VERFAHREN ZUR VORGABE DES STAENDERDURCHFLUTUNGSVEKTORS.

摘要

1. A method of presetting the stator flux vector of a rotary current machine in the case of supply by a multiple phase or p-pulse, preferably 6-pulse current converter with impressed current, wherein p discrete stator flux indicator positions alpha i are available and wherein the effective position alpha of the stator flux vector is determined by switching between the p indicator positions via the hold time in the individual positions, characterised in that during the p-th part of a fundamental oscillation period in the range alpha i + alpha min < alpha < alpha i + 2pi /p - alpha min switching to and for takes place between 2 adjacent indicator positions, and in the range alpha i - alpha min =< alpha =< alpha i + alpha min of a discrete indicator position switching to and fro takes place between 3 discrete indicator positions of the flux indicator, the angle being alpha min of the minimum pulse angle, wherein the switching time determined by the rotary current machine and the current converter is maintained and this is achieved by two reference oscillations which are constantly connected with the fundamental oscillations of the multiple phase current system, and which, as is known per se, are compared with a triangular scan oscillation which is free-running at constant frequency, whereby corresponding free-running patterns are produced.