Hereby I have uploaded a simulink model for ac-dc buck converter with voltage mode control.
It involves use of Gvd i.e. transfer function for change in voltage to duty cycle. Gvd can be found out using state space modelling of ac-dc converter.
Change the values as per your design specification and analyse the output.
zameer abbas (2020). ACDCbuck.mdl (https://www.mathworks.com/matlabcentral/fileexchange/47415-acdcbuck-mdl), MATLAB Central File Exchange. Retrieved .