What is a Three-Phase Motor?
Three-phase motors are a type of AC motor that is a specific example of a polyphase motor. These motors can be either an induction motor (also called an asynchronous motor) or synchronous motor.
The motors consist of three main components – the stator, the rotor, and the enclosure. The stator consists of a series of alloy steel laminations wound with wire to form induction coils, one coil for each phase of the electrical power source. The stator coils are energized from the three-phase power source.The rotor also contains induction coils and metal bars connected to form a circuit. The rotor surrounds the motor shaft and is the motor component that rotates to produce the mechanical energy output of the motor.
The spinning fan draws ambient air from outside the enclosure. It forces the air across the stator and rotor to cool the motor components and dissipate heat that is generated in the various coils from the coil resistance.
Types of Three-Phase Motors
There are three main types of 3-phase motors
Squirrel Cage Motor
The construction is simple and rugged and consists of a cylindrical laminated core rotor with slots on the external periphery. The structure of this rotor assembly resembles the shape of a squirrel cage. The squirrel cage has rotor bars instead of the expected rotor windings. This motor does not use slip rings or brushes, making construction more straightforward and robust.
Wound Rotor Motors
How does a 3-Phase Motor Work?
IE1 basic standard motor
It has the characteristics of high efficiency, energy saving, high starting torque, low noise, low vibration, and easy maintenance;
IE2 high-efficiency motor
IE2 series motors can be widely used for driving equipment of various types of machinery, such as machine tools, blowers, pumps, compressors, Packing machinery, mine machinery, and construction machinery.
IE3 super-high efficiency motor
The product is used in various fields of the national economy, such as machine tools, pumps, fans, and compressors; it also applies to transport, stirring, printing, agricultural machinery, and other types of food that do not contain flammable, explosive, I’ve or corrosive gas applications.
Three Phase Asynchronous Motors
Three-phase motors are powered from the electrical voltage and current that is generated as three-phase input power and is then used to produce mechanical energy in the form of a rotating motor shaft.
MS Series Three-Phase Asynchronous Motor With Aluminium Housing
Three Phases Y2 AC Asynchronous Electric Motor
YBX3 Flameproof Three-Phase Asynchronous Motor
YD Series Pole-Changing Multi-Speed Three Phase Asynchronous Electric Motor
YEJ Series Electromagnetic Braking Three-Phase Asynchronous Motor
YVF2 Series Three-Phase Squirrel Cage Induction Motor with Variable Frequency Drive