DISPOSITIF POUR LA COMMANDE DU REDRESSEUR TOURNANT D'UNE MACHINE SYNCHRONE

摘要

An apparatus for controlling rotary rectifiers of a synchronous machine, which has an exciter in the form of a polyphase a.c. generator based on semiconductor devices and designed to supply the field winding of the machine via the rectifiers. The apparatus ensures contactless generation of peak-shaped e.m.f. pulses in the control circuits of the semiconductor devices of the rectifier, distributed in time and number according to the number of phases and semiconductor devices of the rectifier and having the required slope, on/off time ratio and controlled phase of each pulse with respect to the supply voltage of the corresponding phase of the rectifier. The apparatus is designed as a polyphase pulse generator having a stator with non-salient poles and distributed field windings which are electrically perpendicular to one another, and a rotor with teeth whose heads have a maximum cross-sectional area and roots have a minimum cross-sectional area, with windings provided thereon and connected to the control circuits of the semiconductor devices of the rectifier.