Wireless power transfer study using class E inverters and synchronous rectifiers

使用 E 类逆变器和同步整流器的无线电力传输研究

• 批准号: 517559-2017
• 负责人: Johnson, Thomas
• 金额: $ 0.91万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Engage Plus Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640412
• 关键词: Wireless; power; transfer; study; using

Wireless power transfer systems are an emerging technology with the aim of completely eliminating cables forpowering electrical devices. Wireless power systems are typically limited to short distances up to 50 cm, andapplications of the technology are broad ranging from the elimination of wiring harnesses in automobile andaerospace applications to powering implanted biomedical devices. One of the main challenges in wirelesspower systems is compensating for impedance changes created by spatial variation. The compensation ofspatial impedance change is essential to obtain efficient and robust power transfer.In this research project, wireless links with class E inverters and class E synchronous rectifiers will beinvestigated. Designs for three different frequency bands (13.56 MHz, 27.12 MHz and 40.68 MHz) will beimplemented. A comparison of the power transfer over a capacitively coupled wireless link will be evaluatedfor a range of spatial variation from 10 to 40 cm. Conclusions will be made regarding the robustness of theclass E circuit topology when subjected to spatial impedance changes as well as the impact of link frequency onspatial impedance sensitivity.

无线电力传输系统是一种新兴技术，其目的是完全消除为电气设备供电的电缆。无线供电系统通常仅限于50厘米以内的短距离，该技术的应用范围很广，从消除汽车和航空航天应用中的线束到为植入式生物医学设备供电。无线电力系统的主要挑战之一是补偿由空间变化引起的阻抗变化。空间阻抗变化的补偿对于获得高效和鲁棒的功率传输至关重要。在本研究项目中，将研究具有E类逆变器和E类同步整流器的无线链路。将实现三个不同频段（13.56MHz、27.12MHz和40.68MHz）的设计。在10到40 cm的空间变化范围内，将对电容耦合无线链路上的功率传输进行比较。结论将作出关于theclass E电路拓扑结构的鲁棒性时，受到空间阻抗的变化，以及链路频率对空间阻抗灵敏度的影响。