how do i use the pll block of simulink to measure frequency?

Hi, I am trying to use the pll block of simulink to measure the frequency of a variable frequency system but the block always gives me just the value I input as the initial frequency. How can I Use this block to measure a frequency which may/may not have anything to do with the initial frequency? Is there any other way I can measure frequency on simulink?

[rucha joshi]

i am facing the same problem.is there any solution???

Answer 1

[Sabin]

You must tune the PLL such that it works for your use case. Check this Simscape Electrical example for how to use a Sinusoidal Measurement (PLL):

https://www.mathworks.com/help/sps/ug/power-factor-correction-for-ccm-boost-converter.html

In the above example you can see that if you change the initial frequency to let’s say 30 Hz, the estimated frequency will still settle at 60 Hz (system frequency).