Analysis and optimisation of three‐coil wireless power transfer systems

Abatti, Paulo José; Miranda, Caio M. de; Silva, Márcio A.P. da; Pichorim, Sérgio Francisco

doi:10.1049/iet-pel.2016.0492

Cited by 29 publications

(17 citation statements)

References 28 publications

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“…The size of transmitter coil X is 2a × 2a, while receiver is 2b × 2b. Based on Neumann's formula [22,23], the mutual inductance of transmitter coil X and receiver can be written as follows:…”

Section: Analysis Transmitting State Between Transmitter and Receivermentioning

confidence: 99%

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Modeling and Experimental Analysis of Three-Dimensional Cross Coil Structure for Misaligned Wireless Power Transfer System

Song¹,

An²,

Li³

et al. 2020

PIER C

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The coaxiality of the transmitter and receiver has a significant impact on the efficiency in a wireless power transfer system. In order to keep high system efficiency, a novel coil structure is studied in this paper. Several plane coils are crossed to make up a three-dimensional coil structure in the transmitter, which will make sure the system in the state of strong magnetic field coupling. In the theory part, the magnetic field equation of different relationships between transmitter and receiver is deducted in detail. In the simulation part, the performance of the three-dimensional coil structure has been studied. The simulation results show that the new coil structure can generate a rotating magnetic field, and the rotating magnetic field will keep the system in the state of the strong magnetic field coupling in the simulation model. In the experimental part, the three-dimensional coil structure has been compared to a plane coil structure. The experimental results show that the efficiency of the three-dimensional coil structure is increased above 10% in the misalignment situation. The simulated and experimental results show that the new three-dimensional coil structure has a better performance in the misalignment situation than the plane coil structure in a wireless power transfer system.

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Section: Analysis Transmitting State Between Transmitter and Receivermentioning

confidence: 99%

“…11. The quality factor Q of the transmitter coil is Q = ωL r (23) Here, ω is the frequency of the resonance circuit. L is the inductance of transmitter coil.…”

Section: D Cross Coil Structure In the Transmittermentioning

confidence: 99%

Modeling and Experimental Analysis of Three-Dimensional Cross Coil Structure for Misaligned Wireless Power Transfer System

Song¹,

An²,

Li³

et al. 2020

PIER C

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“…Two important parameters that are useful to study the half-bridge transistors commutations are the time delay and the peak value of the input current i 1 , namely t 1 and I 1m , respectively. They can easily be calculated from (17) and (18) as follows:…”

Section: Non-resonant Ipt Converter With Full-wave Rectifiermentioning

confidence: 99%

“…As conclusion, IPT systems are highly reactive circuits, which usually require compensation to decrease rms currents and increase the efficiency. Most of topologies studied in the literature are based on resonant converters, which use serial, parallel and serialparallel compensation circuits to improve IPT system performance [8][9][10][11][12][13][14][15][16][17][18][19]. These converters require extra elements, thus increasing the complexity and possibly decreasing the efficiency when operating out of resonance.…”

Section: Introductionmentioning

confidence: 99%

Analysis, design and evaluation of a zero‐voltage‐switching non‐resonant converter for IPT applications

Alonso

Wang

Yao

et al. 2019

IET Power Electronics

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This study presents the analysis, design and evaluation of a non-resonant converter for inductive power transfer (IPT) applications that provides zero-voltage-switching operation. The thesis of this work is that in many low-cost applications, compensation circuits used to provide resonant operation in IPT systems can be avoided, greatly simplifying the circuit and providing suitable operation and good efficiency. For this, available tools are a correct design of the converter in terms of switching frequency and output rectifier stage in order to achieve the required input-output characteristics. In order to achieve these goals, a thorough analysis of the non-resonant IPT conversion system is carried out in this study, providing the required tools for a proper study and design of the system. Experimental results from a commercial IPT transmitter/receiver arrangement are provided in order to verify the theoretical study.

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“…(1) the constant oscillation period of oscillation attenuation signals [18], (2) the characteristics of inductive coupling WPT [19,20], (3) the relationship between sensitive resistances and environmental parameters [21].…”

Section: Introductionmentioning

confidence: 99%

Passive Wireless Measurement System Based on Wireless Power Transfer Technology

Zheng

Dai

et al. 2019

Electronics

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This paper presents a passive wireless measurement system based on wireless power transfer (WPT) technology. It does not require separate information and power transmission circuits. The data receiver only needs to send a short signal to the data collector through WPT, and then the information of the measured environment can be obtained by analyzing the feedback signal from the data collector. Three concepts are included in this system, namely (1) the constant oscillation period of oscillation attenuation waveforms; (2) the characteristics of inductive coupling WPT; and (3) the relationship between sensitive resistances and environmental parameters. It is very suitable for measuring the parameters in an internal or closed space. The data collector is small in size and simple in structure, and no power is needed. It has stable performance after implantation and can be used permanently. Results obtained from simulations and experiments are included. They verify the measurement process and measurement results meet the requirements of passive wireless measurement, and the measurement error is less than 1.5%.

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Analysis and optimisation of three‐coil wireless power transfer systems

Cited by 29 publications

References 28 publications

Modeling and Experimental Analysis of Three-Dimensional Cross Coil Structure for Misaligned Wireless Power Transfer System

Modeling and Experimental Analysis of Three-Dimensional Cross Coil Structure for Misaligned Wireless Power Transfer System

Analysis, design and evaluation of a zero‐voltage‐switching non‐resonant converter for IPT applications

Passive Wireless Measurement System Based on Wireless Power Transfer Technology

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