Optimized Resonant Network Design for High Energy Transfer Efficiency of the WPT System
This paper proposes an active resonant network based on variable resonant capacitances to improve the operating performance of the LCC-S compensated topology in the wireless power transfer (WPT) system for electric vehicles under coil-misaligned conditions. By adjusting the series and parallel compe...
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| Format: | Article |
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MDPI AG
2023-04-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/12/9/1984 |
| _version_ | 1797602745145884672 |
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| author | Weijie Li Lijun Diao Weiyao Mei Zhonghao Dongye Xuqing Qin Zheming Jin |
| author_facet | Weijie Li Lijun Diao Weiyao Mei Zhonghao Dongye Xuqing Qin Zheming Jin |
| author_sort | Weijie Li |
| collection | DOAJ |
| description | This paper proposes an active resonant network based on variable resonant capacitances to improve the operating performance of the LCC-S compensated topology in the wireless power transfer (WPT) system for electric vehicles under coil-misaligned conditions. By adjusting the series and parallel compensation capacitances on the transmitting side, the output voltage can be kept constant and the energy transfer efficiency can be improved under different coil offsets. The switch-controlled capacitors (SCCs) are used to change the compensation capacitances continuously. To find the proper compensation capacitances to achieve the excellent performance of the system, the optimization algorithm is applied, and the corresponding digital control strategy is described to regulate the equivalent capacitances of SCCs. Experimental results with a 2.7 kW power scale show that the output voltage is constant, and the operating efficiency is always over 90% in the WPT system with an active resonant network under different misalignment conditions. In addition, the system is delivering an equal amount of energy for all misalignments within the range of 80 mm, which improves the expected value of transferred energy by about 29%. |
| first_indexed | 2024-03-11T04:20:58Z |
| format | Article |
| id | doaj.art-3b253460ca324d37ac5eec53d3697104 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-11T04:20:58Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-3b253460ca324d37ac5eec53d36971042023-11-17T22:47:08ZengMDPI AGElectronics2079-92922023-04-01129198410.3390/electronics12091984Optimized Resonant Network Design for High Energy Transfer Efficiency of the WPT SystemWeijie Li0Lijun Diao1Weiyao Mei2Zhonghao Dongye3Xuqing Qin4Zheming Jin5Department of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, ChinaDepartment of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, ChinaDepartment of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, ChinaDepartment of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, ChinaBeijing Hainachuan Automotive Parts Co., Ltd., Beijing 100021, ChinaDepartment of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, ChinaThis paper proposes an active resonant network based on variable resonant capacitances to improve the operating performance of the LCC-S compensated topology in the wireless power transfer (WPT) system for electric vehicles under coil-misaligned conditions. By adjusting the series and parallel compensation capacitances on the transmitting side, the output voltage can be kept constant and the energy transfer efficiency can be improved under different coil offsets. The switch-controlled capacitors (SCCs) are used to change the compensation capacitances continuously. To find the proper compensation capacitances to achieve the excellent performance of the system, the optimization algorithm is applied, and the corresponding digital control strategy is described to regulate the equivalent capacitances of SCCs. Experimental results with a 2.7 kW power scale show that the output voltage is constant, and the operating efficiency is always over 90% in the WPT system with an active resonant network under different misalignment conditions. In addition, the system is delivering an equal amount of energy for all misalignments within the range of 80 mm, which improves the expected value of transferred energy by about 29%.https://www.mdpi.com/2079-9292/12/9/1984LCC-S compensationmisalignment toleranceresonant capacitance selectionswitch-controlled capacitor (SCC) |
| spellingShingle | Weijie Li Lijun Diao Weiyao Mei Zhonghao Dongye Xuqing Qin Zheming Jin Optimized Resonant Network Design for High Energy Transfer Efficiency of the WPT System Electronics LCC-S compensation misalignment tolerance resonant capacitance selection switch-controlled capacitor (SCC) |
| title | Optimized Resonant Network Design for High Energy Transfer Efficiency of the WPT System |
| title_full | Optimized Resonant Network Design for High Energy Transfer Efficiency of the WPT System |
| title_fullStr | Optimized Resonant Network Design for High Energy Transfer Efficiency of the WPT System |
| title_full_unstemmed | Optimized Resonant Network Design for High Energy Transfer Efficiency of the WPT System |
| title_short | Optimized Resonant Network Design for High Energy Transfer Efficiency of the WPT System |
| title_sort | optimized resonant network design for high energy transfer efficiency of the wpt system |
| topic | LCC-S compensation misalignment tolerance resonant capacitance selection switch-controlled capacitor (SCC) |
| url | https://www.mdpi.com/2079-9292/12/9/1984 |
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