IMPROVED EFFICIENCY NON-SELF TUNING WIRELESS POWER TRANSFER SYSTEMS

摘要

A primary resonant network for a wireless power transfer has a primary winding capable of being energised to provide a magnetic field, and a reactive component selected to constrain the reactive loading on a power supply which energises the primary resonant network. The reactive component is selected dependent on a given variation in inductance or capacitance of the primary resonant network and a given variation in inductance or capacitance of a secondary resonant network coupled to the primary resonant network.