Flux offset compensation for a rotating electrical machine

摘要

A method for compensating the flux drift caused by measurement and/or calculation errors when controlling a rotating electrical machine 20 is provided. The flux drift of the estimated flux vector may be compensated by comparing the length of the flux vector with a reference flux magnitude which already has been determined for controlling the inverter. Depending on the comparison, the length of the estimated flux vector will be lengthened or shortened.