Tesla Equips Model S Plaid with Innovative New Electric Motor with Carbon-Wrapped Rotor

Photos: Tesla

Tesla has officially unveiled the Model S Plaid, which is equipped with several eye-popping innovations. The new exterior, interior, infotainment system, battery architecture, and motor combine to create the world's fastest production car, ideal even for families.

First introduced nine years ago, the Model S has received an update and a new version: Plaid. Last night in Fremont, the ceremony of delivering the first cars to owners took place, and the CEO of the company, Elon Musk, presented the main technical elements of the car. While some of the impressive changes were already known, the details of the innovative new motor presented very interesting news.

The new electric motor is the first of its kind to be in production and features carbon sleeve rotors. In order to get the carbon wrapped over the rotor, there are some very tough obstacles to overcome. Musk explained that carbon and copper have different rates of thermal expansion and in order to achieve the desired result, the rotor must be wrapped at an extremely high intensity, which is difficult to do.

“As far as we know, this is the first time there has been a production electric motor with a carbon-coated rotor. This is an extremely difficult thing, because carbon and copper have very different rates of thermal expansion. To have a carbon-coated rotor, you need to wrap it with extremely high intensity and this is extremely difficult to do."

In order to make such rotors, Tesla designed a new production machine. The result is a highly efficient small engine that you can even pick up in your hands, but can accelerate a two-ton car to 60 mph in 2 seconds.

Essentially, the company's engineers have created a motor with an electromagnetic field, which is super efficient and has a tight gap even at super-high revolutions per minute (RPM), and is single-speed from 0 to 200 miles per hour. So, because the RPM for this motor is totally insane, the centrifugal force wants to expand the rotor—but the carbon overlap holds it all together.

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