1. Basic concept of shaded pole motor
Shaded pole motor is an asynchronous motor mainly used for low power applications. Its working principle is based on electromagnetic induction. Shaded poles are set on the stator winding to generate a magnetic field, thereby driving the rotor to rotate.
2. Working principle
The working principle of shaded pole motor can be briefly summarized as follows:
Structural composition: Shaded pole motor is mainly composed of stator, rotor, shaded pole and winding. The stator is usually composed of iron core and winding, and the shaded pole is formed by covering the stator with copper or aluminum strips.
Induced current: When AC current passes through the stator winding, an induced current is generated in the shaded pole area. There is a phase difference between the magnetic field formed by this current and the main magnetic field, so that the rotor starts to rotate under induction.
Starting and running: Shaded pole motor can start by itself, and the speed is usually low. Suitable for occasions requiring high starting torque and stable operation.
3. Advantages and disadvantages
Advantages: simple structure, low cost, high starting torque.
Disadvantages: low efficiency and power limitation.
4. Application fields
Shaded pole motors are widely used in the following fields:
Household appliances: such as electric fans, refrigerators, air conditioners, etc.
Small pumps: used for water pumps and drainage equipment.
Power tools: such as small electric screwdrivers, grinders, etc.
5. Conclusion
As a classic type of motor, shaded pole motors still play an important role in many fields. With the introduction of new technologies, the efficiency and function of shaded pole motors are expected to be further improved to meet the modern market's demand for efficient and environmentally friendly equipment.
