SISTEMA DI CONTROLLO E RELATIVO PROCEDIMENTO DI CONTROLLO PER ALIMENTARE UN MOTORE ASINCRONO

摘要

In a control system for a double-star asynchronous motor supplied by inverters with square-wave impressed voltage pulses which generate a rotating field vector, the voltage impressed on the various phases is switched, for each phase, when the field vector adopts predetermined angular directions, and also when the field vector is in advance of and delayed relative to the said angular directions by a predetermined electrical angle of the order of 5-7.5 electrical degrees.