scholarly journals Analysis and design of class E-LCCL compensation circuit topology circuit topology for capacitive power transfer system

2021 ◽  
Vol 12 (2) ◽  
pp. 1265
Author(s):  
Khairul Kamarudin Hasan ◽  
Shakir Saat ◽  
Yusmarnita Yusop ◽  
Masmaria Abdul Majid ◽  
Mohd Sufian Ramli
Keyword(s):  
Supply Voltage ◽  
Consumer Electronics ◽  
Power Transfer ◽  
Circuit Topology ◽  
Analysis And Design ◽  
Switching Losses ◽  
Plate Size ◽  
Experimental Works ◽  
System Prototype ◽  
Class E

<p class="Abstract">This research introduces the analysis and design of Class E-LCCL for capacitive power transfer (CPT) system. The CPT Class-E LCCL system is able to operate at high-frequency with decreased capacitance plate size and at reduced power losses by minimising switching losses. Additionally, the design of a CPT Class-E LCCL power amplifier is less complicated, since it is usually lighter and smaller with comparative intolerance to different circuit variants; hence, enabling the possibility of miniaturising the system. In this work, the capability of the CPT Class-E LCCL CPT system powered by 24 V DC supply voltage while operating at 1 MHz was analysed via experimental works and extensive simulation. Lastly, a CPT Class-E LCCL system prototype was built, generating 10 W output power via a 0.1 cm air gap at a near-perfect efficiency level of 96.68%. These findings could be beneficial for household apparatus, medical implants, and charging consumer electronics.</p>

scholarly journals The design of an efficient class E-LCCL capacitive power transfer system through frequency tuning method

2021 ◽  
Vol 11 (2) ◽  
pp. 1095
Author(s):  
Khairul Kamarudin Hasan ◽  
Shakir Saat ◽  
Yusmarnita Yusop ◽  
Huzaimah Husin ◽  
Nor Diyana Md Sin
Keyword(s):  
Frequency Tuning ◽  
Supply Voltage ◽  
Alternate Current ◽  
Consumer Electronics ◽  
Power Transfer ◽  
Efficient System ◽  
Current Frequency ◽  
Zero Voltage Switching ◽  
Tuning Method ◽  
Class E

In this work, the optimum zero voltage switching (ZVS) of Class E-LCCL capacitive power transfer (CPT) was determined via frequency tuning method. Through this an efficient system can be guanranteed although there is a change in the capacitive plates distance. This study used a Class-E LCCL inverter, as it can operate at a high alternate current frequency, besides producing low switching losses and minimal power losses. Specifically, this study conducted simulations and experiments to analyse the performance of an LCCL CPT System at 1 MHz operating frequency and 24 V DC supply voltage. Using an air gap distance of 0.1 cm, the designed CPT system prototype successfully achieved an output power of 10W and an efficiency of 95.45%. This study also found that by tuning the resonant frequency of the Class E-LCCL system, the optimum ZVS can be obtained although capacitive plate distance was varied from 1-3 cm via experimental. The results of this study could benefit medical implant and portable device development, consumer electronics, and environments that involve electrical hazards.

scholarly journals Design of 2MHz OOK transmitter/receiver for inductive power and data transmission for biomedical implant

2019 ◽  
Vol 9 (4) ◽  
pp. 2779 ◽  
Author(s):  
Abdelali El Boutahiri ◽  
Mounir Ouremchi ◽  
Ahmed Rahali ◽  
Mustapha El Alaoui ◽  
Fouad Farah ◽  
...  
Keyword(s):  
Data Transmission ◽  
Supply Voltage ◽  
Receiver Coil ◽  
Cmos Process ◽  
Power Transfer ◽  
Biomedical Implant ◽  
Transmitter Coil ◽  
Implant System ◽  
Inductive Power ◽  
Class E

