Journal article
Efficiency Study of Vertical Distance Variations in Wireless Power Transfer for E-Mobility
Technical University of Denmark1
Department of Electrical Engineering, Technical University of Denmark2
Electronics, Department of Electrical Engineering, Technical University of Denmark3
Center for Electric Power and Energy, Centers, Technical University of Denmark4
Distributed Energy Resources, Center for Electric Power and Energy, Centers, Technical University of Denmark5
Federal University of Maranhão6
Aalborg University7
A Wireless Power Transfer (WPT) system is a safe, convenient and smart charging solution for Electric Vehicle (EV) users. However, a drawback of WPT systems is reduced efficiency in comparison to conventional wired charging due to lower coupling. By increasing the volume of EVs in the market, improving the system efficiency even a few percent, beside of being environmentally suitable, will benefit both consumers and distributors.
According to the previous studies, efficiency improvement by decreasing the vertical distance (VD) between transmitter (TX) and receiver (RX) coils, has been one of the aims of the companies and universities. However, in low VD, system performance becomes highly sensitive, due to the magnetic coupling strength.
The focus of this paper is to analyze the effects of decreasing the vertical distances to WPT resonance tank efficiency’s. Finally, some of the most significant parameters that affect the system efficiency at low VD such as quality factor and third harmonic interference are analyzed and a mitigating approach is proposed
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2016 |
| Pages: | 1-1 |
| ISSN: | 19410069 and 00189464 |
| Types: | Journal article |
| DOI: | 10.1109/TMAG.2016.2517569 |
| ORCIDs: | Ouyang, Ziwei , Andersen, Michael A. E. and Andersen, Peter Bach |
3rd harmonic impedance interference Coils Couplings E-mobility EV Efficiency Harmonic analysis Inductance Interference Mathematical model Power system harmonics WPT WPT resonance tank efficiency efficiency electric vehicle electric vehicles inductive power transmission magnetic coupling strength mutual inductance quality factor radiofrequency power transmission receiver coils reflective resistance smart charging solution system efficiency third harmonic impedance interference third harmonic interference transmitter coil vertical distance variations wireless power transfer wireless power transfer (WPT)
