Outer rotor motors and inner rotor motors are two common motor types. They have significant differences in structure, working principle and application.
An outer rotor motor is another type of motor in which the rotor portion is on the outside of the motor and the stator portion is on the inside. Outer rotor motors usually adopt the design of AC asynchronous motor or stepper motor. In an outer rotor motor, the stator usually consists of electromagnetic coils, while the rotor part is located outside the stator. The stator portion of an outer rotor motor remains stationary while the rotor portion rotates.
An inner rotor motor is a type of motor in which the rotor portion is located inside the motor and the stator portion is located outside. Inner-rotor motors usually adopt the design of DC motor or AC synchronous motor. In an inner rotor motor, the rotor usually consists of permanent magnets or electromagnetic coils, which are mounted on the stator. The rotor part of an inner rotor motor rotates while the stator part remains stationary.
Structurally, the biggest difference between an inner-rotor motor and an outer-rotor motor is the positional relationship between the rotor and the stator. This structural difference also leads to differences in their working principles and applications.
The rotor portion of an inner-rotor motor rotates, while the stator portion of an outer-rotor motor rotates. This difference leads to significant differences in electromagnetic field distribution, torque generation and mechanical structure design.
Inner-rotor motors usually have higher rotational speeds and smaller torques, and are suitable for applications that require high-speed rotation and smaller size, such as power tools, fans, compressors, etc. Outer rotor motors usually have larger torque and higher precision, and are suitable for applications that require larger torque and higher precision, such as machine tools, printing machines, medical equipment, etc.
Additionally, there are differences in maintenance and troubleshooting between internal and external rotor motors. Due to differences in construction, maintaining and repairing these two types of motors may require different techniques and tools.
In general, there are significant differences between outer rotor motors and inner rotor motors in terms of structure, working principle and application. Understanding these differences helps select the type of motor suitable for a specific application and provides guidance for engineering design and application.
Writer:Sharon
Post time: Apr-11-2024