Optimal Terminations for a Single-Input Multiple-Output Resonant Inductive WPT Link

Monti, Giuseppina; Mongiardo, M.; Minnaert, Ben; Costanzo, Alessandra; Tarricone, Luciano

doi:10.3390/en13195157

Cited by 9 publications

(6 citation statements)

References 31 publications

(56 reference statements)

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“…This experiment consists in executing a measurement in a single specific deep sensor node of the network branch. As mentioned in [ 17 ], the received energy in the sensor nodes is less as depth increases. Therefore, the worst corner case is defined by the single shot measurement of the deepest sensor node.…”

Section: Methodsmentioning

confidence: 99%

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A Novel Charging Method for Underwater Batteryless Sensor Node Networks

Abril

Sosa

et al. 2021

Sensors

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In this paper, we present a novel charging method for underwater batteryless sensor node networks. The target application is a practical underwater sensor network for oceanic fish farms. The underwater sections of the network use a wireless power transfer system based on the ISO 11784/11785 HDX standard for supplying energy to the batteryless sensor nodes. Each sensor has an accumulator capacitor, which is charged for voltage supplying to the sensor node. A new distributed charging scheme is proposed and discussed in detail to reduce the required time to charge all sensor nodes of the underwater sections. One important key is its decentralized control of the charging process. The proposal is based on the self disconnection ability of each sensor node from the charging network. The second important key is that the hardware implementation of this new feature is quite simple and only requires to include a minimal circuitry in parallel to the current sensor node antenna while the rest of the sensor network remains unaltered. The proposed charging scheme is evaluated using real corner cases from practical oceanic fish farms sensor networks. The results from experiments demonstrate that it is possible to charge up to 10 sensor nodes which is the double charging capability than previous research presented. In the same conditions as the approach found in the literature, it represents reaching an ocean depth of 60 m. In terms of energy, in case of an underwater network with 5 sensors to reach 30 m deep, the proposed charging scheme requires only a 25% of the power required using the traditional approach.

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Section: Methodsmentioning

confidence: 99%

“…The optimal load to maximize the efficiency of a single input multiple output WPT (SIMO–WPT) system is presented in [ 17 ]. The objective of the authors requires that the load of the systems to charge varies depending on the total number of systems present in the charging area.…”

Section: Introductionmentioning

confidence: 99%

A Novel Charging Method for Underwater Batteryless Sensor Node Networks

Abril

Sosa

et al. 2021

Sensors

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“…It was found [7] that, for a given SIMO IPT-system the efficiency η is maximized when the load impedances Z L,n = R L,n + jX L,n are given by (n = 1, . .…”

Section: Inductive Simo Systemmentioning

confidence: 99%

Analysis of Capacitive Wireless Power Transfer SIMO Systems based on the Duality Principle

Minnaert

Monti

Costanzo

et al. 2021

2021 XXXIVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)

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Inductive wireless power transfer is a more mature technology than capacitive wireless transfer. The aim of this work is to illustrate the duality principle as tool to transfer results from the inductive into the capacitive wireless power research. The efficiency maximization by varying the loads for a Single-Input Multiple-Output system is considered to exemplify this principle, and to highlight some limitations.

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“…However, the results reported in [24] are derived assuming that all the couplings among the transmitters and the receivers are purely inductive; this being equivalent to assume that the conductivity of the propagation channel is negligibly small. This limitation has overcome in [25,26], where the solution for maximizing the efficiency is derived from a generalized eigenvalue problem. In [25] the case of a resonant inductive WPT link in SIMO configuration is solved.…”

Section: Introductionmentioning

confidence: 99%

“…This limitation has overcome in [25,26], where the solution for maximizing the efficiency is derived from a generalized eigenvalue problem. In [25] the case of a resonant inductive WPT link in SIMO configuration is solved. In [26] the general solving equation is derived for a generic multi-port network representative of a generic WPT link.…”

Section: Introductionmentioning

confidence: 99%

Multiple Input Multiple Output Resonant Inductive WPT Link: Optimal Terminations for Efficiency Maximization

et al. 2021

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In this paper a general-purpose procedure for optimizing a resonant inductive wireless power transfer link adopting a multiple-input-multiple-output (MIMO) configuration is presented. The wireless link is described in a general–purpose way as a multi-port electrical network that can be the result of either analytical calculations, full–wave simulations, or measurements. An eigenvalue problem is then derived to determine the link optimal impedance terminations for efficiency maximization. A step-by-step procedure is proposed to solve the eigenvalue problem using a computer algebra system, it provides the configuration of the link, optimal sources, and loads for maximizing the efficiency. The main advantage of the proposed approach is that it is general: it is valid for any strictly–passive multi–port network and is therefore applicable to any wireless power transfer (WPT) link. To validate the presented theory, an example of application is illustrated for a link using three transmitters and two receivers whose impedance matrix was derived from full-wave simulations.

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Optimal Terminations for a Single-Input Multiple-Output Resonant Inductive WPT Link

Cited by 9 publications

References 31 publications

A Novel Charging Method for Underwater Batteryless Sensor Node Networks

A Novel Charging Method for Underwater Batteryless Sensor Node Networks

Analysis of Capacitive Wireless Power Transfer SIMO Systems based on the Duality Principle

Multiple Input Multiple Output Resonant Inductive WPT Link: Optimal Terminations for Efficiency Maximization

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