Hierarchical control system of distributed space power supply system

Abstract

The invention discloses a hierarchical control system for a distributed space power supply system. The hierarchical control system is suitable for the distributed space power supply system based on standard power building blocks. The system comprises a top-layer controller, a middle-layer controller, a bottom-layer controller and a data transceiving unit; wherein the top-layer controller, the middle-layer controller and the data transceiving unit are arranged in an OBC (on-board computer), and the top-layer controller is responsible for task analysis, power generation prediction, power flow optimization and the like. The middle-layer controller is responsible for bus voltage steady-state offset adjustment, power and mode setting, fault processing and the like. The bottom layer controller is arranged in an intelligent control unit of the standard intelligent power building block. The reliability of load power supply is ensured while global power flow optimization is realized through a hierarchical control strategy. The control strategy integrates the advantages of centralized control and distributed control, so that the system can still work normally under OBC and communication faults, and high robustness is achieved.

Description

technical field [0001] The invention relates to the technical field of distributed space power supply, in particular to a layered control system of a distributed space power supply system. Background technique [0002] The traditional space power supply adopts centralized control: the most common space power supply system adopts the fully regulated bus architecture of S3R technology. The S3R architecture is widely used in the development of power controllers because of its simplicity, reliability and high efficiency. The S3R architecture adopts centralized control. The DC power system consists of a shunt controller SR, a battery charge controller BCR and a battery discharge controller BDR, all of which are controlled by the main error amplifier MEA. S3R power regulation technology mainly regulates and controls the busbar through the error op-amp interval, and controls the shunt regulation unit, charging unit and discharging unit respectively to realize the busbar regulation...

AI Technical Summary

Problems solved by technology

The traditional space power control method usually adopts a centralized control architecture, which has low system reliability and poor maintainability. The emerging distributed power system also usually adopts a centralized control method based on OBC.

Once the centralized controller fails, the whole system cannot work normally, and the system robustness is poor

Centralized control has become a short board that affects the reliability of the spacecraft power system, and it is urgent to use a new control architecture to make up for its shortcomings

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