Modular MV Naturally Balanced Converter With High-Frequency Isolation and No DC-Link Capacitor for EV Fast Charging
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION, cilt.11, sa.1, ss.1141-1150, 2025 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 11 Sayı: 1
- Basım Tarihi: 2025
- Doi Numarası: 10.1109/tte.2024.3399329
- Dergi Adı: IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.1141-1150
- Anahtar Kelimeler: Electric vehicle (EV) charger, off-board charger (OBC), power factor correction (PFC), single-stage ac-dc converter
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Gazi Üniversitesi Adresli: Evet
Özet
This article presents and verifies the concept of a converter for a medium-voltage (MV) electric vehicle (EV) charging station that employs high-frequency (HF) galvanic isolation and features no dc link capacitor. The system is based on multicell boost (MCB) topology; however, instead of a conventional two-stage configuration with dc link, isolated current source converter (iCSC)-based cells are used. They perform power factor correction (PFC) while also providing HF galvanic isolation and are connected in series at the input and in parallel at the output. The exceptional feature of such configuration lies in inherent voltage balancing among the cells, which significantly simplifies the control and protection and improves scalability. The concept is verified with a scaled 4 kW prototype having three iCSC cells.