Affiliation:
1. Department of Mechanical and Mechatronic Engineering, Cape Peninsula University of Technology, Cape Town 7530, South Africa
Abstract
The significance of reliable energy storage systems in spacecraft applications cannot be overstated, since they play a vital role in ensuring continuous power supply and prolonged mission durations. This research deals with the modeling of a hybrid multi-mission radioisotope thermoelectric generator (MMRTG)-lithium-ion (Li-ion) battery integrated energy storage system for spacecraft applications to combine the RTGs’ long lifespan and reliability benefits alongside the Li-ion battery’s rechargeability and high energy density to achieve a single energy unit. The investigation’s main problem was exploring a power unit that improves the limitations of MMRTG and Li-ion batteries to achieve a highly efficient and reliable power supply for autonomous systems, such as a spacecraft. The proposed hybrid system comprises a 110 W/32 V RTG and a 3.6 V/43 Ah Li-ion battery connected to a DC motor through power converters. Results demonstrate the potential of the adopted hybrid energy system in improving the efficiency, reliability, and mission duration of spacecraft missions. The assessment of the hybrid energy system under various load conditions shows that the highest power peak of 3500 W was achieved at a load resistance of 1 Ω. Furthermore, the results show that the hybrid energy system output voltage at temperatures of 253 °K and 293 °K are relatively equal. However, the power cycle was wider and required a long time before dropping.
Subject
Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction
Reference37 articles.
1. Power Control Design of a Battery Charger in a Hybrid Active PV Generator for Load-Following Applications;Fakham;IEEE Trans. Ind. Electron.,2011
2. Becherif, M. (2006). Passivity-Based Control of Hybrid Sources: Fuel Cell and Battery, IFAC.
3. European Radioisotope Thermoelectric Generators (RTGs) and Radioisotope Heater Units (RHUs) for Space Science and Exploration;Ambrosi;Space Sci. Rev.,2019
4. Obodovskiy, I. (2019). Radiation: Fundamentals, Applications, Risks, and Safety, Elsevier.
5. Zoui, M.A., Bentouba, S., Stocholm, J.G., and Bourouis, M. (2020). A Review on Thermoelectric Generators: Progress and Applications. Energies, 13.
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