Solar cell capacitance time domain testing device and testing method

Abstract

The invention discloses a solar battery capacitor time domain testing device and testing method. The solar battery capacitor time domain testing device comprises a direct current power supply, a pulse generating circuit, a field effect tube, a switching control circuit and a resistor to be detected. The testing device controls the complementary starting of the field effect tube and the switching control circuit mainly through the pulse generating circuit; when the switching control circuit is started, the direct current power supply charges a solar battery capacitor; and when the switching control circuit is closed, the charged solar battery capacitor is discharged through the resistor to be detected and the field effect tube, the discharge current of the resistor to be detected is monitored through a first oscilloscope connected in parallel with the resistor to be detected, and the discharge voltage of a solar battery is monitored through a second oscilloscope connected in parallel with the solar battery, thereby obtaining an equivalent capacitor of the solar battery by virtue of calculation. The testing method has the advantages of simple hardware structure, high efficiency and high accuracy and can be used for testing spatial single solar batteries or satellite solar battery arrays.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a solar cell capacitance time-domain testing device and testing method. Background technique [0002] For the current field of communication satellites, the main energy comes from solar cells, and the dynamic parameters of the capacitance of solar cells are one of the important parameters for designing a reliable and effective space solar cell array. Understanding the capacitive dynamic behavior of solar cells is necessary for designing the switching capability of solar arrays in space and the reliability of regulating controllers. It directly affects the interface compatibility of power controllers in space solar arrays. [0003] The solar cell is an active device, its own capacitance is constantly changing with the light and external voltage, and its capacitance is a dynamic nonlinear capacitance, which cannot be used for general test equipment such as LRC tester or multim...

AI Technical Summary

Problems solved by technology

However, this test method uses expensive equipment such as network analyzers, and the data processing is quite complicated. It needs to be integrated and iterated multiple times in the frequency domain, and the data needs to be corrected multiple times.

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