A digital control system for satellite power controller

Abstract

The invention discloses a digital control system suitable for satellite power supply controllers. It adopts a centralized and decentralized integrated "master-slave" framework, and provides a corresponding digital slave control unit for each functional module to carry out the control of the corresponding functional modules. control and management to realize the power conversion required by the power system; each digital slave control unit is connected to the digital main control module through the internal data bus and is controlled and dispatched by it; the digital main control module controls, manages and dispatches the whole power system, and provides charging The discharge current reference and module working mode are responsible for stabilizing the bus voltage, battery charging and discharging management, and cutting and input control of the digital slave control unit. Improve reliability through "N+1" module configuration. When a module in the system is damaged, the digital main control module controls it to leave the system to achieve fault isolation. At the same time, it controls the input of redundant modules to ensure that the entire system can still work normally in the event of a fault. Work, has important engineering application value.

Description

technical field [0001] The invention relates to the field of digital control, in particular to the field of digital control of satellite power system power control and DC / DC power conversion, and in particular to a digital control system framework and control strategy for a satellite power controller. Background technique [0002] The power supply subsystem is one of the important components of the satellite platform, and its development level plays a key role in improving satellite performance and prolonging the working life of the satellite. With the optimization of spacecraft functions and performance, the expansion of load capacity, and the diversification of orbits, higher requirements are put forward for technologies such as configuration management, fault detection and diagnosis of spacecraft power systems. On the one hand, the distributed power supply and distribution architecture of the spacecraft system has made an essential leap in the number of power controllers ...

AI Technical Summary

Problems solved by technology

On the one hand, the distributed power supply and distribution architecture of the spacecraft system has made an essential leap in the number of power controllers used, which not only requires reducing the weight and volume of each module, but also requires reasonable management and coordination of all functional modules. monitoring; on the other hand, some applications of high-precision loads and special loads require high-performance power controllers as front-end support. protection and management logic

The current analog power controllers are difficult to meet the changes in the application requirements of the load, resulting in a complex and large power system or a long production cycle for customized power supplies

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