Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 30, Issue 11, Pages 6254-6263Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2015.2438016
Keywords
Inductive coupling; large-scale system; multiinput multioutput (MIMO); wireless efficiency; wireless power transfer (WPT)
Categories
Funding
- Texas Instruments
- TxMRC
- Texas Health Resources
- Intel
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In this paper, we investigated the effect of power combining and delivering in multiinput and multioutput wireless energy transmission systems, which consist of more than one transmitter antennas as sources and more than one receiver antennas as loads and repeaters. Theoretical expressions were developed to model the system operation that can be in a large-scale wireless energy network architecture. System characteristics, such as power transfer between antennas, power losses induced in each antenna, wireless efficiency, coil misalignment, and power fluctuation due to the loss of frequency synchronization were examined by theory and verified with experiments. Measurement results matched well with the theory demonstrating the feasibility of combining and delivering power with high efficiencies in large-scale wireless energy transmission systems.
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