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a power system

A power supply system and DC power supply technology, applied in electrical components, circuit devices, emergency protection circuit devices, etc., can solve problems such as the failure of a single machine to work normally, the failure of the entire satellite on-orbit mission, and the failure of the power subsystem of the satellite platform. damage, enhanced survivability, and the effect of meeting high reliability requirements

Active Publication Date: 2018-09-28
36TH RES INST OF CETC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The power supply system is the basis for the normal operation of electronic equipment. Once the aerospace load power supply system fails, it will have a direct impact on the satellite’s on-orbit mission. If the power supply system fails, if the fault spreads, it may lead to the failure of the power subsystem of the satellite platform, which will directly lead to the failure of the entire satellite on-orbit mission

Method used

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Embodiment 1

[0017] figure 1 is a functional block diagram of a power supply system provided by an embodiment of the present invention, such as figure 1 As shown, the power supply system provided by this embodiment for supplying power to aerospace loads includes a fuse protection circuit 110 , a DC / DC power supply circuit 120 , a switch control circuit 130 and a surge suppression circuit 140 .

[0018] The positive pole of the input power is connected to the positive input terminal of the DC / DC power supply circuit 120 through the fuse protection circuit 110; the negative pole of the input power supply is connected to the negative input terminal of the DC / DC power supply circuit 120 through the switch control circuit 130 and the surge suppression circuit 140. The DC / DC power supply circuit 120 converts the voltage of the input power supply into the working voltage required by the load.

[0019] When the load is short-circuited or a latch occurs, the fuse protection circuit 110 disconnects...

Embodiment 2

[0023] figure 2 is a functional block diagram of a power supply system provided by a preferred embodiment of the present invention, such as figure 2 As shown, compared with the first embodiment above, the power supply system provided by this preferred embodiment further includes an EMI filter circuit 220 and an output filter circuit 260 .

[0024] The positive input terminal of the EMI filter circuit 260 is connected to the output terminal of the fuse protection circuit 210, the negative input terminal is input to the negative pole of the power supply through the surge suppression circuit 240 and the switch control circuit 230, and the positive output terminal is connected to the positive input terminal of the DC / DC power supply circuit 250 , the negative output terminal is connected to the negative input terminal of the DC / DC power supply circuit 250 . The EMI filter circuit 260 can suppress the ripple and crosstalk loaded on the power bus voltage, and reduce the influence...

Embodiment 3

[0027] image 3 is a circuit diagram of a power supply system provided by an embodiment of the present invention, such as image 3 As shown, in this embodiment, the fusing protection circuit includes fuses F1, F2 and a resistor R1. The fuse F2 is connected in series between the positive pole of the input power supply and the positive input terminal of the EMI filter circuit. The two ends of the fuse F2 are respectively connected to one end of the fuse F1 and the current limiting resistor R1, and the other end of the fuse F1 and the current limiting resistor R1 connect. When the aerospace load is powered on, the input power supply voltage of 28V is applied to the input terminal of the fuse protection circuit to provide necessary protection against possible short circuit, latch-up and other faults that cause a sharp increase in current in the single load unit. The fuse F1 is connected in series with the current-limiting resistor R1 and the fuse F2 to form a redundant circuit d...

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Abstract

The invention discloses a power supply system which includes a fusing protection circuit, a DC / DC power supply circuit, a switch control circuit and a surge suppression circuit. The anode of an input power source is connected with the input positive terminal of the DC / DC power supply circuit through the fusing protection circuit. The cathode of an input power source is connected with the input negative terminal of the DC / DC power supply circuit through the switch control circuit and the surge suppression circuit. The DC / DC power supply circuit converts the voltage of the input power source into the operating voltage required of the load. When the load is short-circuited or latching occurs, the fusing protection circuit disconnects the path between the anode of the input power source and the input positive terminal of the DC / DC power supply circuit. The switch control circuit, by controlling the opening and closing of a relay contact, completes the connection and disconnection of a switch tube so as to realize the power-off and power-on to a loading machine. The surge suppression circuit suppresses the surge caused by the transient rapid increase in the supplied current to a machine when it starts. The power supply system of the invention can provide multiple protections. With high reliability, a loading machine can still work under a complex space environment.

Description

technical field [0001] The invention relates to the technical field of power supply design, in particular to a power supply system for powering aerospace loads. Background technique [0002] Due to the unique space environment of the satellite platform, the spaceborne electronic payload system has a unique and irreplaceable position in the field of radio frequency spectrum survey and information collection. [0003] During the in-orbit operation of aerospace payloads, due to the irreparable nature of hardware failures, the reliability design of aerospace payloads has always been the primary consideration in product design for all aerospace products. The power supply system is the basis for the normal operation of electronic equipment. Once the aerospace load power supply system fails, it will have a direct impact on the satellite’s on-orbit mission. If the power supply system fails, if the fault spreads, it may cause the power subsystem failure of the satellite platform, wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H3/08H02H9/02H02M1/14
CPCH02H3/08H02H9/025H02M1/14
Inventor 孟俊锋倪新
Owner 36TH RES INST OF CETC
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