Personally what I think is needed is a distributed/networked control system for the charging sources. Perhaps a lofty goal, but I think that's what it takes to really make it all work properly.
For argument's sake, here's a rough outline of such a system:
and voltage sense device at the battery
bank, measuring current
in/out of the bank, and providing a single
, common voltage measurement for everyone else to use. Connect this gadget to the ship's N2K bus so it is providing this data for anyone and everyone. I believe all the standards exist today for such a device, in fact I think the devices might already exist in suitable form.
- Connect all charge controllers to the same N2K network, and have them use the provided battery
reading to control their charge operation.
- By making the actual battery current available to the chargers, they can now correctly end their charge cycle without being tricked by load currents. They can see actual battery return current.
- Charge set points can be sent to all chargers so they are all the same. And by using the same voltage measurement source, they won't be playing king-of-the-hill any more, but rather all be pulling hard or backing off as needed.
Easy to say, but a little harder to do. And do you do it using open standards, or attempt to corner the market yourself?