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Diodes Capacitors and Batteries - Regenerative current

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Gadget999, Jan 29, 2020.

  1. Gadget999

    Gadget999 Well-Known Member

    Joined:
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    My Motion Simulator:
    2DOF, DC motor, Arduino, 6DOF
    I understand my DC motors will generate electricity when they are working with gravity

    this will create some back voltages

    what is the best strategy to stop this being a problem ? I want to implement a solution before i fry something by accident

    it seems to me the battery is working like a big capacitor and the power supply feeding it will eventually overcharge it

    do you have to have to have a diode on each wire to the motor ?

    would a snubber be a good solution ?

    are the capacitors dangerous ? they could end up charged with a lot of electricity !
    Gadget999, Jan 29, 2020
    #1
  2. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    AC motor, Motion platform
    Just ensure your Regulated power supply is set so that it does not cause the battery to overcharging (12 VDC) and your good to go.
    SeatTime, Jan 29, 2020
    #2
  3. Gadget999

    Gadget999 Well-Known Member

    Joined:
    Dec 27, 2015
    Messages:
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    Location:
    London
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    11,610Coins
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    +458 / 9 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino, 6DOF
    Wow - i did not realise it was that simple

    i have some server motor drivers that are 12v 70 amps

    i was going to use one on each battery - 24v total

    i assume the power supplies will increase current when needed and only then ?
    Last edited: Jan 29, 2020
    Gadget999, Jan 29, 2020
    #3