Patent ID: 8941266
Filing Date: 2015-01-27
Classification: H02J,H02M,Y02B

Abstract:
1. An IPT pick-up circuit comprising: a resonant circuit comprising a pick-up inductor and a tuning capacitance in parallel with the pick-up inductor; a control system to control power transfer to the pick-up circuit, the control system comprising a rectifier system; and a power conditioning impedance comprising an inductive element provided in series between the resonant circuit and the control system, the power conditioning impedance passing alternating current from the resonant circuit to the control system and the power conditioning impedance being selected to provide a required power factor in the resonant circuit, wherein the inductive element provided between the resonant circuit and the rectifier system and wherein the power conditioning impedance comprises a compensatory capacitive element connected between the tuning capactitance and an inductive element to compensate for reactive loading of the rectifier system on the circuit.