Dynamic simulation of a novel free-piston linear generator

This paper proposes a new structure of free-piston linear generator (FPLG) which consists of double two-strokes combustion chambers with inner and outer piston-couples and a linear electric generator with multi-movers in order to improve the system efficiency. The one-dimensional thermodynamics model of the combustion chambers and the model of the linear electric generator have been respectively derived mathematically. And the hybrid simulation model of the whole FPLG has also been established using MATLAB/SIMULINK. The features and operation process with basic igniting and scavenging strategy have been analyzed. It indicates that the novel FPLG has comparative potential and capacity for producing higher electric power and reaching higher power density.