Order Reduction for Dynamic Modeling of WPT Systems with Phase Shift Control

In the modeling of wireless power transfer systems, traditional modeling approaches often result in high-order models. In order to obtain a simplified model that can explain the input-output relationship of the system, this paper focuses on the LCC-LCC resonant compensating wireless power transfer system and proposes a method for establishing a dynamic model based on phase control. The model is then reduced to a first-order model using Taylor series expansion. Through comparison, it is found that the accuracy of this first-order model is not significantly compromised.