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Solar Arrays and Battery Power Sources Conceptual Design for Low Earth Orbit Microsatellites
Engineering and Applied Sciences
Volume 5, Issue 3, June 2020, Pages: 66-70
Received: Nov. 27, 2019; Accepted: Mar. 31, 2020; Published: Jun. 28, 2020
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Authors
Mohammed Bekhti, Algerian Space Agency, Centre for Satellites Development, Research Department in Space Instrumentation, Oran, Algeria
Messaoud Bensaada, Algerian Space Agency, Centre for Satellites Development, Research Department in Space Instrumentation, Oran, Algeria
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Abstract
The power system is a vital subsystem in a spacecraft. As long as the spacecraft has power, it can perform its mission. Almost all other failures can be worked out by ground operations from ground stations but a power loss is very fatal for the spacecraft. In the early years of spaceflight, the power system was also the limiting factor in any mission duration. Many studies show that solar cell power (short-circuit current and open-circuit voltage) are degraded by space environment radiation. The power system is designed such that the end of life (EOL) power is adequate for the mission’s requirements. Beginning of life (BOL) power is set by the estimate of the radiation damage over the spacecraft’s lifetime. It is well known in the literature, the radiation damage to solar cells is caused by high-energy protons from solar flares and from trapped electrons in the Van Allen belt. The purpose of this paper is to investigate the power system design trades involved in the mission analysis of a low earth orbit (LEO) satellite at an altitude of 700 km. Based on the power requirements of the payload and the constant power requirements for the remainder of the spacecraft (platform subsystems), the solar arrays and batteries for the spacecraft will be sized.
Keywords
Eclipse Time, Solar Arrays, Battery, Battery Capacity, Nickel-Cadmium, Lithium Ion, Nickel Metal Hydride, Primary Source, Gallium Arsenide, Solar Cells Efficiency, Fill Factor
To cite this article
Mohammed Bekhti, Messaoud Bensaada, Solar Arrays and Battery Power Sources Conceptual Design for Low Earth Orbit Microsatellites, Engineering and Applied Sciences. Special Issue: Research on Emerging Technologies in Design and Manufacturing . Vol. 5, No. 3, 2020, pp. 66-70. doi: 10.11648/j.eas.20200503.13
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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