Very fast variable speed magnetic load calculation in early design phase based on force extrapolation algorithms, applicable in open-circuit for SM /no-load for IM or fixed load angle case for SM / fixed slip and voltage for IM. All post processing of e-NVH are extended to variable speed (noise and vibration waterfalls, order tracking analysis, modal participation factors). To account for saturation / load effects more accurately at variable speed, use of ALG.LIA is recommended.