Why is there no magnet on the rotor of the washing machine motor?

Just in the Baidu statistics to see the website keyword search source, see a netizen put forward the washing machine motor rotor why there is no magnet of this problem, the following magnet supplier Courage xiaofu to briefly introduce you.

The absence of visible magnets on the rotor of a washing machine motor is primarily related to the type of motor used and does not imply that all washing machine motors lack magnets.

The absence of magnets on the rotor is most common in traditional washing machines, which typically employ AC induction motors. These motors feature a squirrel-cage rotor constructed from aluminum or copper bars connected to end rings. They generate torque by inducing current in the rotor through the stator's rotating magnetic field, eliminating the need for magnets. Consequently, no permanent magnet materials are visible when the rotor is disassembled.

Additionally, some washing machines employ excitation-type motor structures. In these motors, the magnetic field is generated by energized windings rather than magnetic flux provided by magnets. Neither the rotor nor the stator incorporates permanent magnets, resulting in a structure that also appears “magnet-free.”

Furthermore, inverter washing machines are not synonymous with permanent magnet motors. While many high-end inverter models now employ permanent magnet synchronous motors, some still utilize inverter-controlled asynchronous motors. In such cases, even with inverter drive, the rotor still requires no magnets.

The accompanying picture shows an injection molded neodymium rare earth magnetic ring

The above explains why there are no magnets on the rotor of a washing machine motor. Magnets are used in many other parts of a washing machine, such as the door lock, water level sensor, motor position sensor, drain pump, and more. As a magnet manufacturer, our company can provide you with the permanent magnets you require.

Learn more about magnets: https://www.couragemagnet.com/magnet-faqs/

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