Technical Support

during a recent fault diagnosis trail I split my parallel inverters into singleton mode, I found a discrepancy in the output of the Slave unit, i had touched on this on a number of posts a few months ago, the output of the slave array was below par, the forum members suggested this was to do with the angles and direction of the arrays etc, this still did not sit with me as logically the sun in midsummer was perfect for an East facing array at 15:00 - 16:00 at 30% pitch. the folloing String Data images clearly show a nearly 50% loss from Singleton mode & Parallel mode on comparable sunny days.

The above images are inverter in signleton mode at 15:45, the below images are Parellel mode at 15:45

The String voltage changes at about 13:30 everday and climbs from 320v - the expected to circa 365v, this is totally managed by the Parallel mode algorithm and just isnt sitting well with me,

i am calcualting a 10 - 20% loss of generation capacity in parallel mode to singleton mode, however the batteries & loads need more micro managing in singleton mode, I would need to increase capacity - 3 units per inverter from the current 2 singleton / 4 in parallel.

I could also avail of the Aux port in singleton mode which I lose in Parallel mode.