![]() During Portion OAĭuring the part OA of the alternating current cycle, the flux starts to increase, and an e.m.f. We will explain the working of a shaded-pole motor, keeping in mind the cycle of the alternating current being applied to the stator winding. The operation of motors can be understood in terms of the figure, which shows one pole of motors with a shading coil. Therefore, the direction of rotation cannot be reversed unless the machine is constructed in such a way that the shedding coil can be transferred to the other half of the pole.Īlso, Read: What Is a Motor Shaft? | How Shafts in AC/DC Motors Function | Common Uses of AC/DC Motors | Construction of a Motor Shaft Working of Shaded Pole Induction Motor: The direction of rotation of the shaded pole motor depends on the position of the shading coil, i.e., half of the pole is wrapped around the shading coil.It is suitable for small equipment that requires low starting torque.The efficiency of the shed pole motor is low due to constant power loss in the shedding coil.The shaded pole induction motor produces very small starting torque, about 50% of full load torque.The speed of a shaded pole induction motor is inversely proportional to the number of poles used in the motor.Some of the important features of shaded pole induction motors are given below. The shaded pole motors rotate only in a particular direction, and the reverse motion of the motor is not possible. These coppers ring acts as a secondary winding for the motor. A copper ring is also called a shaded ring. The shedding coil mounted on the main pole is called a shedding pole.Īlso, Read: What Is an ECM Motor? | Use of ECM Motor | How Does an ECM Motor Work? | Advantages of ECM Motor Shaded Pole Induction Motors:Ī shaded pole induction motor is simply a self-starting single-phase induction motor whose one pole is shaded by a copper ring. This ring is also known as the shading coil. A copper ring, which is a single turn, is mounted on the small part. In this motor, the poles are divided unevenly into two parts where the smaller part is the shaded part which has a copper band. The main winding is formed from the supply winding on the main pole. The stator has projecting poles which are also called main poles. This motor is made up of a stator and a rotor which is of cage type. It has two poles, as shown in the original construction. It is also a major pole split phase motor. For these reasons, it has poor efficiency. The starting torque induced in the motor is very low. ![]() This motor has very high power inductance loss and also has a very low power factor. It specifically only rotates in one direction, and it is impossible to reverse the moment. Another name for a copper ring is a shaded ring, where it serves as the motor’s secondary winding. Applications of Shaded Pole Induction Motor:Ī shaded pole induction motors are a simple single-phase induction motor that self-starts with one of the poles shaded by a copper ring.Working of Shaded Pole Induction Motor:.Characteristics of Shaded Pole Induction Motors:.Working Principle of Shaded Pole Induction Motors:.
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