Patent ID: 7990114

Claim:
A control apparatus for electrical power generating system (EGPS) comprising: a sensor for sensing shaft power available from an engine of the EPGS and producing a shaft power signal; a sensor for producing a mechanical loss signal; a sensor for producing an electrical loss signal; calculator blocks for combining the loss signals with the shaft power signal to produce an engine-power-available signal; a sensor for sensing a level of current of an electrical load applied to a generator of the EPGS; a controller for controlling output voltage of the generator; and a calculating device for receiving the engine-power-available signal and for determining a determined voltage required to provide the sensed level of current to the electrical load with the sensed shaft power available from the engine of the EPGS; wherein the calculating device and the controller are interconnected so that the output voltage corresponds to the determined voltage when the electrical load exceeds power available from the engine whereby overload protection is provided for the engine and the generator.