In today's motor market, internal rotor motors and external rotor motors are the two most common types. They have their own characteristics and are widely used in various fields. However, many people are often confused when choosing a motor and don't know which type of motor is more suitable for their needs, this article will take you to understand these two types of motors in depth.
The difference between an inner rotor motor and an outer rotor motor.
1. Rotor position:
l Internal rotor motor: In an internal rotor motor, the rotor (i.e., the rotating part) is located inside the motor, while the stator (the immovable part) is located outside. Examples of internal rotor motors include DC motors and AC synchronous motors.
l External rotor motor: In an external rotor motor, the rotor is located on the outside of the motor, while the stator is located on the inside. A typical example of an external rotor motor is an asynchronous motor, also known as an AC induction motor.
2. Structure and shape:
l Internal rotor motor: The internal rotor motor is usually more compact, and the rotor is wrapped inside the motor, and the shape is relatively small.
l External rotor motor: The rotor part of the external rotor motor is exposed, and the overall shape is relatively large.
3. Exercise mode:
l Internal rotor motor: The rotor of the internal rotor motor rotates in the electromagnetic field, producing mechanical motion. These motors typically have higher rotational speeds and less rotor inertia.
l External rotor motor: The rotor of the external rotor motor rotates in the electromagnetic field, which also produces mechanical motion. Due to the relatively large rotor, external rotor motors usually have higher torque and greater rotor inertia.
How to choose the right motor type?
When choosing the right motor type, there are several factors to consider:
1. Application scenario: Select the appropriate motor type according to the specific application scenario. Internal rotor motors: Commonly used in applications that require high speed, high precision, and compact structure, such as electronic equipment and some precision instruments. External rotor motors: Commonly used in applications that require high torque and high power, such as electric locomotives, large wind turbines, and some industrial drive applications.
2. Power demand: consider the power demand of the motor. If high power output or continuous operation is required, an outrunner motor may be more suitable; If the power requirement is smaller, then an internal rotor motor may be more suitable.
German EBM EC motor.
For decades, EBM has been a provider of compact industrial drive systems, whether in a flexible modular design or in customised complex systems. EBM offers a complete range of drive system solutions, including AC, DC and Greentech EC motors in addition to gearboxes, sensors and control electronics.
1. EC external rotor motor.
For a long time, EBM external rotor motors have been the preferred choice of professionals, as they are quiet, powerful and constantly improving, which has made us famous all over the world. Its excellent integration capabilities allow it to form customized drive solutions with gearboxes, sensors and controllers; It can also be used as a high-efficiency heart for fans and pumps and can be used alone in a variety of applications.
2. EC internal rotor motor.
EBM's compact single-phase EC internal rotor motors, optionally integrated or externally controlled with electronics, are easy to operate and have a long service life. They have a power range of 10 70W.
In short, German EBM EC motors have their own merits, and which motor to choose depends on your specific needs and application scenarios. By understanding the characteristics, pros and cons and range of applications of both motors, you will be able to make the best choice to ensure that your equipment or application gets the right amount of power and performance.