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http://dx.doi.org/10.5370/KIEE.2016.65.4.593

DCM Analysis of Solar Array Regulator for LEO Satellites  

Park, Heesung (Satellite Electrics Dept. Korean Aerospace Research Institute)
Cha, Hanju (Dept. of Electrical Engineering, Chungnam National University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.65, no.4, 2016 , pp. 593-600 More about this Journal
Abstract
The solar array regulator for low earth orbit satellites controls a operating point of solar array for suppling electric power to the battery and the other units. Because the control object is reversed, the new approach for large and small signal analysis is needed despite using buck-converter for power stage. In this paper, the steady state analysis of solar array regulator is performed in continuous conduction mode and discontinuous conduction mode, and the border condition for each mode is established. Also, the small signal model of solar array regulator is established in discontinuous conduction mode. Experiments are carried on in worst condition which the solar array regulator can face with discontinuous conduction mode. The results show that the solar array regulator is in stable.
Keywords
Satellite; LEO; SAR; CCM; DCM; Small-signal; Model; Voltage control;
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