Tesla Model 3’s comes with an alternative motor technology that Tesla calls a permanent magnet synchronous reluctance motor. These motors differ from a conventional PM (permanent magnet) motor in the design of the rotor.A synchronous reluctance motor has a series of electromagnets around the stator, but the rotor doesn’t have any windings or permanent magnets.
The engineers of Tesla motor’s shocked everyone when they abandoned the versatile induction motor in Model 3 cars. They used a totally different motor called IPM-SynRM. Let’s understand why the Tesla engineers made this crucial design change. Watch the video from Learn Engineering for more info:
THe Synchronous reluctance motor instead the rotor contains veins of a magnetic material interspersed with non-magnetic material, arranged so that it has a preferred orientation in the magnetic field created by the stator.
To turn the rotor, the motor activates electromagnets in sequence, creating a rotating magnetic field that pulls the rotor along. The main advantage of the SynRM relies on the absence of the rotor cage losses or PM losses, allowing a continuous torque higher than the torque of an Induction Motor of the same size.
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