If a forum already exists for this, please let me know. Don't mean to repeat questions or concerns.
Concern: a brushless, permanent magnet wheel (hub) motor attached to free wheel rear axle.
Battery fully charged to begin with.
From the top of a long hill (mountain like peak), the car goes downhill by gravity WITH THE THROTTLE AT ZERO
ACCELERATION and reaches a speed (say) of 70 mph. -
The motor, then, is acting like a generator (for example, as in regenerative braking). -
BUT the batteries are FULL already. They will not accept any more current charge.
The motor (generator) will still be generating considerable voltage (EMF) due to the relative
motion of the coils and the permanent magnet. They are permanently attached between the turning wheels and
the axle with no clutch, etc. -
How would a "controller" handle this excessive voltage (emf) that is generated? -
Would the voltage build up enough to cause arcing in the motor or breakdown of the
insulation on the wires? - Would the motor "burn up" under these conditions.
Am i really stupid and missing something here? -