DISPOSIZIONE A RADDRIZZATORE A ROTORE CONTROLLATO PER UN AZIONAMENTO A RECUPERO DELLO SCORRIMENTO

摘要

SCR devices replace the usual diodes of the rectifier bridge section of a wound-rotor slip-recovery system motor drive. By controlling the retardation angle of the SCR devices while controlling the line bridge for acceleration from zero speed to normal speed, the rating of the overall system is reduced. By removing the gating signal of the SCR's while operating at a retardation angle in the range between zero and 90 DEG , operation is immediately brought to a stop in case of an emergency.