Browse Publications Technical Papers 2019-01-0870
2019-04-02

Bi-Directional Wireless Power Transfer for Vehicle-to-Grid: Demonstration and Performance Analysis 2019-01-0870

Vehicle-to-Grid (V2G) technology is expected to play a role in addressing the imbalance between periods of peak demand and peak supply on the electricity grid. V2G technology enables two-way power flow between the grid and the high-power, high-capacity propulsion battery in an electrified vehicle. That is, V2G enables a balance between power demand and supply, which is becoming difficult due to the introduction of intermittent sources of renewable energy. The authors have shown through system simulations that bi-directional wireless power transfer (WPT) is possible with a system that meets the emerging SAE J2954 standard. Based on the result, the authors have also demonstrated a bi-directional wireless charging system for V2G applications. In this work an existing SAE J2954 compatible uni-directional system was adapted to enable bi-directional wireless power transfer with minimum impact to system cost, while maintaining full compatibility with the requirements of SAE J2954. Results of system performance over the full range of operating conditions are reported.

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