satellite
The control of system sun square matrix, while solving the problems, such as the inhibition of high current transient state.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of Satellite vapour image parallel regulator current limliting power supply control
Circuit.The Satellite vapour image parallel regulator current limliting power-supplying circuit is suitable for highly reliable high rail platform military satellite,
Compared with prior art, have controllable solar battery array output electric current big, the characteristics of high reliablity.
The technical scheme adopted by the present invention to solve the technical problems existing in the known art is that
A kind of Satellite vapour image parallel regulator current limliting power-supplying circuit, includes at least:
The inductance L1 being set at square matrix power supply positive terminal;
The sampling resistor R1 being set at square matrix power cathode terminal;
Metal-oxide-semiconductor Q1;
And the control circuit of control metal-oxide-semiconductor Q1 working condition;Wherein:
One end of the inductance L1 is electrically connected with square matrix power supply positive terminal;The other end and metal-oxide-semiconductor Q1 of the inductance L1
Source electrode electrical connection;The drain electrode of the metal-oxide-semiconductor Q1 is electrically connected by sampling resistor R1 with square matrix power cathode terminal;The control
Circuit includes an a main error amplification signal terminal MEA and reference signal terminal Verf;The output end of the control circuit
Son is electrically connected with the grid of metal-oxide-semiconductor Q1;The source electrode of the metal-oxide-semiconductor Q1 is connect by isolating diode circuit with bus BUS+;Institute
The drain electrode for stating metal-oxide-semiconductor Q1 is connect by sampling resistor R1 with bus BUS-.
Further, the control circuit includes triode to pipe Q4 and driving NPN pipe U4;The triode is to pipe Q4 by
One NPN type triode and the second NPN type triode composition;The base stage of above-mentioned first NPN type triode and the second NPN type triode
It is shorted;The collector of above-mentioned first NPN type triode is connect by resistance R27 with power supply terminal VCC;Above-mentioned second NPN type three
The collector of pole pipe is connect by resistance R28 with power supply terminal VCC;The collector and driving NPN of second NPN type triode
The base stage of pipe U4 is electrically connected;The collector of above-mentioned driving NPN pipe U4 is connect with the base stage of metal-oxide-semiconductor Q1;The power supply terminal VCC with
It is connected between the base stage of metal-oxide-semiconductor Q1 by resistance R29;The emitter of above-mentioned first NPN type triode passes through resistance R37 and driving
The emitter of NPN pipe U4 is electrically connected;The emitter of second NPN type triode is connect with one end of sampling resistor R1;It is described
The emitter of first NPN type triode is connect by resistance R37 with the other end of sampling resistor R1;In the parallel connection of the both ends resistance R37
There is resistance R38.
Further, the isolating diode circuit includes main isolation circuit and secondary isolation circuit;The main isolation circuit and
Secondary isolation circuit is made of two diodes in parallel respectively.
The advantages and positive effects of the present invention are:
1, the present invention realizes the high-power satellite power system solar battery array shunt regulating circuit control of high rail, adjusts electricity
Road adjustable extent is wide.
2, the present invention inhibits inductive technologies using succinct efficiently transient state, is designed by appropriate inductive circuit and realizes high current wink
State suppression circuit is particularly suitable for high rail illumination operating mode compared with multi-satellite system, improves system reliability.
Detailed description of the invention:
Fig. 1 is the circuit diagram of the preferred embodiment of the present invention;
Fig. 2 is the partial circuit diagram of the preferred embodiment of the present invention, is mainly used for the physical circuit of display control circuit.
