Using grey wolf optimizer to minimize voltage total harmonic distortion of a salient-pole synchronous generator

Abstract

It is important to evaluate optimum design parameters of Synchronous Generator (SG) to obtain the desired Total Harmonic Distortion (THD). This study aims to determine the optimum rotor design parameters of SG using Grey Wolf Optimizer (GWO) algorithm. To this end, regression modeling is performed to mathematically model the relationship of the selected rotor design parameters (slot pitch, center slot pitch, and damper width) with THD (response). These factors have not been previously investigated in the related literature. Next, optimization is applied to this regression equation using GWO. Maxwell simulations are used in conjunction with numerical experiments. The GWO results are compared with the results of Genetic Algorithm (GA). The results indicate that the GWO algorithm can be well adapted to similar optimization processes and e ectively used. As a result, the voltage THD of the SG is reduced to 0.3951 under acceptable magnetic ux conditions. This GWO-aided optimization study is signi cant in that it demonstrates how SG performance can be improved by making minor changes to the production line as part of mass production without changing the outer diameter and dimensions of SG.