This paper presents a study of the Wound Rotor\udSynchronous Machine (SM) stability under voltage sags (dips).\udMachine behavior has been analyzed by considering different\udmagnitudes (or depths) and duration of the sag. Voltage sags\udcause speed variations on SM (with possible lost of synchronism),\udcurrent and torque peaks and hence may cause tripping and\udequipment damage, which leads to financial losses. Three\udmachines of different nominal power have been modeled and\udsimulated with MATLAB in order to study its behavior under\udvoltage sags. These SM’s have been analyzed operating as\udgenerator, as motor, and in both cases, working under-excited and\udoverexcited.
展开▼