<p>In this work a 2 MHz on-off keying (OOK) transmitter/receiver for inductive power and data transmission for biomedical implant system is presented. Inductive link, driven by a Class E power amplifier (PA) is the most PA used to transfer data and power to the internal part of biomedical implant system. Proposed transmitter consists of a digital control oscillator (DCO) and a class E PA which uses OOK modulation to transfer both data and power to a biomedical implant. In proposing OOK transmitter when the transmitter sends binary value “0” the DCO and PA are turned off. With this architecture and 2 MHz carrier wave we have implemented a wireless data and power transfer link which can transmit data with data rate 1Mbps and bit error rate (BER) of 10-5. The efficiency of power transfer is 42% with a 12.7 uH transmitter coil and a 2.4 uH receiver coil and the power delivered to the load is about 104.7 mW. Proposed transmitter is designed for output power 4.1V. OOK receiver consists of an OOK demodulator, powered by rectified and regulated 5V p-p RF signal across the receiver coil. The supply voltage of proposed voltage regulator is 5 V with 9mV/V line regulation of. All circuits proposed in this paper were designed and simulated using Cadence in 0.18 um CMOS process.</p>

scholarly journals Analysis and Design Capacitive Power Transfer (CPT) System for Low Application Using Class-E LCCL Inverter by Investigate Distance between Plates Capacitive.

2020 ◽  
Vol 1529 ◽  
pp. 032094
Author(s):  
Khairul Kamarudin Hasan ◽  
Shakir Saat ◽  
Yusmarnita Yusop ◽  
Huzaimah Husin ◽  
Mohamad Zhafran Hussin ◽  
...  
Keyword(s):  
Power Transfer ◽  
Analysis And Design ◽  
Class E

Performance assessment of class-E inverter for capacitive power transfer system

2017 ◽  
Vol 36 (4) ◽  
pp. 1237-1256 ◽  
Author(s):  
Yusmarnita Yusop ◽  
Mohd. Shakir Md. Saat ◽  
Siti Huzaimah Husin ◽  
Sing Kiong Nguang ◽  
Imran Hindustan
Keyword(s):  
Electromagnetic Interference ◽  
Printed Circuit Board ◽  
Capacitive Coupling ◽  
Circuit Board ◽  
Attractive Alternative ◽  
Power Transfer ◽  
Content Type ◽  
Zero Voltage Switching ◽  
Switching Losses ◽  
Class E

Purpose This paper aims to present a new wireless power transfer technique using capacitive coupling. The capacitive power transfer (CPT) system has been introduced as an attractive alternative to the traditional inductive coupling method. The CPT offers benefits such as simple topology, fewer components, better electromagnetic interference (EMI) performance and robustness to surrounding metallic elements. Design/methodology/approach A class-E inverter together with and without inductor capacitor (LC) matching circuit has been utilised in this work because of its ability to perform the DC-to-AC inversion efficiently with significant reduction in switching losses. The validity of the proposed concept has been verified by conducting a laboratory experiment of the CPT system. Findings The performances for both systems are analysed and evaluated. A 9.7 W output power is generated through a combined interface [printed circuit board (PCB) plate] capacitance of 2.82 nF at an operating frequency of 1 MHz, with 97 per cent efficiency for 0.25 mm coupling gap distance. Originality value An efficient CPT system with class-E LC matching topology is proposed in this paper. With this topology, the zero-voltage switching can be achieved even if the load is different by properly designing the LC matching transformation circuit.

Analysis and Design of EIT-Like Magnetic Coupling Wireless Power Transfer Systems

2021 ◽  
pp. 1-11
Author(s):  
Zhi-Juan Liao ◽  
Qi-Kai Feng ◽  
Chen-Hui Jiang ◽  
Fan Wu ◽  
Chen-Yang Xia ◽  
...  
Keyword(s):  
Magnetic Coupling ◽  
Wireless Power Transfer ◽  
Power Transfer ◽  
Wireless Power ◽  
Analysis And Design
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