A Novel LCC-CLCC Resonant Tuning Network for Light-Load Conditions in Wireless Power Transfer Systems

Conference · 01 June 2023

DOI:https://doi.org/10.1109/ITEC55900.2023.10210328· OSTI ID:1997663

Harave, Sudarshan ^[1]; Onar, Omer ^[1]; Mohammad, Mostak ^[1]; Galigekere, Veda Prakash ^[1]; Su, Gui-Jia ^[1]

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1. ORNL

In wireless power transfer (WPT) systems, voltage and current distortions are observed at the vehicle side rectifier when power flow is from grid to vehicle (G2V) under light load conditions. These distortions can increase switching losses and decrease the overall efficiency of the WPT system. To address this issue, this paper proposes adding a higher value inductor in series with the original LCC tuning network at the vehicle side. However, increasing the series inductance causes the input impedance and phase angle to move away from the resonant frequency. To solve this problem, a capacitor is added in series to tune out the difference between the original and modified inductor values. This series tuning capacitor also improves the power factor and brings the input impedance and phase angle back to the resonant frequency. The traditional LCC-LCC and proposed LCC-CLCC WPT systems are compared and analyzed analytically, and simulated in a MATLAB/Simulink environment to verify parameters such as efficiency and power transfer capacity. An experimental prototype is implemented and compared with the simulation. The obtained results confirm the validity of the proposed method.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1997663
• Resource Relation: Conference: IEEE Wireless Power Technology Conference and Expo (WPTCE) - San Diego, California, United States of America - 6/4/2023 4:00:00 AM-6/8/2023 4:00:00 AM
• Country of Publication: United States
• Language: English