A current sharing method for spacecraft solar power regulation modules without current detection

Abstract

The invention provides a current sharing method of a spacecraft solar power adjustment module without current detection. The method comprises the following steps: S1, designing a solar power adjustment module in parallel operation; S2, extracting an output current amount of the solar power adjustment module in parallel operation; S3, carrying out current sharing controlling; to be specific, on thebasis of characteristics of the power curve of the solar cell, performing the current sharing controlling only in a voltage stabilization mode of the solar power adjustment module, working at the right side of a maximum power point of the power curve by a solar array in the voltage stabilization mode, and controlling an operating point voltage of the solar cell array to control the output power balancing being current balancing to complete current sharing. The current sharing method has the following beneficial effects: current sharing controlling is realized by introducing the operating voltage of the solar array directly without detection of the output current of the solar power adjustment module, thereby avoiding the complex current detection circuit, making the current sharing controlbe simple and reliable, and lowering the cost.

Description

technical field [0001] The invention relates to a power supply system of a spacecraft, in particular to a current sharing method for a solar power regulating module of a spacecraft without current detection. Background technique [0002] The spacecraft power supply system mostly uses solar cell array power generation to obtain energy. The power of the solar array is processed by the power regulation module and then output to the busbar. Power output is a commonly used technical solution. [0003] Parallel operation of low-power systems has many advantages in practical applications. On the one hand, low-power systems are easy to integrate and debug, and can achieve high-power output through parallel connection; on the other hand, if a single module in parallel fails, it will not affect other power supply modules. The normal work of the system greatly improves the reliability of the whole system. [0004] Although the advantages of parallel operation of low-power systems are...

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Problems solved by technology

[0007] In order to solve the problems in the prior art, the present invention provides a current-sharing method for spacecraft solar power regulation modules without current detection, to solve the problem of current detection compared to the The disadvantages of circuit complexity, high cost, and poor reliability brought about by voltage detection enable simpler current sharing control

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