Influence of the Parasitic Solar Array Capacitance in the Sequential Switching Shunt Series Regulator

This work deals with the effect produced by the solar array capacitance on the sequential switching shunt regulator, S4R. In the past, silicon solar cells were widely used with practically no effect upon the solar array regulator, so that the solar array capacitance was a minor problem in the design. Nowadays, the usage of triple junction GaAs solar cells with larger parasitic capacitance has prompted new questions about power losses, steady state and dynamic responses in the S4R. In this work, the effect of the solar array capacitance is quantified by analytical models. Simulations and experimental prototyping support the models