Working on a project to improving the data gathering and the test process for a 1kw UC3855 PFC and a 2kW UC2854 based PFC. The units are100-260input 50-60Hz and boost to 400VDC. Approximately a combined 10pcs per day are tested. The intent of the data gathered in to monitor the yield.
The test stand is not automated with a tech controlling a variable DC supply and a VARIAC. The test is sectioned into DC input tests and AC input tests. The stand has scope with current & voltage probe, input/output power meter.
I am having a hard time trying to determine what would be useful data to the indicate PFCs are "in control". I do not want to go crazy and gather data for the sake of having data.
What are good parameters to collect to indicate PFC are functioning ? PFC?
Ideally the data could be presented on control charts and basic SPC concepts could be applied.
Thanks for any responses