Hi and
to the forum.
The truthful answer is I don't know what happens when the generated voltage approaches the maximum charge voltage of the battery, presumably the "High voltage protection value (V)" setting in the controller will cut the regen when the maximum set voltage is reached, but I don't know if this actually happens by gradually decreasing the current, or whether it simply cuts out completely until the voltage falls below the "High voltage protection exit value (V)"
I have no direct experience with the VEC-200 controller, but the 30A vector controllers fitted to the hub motors definitely reduce the current gradually to ensure that the voltage stays above the "the Low voltage protection value (V)" setting to prevent the battery from being overdischarged.
If the VEC-200 does the same under power at low voltage setting, then I would expect it to work in a similar fashion under regen when approaching the High voltage setting to prevent the battery from being overcharged, but that doesn't necessarily mean that it will.
I don't suppose many users of the VEC-200 controller will have experienced regen voltage approaching the maximum battery charging voltage, as most applications will draw at least 90% more from the battery than the regen will put back.
Presumably, if the regen doesn't control the maximum voltage it then the battery's
BMS will step in.
You can try emailing GoldenMotor in China
(sales@goldenmotor.com) and see if they can give you a definitive answer.
Alan
