Dear forum members,
I am trying to understand the electrical system
of my sailing yacht as I would like to install a power management system and some alternative sources of energy (solar, hydrogen) at a later stage.
So far I have put together a drawing of what I think represents the actual situation of the electrical system
by following cables
around the boat (see drawing attached). I hope this makes any sense, as I am not an electrician, I am not sure about the graphical representation of the wiring
In a nutshell, I can charge my batteries either from shore power
, a generator
, or the alternator
of my engine
. All inputs feed to a split diode charger
which is routed to the batteries. My charger
has a third output which I could potentially use to charge the genset battery
. At the moment the genset battery
is only charged by the genset (I assume). There also is a bow thruster connected to the service
batteries. I also have an inverter
which I havenít shown on the drawing.
- I am looking at two different power management devices: the Sterling Battery Management Controller PMP1 or the Victron Energy BMV-702. I understand the Sterling Controller needs to be in the + System whereas the Victron is in the Ė System and requires less setup. I would appreciate if you could share your thoughts on these devices or indicate any other units that you would recommend.
- Is it a good idea to connect the genset battery via the CB to the third split diode and further to the charger?
- I was looking at the watt&sea hydrogenerator which I would like to install at a later stage and contacted them for advice but they havenít replied at all. They have a converter-regulator which combines their hydrogen input and a solar input (20A max). Do you think it is a good idea to combine these inputs in one regulator, or would you keep the solar input separate on another regulator?
- Where does the output of the regulator(s) best connect to, having in mind I would like to install the power management devices?
- I created an electrical budget based on the consumers that I have on board (file attached). The currents are taken from the manuals. I would appreciate if you could review my assumptions and provide me your feedback. From what I understand of my budget I wonít have enough solar power at anchor with one 128W panel but unfortunately I donít have any more space on my dodger other than 110x140cm.
Many thanks to all of you for your support in advance!