In this study, the effect of parametric variation of pole arc offset distance on the performance of a Permanent-Magnet Synchronous Generator (PMSG) used in wind energy applications has been investigated. Fourier analyses of the voltage wave-shapes that are obtained by the parametric variation of the pole arc offset value have been made. The THD is determined for each voltage wave-shape. As a result of optimization study, the efficiency and output power have been kept approximately constant. The THD of the output voltage has decreased. (c) 2017 Sharif University of Technology. All rights reserved.