Effects of coil misalignment in a four coil implantable wireless power transfer system

Varghese, Benny J.; Bobba, Phaneendra Babu; Kavitha, M.

doi:10.1109/poweri.2016.8077155

Cited by 21 publications

(15 citation statements)

References 6 publications

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“…Radiative far-field (RFF) WPT relies on the electromagnetic coupling of an RX antenna positioned at a large separation distance (d >> λ) from the TX antenna. Compared with NRIC and NRMRC, this transfer technique demonstrates robustness against misalignment of the TX and RX coils [162,163]. RFF WPT has been studied extensively over the last decade in free-space [164][165][166][167].…”

Section: Link Designmentioning

confidence: 99%

Wireless Power Transfer Techniques for Implantable Medical Devices: A Review

Khan

Pavuluri

Cummins

et al. 2020

Sensors

220

109

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Wireless power transfer (WPT) systems have become increasingly suitable solutions for the electrical powering of advanced multifunctional micro-electronic devices such as those found in current biomedical implants. The design and implementation of high power transfer efficiency WPT systems are, however, challenging. The size of the WPT system, the separation distance between the outside environment and location of the implanted medical device inside the body, the operating frequency and tissue safety due to power dissipation are key parameters to consider in the design of WPT systems. This article provides a systematic review of the wide range of WPT systems that have been investigated over the last two decades to improve overall system performance. The various strategies implemented to transfer wireless power in implantable medical devices (IMDs) were reviewed, which includes capacitive coupling, inductive coupling, magnetic resonance coupling and, more recently, acoustic and optical powering methods. The strengths and limitations of all these techniques are benchmarked against each other and particular emphasis is placed on comparing the implanted receiver size, the WPT distance, power transfer efficiency and tissue safety presented by the resulting systems. Necessary improvements and trends of each WPT techniques are also indicated per specific IMD.

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Section: Link Designmentioning

confidence: 99%

Wireless Power Transfer Techniques for Implantable Medical Devices: A Review

Khan

Pavuluri

Cummins

et al. 2020

Sensors

220

109

View full text Add to dashboard Cite

show abstract

“…IPT system needs high frequency for PTE. Meanwhile, it uses high frequency [26], the power factor (PF) is going to be smaller because of more inductive impedance [27]. Resistive impedance needs additional capacitive [28].…”

Section: Fig 3 -Flux Magnet Coupling Coilmentioning

confidence: 99%

Energy Efficiency Analysis through Misalignment on New Design of Hexagonal Coil Array in Wireless Power Transfer

Hidayat

Mahardiko

2020

IJIE

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Nowadays, the transportation changes are happening in the Electric Vehicle (EV). Changes are made from cable to Wireless Power Transfer (WPT) as a solution. Current state of the implementation, there is still a misalignment on Power Transfer Efficiency (PTE) because of parking behavior. To overcome the problem, we propose new coil design for better optimization of the PTE. In addition, the new design has better size reduction of receiver (Rx) coil. Our experimental research is about to simulate Rx and transmitter (Tx) designs in simple and small scale of parking situations. The results show that an incremental PTE in the center of the coil, an incremental PTE during misalignment on a radius array, and an incremental PTE during misalignment tangential boundary. We conclude that overall better PTE is achieved compared to single coil design and circular coil arrays.

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“…Wireless power transfer (WPT) technology is a promising approach of transferring energy from source to load without physical connection. This technology has been used for a variety of applications including biomedical implants, mining applications, underwater power supplies and electric vehicles with advantages among others not affected by ice, water or other chemicals [1], [2].…”

Section: Introductionmentioning

confidence: 99%

“…The existing WPT technology is highly sensitive to the angular and lateral coil misalignment [17]. Recent research with 7 array circle coil design for the transmitter and circle coil receiver can reduce load on EV without reducing the efficiency [2] shown in Figure 1. Misalignment in tangential boundary area causes a drop in efficiency [19]- [20].…”

Section: Introductionmentioning

confidence: 99%

Improvement of power transfer efficiency of hexagonal coil arrays in misalignment conditions

Devano

Hidayat

Alaydrus

2021

IJEECS

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<span>Wireless charging by transferring energy between two objects using electromagnetic fields commonly called Wireless power transfer is an alternative technology that is physically installed in an electric vehicle (EV) to charge. Parking alignment is a very important factor in driver behavior that affects Power transfer efficiency (PTE). The proposed hexagonal coil array design in this experiment is to optimize PTE and receiver coil size. The experimental results show that PTE in the tangential boundary plane Misalignment increases by 5-10% when compared to coil array circles and increases by 82% when compared to single coil circles. </span>

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Effects of coil misalignment in a four coil implantable wireless power transfer system

Cited by 21 publications

References 6 publications

Wireless Power Transfer Techniques for Implantable Medical Devices: A Review

Wireless Power Transfer Techniques for Implantable Medical Devices: A Review

Energy Efficiency Analysis through Misalignment on New Design of Hexagonal Coil Array in Wireless Power Transfer

Improvement of power transfer efficiency of hexagonal coil arrays in misalignment conditions

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