Design Study of a Small Fuel Generator with Inverter

A variable speed engine generator set for an isolated power system is investigated to reduce fuel consumption and emission than conventional fixed speed engine generator. An inverter incorporated with the variable speed gasoline engine generator set can improve dynamic characteristics under a sudden load change, and power quality, fuel consumption, and emission of pollutants can be improved remarkably. The superiority of a fuzzy neural network control to the engine speed and a digital PID controller to the inverter is verified by the experimental results.