Abstract: The system and method manages an electrical output of a turbogenerator in accordance with multiple modes. In a first mode, a direct current (DC) bus receives power from a turbogenerator output via a rectifier where turbogenerator revolutions per unit time (e.g., revolutions per minute (RPM)) or an electrical output level of a turbogenerator output meet or exceed a minimum threshold. In a second mode, if the turbogenerator revolutions per unit time or electrical output level of a turbogenerator output are less than the minimum threshold, the electric drive motor or a generator mechanically powered by the engine provides electrical energy to the direct current bus.

Abstract: An apparatus for controlling generation of power to be generated by a generator driven by an engine mounted on a vehicle equipped with an electrical load operative on the power from the generator, the generator including a field winding to which current is supplied on the power, and a duty cycle of the current being increased to maintain the power of the generator, the apparatus comprising duty cycle limit means for limiting an increasing rate of the duty cycle in response to an increase in an amount of the load when the engine is in an idle state; rotation frequency detecting means for detecting the rotation frequency of the engine; and limit value deciding means for deciding a limit value for the increasing rate of the duty cycle to a greater value than a limit value corresponding to the idle state, when the rotation frequency detecting means detects a decrease in the rotation frequency.

Abstract: A process and apparatus for reducing nitrogen oxide emissions in a genset comprising an engine and a generator and a shaft coupled to the engine and generator. The apparatus directs the generator to reduce load on the shaft while directing the engine to seek a steady state shaft speed for a desired energy transfer to the shaft when a shaft speed correction signal representing a shaft speed correction to reach the desired energy transfer meets a criterion.