Development of Free Piston Engine Linear Generator System (Second Report)

- Investigation of Control System for Generator -

Abstract

Free Piston Engine Linear Generator system (FPEG) with features of thin and compact build, high efficiency, and high fuel flexibility is developed. To realize stabilized combustion and efficient power generation, a precise piston motion control method was established. The developed control system consists of a three-phase linear synchronous generator driven by a three-phase inverter and a DSP controller. This FPEG system is able to start by itself using the generator as a motor, therefore it doesn’t need any additional starting devices. It has been proved that the FPEG system is operated stably for a long period on a test bench.