A Sleeve-Type Capacitive Power Transfer System With Different Coupling Arrangements for Rotary Application

This paper presents a sleeve-type capacitive power transfer (CPT) system for contactless rotary applications. Sleeve-type capacitive couplers with different coupling arrangements between primary and secondary metal sleeves are proposed in this research, which lead to different coupling characteristi...

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Main Authors: Xue-Ying Wu, Yu-Gang Su, Aiguo Patrick Hu, Lixiang Jackie Zou, Zhe Liu
Format: Article
Language:English
Published: IEEE 2020-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9058654/
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author Xue-Ying Wu
Yu-Gang Su
Aiguo Patrick Hu
Lixiang Jackie Zou
Zhe Liu
author_facet Xue-Ying Wu
Yu-Gang Su
Aiguo Patrick Hu
Lixiang Jackie Zou
Zhe Liu
author_sort Xue-Ying Wu
collection DOAJ
description This paper presents a sleeve-type capacitive power transfer (CPT) system for contactless rotary applications. Sleeve-type capacitive couplers with different coupling arrangements between primary and secondary metal sleeves are proposed in this research, which lead to different coupling characteristics with positive, zero, and negative coupling coefficients. The effect of coupling coefficient variations caused by both the power transfer distance and the ratio between the overlapping length and the height of outer sleeves is analyzed. Combining the sleeve-type coupler, the CPT system is developed with a double-sided LC-compensated network and half-bridge inverter. For the CPT systems with positive and negative coupling coefficients, parameter design methods are presented to determine system parameters to achieve zero phase angle (ZPA) condition under the same output power. Then overall system performances of the CPT systems with local maximum positive and local minimum negative coupling coefficients are analyzed and compared by simulation in MATLAB/Simulink and Maxwell. Finally, an experimental prototype is constructed, which has demonstrated a power efficiency of 85.3% at 100.8 W. Simulation and experimental results show that the CPT system with local minimum negative coupling coefficient has clear advantages in increasing transfer distance, reducing voltage on sleeves, suppressing fringing electric field, and improving power density.
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spelling doaj.art-ef3d9b61124046af889887c30eade5312022-12-21T17:25:44ZengIEEEIEEE Access2169-35362020-01-018691486915910.1109/ACCESS.2020.29863599058654A Sleeve-Type Capacitive Power Transfer System With Different Coupling Arrangements for Rotary ApplicationXue-Ying Wu0Yu-Gang Su1https://orcid.org/0000-0002-7783-0454Aiguo Patrick Hu2Lixiang Jackie Zou3Zhe Liu4College of Automation, Chongqing University, Chongqing, ChinaCollege of Automation, Chongqing University, Chongqing, ChinaDepartment of Electrical, Computer, and Software Engineering, The University of Auckland, Auckland, New ZealandDepartment of Electrical, Computer, and Software Engineering, The University of Auckland, Auckland, New ZealandCollege of Automation, Chongqing University, Chongqing, ChinaThis paper presents a sleeve-type capacitive power transfer (CPT) system for contactless rotary applications. Sleeve-type capacitive couplers with different coupling arrangements between primary and secondary metal sleeves are proposed in this research, which lead to different coupling characteristics with positive, zero, and negative coupling coefficients. The effect of coupling coefficient variations caused by both the power transfer distance and the ratio between the overlapping length and the height of outer sleeves is analyzed. Combining the sleeve-type coupler, the CPT system is developed with a double-sided LC-compensated network and half-bridge inverter. For the CPT systems with positive and negative coupling coefficients, parameter design methods are presented to determine system parameters to achieve zero phase angle (ZPA) condition under the same output power. Then overall system performances of the CPT systems with local maximum positive and local minimum negative coupling coefficients are analyzed and compared by simulation in MATLAB/Simulink and Maxwell. Finally, an experimental prototype is constructed, which has demonstrated a power efficiency of 85.3% at 100.8 W. Simulation and experimental results show that the CPT system with local minimum negative coupling coefficient has clear advantages in increasing transfer distance, reducing voltage on sleeves, suppressing fringing electric field, and improving power density.https://ieeexplore.ieee.org/document/9058654/Wireless power transfercapacitive power transfersleeve-type capacitive couplernegative coupling coefficients
spellingShingle Xue-Ying Wu
Yu-Gang Su
Aiguo Patrick Hu
Lixiang Jackie Zou
Zhe Liu
A Sleeve-Type Capacitive Power Transfer System With Different Coupling Arrangements for Rotary Application
IEEE Access
Wireless power transfer
capacitive power transfer
sleeve-type capacitive coupler
negative coupling coefficients
title A Sleeve-Type Capacitive Power Transfer System With Different Coupling Arrangements for Rotary Application
title_full A Sleeve-Type Capacitive Power Transfer System With Different Coupling Arrangements for Rotary Application
title_fullStr A Sleeve-Type Capacitive Power Transfer System With Different Coupling Arrangements for Rotary Application
title_full_unstemmed A Sleeve-Type Capacitive Power Transfer System With Different Coupling Arrangements for Rotary Application
title_short A Sleeve-Type Capacitive Power Transfer System With Different Coupling Arrangements for Rotary Application
title_sort sleeve type capacitive power transfer system with different coupling arrangements for rotary application
topic Wireless power transfer
capacitive power transfer
sleeve-type capacitive coupler
negative coupling coefficients
url https://ieeexplore.ieee.org/document/9058654/
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