Optimized 3-D Polarized <i>H</i>-Field Forming for Orientation-Insensitive Wireless Power Transfer Systems

Srivastava, Vivek Kumar; Sharma, Ashwani

doi:10.1109/tap.2021.3060140

Cited by 10 publications

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Increasing the size of Tx and Rx coils based on the loop shape is just one of the methods to increase the tolerance for misalignment, but it is not practical due to the limitation of mounting areas for the coil set in vehicles [8]. The two most prominent misalignment problems observed in WPT systems are angular [9] and lateral [10] alignment. When studies are examined, automatically controlled alignment systems for central alignment can be used in EVs to guide EVs to charging stations, such as giant magnetoresistance (GMR) sensors or mobile communications [11,12].…”

Section: Introduction (Gi̇ri̇ş)mentioning

confidence: 99%

Efficiency Optimization of Multiple Coil Wireless Power Transfer System based on Adaptive Impedance Matching Network

Issı

2024

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım Ve Teknoloji

View full text Add to dashboard Cite

A wireless energy transfer system was developed using multiple transmitting coils and a full bridge inverter at 85 kHz. The system consisted of three identical transmitter coils and one receiver coil. The study aimed to assess the impact of a tuned capacity array on the system's efficiency for various receiver coil placements. The experiment was conducted in eight different placements, with and without capacity tuning. The simulation showed that the efficiency ranged from 87.5% to 91.5%, while the experimental study showed efficiency between 87.8% and 91.9% under the same conditions. The tuned capacity array was utilized in both studies, resulting in efficiency ranging between 89.3% and 92.8% in the simulation and between 89.5% and 93.1% in the experimental study. The experiment revealed an increase in efficiency of 1.65%, 1.23%, 1.39%, 2.5%, and 1.28% in five different locations (A→E), respectively, while a decrease of 0.4%, 0.89%, and 0.45% was observed in three other locations (F→H), respectively.

show abstract

Section: Introduction (Gi̇ri̇ş)mentioning

confidence: 99%

Efficiency Optimization of Multiple Coil Wireless Power Transfer System based on Adaptive Impedance Matching Network

Issı

2024

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım Ve Teknoloji

View full text Add to dashboard Cite

show abstract

“…The analysis and calculation of the electromagnetic field of WPT systems has received considerable attention from researchers. Previous research includes analyses on magnetic field calculation methods [5][6][7], calculations of magnetic fields to optimize the system parameters [8], electromagnetic field evaluation [9], and coils and shielding design [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Magnetic Field Magnetoinductive Wave Characteristics of a Wireless Power Transfer System

Kang

Zeng

et al. 2022

Sensors

View full text Add to dashboard Cite

This study analyzes the magnetic field wave characteristics of a wireless power transfer (WPT) system from a time-varying view in the nonradiative near field. Phenomena of both forward and backward traveling waves were found. These wave phenomena refer to magnetoinductive waves (MIWs) according to the findings in this study and MIW theory and characteristics. A traditional MIW only appears in the MIW waveguide, which is always constructed by many parallel coils. However, this study analyzed MIWs in a two-coil WPT system, proving that MIWs exist not only in a multi-coil system but also in a basic two-coil system. The velocity of MIWs, a kind of a phase velocity, was calculated. An approximate equation for evaluating wave velocity is proposed. Furthermore, the MIWs in the two-coil WPT system were extended into a more general situation. In this general situation, two separated standing waves were set, and a traveling wave was generated by those two standing waves. The result explains the mechanisms of MIWs in a general situation from a time-varying view. Lastly, a simulation was conducted to verify the accuracy of the study. The results demonstrated that MIWs exist, and the approximate equation is correct. This study presents a novel view on the mechanisms of the WPT system from a wave view.

show abstract

Modified tri-axial square Helmholtz coil for omnidirectional wireless power transfer

Liu

Chen

et al. 2022

Electr Eng

View full text Add to dashboard Cite

Optimized 3-D Polarized H-Field Forming for Orientation-Insensitive Wireless Power Transfer Systems

Cited by 10 publications

References 19 publications

Efficiency Optimization of Multiple Coil Wireless Power Transfer System based on Adaptive Impedance Matching Network

Efficiency Optimization of Multiple Coil Wireless Power Transfer System based on Adaptive Impedance Matching Network

Analysis of the Magnetic Field Magnetoinductive Wave Characteristics of a Wireless Power Transfer System

Modified tri-axial square Helmholtz coil for omnidirectional wireless power transfer

Contact Info

Product

Resources

About