Working condition self-adaptive power supply method of morning orbit computing power satellite

By refining the power supply method of illumination condition identification and independent control of dual buses, the problems of unstable power supply and low energy utilization of computing satellites in dawn and dusk orbits have been solved, achieving stable power supply and efficient energy utilization.

CN122456449AActive Publication Date: 2026-07-24BEIJING XINGCHEN FUTURE SPACE TECHNOLOGY RESEARCH INSTITUTE
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Patent Information

Application Number
CN202610911761.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-24
Publication Date
2026-07-24
Estimated Expiration
2046-06-24

AI Technical Summary

Technical Problem

Existing power supply control methods for computing satellites in dawn-dusk orbits fail to accurately identify illumination conditions, leading to power fluctuations and insufficient power supply. Furthermore, the dual-bus control coupling affects the stability of the platform load, resulting in low efficiency in utilizing surplus power.

Method used

The power supply strategy adopts four types of lighting conditions (sunlight period, ground shadow period, transition period, and blurred shadow period), dual bus independent control and unidirectional cross-link merging unit to achieve matching between power supply strategy and computing load operation mode. The cross-link merging unit will replenish the platform power supply bus with surplus power.

Benefits of technology

It improves the accuracy and stability of power supply control, reduces power surges, and enhances energy utilization and platform load safety.

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Abstract

The working condition self-adaptive power supply method is applied to a load and a platform power supply bus which are mutually independent, and a cross-chain confluence unit which supplies electric energy of the load bus to the platform bus in a one-way mode when the load bus is controlled is connected between the two buses. The method comprises the steps that satellite in-orbit operation parameters are collected in real time; identifying an illumination period, an earth shadow period, a transition period and a fuzzy shadow period; and sending a coordinated regulation and control instruction to each power supply unit and the cross-chain confluence unit according to the current working condition and the collected parameters, adjusting the power supply power and voltage of the two buses to adapt to the power utilization demand of the computing force load, and realizing that the conventional power and the instantaneous peak power are dynamically adapted for the computing force load in the illumination period, and low-power-consumption voltage-stabilizing standby power supply is provided in the earth shadow period. Stable conventional power supply is provided in the transition period, and conventional power supply is provided in the fuzzy shadow period and peak output is prohibited. Through four kinds of working condition self-adaptive power supply strategies, the computing power load power supply stability and the energy utilization efficiency of the whole satellite are improved.
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