Investigations on Capacitor Compensation Topologies Effects of Different Inductive Coupling Links Configurations

Jamal, Norezmi; Saat, Shakir; Yusmarnita, Y.; Zaid, Thoriq; Isa, Azmi Awang Md

doi:10.11591/ijpeds.v6.i2.pp274-281

Cited by 13 publications

(13 citation statements)

References 18 publications

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“…(1) According to [24][25][26][27][28] the SP topology ensures greater power transfer efficiency than the other topologies in WPT applications. (2) The serial topology in the transmitter circuit is appropriate with the Class-E power amplifier topology since the chosen Class-E power amplifier has a tuning capacitor in parallel and a tuning capacitor in series [29,30] reducing the complexity of the system.…”

Section: Equivalent Electrical Circuit Of the Proposed Ric Wpt Systemmentioning

confidence: 99%

A Modified Wireless Power Transfer System for Medical Implants

et al. 2019

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Wireless Power Transfer (WPT) is a promising technique, yet still an experimental solution, to replace batteries in existing implants and overcome the related health complications. However, not all techniques are adequate to meet the safety requirements of medical implants for patients. Ensuring a compromise between a small form factor and a high Power Transfer Efficiency (PTE) for transcutaneous applications still remains a challenge. In this work, we have used a resonant inductive coupling for WPT and a coil geometry optimization approach to address constraints related to maintaining a small form factor and the efficiency of power transfer. Thus, we propose a WPT system for medical implants operating at 13.56 MHz using high-efficiency Complementary Metal Oxide-Semiconductor (CMOS) components and an optimized Printed Circuit Coil (PCC). It is divided into two main circuits, a transmitter circuit located outside the human body and a receiver circuit implanted inside the body. The transmitter circuit was designed with an oscillator, driver and a Class-E power amplifier. Experimental results acquired in the air medium show that the proposed system reaches a power transfer efficiency of 75.1% for 0.5 cm and reaches 5 cm as a maximum transfer distance for 10.67% of the efficiency, all of which holds promise for implementing WPT for medical implants that don’t require further medical intervention, and without taking up a lot of space.

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Section: Equivalent Electrical Circuit Of the Proposed Ric Wpt Systemmentioning

confidence: 99%

A Modified Wireless Power Transfer System for Medical Implants

et al. 2019

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“…This section presents all circuits models topologies for inductive coupling systems for biomedical application, there are four different choices of resonant inductive coupling topologies: serial-to-parallel (SP), parallel to-serial (PS), serial-to-serial (SS) and parallel-to-parallel (PP) [8,9], as shown in Figure 2, respectively. The mathematical models to calculate geometrical parameters of the coils and the wireless energy transfer efficiency for powering bio-implanted devices are presented.…”

Section: Inductive Link For Biomedical Implantable Systems 21 Resonmentioning

confidence: 99%

Design and Optimization of Inductively Coupled Spiral Square Coils for Bio-Implantable Micro-System Device

Lakhdari¹,

Mekkakia-Maaza²,

Dekmous³

2019

IJECE

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Due to the development of biomedical microsystems technologies, the use of wireless power transfer systems in biomedical application has become very largely used for powering the implanted devices. The wireless power transfer by inductive resonance coupling link, is a technic for powering implantable medical devices<strong> </strong>(IMDs) between the external and implanted circuits. In this paper we describe the design of an inductive resonance coupling link using for powering small bio-implanted devices such as implantable bio-microsystem, peacemaker and cochlear implants. We present the reduced design and an optimization of small size obtained spiral coils of a 9.5 mm<sup>2</sup> implantable device with an operating frequency of 13.56 MHz according to the industrial scientific-medical (ISM). The model of the inductive coupling link based on spiral square coils design is developed using the theoretical analysis and optimization geometry of an inductive link. For a mutual distance between the two coils at 10mm, the power transfer efficiency is about 79% with , coupling coefficient of 0.075 and a mutual inductance value of 2µH. In comparison with previous works, the results obtained in this work showed better performance such as the weak inter coils distance, the hight efficiency power transfer and geometry.

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“…Figure 3. Block diagram of the Class E amplifier with impedance matching resonant circuit [8] According to [19], [20] there are four types of impedance matching networks namely and ; see Figure 4. [19], [20].…”

Section: Impedance Matching Networkmentioning

confidence: 99%

“…As proved and explained in previous sections, the aluminium sheets' size for the CPT system is getting smaller by the existence of an impedance matching network, as shown in Figure 12. This is due to the recalculation of components values by using equations (8)(9)(10)(11)(12)(13)(14)(15) and by adding an extra capacitor as impedance matching, the desired output is achieved and maintained with smaller size of capacitive plates. The value of the capacitive coupling is initially 0.21m x 0.24m, which is equal to 4.07nF.…”

Section: Aluminium Sheets As Capacitive Couplingsmentioning

confidence: 99%

“…Other than CPT, Inductive Power Transfer (IPT) [1], [2] and Acoustic Energy Transfer (AET) are also available [3], [4], [5]. The major difference of these types of wireless power transfer system is in terms of the coupling between transmitter and receiver whereby CPT uses electric field propagation [6], [7] while IPT uses magnetic field transfer [8], [9] and propagation of sound waves is the method used in AET [10], [4].…”

Section: Introductionmentioning

confidence: 99%

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Design and Analysis of Capacitive Power Transfer System with and without the Impedance Matching Circuit

Rahman¹,

Saat²,

Yusop³

et al. 2017

IJPEDS

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This paper presents the design and analysis of a relatively new wireless power transfer technique using capacitive coupling, named Capacitive power transfer (CPT). In general, CPT system has been introduced as an attractive alternative to the former inductive coupling method. This is because CPT uses lesser number of components, simpler topology, enhanced EMI performance and better strength to surrounding metallic elements. In this work, aluminium sheet is used as a capacitive coupling at transmitter and receiver side. Moreover, a Class-E resonant inverter together with π1a impedance matching network has been proposed because of its ability to perform the dc-to-ac inversion well. It helps the CPT system to achieve maximum power transfer. The CPT system is designed and simulated by using MATLAB/Simulink software. The validity of the proposed concept is then verified by conducting a laboratory experimental of CPT system. The proposed system able to generate a 9.5W output power through a combined interface capacitance of 2.44nF, at an operating frequency of 1MHz, with 95.10% efficiency. The proposed CPT system with impedance matching network also allows load variation in the range of 20% from its nominal value while maintaining the efficiency over 90%. Keyword:Aluminum sheet Capacitive power transfer MATLAB simulink Wireless power transfer impedance matching

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Investigations on Capacitor Compensation Topologies Effects of Different Inductive Coupling Links Configurations

Cited by 13 publications

References 18 publications

A Modified Wireless Power Transfer System for Medical Implants

A Modified Wireless Power Transfer System for Medical Implants

Design and Optimization of Inductively Coupled Spiral Square Coils for Bio-Implantable Micro-System Device

Design and Analysis of Capacitive Power Transfer System with and without the Impedance Matching Circuit

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