Multiple-input multiple-output dynamic charging using multiple parallel line feeders

This paper proposes a multiple-input multiple-output dynamic charging system for electric vehicles (EVs) using more than one parallel line feeders and pick-ups. Indeed, it has been noticed that in the single parallel line feeding system with a single pick-up, the received power is subject to severe fluctuations due to the standing wave in the magnetic field all along the feeding line. Therefore, by employing multiple shifted parallel line feeders with multiple pick-ups, the proposed method benefits from a pattern diversity to overcome the standing wave issue and also gains from a multiplexing effect resulting in more stable and significantly improved output power. Supported by theoretical analysis, experiments on a system with three feeders and three pick-ups operating at the frequency of 13.56MHz demonstrate the effectiveness of the proposed method.