Permanent magnets are used in MRI machines, portable electronic devices, hysteresis clutches, accelerometers, and — last but not least —permanent-magnet rotary and linear motors.
With the emergence of the permanent magnet motor, however, these vehicles take the important step away from fantasy concept cars and into the reality of consumer-accessible vehicles. Unlike a conventional motor, a permanent magnet DC motor does not have any field windings.
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A permanent magnet motor is a type of brushless electric motor that uses permanent magnets rather than winding in the field. This type of motor is used in the Tesla Model 3, the Chevy Bolt, and the Chevy Volt.
A “PMSM”, which stands for “permanent magnet synchronous motor”, relies on magnets to turn the rotor, which spins at the same speed as the PMSM’s internal rotating magnetic field. There are a few key differences between AC induction Motors and Permanent Magnet Synchronous Motors. Permanent magnet motors MUST operate with a drive.
The permanent magnet motor range extends the effective nominal speed range of the rugged industry workhorses down to 100 – 850 r/min. The motors can simplify drive systems by effectively eliminating the need of speed reduction devices.
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A permanent magnet motor is a type of electric motor. All electric motors rely on the magnetic interaction between the stator frame (the fixed housing of the motor) and the armature or rotor (the part of the motor that moves).
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A permanent magnet motor would not produce energy and would not be a perpetual motion machine. Instead, it would simply use the electromagnetic energy delivered by the angular momentum of the electron in the form of magnetic forces.
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