Theoretical evaluation of bifurcation in dependence on resonance frequency in two-coil inductive power transfer

Abstract

Operation of two-coil inductive power transfer (IPT) system is affected by bifurcation phenomenon. In this paper, bifurcation in dependency on resonance frequency is examined. At first, voltage equations are analyzed, and impedance and transfer function derived. In next step, condition for resonance frequency is stated, which is followed by bifurcation analysis. Resulting bifurcation map is analytically described. Lastly, impacts of bifurcation on resonance frequency choice are evaluated using impedance and transfer function.