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Roadway Inductive Power Transfer depends on robust and reliable primary magnetic couplers (pads), but existing pads use large quantities of ferrite, a brittle magnetic material. This paper presents two variations on the Double D topology to reduce or remove the ferrite thereby making the system more robust, using an additional coil to help shape the field instead. Simulations and laboratory validations...
Commercial high power Electric Vehicle (EV) Inductive Power Transfer (IPT) systems need to comply with leakage regulations while transferring the required power. The choice and design of the magnetic coupler (pad) topology heavily influences the power, efficiency and leakage of these systems. This paper seeks to highlight the advantages and disadvantages of two pad topologies, the Square Pad and the...
Shaping of the magnetic field between the primary and secondary coils of Inductive Power Transfer Systems is crucial for system performance and to keep leakage within emissions guidelines. This paper gives an overview of different methods used to shape the magnetic field, followed by work done by the authors looking into one of these methods for use in an electric vehicle charging application using...
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