# Power factor correction on a Microcontroller (8-bit)

Discussion in 'Electronic Design' started by John, May 17, 2005.

1. ### JohnGuest

Power factor correction on a Microcontroller (8-bit)

For school project I write a report about the posibility to
implement PFC on a 8-bit microcontroller. Could any from
you provide me information, or an example project
how to do this ??

Regards,

John

2. ### Ian StirlingGuest

What do you mean?
Do you mean using it to drive a PFC correction unit of some sort?

3. ### JohnGuest

No, i don´t want to drive a PFC chip. I wan´t to implement the
algorithm of PFC in a Micro controller.

4. ### Luhan MonatGuest

Same question, what does that mean? The algorithm is just a
computation, what are planning to do with the result?

5. ### JohnGuest

to drive a motor
With the result i want(<40 Watt)

6. ### JohnGuest

With the result i want to drive a motor(<40 Watt)

7. ### Rich GriseGuest

Do you even know what power factor correction is? You have to determine
if you have a leading or lagging power factor, and introduce an equal
and opposite reactance to bring it back to unity.

How you'd apply a microcontroller to that is, of course, left as an
exercise for the student. ;-P

Cheers!
Rich

8. ### Paul BurkeGuest

Well the input pins are about 5pF each, so you could parallel a few..

Paul Burke

9. ### Frithiof Andreas JensenGuest

And?? A resonant circuit can do it - with a little feedback help.
But the student said "motor", which (as a load) is inductive, so it is
easier then.
The student may wish to read: Kjeld Torborg "Power Electronics in Theory and
Practice", ISBN 91-44-38091-7.