What Is The Application Of Shaded Pole Motor - What Is The Use Of Pole In Motor?

When the number of poles and the number of slots increases, a large torque can be obtained and the torque pulsation also decreases. The pole represents the number of permanent magnet poles for the rotating rotor, and a motor with one pair of N pole/S poles is called a two-pole motor.

What is a shaded pole motor?

A shaded-pole motor is a small squirrel-cage motor in which the auxiliary winding is composed of a copper ring or bar surrounding a portion of each pole. When single phase AC supply is applied to the stator winding, due to shading provided to the poles, a rotating magnetic field is generated.

Where can we use the shaded pole instruments?

Applications of Shaded Pole Induction Motor

• To drive the loads which require low starting torque.
• In table fans.
• In exhaust fans.
• Hair driers.
• Fans for refrigeration & air-conditioning equipment.
• In electronic equipment, etc.

What is the horsepower range of shaded-pole motors?

The output capability of a shaded pole motor will range from "sub-fractional HP" i.e. 1/30 HP to a maximum of 1/4 or 1/3 HP. Speeds will commonly be 2 pole (3000 RPM), 4 pole (1550 RPM) and 6 pole (1050 RPM).

What is the application of universal motor?

Universal Motors are used in table fans, hairdryers and grinders. They are used in portable drill machines. They are used in polishers, blowers and kitchen appliances.

What is the difference between shaded pole and PSC motors?

Motors	Efficiency Range
Shaded Pole (Induction)	15-25%
Permanent Split Capacitor (Brushed DC)	30-50%

What is shaded pole type?

The shaded-pole type single-phase induction motor is one that has, in addition to the master wiring, an auxiliary short-circuited winding shifted from the master winding by an electric angle of less than 90 degrees.

How many RPM is a Pole?

Motor Wiring and Number of Poles A 60 Hz power supply changes polarity 60 times per second, and a two-pole motor will spin at 3,600 rpm when connected to this source. A four-pole motor will only rotate at 1,800 rpm. For 50 Hz motors, the speed is 3,000 rpm with 2 poles, and 1,500 rpm with 4 poles.

How is a shaded pole motor made?

This motor is made up of stator and a rotor which is cage type. The stator has projected poles also called main poles in it. The supply winding on the main poles forms the main winding. The poles in this motor are unequally divided into two halves where the smaller portion is shaded portion that carries a copper band.

Which motor is used in clock?

With the application of the synchronous electric motor to clocks in 1918, domestic electric clocks became popular. A synchronous electric motor runs in step with the frequency of the electric power source, which in most countries alternates at 60 hertz (cycles per second).

What are the application types of motor?

Some of the most common electric motors used today include:

• AC Brushless Motors. AC brushless motors are some of the most popular in motion control.
• DC Brushed Motors. In a DC brushed motor, brush orientation on the stator determines current flow.
• DC Brushless Motors.
• Direct Drive.
• Linear Motors.
• Servo Motors.
• Stepper Motors.

What is the function of pole?

In complex analysis (a branch of mathematics), a pole is a certain type of singularity of a function, nearby which the function behaves relatively regularly, in contrast to essential singularities, such as 0 for the logarithm function, and branch points, such as 0 for the complex square root function.

How do you control the speed of a shaded pole motor?

Triac-type dimmer switches are commonly used to "throttle" ceiling fans. They have the shaded pole motors, so if you have a shaded pole motor device, go right ahead to use a normal dimmer as a throttle for that device. Also, series-wound "universal" motors can be throttled the same way.

What is the efficiency of shaded pole motor?

The efficiency of shaded pole induction motor is very low almost in the range of 5 to 35%. The efficiency of shaded pole induction motor is low due to power loss in the shading coil.

What are the applications of DC & AC motors?

AC motors are preferred for compressor power drives, air conditioning compressors, and hydraulic, and irrigation pumps. DC motors are preferred for steel mill rolling equipment, and paper machines.

What is the use of poles in DC motor?

The stator of the DC motor has poles, which are excited by DCs to produce magnetic fields. In the neutral zone, in the middle between the poles, commutating poles (supplied by a DC) are placed to reduce sparking of the commutator. Compensating windings are mounted on the main poles.

Why is it called shaded pole?

Why Is It Called a Shaded Pole Induction Motor? The shaded pole induction motor is a self-starting single-phase induction motor with a copper ring shading one of the poles. The shaded ring is another name for the copper ring. This copper ring serves as the motor's secondary winding.

What is a two pole motor?

A motor that contain two poles (or a single pair of magnetic poles north and south) are said to be a 2-pole motor. Often stator windings are the north and south poles. Number of stator windings can give any reasonable number of poles ranging from 2 to 12.

Do shaded-pole motors need a capacitor?

Shaded pole motors are the original type of AC single-phase induction motor. Also called a single phase induction motor, simply connecting to a single voltage line and an external capacitor is required to make this motor turn.

Which motor has highest efficiency?

The maxon high efficiency motors get their name because they provide efficiencies in the 90 percentiles as opposed to the 50 to 60 percent range for most motors in their class.