Re: [TCML] JavaTC PF cap calculation XL,XC,Z

[bartb <bartb@xxxxxxxxxxxxxxxx>]

Javatc's PFC calculation is based on the transformer specs and no more 
than a ballpark number to give the approximate range of capacitance 
needed. This comes up about often. The ballast inductance and cap will 
change the ideal value. But not only that, the transformer itself 
(regardless of cap and ballast) is also a ballpark. It is a starting 
point for the approximate values to look at for PF correction. 
Experimentation is needed to dial in PFC, meaning add/remove PF 
capacitance in steps and measure current. I've left this output in 
Javatc because it does help to know "about" what C value range to look 
at. This is all that Javatc is trying to show (nothing more).

Bart


> It will be a variable. If you are using a polemount distribution transformer
> or 
> a potential transformer, the transformer itself has little to do with PFC.
> The 
> turns ratio is the most important parameter, the internal resistance and 
> inductance will be rather insignificant and can be ignored. The relationship
>
> between the reflected impedance of the ballast and the tank cap are what you
>
> need to look at.
>
> See my page at:
> http://deanostoybox.com/pfc.html
>
>   
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla