Design and Analysis of Ferrite Less Magnetic Coupler with Improved Dynamic Performance Characteristics for EV Applications
IEEE Journal of Emerging and Selected Topics in Power Electronics, cilt.13, sa.1, ss.1316-1329, 2025 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 13 Sayı: 1
- Basım Tarihi: 2025
- Doi Numarası: 10.1109/jestpe.2024.3488505
- Dergi Adı: IEEE Journal of Emerging and Selected Topics in Power Electronics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
- Sayfa Sayıları: ss.1316-1329
- Anahtar Kelimeler: Dynamic wireless charging (DWC), electric vehicle (EV), inductive power transfer, magnetic coupler
- Ankara Yıldırım Beyazıt Üniversitesi Adresli: Evet
Özet
Dynamic wireless charging is making its way to charge electric vehicles (EVs) on the go. It has the potential to reduce both EV battery size and cost. However, the dynamic wireless power transfer (DWPT) system needs to be optimized before it can become widely available in the market. This includes designing compact magnetic couplers that can easily be placed under EVs and can handle both static and dynamic charging. This article recommends a single-sided flux-generating magnetic coupler with optimized performance factors. The proposed coupler has a better coupling coefficient and mutual inductance with considerably lower self-inductance, when compared to the conventional magnetic couplers. When tested for DWPT operation with three symmetric transmitters, the proposed coupler offers low mutual inductance with neighboring transmitters and naturally decouples with the third transmitter, reducing the effort required for decoupling multiple transmitters. The proposed receiver offers only 1.3% pulsating output voltage. Also, the proposed optimization helps to achieve 360° rotational misalignment tolerance with zero null zone present in its output I-V characteristics. To validate the proof of concept, a 1.6kW output power dynamic using LCC-S compensation at 85kHz resonance frequency is designed for 200mm air-gap, with maximum recorded efficiency to be DC-DC 93%.