Efficiency improvement for magnetic resonance based wireless power transfer with axial-misalignment

Lee, S. G.; Hoang, H.; Choi, Yun Ho; Bien, Franklin

doi:10.1049/el.2012.0012

Cited by 66 publications

(29 citation statements)

References 2 publications

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“…In Ref. 21, an adaptive method was presented to improve the transmission efficiency of the MCR-WPT system with axial misalignment, but the angular misalignment was not considered. This paper focused on the effects of the lateral misalignment and the angular misalignment on the transmission efficiency of the MCR-WPT system.…”

Section: Introductionmentioning

confidence: 99%

Transmission efficiency analysis and optimization of magnetically coupled resonant wireless power transfer system with misalignments

et al. 2018

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Magnetically coupled resonant (MCR) wireless power transfer (WPT) is a promising technology, which has been widely used in many practical applications. In the practical application environment the misalignments between the transmitting coil and the receiving coil can not be avoided, and it will cause a rapid decline in transmission efficiency. So the misalignments have limited the applications of MCR-WPT technology in many fields. The mathematical formula of transmission efficiency with angular misalignment and lateral misalignment was deduced. And the effects of angular misalignment and lateral misalignment on the transmission efficiency were researched by simulation experiments. And the changing regularity of the transmission efficiency with the change of the angular misalignment and lateral misalignment was obtained. The results show that when there is an angular misalignment between the transmitting coil and the receiving coil, the transmission efficiency can be optimized by adjusting the lateral misalignment between the coils. And when there is a lateral misalignment between the coils, the transmission efficiency can be optimized by adjusting the angular misalignment between the coils. An experimental prototype of MCR-WPT system was built, and experiments had been carried out to evaluate the accuracy of the theoretical analysis. Therefore, the study in this paper lay a theoretical foundation for the analysis of WPT in the complex environment, and also provide a useful reference for the design of WPT system.

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Section: Introductionmentioning

confidence: 99%

Transmission efficiency analysis and optimization of magnetically coupled resonant wireless power transfer system with misalignments

et al. 2018

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“…In [13] an optimization technique to improve the efficiency of a WPT system in a lateral misalignment scenario was presented, in which demonstrated 48.4% efficiency was achieved with an adaptive matching network, but did not provide any solution for angular and rotational misalignment. The authors of [14] introduced analytical derivation for nearfield power transfer efficiency of loosely coupled inductive links with lateral and angular coil misalignment for three different coil geometries and scenarios, however this did not provide any solution for lateral, angular and rotational misalignment.…”

Section: Introductionmentioning

confidence: 99%

Orientation insensitive power transfer by magnetic resonance for mobile devices

Jonah¹,

Georgakopoulos²,

Tentzeris³

2013

2013 IEEE Wireless Power Transfer (WPT)

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Abstract-The efficiency of wireless power transfer (WPT) from an orientation insensitive system to a mobile device by strongly coupled magnetic resonance (SCMR) is reported here. This paper compares an optimal loop-based design in standard SCMR systems with misalignment insensitive system (3D and 3-loop structure), which exhibits higher efficiency than typical SCMR devices in several directions in a sphere.

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“…However, [18] did not provide any solution for angular misalignment. Analytical formulations for the power transfer efficiencies of loosely coupled inductive links under lateral and angular coil misalignment were presented in [19].…”

Section: Discussionmentioning

confidence: 99%

“…An optimization technique for improving the efficiency of SCMR systems under lateral misalignment was presented in [18]. Specifically, 48.4% efficiency was achieved by using an adaptive matching network.…”

Section: Discussionmentioning

confidence: 99%

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Optimization of Wireless Power Transfer via Magnetic Resonance in Different Media

Jonah¹

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Efficiency improvement for magnetic resonance based wireless power transfer with axial-misalignment

Cited by 66 publications

References 2 publications

Transmission efficiency analysis and optimization of magnetically coupled resonant wireless power transfer system with misalignments

Transmission efficiency analysis and optimization of magnetically coupled resonant wireless power transfer system with misalignments

Orientation insensitive power transfer by magnetic resonance for mobile devices

Optimization of Wireless Power Transfer via Magnetic Resonance in Different Media

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