DC induction motor with stator coil driven by a unidirectional field current

A motor, including:

• a stator assembly with a stator coil to generate a periodic unidirectional magnetic field based upon a unidirectional field current flowing through the stator coil;
• a rotor assembly disposed within the stator assembly, the rotor assembly including a rotor cage with a plurality of rotor ring segments with a body portion and an arm portion;
• a rotor core with a plurality of rotor core segments with a slot disposed between adjacent rotor core segments, the slot configured to receive the arm portion of the rotor cage, the rotor core disposed within the rotor cage;
• and
• a rotor cover plate with a plurality of rotor cover plate segments, each of the plurality of rotor cover plate segments configured to be disposed over the rotor cage so as to electrically couple to a corresponding body portion of the rotor ring segment, wherein each of the cover plate segment together with the corresponding rotor ring segment define a rotor ring, and wherein the rotor cover plate defines an air gap;
• and
• a periodic current induced through the rotor ring due to the unidirectional magnetic field, the induced current flowing through the rotor cover plate segment in a first direction to rotate the rotor relative to the stator.