Connect with us

12V 200A Synchronous PWM DC Motor Controller

Discussion in 'Sensors and Actuators' started by bbrc679, Jun 22, 2015.

Scroll to continue with content
  1. bbrc679

    bbrc679

    5
    0
    Jun 22, 2015
    Can anyone help me fundamentally configure a synchronous PWM DC motor controller? I am trying to reverse engineer a missing component. The first component is a variable 40A PWM that used to be connected to a "box" which I suspect was a fixed PWM. I need to achieve 12V 200A peak for about 30 seconds. (If you must know, it is for a gyrocopter rotor blade pre-rotator...)
     
  2. Minder

    Minder

    2,948
    623
    Apr 24, 2015
    Do you mean build (configure) a 200amp PWM controller, what is the nature of the motor, 3ph synchronous or DC brushed or BLDC?
    M.
     
  3. bbrc679

    bbrc679

    5
    0
    Jun 22, 2015
    It is a heavy duty 12V auto starter motor.
     
  4. Minder

    Minder

    2,948
    623
    Apr 24, 2015
    Is it PM field or wound field?
    Older and larger automotive starter motors are series/wound field and operate in a runaway condition and require a load at all times.
    M.
     
  5. bbrc679

    bbrc679

    5
    0
    Jun 22, 2015
    I will have to check.
     
  6. bbrc679

    bbrc679

    5
    0
    Jun 22, 2015
    BLDC. I can find a 200A PWM, but I was curious how linking 2 in synchronous mode works.
     
  7. Minder

    Minder

    2,948
    623
    Apr 24, 2015
    I would never have expected a starter motor to be BLDC adding the cost for a commutation circuit.
    By synchronous, I assume each to be in syncronism with each other?
    M.
     
  8. bbrc679

    bbrc679

    5
    0
    Jun 22, 2015
    That is correct.
     
  9. Minder

    Minder

    2,948
    623
    Apr 24, 2015
    Probabally more details have to be known about any present controller, I would think that essentially you need feed back of some kind on both units, and either have one master and slave or use a μp to synchronize each to a set rpm.
    M.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-