I am new to Lab View and wanted some insight on how I can use Lab View to calculate Power Factor in an asymmetrical waveform using the ratio method from ANCI C37.51 Standard?

[millswj]

Attached is a copy of the pages in that standard that I am trying to accomplish with Labview.

[MattBradley]

From the formulas in the document, it looks like you need to calculate RMS values and averages, correct?

If so, there are several statistical functions that will do the job for you.  Just search the help and you'll see them.

[millswj]

Thanks Matt; The answer is yes I do need to calculate the averages. I need to calculate the RMS Asymmetrical Current and the RMS Symmetrical Current at the 1/2 cycle mark. The values are taken at the top and bottom at the points on the curve at that 1/2 cycle mark. Are there functions in Lab View that will allow me to create the curve and calculate those values at those points on the waveform?

[JeffL]

Hi millswj,

The statistics VIs can be found in your Functions palette under Mathematics»Probability and Statistics. That's probably what you're looking for.

[millswj]

Thanks Jeff, I will be installing the Lab View Computer and Hardware next week and will capture some data try to make the statistical functions work.