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Inductive wireless power transfer system using multiple coils for rotating propulsive shaft applications
Author(s) -
Hoang Van Ai,
Lee Young Chul
Publication year - 2021
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32641
Subject(s) - wireless power transfer , air gap (plumbing) , transmitter , electrical engineering , maximum power transfer theorem , voltage , power transmission , propulsion , power (physics) , engineering , rotation (mathematics) , wireless , rotational speed , acoustics , electromagnetic coil , physics , materials science , mechanical engineering , computer science , telecommunications , channel (broadcasting) , aerospace engineering , quantum mechanics , artificial intelligence , composite material
An induction wireless power transmission (I‐WPT) system using multiple coils has been proposed to drive a wireless sensor system (WSS) that monitors the status of the propulsion shaft. While maintaining a constant transfer voltage, the minimum number of coils and the minimum air gap between coils were extracted through several experiments. The optimized air gap between transmitter (Tx) and receiver (Rx) coils was 3 mm and the number of the Rx and Tx coils was four and six, respectively. The optimized I‐WPT system was installed on the shaft with a diameter of 20 cm and obtained the stable transferred voltage characteristics and output power of 1.75 W with above 75% efficiency in spite of different rotation speed of the shaft.