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Any dynamometer or motor test system to recommend?

Jinku Hu
Prodigy 170 points
Other Parts Discussed in Thread: 2MTR-DYNO

We are trying to build an automatic test bench for our motor electronics with Instaspin inside. We want to test the motor control performance of start up, brake, overload, and other load or torque curve extracted from the practical motor application.

The motor we use has a rating torque of 0.4Nm with 2400 maximum rotation speed.

Hysteresis dynamometer seems a good candidate for automatic test bench because it could provide similar torque range at the low and high RPM.

Any recommendation for dynmometer or turn-key motor test system?

Thanks !~!

  • TI__Guru** 119670 points
    Jinku,
    I recently wrote an article on this topic for EDN
    http://www.edn.com/electronics-blogs/spin-cycle/4438022/Testing-your-motor-control-algorithms

    you can see if our 2MTR-DYNO set-up will work for you.

    The only other "small" dyno system I'm aware of is
    http://motorsolver.com/Motorsolver/About.html

    Everything else is very much customized with a DC motor with resistive brake/load, a hysteresis brake, or a fully controlled system from someone like Magtrol (which we use in our testing labs).
  • in reply to ChrisClearman
    Prodigy 170 points
    Hi Chris,
    What you post in EDN is quite helpful to make a budget test setup for BLDC motor control.
    You set the load motor speed to 0 and change Iq to generate different torque to the controlled motor. So it means it could only generate negative torque but not positive torque that could accelerate your controlled motor? The reason I ask is that we also want to simulate the "Ramp down" behaviour when your vehicle is driving in a slope.

    Magtrol provides a good solution. Thanks for this info, Chris.
  • in reply to Jinku Hu
    TI__Guru** 119670 points
    you can provide CW and CCW torque with the 2MTR-DYNO. I show that behavior in the result for Tests 3, 4, and 5 in the article.