Sensitivity Analysis of an LCC-LCC Compensated 20-kW Bidirectional Wireless Charging System for Medium-Duty Vehicles

Conference · Sat Jun 01 00:00:00 EDT 2019

OSTI ID:1550737

Mostak, Mostak Mohammad ^[1]; Anwar, Saeed  ^[2]; Onar, Omer  ^[2]; Pries, Jason  ^[2]; Galigekere, Veda Prakash  ^[2]; Asa, Erdem ^[2]; Su, Gui-Jia  ^[2]; Wilkins, Jon  ^[2]

---

1. University of Akron
2. ORNL

In this paper, sensitivity analysis of an LCC-LCC compensated bidirectional wireless charging system is presented. In a wireless charging system for electric vehicle applications, the effective load impedance varies significantly with the state-of-charge (SOC)of the battery. Due to the change in system parameters, resonant frequency, and transferred power, the efficiency of the system varies significantly. Sensitivity analysis of the system characteristics reveals the optimal operating region and required control strategy to operate within that region. Sensitivity analysis is even more important for a bidirectional system with mismatched input and output voltage levels. In this paper, the sensitivity of a bidirectional 20 kW wireless charging system is investigated analytically and the results are validated experimentally. The experimental results for a geometrically matched Double-D (DD) coil-based LCC-LCC tuned bidirectional WCS with asymmetric voltage levels show that the voltage gains and input impedance of the system are highly sensitive near the resonant frequency.

• 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: 1550737
• Resource Relation: Conference: IEEE Transportation Electrification Conference and Expo (ITEC 2019) - Novi, Michigan, United States of America - 6/19/2019 8:00:00 AM-6/21/2019 8:00:00 AM
• Country of Publication: United States
• Language: English