Double rotor electric motor with annular stator winding - induces co-operative currents in short-circuit windings of rigidly coupled internal and external rotors

摘要

The concentric rotors (5, 6) fixed to a common shaft (4) rotate respectively within and around a stator (7) which is bolted (8) to a bearing plate and has an annular winding laid in grooves around its outer and inner edges. The rotors (5, 6) carrying cage windings (15, 16) in corresp. grooves (14) have equal numbers of poles,a nd their torques are added together. On the edges of the stator (7), poles of opposite polarity are arranged in alternate sequence. USE/ADVANTAGE - Max. power is obtainable at min. cost of material.