For simulink based modelling of power converters, following books and papers may help
1.High Performance Control of AC Drives with Matlab / Simulink Models by Haitham Abu-Rub
2.Advanced Electric Drives: Analysis, Control, and Modeling Using MATLAB- Ned Mohan
For PV Modelling i wold like to recommend the paper written by M. G. VILLALVA, you can download the models from the link
https://sites.google.com/site/mvillalva/pvmodel
Regarding the small signal modelling of PV systems, please refer the papers and thesis from Prof. Teuvo Suntio's research groups (Tampere University of Technology).
For MPPT and dynamic modelling you can also refer the books written by Nicola Femia, "Power Electronics and Control Techniques for Maximum Energy