Please help!! Sma sunny boy
So i have a PMA wired in to a Sunny Boy 4000US. The output of the PMA is 440V. This allows optimum performance. Here is the dilemma. Since the SMA inverter has MPP tracking, it keeps trying to change the voltage. However, the PMA runs very rough when it tries to lower the RPMs. It keeps lowering the voltage, and what i want to know is how i can stabilize the voltage at 440V. The PMA doesnt run well at 350Vdc where the inverter is trying to take it. The input can be anywhere from 280-480, but i dont want it shifting the voltage. Any suggestions to stabilize the voltage at 440 and prevent the inverter from MPP tracking? Thanks in advance.
0 · Share on Twitter