Techno-Economic Optimization of a Spoke-Type Ferrite Magnet Generator for Hydropower Plant Based on Metamodeling

This paper presents the techno-economic metamodel-based optimization for different slot-pole combinations of a spoke-type interior permanent magnet synchronous generator. Optimization procedure and strategy were implemented in Ansys OptiSlang and Ansys Motor-CAD using MATLAB script. The novelty of the approach is reflected in the automatic three-line assessment of the demagnetization proximity implemented into the optimization procedure. Three slot-pole combinations, namely 135s30p, 144s24p i 144s30p, were optimized and compared based on generator active material cost and efficiency with the given optimization constraints.