What type of motor is a rotor motor generally

Rotor motors are mainly divided into squirrel cage rotor motors, wound rotor motors, inner rotor motors, and outer rotor motors. The core difference of rotor motors lies in the relative position and structural form of the rotor and stator. Common types include squirrel cage, wound rotor (including DC and doubly fed), inner rotor, and outer rotor motors, each suitable for different work requirements.

The rotor motor is primarily categorized into the following types, as compiled from authoritative sources:

Squirrel cage rotor motor
It is a type of asynchronous motor, featuring a squirrel-cage rotor structure without windings, which generates torque through induced current. This motor boasts a simple structure and low cost, making it suitable for low-load, high-torque applications.

Wound rotor motor
It includes two types: DC motors and doubly-fed motors
DC motor: The rotor winding is connected via slip rings, supporting soft start, controllable start, and speed regulation functions.
Dual-fed motor: Achieves speed regulation and power factor control by adjusting rotor excitation through external resistors or power electronics.

Internal rotor motor
The rotor is embedded within the stator, typically featuring fewer poles, high rotational speed, and low torque. It is commonly found in high-speed applications, such as power tools.

external rotor motor
The rotor is located outside the stator, with the stator enveloping the rotor. This structure features high torque and low speed, commonly used in industrial equipment and household appliances requiring heavy-duty applications.

Summary: The core difference between rotor motors lies in the relative position and structural form of the rotor and stator. Common types include squirrel cage, wound (including DC and doubly-fed), interior rotor, and exterior rotor motors, each suitable for different operational requirements.

Key words:

rotor motor,cage motor ,Wound motor,asynchronous motor,Wound rotor motor

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