A new high-speed electric motor could help solve range woes of EVs

A new high-speed electric motor could help solve range woes of EVs

https://reddit.com/r/electricvehicles/comments/xhx8rv/a_new_highspeed_electric_motor_could_help_solve/
sankscan
https://interestingengineering.com/innovation/high-speed-motor-clock-100000-rpm


A new high-speed electric motor could help solve range woes of EVs



View Reddit by sankscanView Source

Read it Too  Tim Kiniskis of Stelantis will be on Autoline After Hours to discuss the Charger and Challenger EVs.

12 thoughts on “A new high-speed electric motor could help solve range woes of EVs

  1. >Researchers at the University of New South Wales Sydney have developed a new electric motor that can clock 100,000 revolutions per minute.
    >
    >….
    >
    >The researchers are confident that their motor can be quickly commercialized, bringing its advantages to the market sooner than we can anticipate.

    Ok so you built an electric motor that spins really fast. Is it affordable? Is it reliable? Can you mass manufacture it?

    For reference, Dyson has been selling products with a motor that can spin up to 125,000 RPM. Lucid Motor’s EVs have motors that spin up to 20,000 RPM. The fact of the matter is, motors can generally spin faster if the spinning part (rotor) is lighter and smaller diameter. Centripetal forces increase with speed squared.

  2. For some reason the title seems to promise more than it delivers. The press release merely says,

    “Most importantly, the motor is able to produce a very high power density, which is beneficial for EVs in reducing overall weight and therefore increased range for any given charge,”

    which is not problematic, but “help solve range woes” implies that it could have a major impact on overall efficiency, which simply isn’t possible. Even a massless, 100% efficient motor would not have a major impact on overall efficiency and would not by itself solve “range woes”.

  3. I put 1500 lbs in my Rivian and drive for an hour and it’ll be MAYBE 1-5% less efficient depending on the drag created by the container. Weight matters, but only in the 1000s of lbs range, and it’s impact is tiny.

  4. 7KW per kilogram? So the ideal motor for an EV, as they described it, at 200KW and 18,000 rpm would weigh 1,400 kg? What does the Plaid motor weigh? I think it spins at 20,000 rpm, so what is the advantage of this motor?

Comments are closed.