Patent ID: 7269036

Claim:
A method of operating an electrical power converter system to transform power from a power source, the method comprising: selecting between a value of a wakeup voltage parameter calculated in real time and a value of the wakeup voltage parameter stored in a historically based lookup table, wherein the value of the wakeup voltage parameter from the historically based lookup table is based at least in part on a real world time; determining a voltage available from the power source; determining if the determined voltage available from the power source exceeds the selected value of the wakeup voltage parameter; if the determined voltage available from the power source exceeds a threshold corresponding to the selected value of the wakeup voltage parameter, determining a power available from the power source; determining if the power available from the power source is less than a startup power threshold; providing power to a load if the power available from the power source is not less than the startup power threshold; calculating a value of the wakeup voltage parameter based on the power available from the power source with respect to the startup power threshold; and activating power electronics that are brought out of a sleep state.