Design and performance analysis of class-e double sided lc compensation topology for CPT system efficiency improvement

Nowadays, Capacitive Power Transfer (CPT) is becoming an increasingly popular technology in the wireless charging field thus attracting the attention of many researchers. Although various research has been conducted with the aim of improving the performance of the system, there is still room for imp...

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Main Author:	Cheok, Yan Qi
Format:	Thesis
Language:	English English
Published:	2023
Subjects:	T Technology (General)
Online Access:	http://eprints.utem.edu.my/id/eprint/27694/1/Design%20and%20performance%20analysis%20of%20class-e%20double%20sided%20lc%20compensation%20topology%20for%20CPT%20system%20efficiency%20improvement.pdf http://eprints.utem.edu.my/id/eprint/27694/2/Design%20and%20performance%20analysis%20of%20class-e%20double%20sided%20lc%20compensation%20topology%20for%20CPT%20system%20efficiency%20improvement.pdf
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spelling	my-utem-ep.276942024-11-12T08:56:48Z Design and performance analysis of class-e double sided lc compensation topology for CPT system efficiency improvement 2023 Cheok, Yan Qi T Technology (General) TK Electrical engineering. Electronics Nuclear engineering Nowadays, Capacitive Power Transfer (CPT) is becoming an increasingly popular technology in the wireless charging field thus attracting the attention of many researchers. Although various research has been conducted with the aim of improving the performance of the system, there is still room for improvement to be made to further optimize the efficiency of the CPT system transmission. It is well known that the CPT system’s efficiency and output power are limited when the transfer distance or gap distance between metal electrodes increases due to any misalignment of capacitive coupling plates or changes in load resistance. Therefore, this thesis proposed the development of a CPT system with high efficiency for low power contactless charging applications. Initially, the thesis begins by designing a Class-E resonant inverter that can provide high-frequency switching capability to increase the power of the system. The Class-E resonant inverter satisfies the soft-switching condition through parameter design thus improving the system’s efficiency. Next, the output performance is analyzed by observing the zero-voltage switching (ZVS) condition, output power and efficiency of the system. Due to the characteristics of the Class-E resonant inverter which is sensitive to the circuit parameters variation, the π1b impedance matching circuit is included in the design to enable the power transfer efficiently between transmitter and receiver. In this part, the mathematical analysis of the sensitivity of the system’s output power with respect to the load variation was introduced. In order to have a wider range of load variations, Class-E combined with double-sided LC matching circuits such as LCCL circuit and LCLC circuit were incorporated into the proposed approach. By switching the position of inductor and capacitor in LC matching at the receiver side of Class-E LCCL circuit, Class-E LCLC circuit was formed. The output performances of both circuits were analyzed and compared based on load variations, duty cycle variations and gap distance variations. MATLAB Simulink was used in this work to design and simulate all the aforementioned circuits. The design with the best output performance was selected to construct the CPT system. A 10W prototype was constructed which is operated at 1mm air gap with an efficiency of more than 84.6%. In conclusion, the research outcomes demonstrate the potential of CPT as an emerging wireless power transfer solution, as well as the theoretical and practical design methods to establish a solid foundation for future CPT research and development. 2023 Thesis http://eprints.utem.edu.my/id/eprint/27694/ http://eprints.utem.edu.my/id/eprint/27694/1/Design%20and%20performance%20analysis%20of%20class-e%20double%20sided%20lc%20compensation%20topology%20for%20CPT%20system%20efficiency%20improvement.pdf text en public http://eprints.utem.edu.my/id/eprint/27694/2/Design%20and%20performance%20analysis%20of%20class-e%20double%20sided%20lc%20compensation%20topology%20for%20CPT%20system%20efficiency%20improvement.pdf text en validuser https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=123705 mphil masters Universiti Teknikal Malaysia Melaka Faculty of Electronic and Computer Engineering Yusop, Yusmarnita
institution	Universiti Teknikal Malaysia Melaka
collection	UTeM Repository
language	English English
advisor	Yusop, Yusmarnita
topic	T Technology (General) T Technology (General)
spellingShingle	T Technology (General) T Technology (General) Cheok, Yan Qi Design and performance analysis of class-e double sided lc compensation topology for CPT system efficiency improvement
description	Nowadays, Capacitive Power Transfer (CPT) is becoming an increasingly popular technology in the wireless charging field thus attracting the attention of many researchers. Although various research has been conducted with the aim of improving the performance of the system, there is still room for improvement to be made to further optimize the efficiency of the CPT system transmission. It is well known that the CPT system’s efficiency and output power are limited when the transfer distance or gap distance between metal electrodes increases due to any misalignment of capacitive coupling plates or changes in load resistance. Therefore, this thesis proposed the development of a CPT system with high efficiency for low power contactless charging applications. Initially, the thesis begins by designing a Class-E resonant inverter that can provide high-frequency switching capability to increase the power of the system. The Class-E resonant inverter satisfies the soft-switching condition through parameter design thus improving the system’s efficiency. Next, the output performance is analyzed by observing the zero-voltage switching (ZVS) condition, output power and efficiency of the system. Due to the characteristics of the Class-E resonant inverter which is sensitive to the circuit parameters variation, the π1b impedance matching circuit is included in the design to enable the power transfer efficiently between transmitter and receiver. In this part, the mathematical analysis of the sensitivity of the system’s output power with respect to the load variation was introduced. In order to have a wider range of load variations, Class-E combined with double-sided LC matching circuits such as LCCL circuit and LCLC circuit were incorporated into the proposed approach. By switching the position of inductor and capacitor in LC matching at the receiver side of Class-E LCCL circuit, Class-E LCLC circuit was formed. The output performances of both circuits were analyzed and compared based on load variations, duty cycle variations and gap distance variations. MATLAB Simulink was used in this work to design and simulate all the aforementioned circuits. The design with the best output performance was selected to construct the CPT system. A 10W prototype was constructed which is operated at 1mm air gap with an efficiency of more than 84.6%. In conclusion, the research outcomes demonstrate the potential of CPT as an emerging wireless power transfer solution, as well as the theoretical and practical design methods to establish a solid foundation for future CPT research and development.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Cheok, Yan Qi
author_facet	Cheok, Yan Qi
author_sort	Cheok, Yan Qi
title	Design and performance analysis of class-e double sided lc compensation topology for CPT system efficiency improvement
title_short	Design and performance analysis of class-e double sided lc compensation topology for CPT system efficiency improvement
title_full	Design and performance analysis of class-e double sided lc compensation topology for CPT system efficiency improvement
title_fullStr	Design and performance analysis of class-e double sided lc compensation topology for CPT system efficiency improvement
title_full_unstemmed	Design and performance analysis of class-e double sided lc compensation topology for CPT system efficiency improvement
title_sort	design and performance analysis of class-e double sided lc compensation topology for cpt system efficiency improvement
granting_institution	Universiti Teknikal Malaysia Melaka
granting_department	Faculty of Electronic and Computer Engineering
publishDate	2023
url	http://eprints.utem.edu.my/id/eprint/27694/1/Design%20and%20performance%20analysis%20of%20class-e%20double%20sided%20lc%20compensation%20topology%20for%20CPT%20system%20efficiency%20improvement.pdf http://eprints.utem.edu.my/id/eprint/27694/2/Design%20and%20performance%20analysis%20of%20class-e%20double%20sided%20lc%20compensation%20topology%20for%20CPT%20system%20efficiency%20improvement.pdf
_version_	1818612048744939520

Design and performance analysis of class-e double sided lc compensation topology for CPT system efficiency improvement

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