Pre-optimization of hybridization ratio in hybrid excitation synchronous machines using electrical circuits modelling

Hybridization ratio α is an additional degree of freedom offered by the hybrid excitation principle in the design ofsynchronous electrical machines. The first goal of this contribution is to present the tool developed for analysing the effectof the hybridization ratio. This software tool is based on the electrical circuits modelling of hybrid excitation synchronousmachines. This tool can also be advantageously used for the pre-optimization of this parameter. The used model and theoptimization algorithm are first thoroughly detailed. Finally, a parametric study intended to investigate the effect of somedesign specifications and parameters on this optimal value is presented.