Linear generators for direct-drive wave energy conversion

Abstract

The Archimedes Wave Swing (AWS) is a system that converts ocean wave energy into electric energy. The goal of the research described in this paper is to identify the most suitable generator type for this application. Of the more conventional generator types, the three-phase permanent-magnet synchronous generator with iron in both stator and translator is most suitable, because it is cheaper and more efficient than the induction generator, the switched reluctance generator and the permanent. magnet generator with air-gap winding. The paper also proposes a new transverse-flux permanent-magnet generator topology that could be suitable for this application. This new double double-sided TFPM generator has flux concentrators, magnets, and conductors on the stator, while the translator only consists of iron.