Applications of neodymium magnets in electric motors

Today, it is very common applications of neodymium magnets in electric motors has increased considerably, especially due to the growing demand that exists with electric cars in the global automotive market.

Neodymium magnets are permanent magnets produced from a composition of neodymium, iron and boron. The material remains the strongest type of rare earth permanent magnets currently available.

In fact, in the past it was safe to find neodymium magnets in products such as hard drives, microphones, speakers, headphones and magnetic bearings, among others, but now, neodymium magnets in electric motors are even more common than they seem.

Electric motors and revolutionary new technologies are at the forefront and magnets have a vital role to play in the future of the world's industry and transport. Neodymium magnets act as the stator or part of a traditional electric motor that does not move. The rotors, the moving part, would be a moving electromagnetic coupling that pulls the pods along the inside of the tube.

Neodymium magnets in the automotive industry

In all cars and in future designs, the amount of electric motors and solenoids is well in double figures. They are found, for example, in:

  • Electric motors for windows.

  • Electric motors for windscreen wipers.

  • Door closing systems.

One of the most important components in electric motors are neodymium magnets. The magnet is usually the static part of the motor and provides the rejection power to create a circular or linear motion.

Neodymium magnets in electric motors have more advantages than other types of magnets, especially in high performance motors or where reducing size is a crucial factor. Bearing in mind that all new technologies aim at reducing the overall size of the product, it is likely that these engines will soon take over the whole market.

Neodymium magnets are increasingly used in the automotive industry, and became the preferred option for designing new magnetic applications for this sector.

New neodymium magnets in electric motors

So neodymium magnets are used in various types of motors, such as the high-performance motors found in electric vehicles, the use of which has increased rapidly. The automotive world has recently developed a new type of neodymium magnet, which uses significantly less neodymium and can be used in high temperature conditions.

This new type of magnet is useful for expanding the use of engines in various areas such as automobiles and robotics, as well as for maintaining a balance between supply and demand of valuable rare earth resources. The automotive industry, however, is working to further improve performance and evaluate application in products while accelerating the development of mass production technologies, with the goal of achieving adoption in all engines used for various applications, including automobiles and robotics.

Why are neodymium magnets used in electric motors?

In electric motors, neodymium magnets perform better when the motors are smaller and lighter. From the engine that spins a DVD disc to the wheels of a hybrid car, neodymium magnets are used throughout the car.

A neodymium magnet with a low degree of coercivity may begin to lose strength if heated to more than 80°C. High coercitivity neodymium magnets have been developed to operate at temperatures up to 220°C, with little irreversible loss. The need for a low temperature coefficient in neodymium magnet applications has led to the development of several grades to meet specific operational requirements.

If you want to know the uses of neodymium magnets in a motor, stay informed with the magnet world articles that IMA offers you.

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