The DRSSTC is based on the idea that the initial conditions of the tank circuit are
that the primary inductor has zero current flowing and that the primary capacitor has zero
stored charge. The zero current is relatively easyto achieve, given enough time for the
system to discharge, either via streamers removing all of the energy, or any excess energy
being rectified back to the DC bus. The problem is the charge left on the capacitor,
which is not necessarily zero, but could end up at any potential that is less than the bus
voltage.