Composite bus system satellite whole star anti-current impact plus power-off system

Abstract

The invention provides a whole-satellite anti-current-shock power-on / off system for composite bus system satellites. The problem of current chock between a power controller and a battery pack at the power-on / off moment during whole-satellite test can be solved. A battery relay box realizes a whole-satellite power-on / off control circuit in the process of whole-satellite AIT test, and is provided with a path positive module and a path negative module. A whole-satellite power-on operation module carries out operation based on the circuit design of the battery relay box and the design of the whole-satellite power supply path and according to a strict operation order and interpretation method to realize the soft start process of whole-satellite power-on. A whole-satellite power-off operation module carries out operation based on the circuit design of the battery relay box and the design of the whole-satellite power supply path and according to a strict operation order and interpretation method to realize the soft start process of whole-satellite power-off.

Description

technical field [0001] The invention relates to a system for preventing current impact and power-off of a satellite whole satellite with a compound bus system, in particular to a system for preventing current shock and power-off of a SAR satellite with a high-power compound bus system. Background technique [0002] SAR satellites have high-power pulse loads. Traditional SAR satellites use a dual-independent bus system power supply system to match pulse loads, which has low energy utilization, multiple equipment support, and low power density; the new composite bus system SAR satellite power system can solve the dual independent bus system. The disadvantages, greatly improving energy utilization and system power density. [0003] In the composite bus system power supply system, the power output of the solar cell array, the power controller and the large-capacity battery pack are directly connected in parallel to form a high-power non-regulated bus, and at the same time the no...

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Problems solved by technology

[0002] SAR satellites have high-power pulse loads. Traditional SAR satellites use a dual-independent bus system power supply system to match pulse loads, which has low energy utilization, multiple equipment support, and low power density; the new composite bus system SAR satellite power system can solve the dual independent bus system. disadvantages, greatly improving energy utilization and system power density

[0003] In the composite bus system power supply system, the power output of the solar cell array, the power controller and the large-capacity battery pack are directly connected in parallel to form a high-power non-regulated bus, and at the same time the non-regulated bus outputs a fully regulated bus through a fully regulated bus converter; the composite bus system satellite not only There are problems of parallel connection of battery packs and large-capacity capacitor arrays of power controllers, and the problem of full-star on-load start-up. Therefore, while improving system performance, the composite busbar system power system also brings unacceptable problems when the whole star is powered off. The disadvantage of avoiding the current shock, the current shock will have a non-negligible impact on the safety and reliability of satellite-related equipment

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