Featured Next-gen spoked magnet design spins up cheaper, lighter, more powerful electric motor

Discussion in 'Prius, Hybrid, EV and Alt-Fuel News' started by Trollbait, Nov 21, 2018.

  1. Trollbait

    Trollbait It's a D&D thing

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    Next-gen spoked magnet design spins up cheaper, lighter, more powerful electric motor
    [​IMG]
    tl;dr
    When magnets get hot, the performance of an electric motor drops, and current motor design used in cars makes directly cooling them hard to impossible. So you need more expensive magnets that can handle the heat, or use a bigger, heavier motor for a given power output.

    The spoke arrangement of magnets(above, black the magnets) makes direct cooling of the magnets possible. The arrangement also means less magnet material is is needed for the same output; 25% less.

    Not a new concept, but this company, Equipmake, has a cheaper way of making them. Their motors will appear in the Ariel Hipercar and an electric bus, both planned for 2020.
     
    #1 Trollbait, Nov 21, 2018
    Leadfoot J. McCoalroller likes this.
  2. hill

    hill High Fiber Member

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    I hope these suckers aren't like so many touting vapor-ware / cheap no loss /charge in 5 minutes / 400 mile battery tech, or 95% efficient PV solar.
     
    #2 hill, Nov 21, 2018
  3. Trollbait

    Trollbait It's a D&D thing

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    They are already going into two vehicles.

    GE and others knew about the advantages of this spoke design. It was just easier to come up with a way to make the standard design cheaper. The article is worth the read.
     
    #3 Trollbait, Nov 21, 2018
  4. PriusCamper

    PriusCamper Senior Member

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    If they were able to make the magnets in a tear drop shaped they could boost performance even more, increase cooling, and decrease amount of material used. Of course durability, as well as cost of tear drop shaped magnets is prohibitive, at least for the moment.
     
    #4 PriusCamper, Nov 21, 2018
  5. bwilson4web

    bwilson4web BMW i3 and Model 3

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    The article is a little light on technical details:
    • Magnetic flux lines and intensity
    • Mechanical stress a there is no description of stress on the relatively low stress magnets
    It takes more technical details than an advocacy articles to pique my curiosity.

    Bob Wilson
     
    #5 bwilson4web, Nov 21, 2018
  6. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    Teardrop Magnets is the name of my electro-rhumba joy division tribute band
     
    #6 Leadfoot J. McCoalroller, Nov 21, 2018
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  7. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Perhaps 'sweeter than all the roses. Covered all over from head to foot with sweet violets."

    Bob Wilson
     
    #7 bwilson4web, Nov 21, 2018
  8. PriusCamper

    PriusCamper Senior Member

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    Yes, I've learned the hard way that paisley really is a form of advanced technology...
     
    #8 PriusCamper, Nov 21, 2018
  9. El Dobro

    El Dobro A Member

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    #9 El Dobro, Nov 22, 2018
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