Review on Free Piston Linear Alternator

Abstract

This study presents the development methodology of the Free-Piston Linear Alternator/Generator (FPLG). The FPLG is a free-piston combustion engine with an integrated linear generator. The engine can be used as a range-extending device in an electric vehicle. Unlike conventional internal combustion engines, a free-piston linear engine has no a crankshaft, and thus the pistons move freely in the cylinder. This allows a free-piston linear engine to easily adjust the compression ratio and optimize the combustion process. Free-piston linear engines include two main parts: a free-piston engine and a linear alternator. The free-piston engine is classified into three main types: single piston, dual piston, and opposed piston. Free-piston linear engines can operate with multi-fuel and HCCI combustion because of their variable compression ratios. Furthermore, they are used to generate the electric power applied in hybrid electric vehicles. To promote understanding of the unique features of free-piston linear engines, this study presents a review of their different designs and operating characteristics.

Keywords: FPLG, range-extending device, HCCl, variable compression ratio

Cite this Article

Shevait Pandita, Abhishek Rai. Review on Free Piston Linear Alternator. Trends in Electrical Engineering. 2018; 8(3): 8–18p.