hgg
New Member
- Joined
- Sep 5, 2022
- Messages
- 41
Hi,
I currently have a small 2kW solar array in a series/parallel configuration as in the diagram below,
together with the Phocos 3kW hybrid inverter and a custom 6.7kW LiFePo4 battery.
Everything is working fine but I need just a bit more solar power for the perfect balance.
The solar panels are from Eco Delta, they are shingled and are working amazing under
all conditions. Unfortunately they have decided to stop exporting to Europe because
of the cost and the lower priced normal panels.
So I am looking to add another two panels to my existing configuration.
I have narrowed them down to the Hyundai 440W and the Sharp 415W.
The new configuration will be three panels in series (two EcoDelta plus the new one)
and two series in parallel.
With the Hyundai I will get a theoretical total of 2773 W and with the Sharp 2807 W
Even though the Sharp has less watts than the Hyundai it will give me more power
because its current is closer to that of the EcoDelta. (on the negative side, if I choose
the Sharp I will loose the performance of the shingled technology.)
My concern is that the Vmpp difference of the EcoDelta and the Sharp is 7.51V while
the difference of the EcoDelta and the Hyundai is only 2.7V and I do not know how
the MPP charge controller will respond.
So, my question is, what is the actual result of a higher Vmpp difference if you mix
panels in series, will it bring my whole system down to a lower wattage?
Which panel do you think is most suitable ?
Thank you.
I currently have a small 2kW solar array in a series/parallel configuration as in the diagram below,
together with the Phocos 3kW hybrid inverter and a custom 6.7kW LiFePo4 battery.
Everything is working fine but I need just a bit more solar power for the perfect balance.
The solar panels are from Eco Delta, they are shingled and are working amazing under
all conditions. Unfortunately they have decided to stop exporting to Europe because
of the cost and the lower priced normal panels.
So I am looking to add another two panels to my existing configuration.
I have narrowed them down to the Hyundai 440W and the Sharp 415W.
The new configuration will be three panels in series (two EcoDelta plus the new one)
and two series in parallel.
With the Hyundai I will get a theoretical total of 2773 W and with the Sharp 2807 W
Even though the Sharp has less watts than the Hyundai it will give me more power
because its current is closer to that of the EcoDelta. (on the negative side, if I choose
the Sharp I will loose the performance of the shingled technology.)
My concern is that the Vmpp difference of the EcoDelta and the Sharp is 7.51V while
the difference of the EcoDelta and the Hyundai is only 2.7V and I do not know how
the MPP charge controller will respond.
So, my question is, what is the actual result of a higher Vmpp difference if you mix
panels in series, will it bring my whole system down to a lower wattage?
Which panel do you think is most suitable ?
Thank you.