Measurement method for volt-ampere characteristics of solar cell array of satellite

Abstract

The invention relates to the technical field of aerospace, and provides a method for testing volt-ampere characteristics of a solar cell array of a satellite. The method comprises the steps of: configuring a satellite power system into an unadjusted bus structure; outputting telemetry data by the satellite power supply system; acquiring the telemetry data by a comprehensive electronic single machine, and storing the telemetry data in a storage terminal; transmitting the telemetry data to a ground system through an over-the-ground downlink by the storage terminal; and carrying out analytical calculation by the ground system according to the telemetry data to obtain volt-ampere characteristics of the solar cell array. According to the method, a measurement system does not need to be independently designed, and the weight and control complexity of the satellite are reduced; volt-ampere characteristics of each solar array can be measured synchronously; the output power of the solar cell array is not influenced in the measurement process; and the measurement system does not need to be operated frequently, so that the satellite operation control management workload is greatly reduced.

Description

technical field [0001] The present invention generally relates to the field of aerospace technology, in particular to a method for testing the volt-ampere characteristics of a solar cell array of a satellite. Background technique [0002] The volt-ampere characteristics of the satellite's solar cell array need to be measured during the satellite's in-orbit operation. In the prior art, satellites measure the volt-ampere characteristics of the solar cell array including a bypass measurement method and an equivalent measurement method. [0003] In the bypass measurement method, the satellite bus power supply path and the volt-ampere characteristic measurement path provided by the solar cell array are independent of each other, and the power supply and the volt-ampere characteristic measurement path are switched through switches, and the measurement is performed on the volt-ampere characteristic measurement path. [0004] In the equivalent measurement method, a part of the circu...

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Problems solved by technology

[0005] Existing methods for measuring the volt-ampere characteristics of solar cell arrays have the problems of complex control, heavy weight, and high cost

[0006] The bypass measurement method can better obtain the volt-ampere characteristics of the solar cell array, but it must bypass the output power of the measured solar cell array to the measurement system during measurement, resulting in that this path of the solar cell array cannot be a satellite load Power supply, there is a problem of overall power loss, and the measurement system cannot measure the volt-ampere characteristics of all solar arrays at the same time

[0007] The equivalent measurement method will reduce the layout rate of the solar cell array, and its equivalence depends heavily on the processing consistency of the solar cell array, so only quantitative measurements with errors can be made on the volt-ampere characteristics of other solar cell arrays, and this The error cannot be calibrated and eliminated

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