WMarine10 – Technical Manual
Rev. 1.0
28-12-2011
9
General description
WMarine10 is a photovoltaic charge regulator for leaden electrochemical batteries either sealed (SEAL) or
flooded lead acid (FLOOD). In fig. 1 there is a scheme principle of WMarine10.
V
PAN
1
2
3
I
PAN
I
charge
MICRO -
CONTROLLER
Buck-bust
converter
V
BATT
I
LOAD
Fig. 1 Block diagram
4- Charge circuit: it adapts V
PAN
and I
PAN
(respectively voltage and current of the PV module) so to search the
condition in which the power that is given by the PV module is maximum, thus realizing the MPPT
(
Maximum Power Point Tracking
). In addition, it manages the battery charge by reducing the current sent
towards the battery when the battery V
BATT
exceeds its charge voltage (V
ch
).
5- Circuit for load control: it turns on/off the load according to the program set by the user and it provides to
load detachment in case of discharged battery, overload or short-circuit on the load.
6- Microprocessor: it controls the whole circuit, it measures currents and voltages of PV module, battery and
load and it shows them on the display.
