Scaling Rules at Constant Frequency for Resonant Inductive Power Transfer Systems for Electric Vehicles

Abstract

Abstract:The paper proposes the development of a set of rules for the resizing of inductive power transfer systems with particular attention to the ones dedicated to the charge of electric vehicles. These rules aim at the construction of down-scaled prototypes allowing the study and the design with benefits in terms of costs, time consumption and flexibility. The theoretical results are experimentally validated by comparing a 1.1 kW system with its down-scaled version.

Optimal Coupler Topology for Dynamic Wireless Power Transfer for Electric Vehicle

“…The dynamic wireless power transfer (DWPT) charging system for EVs application is a solution to solve the EVs battery dependence. The resonant inductive power transfer discussed in this paper is based on magnetic resonance coupling between the transmitter and the receiver coils defining the coupler [5][6][7].…”

Investigation of Scale Conversion for Inductive Power Transfer in Series-Series Configuration

“…Recently, the authors of [27][28][29] presented scaling rules for IPT. In [27], a scaling down rule is proposed.…”

“…Recently, the authors of [27][28][29] presented scaling rules for IPT. In [27], a scaling down rule is proposed. However, since the resonant frequency is kept constant and the change of parasitic resistance is not considered, this rule is able to be applied in only a small scaling range of around 0.5, which should be larger in the practical case.…”

“…In addition, the IPT system normally works as a voltage converter; thus, voltage gain should be considered as an important parameter of the system. Nevertheless, the authors of [27][28][29] did not consider the voltage gain. Besides, the authors of [28,29] only considered constant frequency assumption.…”