Analysis of the Relationship between the Parameters of IPT Transformer and Power Electronic System

Inductive power transfer (IPT) is a promising technology that can replace the wire based power transfer. Efficiency of these systems will be a critical performance index that will determine their future in commercial applications. This paper analyses a series-series(SS) compensated IPT system using Boucherot bridge current source model to establish the relationship between magnetic pad parameters (mutual inductance) and power electronic system parameters (input and output voltages and currents). Analysis was used to design a 3.7 kW IPT system. The design is validated with the aid of finite element analysis software, ANSYS Maxwell and Simplorer. The proposed design is capable of transferring power at an efficiency of 95.88%. Furthermore, analysis shows that the mutual inductance requirement decreases with the increase in rated power for a SS compensated IPT system.