Power maximization for capacitive wireless power transfer with two transmitters and one receiver

• Published in: 2018 IEEE MTT-S International Wireless Symposium (IWS) pp. 1 - 4
• Main Authors: Minnaert, Ben, Stevens, Nobby
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-05-2018
• Subjects: Capacitance; Couplings; Inductance; Power generation; Receivers; Transmitters; Wireless power transfer
• DOI: 10.1109/IEEE-IWS.2018.8400872

Inductive wireless power transfer from multiple transmitters to a single receiver has already been studied. However, for capacitive power transfer, an analysis of a multi transmitter setup has not yet been performed, even though useful applications are being developed for this technology. In this work, we determine the optimal solution for a capacitive wireless power transfer system in order to maximize the power transfer from two transmitter sources to a single load at the receiver side. As well the case for uncoupled as coupled transmitters is solved. We find that for the uncoupled configuration, a purely resistive load optimizes the system, whereas for the coupled configuration, a susceptance has to be inserted to maximize the power transfer. We confirm our results by circuit simulations.