Just to make design decisions for an inverter.
First thought is to have HF trafos with 3 coils for galvanic seperation
MPPT input from PV 240 to 600 V
AC input or output 230 V 20 A
batteries input or output 40 V to 57.6 V for 16 LiFePo4 in series.
Should have a good efficiency also at low light conditions, PV input at 1% of max power.
So the main design question is
How many HF trafos
All the same size, or maybe in size steps
If in size steps, how big should be the step from one HF trafo to the next smaller? Binary?
The decision for HF-trafos with 3 coils is mainly based on the diffficult question is galvanic separation necessary or not.
First thought is to have HF trafos with 3 coils for galvanic seperation
MPPT input from PV 240 to 600 V
AC input or output 230 V 20 A
batteries input or output 40 V to 57.6 V for 16 LiFePo4 in series.
Should have a good efficiency also at low light conditions, PV input at 1% of max power.
So the main design question is
How many HF trafos
All the same size, or maybe in size steps
If in size steps, how big should be the step from one HF trafo to the next smaller? Binary?
The decision for HF-trafos with 3 coils is mainly based on the diffficult question is galvanic separation necessary or not.