Specific embodiment
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and cooperate attached drawing
Detailed description are as follows:
Please refer to Fig. 1 and Fig. 2, a kind of Satellite vapour image parallel regulator current limliting power-supplying circuit, comprising:
The inductance L1 being set at square matrix power supply positive terminal;
The sampling resistor R1 being set at square matrix power cathode terminal;
Metal-oxide-semiconductor Q1;
And the control circuit of control metal-oxide-semiconductor Q1 working condition;Wherein:
One end of the inductance L1 is electrically connected with square matrix power supply positive terminal;The other end and metal-oxide-semiconductor Q1 of the inductance L1
Source electrode electrical connection;The drain electrode of the metal-oxide-semiconductor Q1 is electrically connected by sampling resistor R1 with square matrix power cathode terminal;The control
Circuit includes an a main error amplification signal terminal MEA and reference signal terminal Verf;The output end of the control circuit
Son is electrically connected with the grid of metal-oxide-semiconductor Q1;The source electrode of the metal-oxide-semiconductor Q1 is connect by isolating diode circuit with bus BUS+;Institute
The drain electrode for stating metal-oxide-semiconductor Q1 is connect by sampling resistor R1 with bus BUS-.
The control circuit includes triode to pipe Q4 and driving NPN pipe U4;The triode is to pipe Q4 by the first NPN type
Triode and the second NPN type triode composition;The base stage of above-mentioned first NPN type triode and the second NPN type triode is shorted;On
The collector for stating the first NPN type triode is connect by resistance R27 with power supply terminal VCC;The collection of above-mentioned second NPN type triode
Electrode is connect by resistance R28 with power supply terminal VCC;The collector of second NPN type triode and the base of driving NPN pipe U4
Pole electrical connection;The collector of above-mentioned driving NPN pipe U4 is connect with the base stage of metal-oxide-semiconductor Q1;The power supply terminal VCC and metal-oxide-semiconductor Q1
Base stage between connected by resistance R29;The emitter of above-mentioned first NPN type triode passes through resistance R37 and driving NPN pipe U4
Emitter electrical connection;The emitter of second NPN type triode is connect with one end of sampling resistor R1;First NPN
The emitter of type triode is connect by resistance R37 with the other end of sampling resistor R1;Resistance is parallel at the both ends resistance R37
R38。
The isolating diode circuit includes main isolation circuit and secondary isolation circuit;The main isolation circuit and secondary isolation electricity
Road is made of two diodes in parallel respectively.
Above preferred embodiment divides battle array to export high current feature for the high-power satellite power system solar cell of high rail, adopts
With sequence switch shunt regulating circuit topology, frontal regulation technology etc. is low compared to power loss therewith for the circuit topology, bus
Degree of regulation is high, and circuit is more reliable.
Since sun square matrix electric current is larger, high power solar cell junction capacity is larger, so that metal-oxide-semiconductor opens immediate current point
Peak is larger, leads to square matrix output failure if not being controlled and can damage even breakdown power pipe.This circuit is using conducting circuit
Series inductance and high-precision mirror current source sample circuit on this basis precisely control hundreds times of realization electric currents of Current amplifier
System, makes electric current be effectively controlled using less component and more reliable method.
As shown in Figure 1, square matrix electric current Isa and switching tube Q1, which open moment sun square matrix junction capacity generation electric current, flows through inductance
L1 chooses suitable sensibility reciprocal and immediate current is well inhibited.It is controlled by main error amplification signal MEA and reference signal Vref
Metal-oxide-semiconductor Q1's processed turns on and off, and realizes sequence switch shunt regulating function.Series inductance, which is located at, to be opened in major loop, is sampled
Resistance R1 realizes current acquisition in opening process.
When metal-oxide-semiconductor Q1 is opened, electric current flows through CY+ and CY- in the upper figure of sampling resistor R1 and is connect respectively at the both ends sampling resistor R1,
Peak current value is determined by precision resistance R27 and R38.Triode is that unanimously double NPN are managed electrical property to pipe Q4, when current value reaches
When peak point current, the emitter of driving NPN pipe U4 generates the driving signal of switching tube Q1, is achieved in accurate peak point current control
System realizes that Transient Currents accurately control, ensure that circuit reliability.
The embodiments of the present invention have been described in detail above, but content is only the preferred embodiment of the present invention,
It should not be considered as limiting the scope of the invention.Any changes and modifications in accordance with the scope of the present application,
It should still be within the scope of the patent of the present invention.