Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States); Gazi University, Ankara (Türkiye)
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Misaligned and/or variable coil airgaps cause coupling coefficient variation in wireless power transfer (WPT) systems, resulting in a decrease in the system’s transmitted power and efficiency. This paper presents sensitivity analyses of a three-phase, Y-Y connected, series-tuned WPT system in the frequency domain in terms of several different electric vehicle wireless charging off-nominal conditions (misalignments in Δ x and Δ y directions, change of airgap Δ z , and the roll Δψ, pitch Δθ, and yaw ΔΦ angles) as specified in Society of Automotive Engineers (SAE) J2954 Standard. Coil inductance matrices were obtained by measuring the self- and mutual inductances of the primary and secondary coil phase windings at variable airgap classes (from 5 cm to 30 cm) for five different charging positions as identified in SAE J2954. These 6 × 6 inductance matrices were used in sensitivity and Plexim/PLECS simulation analyses. The sensitivity of the WPT system was analyzed analytically using the input impedance and phase angle, voltage gain, current gain, quality factor, and coupling coefficient parameters of the series-tuned WPT system. The results were confirmed experimentally on a 50 kW WPT system.
Aktas, Ahmet, et al. "Sensitivity Analysis of a Polyphase Wireless Power Transfer System under Off-Nominal Conditions." IEEE Transactions on Transportation Electrification (Online), vol. 1, no. 1, Dec. 2023. https://doi.org/10.1109/tte.2023.3340692
Aktas, Ahmet, Onar, Omer C., Asa, Erdem, Mohammad, Mostak, Ozpineci, Burak, & Tolbert, Leon M. (2023). Sensitivity Analysis of a Polyphase Wireless Power Transfer System under Off-Nominal Conditions. IEEE Transactions on Transportation Electrification (Online), 1(1). https://doi.org/10.1109/tte.2023.3340692
Aktas, Ahmet, Onar, Omer C., Asa, Erdem, et al., "Sensitivity Analysis of a Polyphase Wireless Power Transfer System under Off-Nominal Conditions," IEEE Transactions on Transportation Electrification (Online) 1, no. 1 (2023), https://doi.org/10.1109/tte.2023.3340692
@article{osti_2406793,
author = {Aktas, Ahmet and Onar, Omer C. and Asa, Erdem and Mohammad, Mostak and Ozpineci, Burak and Tolbert, Leon M.},
title = {Sensitivity Analysis of a Polyphase Wireless Power Transfer System under Off-Nominal Conditions},
annote = {Misaligned and/or variable coil airgaps cause coupling coefficient variation in wireless power transfer (WPT) systems, resulting in a decrease in the system’s transmitted power and efficiency. This paper presents sensitivity analyses of a three-phase, Y-Y connected, series-tuned WPT system in the frequency domain in terms of several different electric vehicle wireless charging off-nominal conditions (misalignments in Δ x and Δ y directions, change of airgap Δ z , and the roll Δψ, pitch Δθ, and yaw ΔΦ angles) as specified in Society of Automotive Engineers (SAE) J2954 Standard. Coil inductance matrices were obtained by measuring the self- and mutual inductances of the primary and secondary coil phase windings at variable airgap classes (from 5 cm to 30 cm) for five different charging positions as identified in SAE J2954. These 6 × 6 inductance matrices were used in sensitivity and Plexim/PLECS simulation analyses. The sensitivity of the WPT system was analyzed analytically using the input impedance and phase angle, voltage gain, current gain, quality factor, and coupling coefficient parameters of the series-tuned WPT system. The results were confirmed experimentally on a 50 kW WPT system.},
doi = {10.1109/tte.2023.3340692},
url = {https://www.osti.gov/biblio/2406793},
journal = {IEEE Transactions on Transportation Electrification (Online)},
issn = {ISSN 2332-7782},
number = {1},
volume = {1},
place = {United States},
publisher = {IEEE},
year = {2023},
month = {12}}