In this paper, the objective has been to confirm a
design method for SSGD with capacitor as storage
element. Results of extensive research conducted
using Pspice model to calculate the voltage drop on
the storage capacitor due to the thyristor gate current
and the SSGD ability to restore charge for single
SCR and back to back SCR in different topology at
medium voltage are presented and discussed. It is
shown that for single SCR, only voltage across SCR
is used to charge storage capacitor, while for back to
back SCR storage capacitor restores charge from
energy stored in the snubber capacitor at turn on and
the voltage across the SCR at turn off.