How to write this PLL block " wt in terms of Vq", abc is Grid phase voltages.

write equation wt in terms of Vq.

Answer 1

[Sabin]

Not sure if you try to reverse engineering this Simulink diagram. I would start with the basics of PLL. A good starting point is:

https://mathworks.com/help/sps/ref/sinusoidalmeasurementpllthreephase.html

[Dhiraj]

I went through your suggestion ,but could not found it useful.