I design a LED-Driver for Streetlightnig. But we have massiv problems with harmonic currents @ 5,7,9,11 orders.
Effency of the driver is ~ 91,5% (very nice performance). Is it possible that we do a big fail with the filters or "DC" Caps? Powerfactor isnt stabil but with full Load we get an PF of 97%
Please refer to the atteched PDF.
2x 28T prim (Series), 2x 14T Sec(Parall), 9T Bias
Core: PC44; PQ3230
The same configuration like the RDR-290 Transofrmer
30W-Outputpower, 230V 50Hz AC Input, 0,88A @32-36V Output
I want use the Transformer and the System for a 50W and 75W Powersupply... only change the LNK-IC. Is That possible?
Thank you for help.
I add a picture from my mesured values ... Order 9 and 11 are the biggest problem.