| 基于最优负载匹配WPT系统的最大效率跟踪 |
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| 引用本文： | 逄海萍,邱毅,陈浩然. 基于最优负载匹配WPT系统的最大效率跟踪[J]. 电源学报, 2021, 19(2): 153-159 |
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| 作者姓名： | 逄海萍 邱毅 陈浩然 |
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| 作者单位： | 青岛科技大学自动化与电子工程学院,青岛科技大学自动化与电子工程学院,青岛科技大学自动化与电子工程学院 |
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| 基金项目： | 山东省自然科学基金（ZR2018LF008）；山东省本科高校教学改革研究项目（Z2016M007）；国家级大学生创新创业训练计划项（201610426041） |
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| 摘 要： | 磁耦合谐振式无线电能传输MCR-WPT(magnetically-coupled resonant wireless power transfer)因其具有在中长距离传输较大电能的优势,获得较高的潜在应用价值.针对一类具有串-串结构等效电路的MCR-WPT系统,首先分析其传输效率,得出发射和接收回路同时处于相同频率的谐...
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| 关 键 词： | 磁耦合谐振 无线电能传输 最优负载 效率跟踪 锁相环调谐 |
| 收稿时间： | 2019-02-26 |
| 修稿时间： | 2021-02-05 |
Maximum Efficiency Tracking of WPT System Based on Optimal Load Matching |
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| PANG Haiping,QIU Yi and CHEN Haoran. Maximum Efficiency Tracking of WPT System Based on Optimal Load Matching[J]. Journal of Power Supply, 2021, 19(2): 153-159 |
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| Authors: | PANG Haiping QIU Yi CHEN Haoran |
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| Affiliation: | College of Automation and Electronic Engineering, Qingdao University of Science and Technology, Qingdao 266061, China,College of Automation and Electronic Engineering, Qingdao University of Science and Technology, Qingdao 266061, China and College of Automation and Electronic Engineering, Qingdao University of Science and Technology, Qingdao 266061, China |
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| Abstract: | Magnetically-coupled resonant (MCR) wireless power transmission (WPT) has high potential application value because it has the advantage of transmitting relatively large power over medium and long distances. In this paper, the transmission efficiency is analyzed firstly for a class of MCR-WPT systems with series-series equivalent circuits, and it is concluded that the state, the transmitting and receiving circuits are both in resonance in same frequency at the same time, is only a necessary condition to achieve maximum efficiency. Furthermore, it is analyzed and proved that, under the resonate state above, there exists an optimal load which can make the transmission efficiency reach the maximum possible, when the coil mutual inductance (coil distance) is given. After that, a DC-DC impedance conversion circuit is introduced to make the system obtain equivalent optimal load under any actual load. A maximum efficiency tracking scheme based on optimal impedance matching with resonance frequency tracking by phase-locked loop is proposed and designed. Finally, the effectiveness and feasibility of the proposed scheme are verified by simulation and experiment. |
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| Keywords: | magnetically-coupled resonant wireless power transmission optimal load efficiency tracking phase-locked loop tuning |
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