کنفرانس مهندسی برق ایران

صفحه اصلی / سی و دومین کنفرانس بین المللی مهندسی برق

Robust Wireless Power Transfer by Self-Oscillating Controlled Inverter and Double-D Pads

نویسندگان :

Alireza Eikani¹ Mohammad Amirkhani² Hossein Jafari³ Hesamodin Abdoli⁴ Sadegh Vaez-Zadeh⁵ Ghasem Rezazadeh⁶

1- University of Tehran 2- Amirkabir University of Technology (Tehran Polytechnic) 3- University of Tehran 4- Amirkabir University of Technology (Tehran Polytechnic) 5- University of Tehran 6- University of Tehran

کلمات کلیدی :

Double-d Pad (DDP)،magnetic coupling coefficient،robustness،self-oscillating controlled inverter،wireless power transfer (WPT)

چکیده :

Mobile devices like electric vehicles (EVs) require a high level of efficiency and power stability for inductive wireless power transfer (WPT). A robust WPT system is demonstrated in this paper with double-D pads (DDP) serving as transmitter and receiver and using a self-oscillating controlled inverter to maintain a constant output power and transfer efficiency regardless of variation in coupling coefficient within a defined region, with no communication between Tx and Rx or control circuits in the receiver. The proposed compact DDP-DDP magnetic coupler with a single identical coil on both the Tx and Rx pads provides a robust WPT system with up to a 20 cm air gap, up to 12 cm lateral misalignment at a 20 cm air gap, and limited degrees of rotational misalignment between the Tx and Rx that can tolerate coupling variations and achieve constant 1-kW output power with 92% constant transfer efficiency.