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An Overview of Axial Flux Motor & Axial Flux Motor Magnet

A motor is a machine that converts the energy of the motor into mechanical energy. Its working principle is based on the electromagnetic interaction of the magnetic field generated by the coil and magnet contained in the structure. It can be divided into two types: axial flux motor and radial flux motor, according to the direction of the magnetic field. The world's first motor, invented by Michael Faraday in 1821, belongs to the axial flux type. Though the axial flux motor came out earlier, its further development was limited by the material and technological level at that time. Conversely, the radial flux motor which was invented by Davenport in 1834 took the lead in development and became known as the simple motor. Comparison: Axial Flux motor & Radial Flux Motor Comparison: Axial Flux motor & Radial Flux Motor

Comparison of Axial Flux motor & Radial Flux Motor

The air gap of the axial flux motor is planar, and its air gap magnetic field distribution along the axial direction, that is, the air gap magnetic field is perpendicular to the air gap plane. The current development trend of the motor is high speed, low weight, and high efficiency, and the axial flux motor is regarded again under this circumstance.

Two Types of Axial Flux Motor Magnets

a. Axial flux motor magnet with skewed fan shape

For the slotted motor, the cogging torque cannot be avoided due to the interaction between the permanent magnet and the stator tooth, hence leading to torque ripple, vibration, and noise. The cogging torque of the axial flux motor will be suppressed after changing the traditional fan shape axial flux motor magnet into a skewed fan shape.

b. Laminated type axial flux motor magnet

Axial flux motor is also suffering from eddy current losses, and its work efficiency will be also affected by the high-temperature demagnetization. The magnet segmentation technique is an advisable choice to decrease the eddy current losses of axial flux motor magnets. It should be noted that the effects of horizontal segmentation will be much better than vertical segmentation.

Two Types of Axial Flux Motor Magnets Two Types of Axial Flux Motor Magnets

What are the Advantages of an Axial Flux Motor?

  • To sum up, the axial flux motor has the following advantages:

* Compact structure, especially short axial sizes. * Small volume. * Low weight. * High torque density. * High power density. * Small end-winding. * Excellent cooling performance.

What are the Applications of Axial Flux Motor?

Based on the above advantages, the axial flux motor is perfect for high torque density and space compact applications. Most people believe that the high power density only depends on high speed, and overlook the influence of torque density. The mere pursuit of high speed will lead the short service time and noise. The core of the high-speed motor is the enhancement of torque density, and axial flux motor is a typical solution among them.

Applications of Axial Flux Motor Applications of Axial Flux Motor

Thank you for reading our article and we hope it can help you to know more about Axial Flux Motor & Axial Flux Motor Magnets. If you are interested in strong magnets used in Axial Flux Motor, we would like to recommend you to visit Stanford Magnets for more information. As a leading magnet supplier across the world, Stanford Magnets has been involved in R&D, manufacturing, and sales of various magnets since the 1990s. It provides customers with high-quality rare earth permanent magnetic products such as neodymium magnets, and other non-rare earth permanent magnets at a very competitive price.

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About the author

Cathy Marchio

Cathy Marchio is an expert at Stanford Magnets, where she shares her deep knowledge of magnets like Neodymium and Samarium Cobalt. With a background in materials science, Cathy writes articles and guides that make complex topics easier to understand. She helps people learn about magnets and their uses in different industries, making her a key part of the company's success.

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