期刊
IEEE TRANSACTIONS ON MAGNETICS
卷 58, 期 2, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMAG.2021.3080706
关键词
Inverters; Wireless communication; Inductance; Topology; Switches; Capacitors; Electric vehicle charging; Electric vehicle (EV) charger; T-type neutral point clamp (TNPC) inverter; three-level (TL) inverter; three-phase inverter; wireless power transfer (WPT)
资金
- Natural Science Foundation of China (NSFC) [52077186, 51677159]
- Science Technology and Innovation Committee of Shenzhen Municipalityy, Shenzhen, China [JCYJ20180307123918658]
- Innovation and Technology Commission, Hong Kong SAR [ITP/027/19AP]
- Strategic Research Grant of City University of Hong Kong, Hong Kong SAR [CityU11218519, CityU11217520]
This study proposes a three-phase WPT system for EV wireless charging based on a T-type neutral point clamp inverter. The modeling, coil structure, and switching pattern of the proposed system are analyzed in detail. A novel output regulation method based on vector control and a NP voltage balance strategy are proposed to enhance the reliability of the system. Simulation and experimental results demonstrate the effectiveness of the proposed system and control method.
Three-phase wireless power transfer (WPT) systems have compact coil structures, canceled triplen harmonics, and less dc -link current ripple, which are suitable for wireless electric vehicle (EV) charging systems. Most three-phase WPT systems are based on two-level inverters. Alternately, three-level (TL) inverters have the potential to further promote the performance of EV chargers by reducing the electromagnetic interference (EMI) and the voltage stress of power switches. However, the unbalance of the neutral point (NP) voltage is a problem for traditional TL inverters. This article proposes a TL three-phase WPT system for EV wireless charging, which is based on a T-type neutral point clamp (TNPC) inverter. The modeling, coil structure, and switching pattern of the proposed system are analyzed in detail. Furthermore, a novel output regulation method based on vector control is proposed for the WPT system. Also, a NP voltage balance strategy is proposed to enhance the reliability of the TL inverter. Both simulations and an experimental prototype based on SIC- MOSFET are given to verify the effectiveness of the proposed three-phase WPT system and control method.
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