A low-orbit high-voltage solar cell array current collection and testing system and method
A solar cell array and testing method technology, applied in the monitoring of photovoltaic systems, electrical components, photovoltaic power generation, etc., can solve problems such as threats to astronauts' out-of-cabin activities, power loss of spacecraft power systems, and structural potential drops
Active Publication Date: 2020-09-11
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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Problems solved by technology
The high-voltage solar arrays operating in low-orbit space stations, such as exposed interconnections, will collect the electron current in the space cold and dense plasma, resulting in power loss of the spacecraft power system and a drop in structural potential
Foreign studies have shown that the power loss caused by current collection can reach a few percent of the total power of the battery, and the drop in structural potential can lead to breakdown of solar cells, thermal control materials, and threats to astronauts' out-of-cabin activities, etc.
At present, there are no reports on the current collection and testing system and method for low-orbit high-voltage solar arrays
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[0031] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0032] The low-orbit high-voltage solar cell array current collection test system of the present invention is as figure 1 As shown, it includes a vacuum chamber 1 , an ECR plasma source 2 , a vacuum pumping system 3 , a high-voltage solar cell array sample stage 4 , a Langmuir probe 5 , a regulated power supply 6 , a voltmeter 7 and a microcurrent meter 8 . Among them, the vacuum pumping system 3 is used to pump the vacuum chamber 1, and the vacuum chamber 1 is used to provide a space vacuum environment; the ECR plasma source 2 is used to provide a plasma environment for the vacuum chamber 1, wherein the plasma environment parameters satisfy Density is 10 10 ~10 12 / m 3 , the energy is 3-5eV, the Langmuir probe 5 is used to detect the plasma environment parameters; the high-voltage solar cell sample stage 4 is placed in the vacuum chamber 1, and is used...
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The invention provides a low-orbit high-voltage solar cell array current collection test system and method, the current collection characteristics of a high-voltage solar cell array under a low-orbitplasma environment can be researched, the system structure is simple, and the method is easy to implement. The invention relates to a test system for the current collection effect of the low-orbit high-voltage solar cell array, the current collecting characteristics of the high-voltage solar cell array under the low-orbit plasma environment is researched through a ground simulation test, the on-orbit applicability of the high-voltage solar cell array can be evaluated, and a data basis is provided for the further development of spacecraft charging potential analysis.
Description
technical field [0001] The invention belongs to the technical field of space charge and discharge effect current collection effect test, and relates to a low-orbit high-voltage solar battery array current collection test system and method. Background technique [0002] With the development of spacecraft technology, it has become a trend to use high-power solar array systems on spacecraft. In order to reduce energy transmission loss and reduce cable weight, the solar array usually uses high operating voltage to increase the power of the power supply system. For example, my country's space station uses a busbar operating voltage of 100V. A space station operating in a low-orbit high-voltage solar array with exposed interconnections will collect the electron current in the space cold and dense plasma, resulting in power loss of the spacecraft power system and a drop in structural potential. Foreign studies have shown that the power loss caused by current collection can reach a...
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IPC IPC(8): H02S50/10
CPCH02S50/10Y02E10/50
Inventor 秦晓刚李得天杨生胜汤道坦柳青史亮王俊
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH