Double-bus energy balance analysis method for spacecraft

Abstract

The invention discloses a double-bus energy balance analysis method for a spacecraft. The double-bus energy balance analysis method comprises the following steps of calculating solar wing output power by measuring a sun angle of incidence and a shielding area of a solar cell array; calculating load required power by measuring percentage of cable loss power and total power of electric equipment; determining a working state of a storage battery by calculating the solar wing output power and the load required power; determining the charging mode of the storage battery, and determining the current capacity of the storage battery by calculating the charging current and the discharging current; and evaluating the energy balance state of the storage battery according to the initial capacity, the current capacity and the total capacity of the storage battery. According to the double-bus energy balance analysis method, by determining the charging stage of the storage battery, the influence on the electric quantity of the storage battery from different bus voltages under the double buses is distinguished, thereby improving the calculation precision of the double-bus crossed-power-supply energy balance, and solving the problem of complex calculation of the electric quantity of the double-bus crossed-power-supply storage battery.

Description

technical field [0001] The invention relates to a method for analyzing the energy balance of dual buses of a spacecraft, which is especially suitable for energy planning of a power supply system of a spacecraft, and belongs to the technical field of spacecraft energy balance control. Background technique [0002] Energy balance analysis is the basis of spacecraft design, which provides the basis for power supply power level design of power supply system and energy planning for spacecraft on-orbit operation. The spacecraft dual-bus system includes two buses, the non-regulated bus and the fully-regulated bus. The spacecraft dual-bus system is mostly used in the field of high-power pulse loads and combined spacecraft, and is an important development direction for spacecraft. [0003] The traditional spacecraft energy balance analysis method only analyzes the energy balance of a single bus, the calculation accuracy is low, the bus voltage only considers a fixed value, the shadin...

AI Technical Summary

Problems solved by technology

[0005] The technical solution problem of the present invention is: to overcome the deficiencies of the prior art, the present invention provides a kind of spacecraft double bus energy balance analysis method, by judging the charge state of the storage battery, distinguish the impact of different bus voltages under the double bus on the battery power The impact of the influence of the two-bus cross-supply power supply improves the calculation accuracy of the energy balance, and solves the problem of complex battery power calculation for the double-bus cross-supply power supply. The parameters required for the energy balance state overcome the problem of inaccurate real-time output power of the solar wing; through the comparison of the charging current of the battery, it is effectively judged whether the battery is trickle charged and the charging power is accumulated into the charging power of the battery, which makes up for the inaccurate Pitfalls in Calculating Battery Trickle State of Charge

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