Power in Flux
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Thread: New data on HPEVS site

              
   
   
  1. #71
    Seņor Member podolefsky's Avatar
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    Quote Originally Posted by liveforphysics View Post
    Series has a different relationship between loading and torque potential decay with increasing BEMF to limit phase currents, and alternative slope for phase current and torque to begin the curve.

    Think of induction motors as induction motors. Its worth taking the time to build the unique model in your mind of its characteristics.

    Yup, agree they are different. Just saying induction curves are more like series than PM. Just my physicist brain that sees a big difference between linear and non-linear, but sees two non-linear things as similar (but obviously not identical).
    - Noah Podolefsky -
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  2. #72
    Electric Warrior CaptainKlapton's Avatar
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    I was just looking at HPEVS' facebook page and found some pictures of their dyno setup.
    253963_262273400556951_535160341_n.jpg 296044_262273443890280_1123223501_n.jpg 549471_262273577223600_1299527813_n.jpg 546604_262273670556924_1328939700_n.jpg 564374_262273510556940_1215378084_n.jpg
    Looks to me like a bank of 24 flooded lead acid batteries was used for the tests. I did not expect the liquid cooling on the controllers though.
    "Never let schooling interfere with your education."
    -Mark Twain

  3. #73
    Seņor Member podolefsky's Avatar
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    Interesting, thanks for posting. Without good airflow, the controllers tend to overheat before the motors. Their continuous power dyno plots are keeping the motor at a fixed temperature 60 deg C above ambient, and at those power levels the controller would probably overheat without liquid cooling.
    - Noah Podolefsky -
    The GSX-E

  4. #74
    Member chipper6's Avatar
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    Their main reason for the bench was to decrease R&D time and the result is the much larger selection of motors. Especially the motors wound for the newer 144V controller.

    Keep an eye out for their new All Stainless steel, oil cooled motor line-up data

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