Dear VE Community,
I am seeking your expert advice on a custom project that I am currently designing for a trailer application. I would appreciate your feedback on whether the design meets the requirements or if I need to make any changes.
Here are the major specifications of the system:
Generation
- The system must be able to receive power from both one AC source (such as grid or diesel generator) and DC source (such as solar panels).
- The system will primarily operate in off-grid mode, with "Storage" batteries used as the main power supply.
Loads
- The system includes two "load" batteries rated at 24V and 22Ah each, which should receive a constant current between 10A and 20A to be replenished.
- Additionally, some DC loads and AC loads needs to be fed with power. These loads are on demand and not constant baseline.
Please note that the "load" batteries are not intended to reverse energy back to the system. Instead, they will be discharged elsewhere. Think of the system as a continuous battery charger on wheels!
My current preferred design uses a Victron Multiplus II 24/3000 combined with 2x Pylontech UP2500 and a Lynx Distributor. Two DC-DC 24/24 chargers would be installed between the Lynx Distributor and the "load" batteries to charge them. According to my calculations, I should be able to replenish the "load" batteries around 4-5 times each.
I have attached a high-level schematic of the system for reference:
I would greatly appreciate your input on the feasibility of this design to fulfill its intended purpose and any potential improvements you may suggest. Any suggestions and tips before I move forward with more detailed design would be invaluable.
Thank you in advance for your assistance!
