A Multi-Frequency Superposition Methodology to Achieve High Efficiency and Targeted Power Distribution for Multi-Load MCR WPT System

Magnetically coupled resonant (MCR) wireless power transfer (WPT) is one of the most promising WPT technologies for its remarkable capability of simultaneous non-contact power transfer for multiple independent loads. Nevertheless, diverse energy requirements of different loads and efficiency quota make it difficult to design and optimize the multi-load system. In this paper, a novel driver configuration for MCR WPT system with multiple loads is proposed, in which, the transmitting resonant tank is driven synchronously by multiple inverters operating at multiple switching frequency and sharing a common dc voltage source, then, a multi-frequency superposition methodology is presented to achieve high efficiency and targeted power distribution. In this paper, a double-frequency MCR WPT system with two loads is comprehensively investigated as a representative example, and the studied methodology has been experimentally verified by two prototypes of the proposed circuit configurations.     «

Magnetically coupled resonant (MCR) wireless power transfer (WPT) is one of the most promising WPT technologies for its remarkable capability of simultaneous non-contact power transfer for multiple independent loads. Nevertheless, diverse energy requirements of different loads and efficiency quota make it difficult to design and optimize the multi-load system. In this paper, a novel driver configuration for MCR WPT system with multiple loads is proposed, in which, the transmitting resonant tank...     »