Comparison of Spiral and Square Coil Configurations in Wireless Power Transfer System for Contactless Battery Charging

Al-Saadi, Mohammed; Valtchev, Stanimir; Romba, Luis; Gonçalves, José Teixeira; Crăciunescu, Aurelian

doi:10.1109/ev.2019.8892897

Cited by 18 publications

(2 citation statements)

References 8 publications

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“…However, to supply a fixed power of good quality and high efficiency the misalignment should be avoided. A mechanic or magnetic trap have been used by some IWPT systems to avoid the misalignment [25].…”

Section: Misalignmentmentioning

confidence: 99%

Experimental installation of wireless power transfer system based on the series resonance technology

Al-Chlaihawi

Tawafan

Kadhem

2020

IJPEDS

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In this work, we aim to install a wireless power transfer (WPT) system experimentally. Series resonance technology was used to achieve zero-voltage switching (ZVS). We investigated the impact of the primary and secondary resonance frequencies (fp and fd), and inverter frequency switching (fch) on the efficiency (β) and maximum transfer power in a WPT system based on the inductive wireless power transfer (IWPT) technology. An ultrasonic device was utilized as a generator to excite the coil at the primary side. The experimental outcomes showed that there is an optimum unlike fp and fd can be got to match fch. It was found also that there is a trade-off between the power supplied to the load (PRL) and DC-DC efficiency (β). At an air-gap of 5 cm, the obtained results are recorded as follows; the peak recorded system β is 62% that was obtained at fp=19 kHz, fd=fch=24 kHz that is corresponding to 101.88W of PRL; whereas the highest PRL resulted i.e. 244W when fp=19 kHz, fd =24 kHz, fch=21 kHz at 61% of β; in such case, the maximum β* PRL multiplication was achieved i.e. 149. Moreover, the coils’ misalignment was studied. The outcomes showed that the lateral misalignment has worst effect on the PRL and β than the air-gap. The experimental results were validated with simulation ones.

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Section: Misalignmentmentioning

confidence: 99%

Experimental installation of wireless power transfer system based on the series resonance technology

Al-Chlaihawi

Tawafan

Kadhem

2020

IJPEDS

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“…Wireless power transfer plays an important part in BMI systems, as it is free from wires and negates the need for surgery when the battery is depleted. To enhance the resulting powertransfer efficiency and coupling between transmitter and receiver coils of WPT for BMI devices, researchers proposed several techniques and methods: coil geometry [11]- [13] different closed-loop and open-loop power control [14], power amplification [15] , [16] an impedance-matching network [17], [18] , misalignment conditions [19], and coupling configuration [20], [21]. In the biomedical field, WPT is essential as an energy source for biosensing and BMI devices [22] such as vital human-signs monitoring [23], heart-rate sensors [24], capsule endoscopy [25], left ventricular assist devices (LVAD) [26], deep micro-implants [27], and optogenetics applications [28].…”

Section: Introductionmentioning

confidence: 99%

Wireless Power Transfer Based on Spider Web–Coil for Biomedical Implants

Mahmood

Gharghan²,

Mahmood

et al. 2021

IEEE Access

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A biomedical implant (BMI) is a device that allows patients to monitor their health condition at any time and obtain care from any location. However, the functionality of these devices is limited because of their restricted battery capacity, such that a BMI may not attain its full potential. Wireless power transfer technology-based magnetic resonant coupling (WPT-MRC) is considered a promising solution to the problem of restricted battery capacity in BMIs. In this paper, spider web coil-MRC (SWC-MRC) was designed and practically implemented to overcome the restricted battery life in low-power BMIs. A series/parallel (S/P) topology for powering the BMI was proposed in the design of the SWC-MRC. Several experiments were conducted in the lab to investigate the performance of the SWC-MRC system in terms of DC output voltage, power transfer, and transfer efficiency at different resistive loads and distances. The experimental results of the SWC-MRC test revealed that when the Vsource is 30 V, the DC output voltage of 5 V can be obtained at 1 cm. At such a distance (i.e., 1 cm), the SWC-MRC transfer efficiency is 91.86% and 97.91%, and the power transfer is 13.26 W and 23.5 W when 50-and 100-Ω resistive loads were adopted, respectively. A power transfer of 12.42 W and transfer efficiency of 93.38% were achieved at 2 cm for when a 150-Ω resistive load and a Vsource of 35 V were considered. The achieved performance was adequate for charging some BMIs, such as a pacemaker.

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Study on the Performance of a Novel High Lateral Displacement Receiver Coil Based on Cross-Winding Method

Liu

Jiang

Song

et al. 2023

Lecture Notes in Electrical Engineering

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Comparison of Spiral and Square Coil Configurations in Wireless Power Transfer System for Contactless Battery Charging

Cited by 18 publications

References 8 publications

Experimental installation of wireless power transfer system based on the series resonance technology

Experimental installation of wireless power transfer system based on the series resonance technology

Wireless Power Transfer Based on Spider Web–Coil for Biomedical Implants

Study on the Performance of a Novel High Lateral Displacement Receiver Coil Based on Cross-Winding Method

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