The Tesla Plaid electric motor has several innovations. Elon says the Plaid’s carbon-wrapped motor is the most advanced motor on the planet outside of a lab. The motor is able to go to over 20000 RPM.
Elon Musk described the carbon sleeve. A carbon sleeve must put copper rotor in compression or it loosens at low temp due to differential thermal expansion. Fiber is wound over rotor at high tension load. A new machine to do this was made by Tesla Automation.
Preload is also helpful for maintaining precise gap to stator.
The main advantage of this is a much stronger EM field compared with a rotor that is held together by metal (usually high-strength steel).
The other advantage is that rotor can go to higher RPM, as carbon sleeve (mostly) stops copper rotor from expanding due to radial acceleration.
Fiber is wound over rotor at high tension load. Machine to do this was made by Tesla Automation.
Carbon sleeve must put copper rotor in compression or it loosens at low temp due to differential thermal expansion.
Preload is also helpful for maintaining precise gap to stator.
— Elon Musk, the 2nd (@elonmusk) June 13, 2021
Main advantage of this is a much stronger EM field compared with a rotor that is held together by metal (usually high strength steel).
Other advantage is that rotor can go to higher RPM, as carbon sleeve (mostly) stops copper rotor from expanding due to radial acceleration.
— Elon Musk, the 2nd (@elonmusk) June 13, 2021
Magnetic strength of Neodymium magnets decreases at 80°C & magnetism can be permanently lost if magnets are left for an extended period of time at a temperature above 80°C
Carbon fiber matrix is generally cured at a temperature between 100 and 130°C
Post-assembly magnetization? pic.twitter.com/yHOVBkxysu
— ALEX
(@ajtourville) June 13, 2021
SOURCES- Elon Musk
Written by Brian Wang, Nextbigfuture.com (Brian has shares of Tesla)
Brian Wang is a Futurist Thought Leader and a popular Science blogger with 1 million readers per month. His blog Nextbigfuture.com is ranked #1 Science News Blog. It covers many disruptive technology and trends including Space, Robotics, Artificial Intelligence, Medicine, Anti-aging Biotechnology, and Nanotechnology.
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