Doubly fed electric motors have two independent multiphase winding sets, which contribute active (i.e., working) power to the energy conversion process, with at least one of the winding sets electronically controlled for variable speed operation. Two independent multiphase winding sets (i.e., dual armature) are the maximum provided in a single package without topology duplication. Doubly-fed electric motors are machines with an effective constant torque speed range that is twice synchronous speed for a given frequency of excitation. This is twice the constant torque speed range as singly-fed electric machines, which have only one active winding set. COUNT 4
QSN1 What type of motor has two independent multiphase winding sets? ANS1 Doubly fed electric motors QSN2 What advanage do independent multiphase winding sets have? ANS2 contribute active (i.e., working) power to the energy conversion process QSN3 What is one of the independent multiphase winding sets configured for? ANS3 variable speed operation QSN4 Doubly fed motors have what advantage over single fed? ANS4 twice the constant torque speed range