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Old 09-03-2021, 07:18 AM
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ron_van_sommeren
homo ludens modelisticus
 
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Join Date: Jul 2005
Location: near Nijmegen, Nederland
Posts: 1,343
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If you cannot but extend, extend the motorwires, not the batterywires, and keep controller(s) close to battery(s).
No need for extra input capacitors, resulting in more space, less costs and less points of failure

Too long wires batteryside will kill ESC over time: precautions, solutions & workarounds - RCG
Contents
  • Two problems
    • Voltage spikes higher than battery voltage: transistor / powerFET / die breakdown.
    • Current through input capacitors too high: caps overheating/popping/exploding.
    • Nonsense Ron, I never had problems with long battery wires.
  • Example: four costly controllers consecutively cremated
  • Solution I: simply lengthen the motor wires instead
  • Solution II: add extra capacitors, rules of thumb
    Calculation spreadsheet
  • Capacitor type and polarity/orientation!
  • How & where (not) to add extra capacitors
    All capacitors as close to or on controller, do not distribute along batterywires.
  • DIY capacitor pack pictures
  • Capacitor & pack suppliers
  • Expert/manufacturer opinions & their rules of thumb
    They all say the same ... noise_reduction_101, switching_power_supply_design_101.
  • Cause, explanation, water hammer/knock analogy&
    , theory
    References
  • Measurements & scope traces

diy motor tips&tricksCumulus MFC •[/SIZE]



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