Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
MATHEMATICAL / NUMERICAL MODELING OF A FREE PISTON ELECTRIC GENERATOR
Submission Author:
Gabriel Gomes de Castro , MG , Brazil
Co-Authors:
Gabriel Gomes de Castro, Pollyana Bento, Solidônio Carvalho, Marcelo Braga dos Santos
Presenter: Gabriel Gomes de Castro
doi://10.26678/ABCM.COBEM2019.COB2019-0924
Abstract
Subject of several academic research and some applications in the industry, linear machines have great potential to replace conventional internal combustion engines given their potential to minimize losses and maximize power. The direct combination of a free piston engine with a linear generator is called free-piston engine generator (FPEG). It is considered an alternative non-conventional electric power generator. This work aims to develop a mathematical and numerical model of a linear free-piston generator in mechanical resonance. The modeling consisted of the development of a thermodynamic model, which gives the pressure inside the combustion chamber, and a dynamic model of a spring mass system, which defines the force due to the pressure inside the combustion chamber as excitation. The coupling of both models allowed the study and simulation of the thermal cycle, as well as the analysis of the following parameters: geometric parameters of the engine, pressure, loads, forces and mass / spring assembly. The results obtained were satisfactory when compared to data obtained in the scientific literature.
Keywords
resonance, free-piston engine, free-piston engine generator, Numerical Modeling
