Optimum pole arc offset in permanent magnet synchronous generators for obtaining lowest voltage harmonics

In this study, the eect of parametric variation of pole arc oset 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 oset value have been made. The THD is determined for each voltage wave-shape. As a result of optimization study, the eciency and output power have been kept approximately constant. The THD of the output voltage has decreased.