Efficiency Study of Vertical Distance Variations in Wireless Power Transfer for E-Mobility

Morteza Ghorbani Eftekhar; Ziwei Ouyang; Michael A. E. Andersen; Peter Bach Andersen; Luiz A. de S.  Ribeiro; Erik Schaltz

doi:10.1109/TMAG.2016.2517569

Efficiency Study of Vertical Distance Variations in Wireless Power Transfer for E-Mobility

Morteza Ghorbani Eftekhar
, Ziwei Ouyang
, Michael A. E. Andersen
, Peter Bach Andersen
, Luiz A. de S. Ribeiro
, Erik Schaltz

Technical University of Denmark
Federal University of Maranhão
Aalborg University

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

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

Original language	English
Article number	8401004
Journal	IEEE Transactions on Magnetics
Volume	52
Issue number	7
Number of pages	4
ISSN	0018-9464
DOIs	https://doi.org/10.1109/TMAG.2016.2517569
Publication status	Published - 2016

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title = "Efficiency Study of Vertical Distance Variations in Wireless Power Transfer for E-Mobility",

abstract = "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{\textquoteright}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",

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AU - Eftekhar, Morteza Ghorbani

AU - Ouyang, Ziwei

AU - Andersen, Michael A. E.

AU - Andersen, Peter Bach

AU - Ribeiro, Luiz A. de S.

AU - Schaltz, Erik

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PY - 2016

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N2 - 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

AB - 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

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DO - 10.1109/TMAG.2016.2517569

M3 - Journal article

SN - 0018-9464

VL - 52

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 7

M1 - 8401004

ER -

Efficiency Study of Vertical Distance Variations in Wireless Power Transfer for E-Mobility

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