Power transmission of a desk with a cord-free power supply

Hatanaka, K.; Sato, F.; Matsuki, H.; Kikuchi, S.; Murakami, Junichi; Kawase, M.; Satoh, T.

doi:10.1109/tmag.2002.803120

Cited by 65 publications

(24 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For example, wireless charging has been applied to electric vehicles [4][5][6] and to supply power to embedded medical equipment [7][8][9]. In addition to this, the wireless charging of intelligent electronic devices is also a popular application [10][11][12], one which has developed into an industry in itself. Meanwhile, charging standards have already been formulated for wireless charging.…”

Section: Introductionmentioning

confidence: 99%

The Design and Optimization of a Wireless Power Transfer System Allowing Random Access for Multiple Loads

Tan

Zhang

Wang³

et al. 2019

Energies

View full text Add to dashboard Cite

As is common in multi-load wireless power transfer (WPT) systems based on series–series compensation topology, the power received by loads and the efficiency of the process are highly sensitive to changes in the number of loads. To guarantee that the power supplied to a load remains stable when other loads access or leave the system, we propose an improved multi-load system for WPT. The new system uses an LCC/S topology (based on inductor–capacitor–inductor or LCL topology) to keep the power received by the loads stable. By comparing two scenarios (ideal and real models based on LCC/S topology), we aim to eliminate cross-coupling between receiving coils by connecting compensating capacitors in series on the receiving side. In this way, the stability of the power received by loads is further improved. Moreover, a method of optimizing control over the efficiency is proposed based on the effect on the overall efficiency of impedance and number of loads. This allows us to optimize the overall efficiency of the system. Finally, a system to verify our theoretical analysis is established and used to show the validity and effectiveness of the proposed system.

show abstract

Section: Introductionmentioning

confidence: 99%

The Design and Optimization of a Wireless Power Transfer System Allowing Random Access for Multiple Loads

Tan

Zhang

Wang³

et al. 2019

Energies

View full text Add to dashboard Cite

show abstract

“…As one of its salient advantages, the power can be transmitted to multiple objectives wirelessly and simultaneously [14,15]; problems of cable entanglement, cable corrosion and number of charging ports are eliminated, which greatly improves charging flexibility and reduces system cost. In multi-objective conditions, however, the fairness of power distribution should be taken into account according to various power demands of loads.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Control of Optimal Power Distribution for Multi-Objective Wireless Charging Systems

et al. 2018

View full text Add to dashboard Cite

This paper proposes an optimal power distribution method for multi-objective wireless power transfer (WPT) systems, aiming to improve the transmission flexibility and satisfy various power demands. Previous studies have barely explored the impact of wide-range and unpredictable variations of load parameters on the performance of multi-channel power transmissions. In this paper, by taking the impact of equivalent impedance, motion, power demand variation and response speed of charging object into consideration, an optimal power distribution scheme with fast response, high stability and high accuracy is proposed to satisfy various power demands from multiple objectives including portable electronics, moving electric vehicles (EVs), batteries and super capacitors, without using any communication networks. The effectiveness of the proposed control scheme is demonstrated by simulation results based on different charging cases and experimental results based on a 10 W prototype.

show abstract

“…A popular choice in literature to increase the freedom of CET device placement and to allow the charging of several devices simultaneously, is by using multiple primary windings [31]. To increase the platforms efficiency, in some systems the primary coils can be individually activated so that only a few primary windings closest to the load device are turned on [32].…”

Section: Introductionmentioning

confidence: 99%

Contactless energy transfer at the bedside featuring an online power optimization strategy

Clercq

Puers

2014

Sensors and Actuators A: Physical

View full text Add to dashboard Cite

a b s t r a c tThis paper introduces the principle of contactless energy transfer to wearable bedside electronics. As a proof of concept, a platform containing a matrix of magnetic energy transmitters has been developed and integrated into a mattress. This system is able to feed one or more wearable sensor nodes, attached to the patient, with the purpose of wirelessly recording vital signals over an extended period of time. Each of these power transmitters is designed to transfer up to 10 mW of power over a maximal distance of 300 mm. Moreover, the platform embeds online optimization software to deal with vertical as well as horizontal sensor node movements. The position and orientation of each freely moving sensor node can be dynamically determined and a local magnetic field, with a matching radiated power level, can be selectively induced in the area where the sensor nodes are positioned. This approach therefore limits the radiation exposure to the patient to the minimum viable level. The prototype is successfully tested in a laboratory set-up.

show abstract

Power transmission of a desk with a cord-free power supply

Cited by 65 publications

References 2 publications

The Design and Optimization of a Wireless Power Transfer System Allowing Random Access for Multiple Loads

The Design and Optimization of a Wireless Power Transfer System Allowing Random Access for Multiple Loads

Analysis and Control of Optimal Power Distribution for Multi-Objective Wireless Charging Systems

Contactless energy transfer at the bedside featuring an online power optimization strategy

Contact Info

Product

Resources

About