A control system for an electrical power generating system (EPGS) including a calculating device configured to determine a calculated required voltage needed to sustain a current level of an electrical load with available power of an engine of the EPGS and a voltage controller configured to control an output of a generator of the EPGS at a voltage that corresponds to the calculated required voltage, when electrical load on the EPGS exceeds the power of the engine, characterized in that: the calculating device is programmed with voltage-current relationships that correspond to power limit curves (206, 208, and 210), wherein the power limit curve defines a voltage at which a particular current level may be sustained in a power bus connected to the generator and represents power limits for the engine in a first set of engine operating conditions, wherein a power limit curve, of the power limit curves (206, 208, and 210), represents a condition in which the engine provides more deliverable power than that represented by the first power limit curve, and a power limit curve, of the power limit curves (206, 208, and 210), represents lower engine power availability, wherein the calculating device applies data received through inputs (30, 38) to these programmed relationships in order to calculate and provide a proper level of a V1 cmd voltage to an input of a voltage comparator that compares voltages V1 cmd and a reference voltage V ref, wherein the voltage comparator is configured to produce an inverter command signal V cmd signal, at a voltage which is equal to the reference voltage V ref and provide the inverter command signal V cmd signal to the voltage regulator to regulate voltage of power provided to the power bus at the voltage V ref, wherein, when the electrical load exceeds a calculated available power signal W E, the calculating device is configured to produce the V1 CMD signal at a voltage that is less than the voltage V ref, and the voltage comparator is further configured to provide the V CMD signal at a voltage less than V ref, the voltage comparator is interconnected with the voltage controller so that the output of the generator is controlled at a command voltage that corresponds to the V CMD signal, and wherein the EPGS is provided with overload protection without disconnection of the electrical load from the generator and the overload protection is provided without use of auxiliary power sources such as batteries or capacitors. the calculating device is programmed with voltage-current relationships that correspond to power limit curves (206, 208, and 210), wherein the power limit curve defines a voltage at which a particular current level may be sustained in a power bus connected to the generator and represents power limits for the engine in a first set of engine operating conditions, wherein a power limit curve, of the power limit curves (206, 208, and 210), represents a condition in which the engine provides more deliverable power than that represented by the first power limit curve, and a power limit curve, of the power limit curves (206, 208, and 210), represents lower engine power availability, wherein the calculating device applies data received through inputs (30, 38) to these programmed relationships in order to calculate and provide a proper level of a V1 cmd voltage to an input of a voltage comparator that compares voltages V1 cmd and a reference voltage V ref, wherein the voltage comparator is configured to produce an inverter command signal V cmd signal, at a voltage which is equal to the reference voltage V ref and provide the inverter command signal V cmd signal to the voltage regulator to regulate voltage of power provided to the power bus at the voltage V ref, wherein, when the electrical load exceeds a calculated available power signal W E, the calculating device is configured to produce the V1 CMD signal at a voltage that is less than the voltage V ref, and the voltage comparator is further configured to provide the V CMD signal at a voltage less than V ref, the voltage comparator is interconnected with the voltage controller so that the output of the generator is controlled at a command voltage that corresponds to the V CMD signal, and wherein the EPGS is provided with overload protection without disconnection of the electrical load from the generator and the overload protection is provided without use of auxiliary power sources such as batteries or capacitors.