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Fumesucker

(45,851 posts)

29. The motor in the Tesla Roadster does not use permanent magnets..

Fri Dec 30, 2011, 11:57 AM

Dec 2011

It's actually an AC induction motor where the magnetic field in the rotor is induced by the rotating magnetic field created by the coils in the stator.

http://www.teslamotors.com/roadster/technology/motor

Electric motors come in many varieties, each with a different approach to creating mechanical force (torque) from the simple interaction of two magnetic fields. The Tesla Roadster uses a three-phase Alternating Current (AC) Induction motor. The AC Induction motor was first patented by Nikola Tesla in 1888. AC Induction motors are widely used in industry for their reliability, simplicity, and efficiency.

The Roadster motor has two primary components: a rotor and a stator. The rotor is a shaft of steel with copper bars running through it. It rotates and, in doing so, turns the wheels. The stationary stator surrounds, but does not touch, the rotor. The stator has two functions: it creates a rotating magnetic field and it induces a current in the rotor. The current creates a second magnetic field in the rotor that chases the rotating stator field. The end result is torque. Some motors use permanent magnets, but not the Roadster motor -- the magnetic field is created completely from electricity.

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Ah how far technology advances... [View all] nadinbrzezinski Dec 2011 OP

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I am never disappointed as to what one can learn here nadinbrzezinski Dec 2011 #22

Well it's about time! Hassin Bin Sober Dec 2011 #23

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Nothing quite this revolutionary at the show nadinbrzezinski Dec 2011 #7

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With the ammount of computer controls nadinbrzezinski Dec 2011 #13

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Not quite nadinbrzezinski Dec 2011 #33

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So I am baffled by your use of the term nadinbrzezinski Dec 2011 #41

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In the modern day nadinbrzezinski Dec 2011 #12

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The motor in the Tesla Roadster does not use permanent magnets.. Fumesucker Dec 2011 #29

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Hubby took a photo of the dash by the way nadinbrzezinski Dec 2011 #44

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