Magnetic modeling of a high-power three phase bi-directional IPT system

The demand for high power and bi-directional Inductive Power Transfer (IPT) systems is on the rise due mainly to applications such as electric vehicles (EVs) and vehicle-to-grid (V2G) systems. Three phase bi-directional IPT systems can be considered as a viable option for high power applications as they are more efficient especially at elevated power levels due to lower track currents and lower DC ripple currents in comparison to single-phase bi-directional IPT systems. This paper proposes a new IPT system that adopts a three-phase magnetic circuit for both primary and secondary sides of the system. Analyses related to design of the magnetic circuit for a 10 kW system are presented and validated by 3D simulations using JMAG Studio 10.0™ for four different magnetic circuit configurations. Based on the results, the most effective design is used for further simulations in MATLAB Simulink environment to show that the proposed three-phase IPT system is capable of delivering 10 kW as per design specifications.