Understanding a PLL: Determine H(s) from Transfer Functions

  • Thread starter Thread starter anon6912
  • Start date Start date
Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
1 reply · 2K views
anon6912
Messages
21
Reaction score
3
I'm trying to implement a basic PLL. The diagram is given as follows:
ufU8lrC.png

ufU8lrC

ufU8lrC

Where the transfer functions are given as follows:
o0BHksR.png

o0BHksR


To implement the PLL I need it to be as follows:
gK0RkWm.png

gK0RkWm


How do I determine H(s) from the transfer functions that are given?

Thank you for your help
 
  • Like
Likes   Reactions: jim mcnamara
Engineering news on Phys.org
Based on your 3rd picture, the block diagram reminds me of the so-called synchronous frame-PLL shown below (see attached pdf for more details). Here the loop filter is basically a PI regulator.

Se also "Operation of a phase locked loop system under distorted utility conditions" by V. Kaura and V. Blasko if you are interested in PLL under distorted inputs.
upload_2017-9-25_16-36-45.png
 

Attachments