Space energy grid-connected system control circuit based on common bus

Abstract

A space energy system based on a common bus comprises N completely independent sub-energy systems, each sub-energy system is provided with a grid-connected controller, and each grid-connected controller comprises a forward converter and a reverse converter; one end of each grid-connected controller is connected with the corresponding sub-energy system, and the other end of each grid-connected controller is connected to the common bus, namely a grid-connected bus. When the energy of the sub-energy system is surplus, the sub-energy system releases energy to the grid-connected bus through a forward converter of the grid-connected controller; when the energy of the sub-energy system is insufficient, the sub-energy system absorbs energy from the grid-connected bus through the reverse converter of the grid-connected controller; and the energy exchange and transmission among different sub-energy systems can be realized by means of the grid-connected controller through the intervention of a bus instruction. The circuit of the present invention can automatically judge the working state of the energy system and control the energy system to release energy to the grid-connected bus or absorb energy from the grid-connected bus, so that the energy optimization scheduling among multiple sub-energy systems is realized.

Description

technical field [0001] The invention relates to a control circuit of a space energy grid-connected system based on a common bus, and belongs to the technical field of space distributed energy system interconnection system control. Background technique [0002] The spacecraft power system technology is one of the core technologies of the spacecraft, and it is also one of the most critical platform subsystems. The high reliability and safety of the power system directly affect the success or failure of the mission and the reliability of the spacecraft. Building a grid-connected power supply system is an important way to improve the reliability of spacecraft power supplies, especially large spacecraft systems that need to be developed in batches and launched separately. Through the grid-connected power supply technology, the redundant protection of the bus layer of the power system and the optimal scheduling of energy among multiple spacecraft can be realized. When a power sy...

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Problems solved by technology

[0003]At present, the research on grid-connected power supply of spacecraft is still in its infancy, lacking systematic research on grid-connected power supply technology, and there is no public information about multiple spacecraft grid-connected at home and abroad Power supply technical solution

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