Natural Frequency Optimization of Wireless Power Systems on Power Transmission Lines
Optimizing the natural frequency is crucial for dc-to-load efficient wireless power transfer (WPT) applications on high voltage (HV) power transmission lines. However, a comprehensive optimization approach with the coupling factor and the losses on power electronics both taken into consideration is...
| Main Authors: | , , , , , |
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| Format: | Article |
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IEEE
2018-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8307386/ |
| _version_ | 1818618310349029376 |
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| author | Hong Zhou Xingran Gao Jingang Lai Wenshan Hu Qijun Deng Dongguo Zhou |
| author_facet | Hong Zhou Xingran Gao Jingang Lai Wenshan Hu Qijun Deng Dongguo Zhou |
| author_sort | Hong Zhou |
| collection | DOAJ |
| description | Optimizing the natural frequency is crucial for dc-to-load efficient wireless power transfer (WPT) applications on high voltage (HV) power transmission lines. However, a comprehensive optimization approach with the coupling factor and the losses on power electronics both taken into consideration is still in absence. By modeling losses dissipated on various parts, including the class-D inverter, the rectifier, and the resonant loops, a numerical approach is proposed in this paper to evaluate the optimal natural frequency for maximum dc-to-end efficiency. As the system efficiency is also affected by the operating frequency, which is resilient for practical operation, practical operating strategies are applied to determine the working parameters. Furthermore, considering that the HV WPT systems may work with various coupling factors, optimal natural frequencies for various coupling factors are analyzed and compared. Several groups of experiments are conducted to verify the effectiveness of the proposed numerical approach. Experimental results show that the approach can effectively predict the optimal natural frequency. When compared with the cases where the natural frequency is 100 or 600 kHz, an efficiency enhancement of about 20% can be achieved using the optimized natural frequency. When compared with the cases where the natural frequency is optimal for maximum Q value, an efficiency of 9% can still be achieved for loosely coupled occasions. |
| first_indexed | 2024-12-16T17:19:33Z |
| format | Article |
| id | doaj.art-0c16444ec57943499210173a52f0a9f4 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-16T17:19:33Z |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-0c16444ec57943499210173a52f0a9f42022-12-21T22:23:12ZengIEEEIEEE Access2169-35362018-01-016140381404710.1109/ACCESS.2018.28122068307386Natural Frequency Optimization of Wireless Power Systems on Power Transmission LinesHong Zhou0Xingran Gao1https://orcid.org/0000-0001-5144-8575Jingang Lai2https://orcid.org/0000-0003-0487-4445Wenshan Hu3https://orcid.org/0000-0002-1341-5921Qijun Deng4Dongguo Zhou5Department of Automation, Wuhan University, Wuhan, ChinaDepartment of Automation, Wuhan University, Wuhan, ChinaSchool of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, ChinaDepartment of Automation, Wuhan University, Wuhan, ChinaDepartment of Automation, Wuhan University, Wuhan, ChinaDepartment of Automation, Wuhan University, Wuhan, ChinaOptimizing the natural frequency is crucial for dc-to-load efficient wireless power transfer (WPT) applications on high voltage (HV) power transmission lines. However, a comprehensive optimization approach with the coupling factor and the losses on power electronics both taken into consideration is still in absence. By modeling losses dissipated on various parts, including the class-D inverter, the rectifier, and the resonant loops, a numerical approach is proposed in this paper to evaluate the optimal natural frequency for maximum dc-to-end efficiency. As the system efficiency is also affected by the operating frequency, which is resilient for practical operation, practical operating strategies are applied to determine the working parameters. Furthermore, considering that the HV WPT systems may work with various coupling factors, optimal natural frequencies for various coupling factors are analyzed and compared. Several groups of experiments are conducted to verify the effectiveness of the proposed numerical approach. Experimental results show that the approach can effectively predict the optimal natural frequency. When compared with the cases where the natural frequency is 100 or 600 kHz, an efficiency enhancement of about 20% can be achieved using the optimized natural frequency. When compared with the cases where the natural frequency is optimal for maximum Q value, an efficiency of 9% can still be achieved for loosely coupled occasions.https://ieeexplore.ieee.org/document/8307386/Wireless power transfernatural frequency optimizationefficiency optimization |
| spellingShingle | Hong Zhou Xingran Gao Jingang Lai Wenshan Hu Qijun Deng Dongguo Zhou Natural Frequency Optimization of Wireless Power Systems on Power Transmission Lines IEEE Access Wireless power transfer natural frequency optimization efficiency optimization |
| title | Natural Frequency Optimization of Wireless Power Systems on Power Transmission Lines |
| title_full | Natural Frequency Optimization of Wireless Power Systems on Power Transmission Lines |
| title_fullStr | Natural Frequency Optimization of Wireless Power Systems on Power Transmission Lines |
| title_full_unstemmed | Natural Frequency Optimization of Wireless Power Systems on Power Transmission Lines |
| title_short | Natural Frequency Optimization of Wireless Power Systems on Power Transmission Lines |
| title_sort | natural frequency optimization of wireless power systems on power transmission lines |
| topic | Wireless power transfer natural frequency optimization efficiency optimization |
| url | https://ieeexplore.ieee.org/document/8307386/ |
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