Multipole doubly-fed high-torque motor

Construction of a contactless high-torque motor with a high torque value at low rotational frequencies is considered. Primary and secondary windings are located on a stator and supplied from two power sources with close frequencies. In a winding less tooth rotor each tooth determines a pair of poles of the motor. In multipole fulfillment at low rotational speeds the torque of the motor is increased and the power consumption is decreased. The theoretical statements, developed in the paper, are confirmed by results of the experimental investigations