کنفرانس بین المللی ماشین و محرکه های الکتریکی

صفحه اصلی / The 3rd International Conference on Electrical Machines and Drives

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

نویسندگان :

Alireza Eikani¹ Mohammad Amirkhani² Hossein Jafari³ Sadegh Vaez-Zadeh⁴ Mojtaba Mirsalim⁵ Davood Arab Khaburi⁶

1- university of tehran 2- Amirkabir University of Techonlogy 3- university of tehran 4- university of tehran 5- Amirkabir University of Techonlogy 6- Iran University of Science and Technology

کلمات کلیدی :

Circular pad (CP)،magnetic coupling coefficient variations،robustness،self-oscillating controlled inverter،wireless power transfer (WPT)

چکیده :

Inductive wireless power transfer (WPT) faces significant challenges in achieving high efficiency and stable output power for charging mobile devices like EVs. Using circular pads (CP) as the transmitter (Tx) and receiver (Rx) and a self-oscillating controlled inverter, this paper demonstrates a robust WPT system that maintains high constant transfer efficiency and output power in a defined region regardless of coupling coefficient variations without communication between Tx and Rx or control circuits for the receiver side. In contrast to couplers with non-identical Tx and Rx pads and multiple decoupled coils in the Rx pad, the compact CP-CP magnetic coupler with a single identical coil on the Tx and Rx is more robust at a wider transfer distance (air gap) and lateral and rotational misalignment between the Tx and Rx. The proposed 1-kW robust WPT system with up to a 20 cm air gap between the Tx and Rx and up to 12 cm lateral misalignment in all directions at a 15 cm air gap and all degrees of rotational misalignment can tolerate coupling variations and achieve constant output power with 93% constant transfer efficiency.