![]() ![]() ![]() However, it has been observed that if the rotor is given an initial rotation in any direction, the single-phase induction motor develops torque and the rotor continues to pick up speed in that particular direction. Thus, no torque is developed at starting. The force experienced by the upper half conductors opposite to the force on lower half conductors, which have been shown in Fig.3. Currents are induced in the rotor conductors by transformer action, these currents being in such a direction as shown in Figure 3. When the stator winding of a single phase induction motor is connected to single phase ac supply, a magnetic field is developed, the axis of this magnetic field is stationary in the horizontal direction as shown in the Figure 4. Working Principle of Single Phase Induction MotorĪ single-phase induction motor with a distributed stator winding and a squirrel-cage rotor is shown in Figure 4. ![]() The rotor has aluminium or copper bars which are permanently circuited at both ends by conducting end rings.įigure 2 Single-phase induction motor Parts. This rotor is called squirrel cage, as appear like cage as shown in Figure 2 (b). It is the rotating part of the motor as shown in Figure 2 (b). The stator core carries the Stator winding is connected across a single phase AC supply which produces a rotating magnetic field. The stator core carries the alternating flux which produces eddy current and hysteresis losses. The stator core is built up of thin sheets laminations which are usually 0.3 to 0.5 mm thick. Outer body of the motor to support the stator core and the stator windings. It is the stationary part of the motor as shown in Figure 2 (a). The single phase induction motor has two main parts one is stator (which is stationary) and other is rotor (which is rotating). There is uniform air gap between stator and rotor but no electrical connection between stator and rotor. Construction of Single Phase Induction MotorĪ single phase induction motor is similar to a 3-phase squirrel cage induction motor in physical appearance except that the stator has distributed single-phase winding. ![]() Figure 1 shows the Dismantled view of a single phase induction motor.įigure 1: Dismantled view of a single phase induction motor. If one line of a three phase induction motor is opened while the motor is running with moderate or light load, it is found that a three phase induction motor has become a single phase motor. In this topic, you study Single Phase Induction Motor – Construction, Diagram, Working Principle, Types, Applications, and Disadvantages. ![]()
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