Abstract

This paper presents a preliminary comparative study of several structures of permanent- magnet synchronous generators used for wind energy system optimization. The present contribution is to demonstrate that an analytical approach can be used as preliminary mean for carrying out a quantitative comparison of several rotors structures. The method allows an optimal choice of the rotor topology considering the techno-economical aspect of the wind system. The air gap magnetic induction is expressed as a function of the geometrical dimensions of the machine and other electromagnetic properties. The analysis of the results obtained from the simulations with Matlab software, made it possible to compare and to classify according to their performance zone, the different structures of permanent magnets synchronous generators. The goal is to make an optimal choice of a rotor for existing stator to match each specific site requirement for wind energy.

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