Tasks of the solar system (peninsula system)

May 31 2023, by Sally Zhuang, 2 min reading time

- ensure complete self-sufficiency of the 2-family house
- electric car charging from April to October
- drinking water heating (300 liters)
- completely manual control possible without internet (in case of blackout)

Parts list (not complete) of the installed devices:

• 11 x charge controller EPever 10420 AN
• 11 x MT 50 Display
• 4 x Powerqueen LiFePo4 12.8V 410Ah (21kwh)
• 4 x Powerqueen LiFePo4 12.8V 240 Ah (12kwh)
• 10x Sunpower 12V lead gel battery 270Ah (32.4kwh > 16kwh usable)
• 5x Einhell battery charger CE-BC 30
• 5x LiFePo4 chargers Powerqueen (40A)
• 1x Briggs & Station P4500 emergency generator (4.5/3.7KW continuous output)
• 23x 415W Trina Vertex solar modules (13kwp)
• 3 module fields (1x south orientation, 1x southeast orientation, 1x south west orientation) for maximum yield
• 3x Giandel 4kw / 12V/220V inverter

Structure of the battery banks:

12V in parallel connection
Advantages: Individual monitoring of the individual batteries possible, required technology very cheap

Function of the battery banks:

12V lead gel battery bank supplies the house, drinking water storage and is additionally supplied by LiFePo4 battery banks when required
(bad weather, high energy requirements)

Why? > Lead-gel battery bank is designed for high peak current
LiFePo4 battery banks can be switched on directly (manually) using sufficiently dimensioned cables
(Attention! only possible if lead-gel battery at 80% charge level (LiFePo4 resting voltage 13.3 > Lead gel 12.7V)

Home supply:

3 circuits in 3 phase operation via mains power, each with 3 emergency switches for solar operation (solar operation only via luminous flux > Attention > Restrictions when using an electric stove, for example)

Attention: The system is not as 0 feed-in or feed-in system designed! The supply network must always be switched from or above 0 position!

E-car charging:

A separate inverter + 21 kWh battery is used for the electric car (surplus energy)

Drinking water storage:

The same system is used for the drinking water storage (optional summer solution) as for the electric car (surplus energy)

Winter operation and possible blackout

The system can be fully charged in winter via the generator and the chargers indirectly with 3.5KW in 10-12 hours and ensures the supply of the house without restrictions for at least 24 hours

With 4x60l petrol cans, self-sufficiency can be secured for at least 2 months.

by Frank

• Share on:
• WhatsApp
• Deel
• X
• Pin it
• Messenger
• Email