Enhanced Static and Dynamic Modeling of a Series-Series Inductive Power Transfer System with a Buck Post-Regulator

The chapter delves into the advanced static and dynamic modeling of a series-series Inductive Power Transfer System (IPTS) integrated with a Buck post-regulator. The First Harmonic Approximation (FHA) method is employed for static modeling, revealing operating regions where the post-regulator output voltage exhibits non-monotonic behavior, crucial for system stability. The dynamic modeling is enhanced using Coupled Mode Theory (CMT), extending its applicability to various operating frequencies. The chapter also covers the design of a voltage mode controller for the Buck converter and validates the models through experimental results, showcasing excellent voltage regulation under both static and dynamic load conditions. These models and findings are essential for optimizing the performance and controllability of IPTS in various applications, such as electric vehicles and portable devices.