A New Type of Constant-Torque Motor

A new type of single-phase alternating current motor that produces constant torque for any operating speed is described. The magnitude of the torque is adjustable. When rotation is in the direction of the developed torque motor action results. With reversed rotation the machine performs as a generator without change of the magnitude or direction of its developed torque. Efficiencies are comparable to those of conventional motors of equivalent ratings. No electronic devices or moving parts are required in the supply system. Sinusoidal voltages and currents prevail throughout the supply system and the motor components.