A simple method to determine the performance of two-coil wireless power transfer systems without direct output measurement

Two-coil wireless power transfer systems are composed of two circuits tuned at the same resonance frequency, one containing source and other load, where both connected to each by a mutual inductance. The delivered load circuit is divided total supplied or, alternatively, maximum ideal amount that can be circuit, usual figures merit known as efficiency capability, respectively. Additionally, third figure defined dissipated source. It has recently been demonstrated capability related this merit. In paper, simple method presented monitor source, which allows determination and/or without direct measurement circuit. advantages limitations proposed discussed in detail. Practical results included verify proposal.