Designers aim at finding answers for present questions, as: increasing performances of asynchronous motors, reducing manufacturing and exploitation costs, by adopting optimization solutions. The condition imposed to the asynchronous motor designed is a limited starting current, because it drives a coal mill, where the inertia moment is important, resulting a significant increase in the starting time. The simulations carried out provide some quantitative and qualitative information, necessary in finalizing the optimum constructive solution, where the criterion is minimum exploitation cost.

Keywords: Asynchronous motors, Optimal design, Operation characteristics