This "PLECS Model of the Month" video provides an overview of a proposed Z-source inverter (VSI) topology. This model has been developed by Ph.D. student Jing Yuan at Aalborg University. He can be contacted at firstname.lastname@example.org and the reference to his paper is:
Yuan, Jing & Yang, Yongheng & Liu, Ping & Blaabjerg, F. (2018). Model Predictive Control of An Embedded Enhanced-Boost Z-Source Inverter. 1-6. 10.1109/COMPEL.2018.8459954.