Dual Speed or two speed electric motors
Dual Speed Motor Dual speed motors, also known as two-speed motors, are electric motors designed to operate at two distinct speeds. Most of these motors typically achieve their dual-speed capability through Pole-changing motor they also known as Dahlander motors because they were created by Robert Dahlander (1870–1935). l Principle of operation. A regular induction motor. works on the principle of electromagnetic induction where the alternating current passing through the stator winding induces a rotating magnetic field. This magnetic field then induces a current in the rotor winding, causing it to rotate and generate torque. The rotor of the induction motor rotates because it tries to catch the rotating magnetic field (Ns) generated in the stator. It can never catch this magnetic field because of the slip and it turns chases this field until power is removed from the stator coils and the rotating magnetic field disappears. The speed of the rotor depends on the speed of the stator&