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Previous Proposed Changes to Pre-Charge:

Pre-Charge changes were previously researched, but not that much progress was done

Link:

Changes for MCI Rev 2.0

Main changes summarized:

  • Remove DC-DC

  • Replace HV FET with solid-state relays

  • Add Hall Effect Current Sensor

New Suggestions

  • Motor controller capacitors are currently charged with a constant voltage source and series resistor. This is always 50% efficient. For a challenger vehicle, it might be better to have a switching circuit (buck topology) to charge with constant current (which would also be faster).

  • Keep to 12V by removing DC DC inversion

  • Add hall effect sensor

  • Make simpler by removing irrelevant portions (e.g. fan control and thermistor may have been exclusive to MOV since shorts less of an issue?)

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