Hi,
I build up to now two systems with Wind&Solar priority on two different ships. In both occasions the dedicate ignore AC is set on. I add a picture of the setting of 1 of the systems.
In both systems the “charge to 100%” button in Remote Console does only work as long the condition of NOT ignoring AC is valid (so a load more than 1001W). The charging also stops when the output power of the Multi goes below the set load
Is there a solution for this? It might be handy to be able to charge 100% before sailing, without the need of a lot of power consumption. Even sometime it is handy to switch the charging remote before sailing without being on the ship.
Kind Regards Edward
Why set the “ignore ac in” in this situation? If the charge from solar float voltage is set slightly higher than the float voltage set in the multiplus, then that would take priority, same for the wind. AC in would then only be used to maintain the system overnight (if available), when there is insufficient wind. This way the batteries would be maintained close to 100% at all times, and not need a special charge before sailing…
Goodmorning ,
You mean the setting in the MPPT charger itself?
I understood that AC is always taken from the shore with W&S priority.
The ships have almost no DC consumers, only navigation stuf. When they are docked, all AC is needed taken from the shore, instead of using the solar energy. Using AC ignore makes it possible to use the solar energy for most of the needed AC energy.
When leaving in the morning it is sometimes nice to have fully charged batteries (especially with bad weather).
Hi Edward,
My Wife & I lived on a sailing yacht for 11 years,so I have a pretty good idea,
The Idea is that the MPPT charger having a slightly higher set point than the Multiplus will take the priority in charging the battery. by careful setting of the two float voltages (MPPT and Multi) then you can set this up so that the multi will only maintain the battery, whilst the MPPT resets to bulk charge every day.
If you are in dock, then the multi won’t charge the battery (assuming it’s in float mode) provided the battery voltage is higher than the float voltage set. If the charger is power-cycled then it will restart in Bulk mode (Abs voltage). If the Multi is left on, then it will remain in float until the voltage drops below the re-bulk voltage setting.If the battery voltage remains higher than this setting overnight, then all power will be drawn from Solar, assuming that is available.
Hello Mike,
I was sailing for a few days, so had no opportunity to answer.
I think I understand what you mean and gone give it a try.
Kind Regards Edward
