CAREER: Toward a wireless power transfer system: high-frequency power electronics

职业：走向无线电力传输系统：高频电力电子器件

• 批准号: 2414898
• 负责人: Jungwon Choi
• 金额: $ 50万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-10-01 至 2026-02-28
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2414898&HistoricalAwards=false
• 关键词: CAREER; Toward; wireless; power; transfer

The modern electronic systems have been transforming rapidly to realize automation, such as automation in factories or warehouses and autonomous vehicles. As demand for automation grows, enabling technologies such as artificial intelligence, control, and smart charging systems become beneficial. However, while other technologies have been considerably revolutionized, the effort to develop a smart and efficient charging system for automation has not. Power electronics is a critical technology in the charging system to convert electric energy into a different level or type to deliver it to an electric load, such as batteries. Therefore, it must tackle the key challenges that prevent us from obtaining a smart, compact, and efficient charging system. As an effort to overcome the challenges, wireless power transfer technology has been explored to reduce the charging error and remove manual intervention to charge their batteries. It can eliminate heavy wire cables, connectors, and power plug failure resulting from dust, dirt, and other environmental factors. Moreover, the autonomous driving technology makes this technology beneficial because they can go to the charging station when their batteries run out. However, current power converters for wireless power transfer are limited in maximizing performance because of the available technologies and designs. This proposed research aims to develop a high-frequency power converter to miniaturize a wireless power transfer system efficiently and investigate pioneering charging methodologies for battery-powered vehicles. This research will accelerate advances in various applications such as transportation electrification and renewable energy technologies by improving the battery charging methodology. Broader transformative impacts are also anticipated from the proposed research into undergraduate and graduate curricula and the involvement of undergraduate and underrepresented students in research. Also, outreach to K-12 students and local industries will be pursued to introduce wireless power transfer and power-electronic circuits and ensure the broad transformative impact of the research activities.This project aims to investigate new design techniques to improve power density and performance of power electronics while studying innovative approaches that enhance the charging ability in the WPT system. The research will be performed through the intertwined thrusts that involve: i) designing and implementing a high-frequency resonant converter with magnetic resonant coupling coils to increase power density efficiently, ii) investigating a bidirectional wireless power transfer system using self-synchronous rectification and control system to provide Vehicle-to-Grid capability, and iii) exploring advanced wireless power transfer charging approaches such as vehicle-to-vehicle and dynamic charging to reduce the charging time by diversifying the charging methods. The dependence of the circuit performance on the switching devices, magnetic designs, gate drive circuitry, and compensation network topology will be explored in detail. The PI will simulate the proposed system in the multiphysics software to evaluate human exposure to electromagnetic fields due to high-power operation at high frequencies. Also, multiple coil structure will be studied to reduce the leakage fields and minimize the expensive and lossy shields. Successful project completion is anticipated to expand the operating range and power level of power-electronic circuits for wireless power transfer systems using novel charging approaches.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

现代电子系统正在迅速转变，以实现自动化，例如工厂或仓库的自动化和自动驾驶汽车。 随着自动化需求的增长，人工智能、控制和智能充电系统等使能技术变得有益。然而，虽然其他技术已经发生了相当大的变革，但开发智能高效的自动化充电系统的努力却没有。电力电子是充电系统中的关键技术，用于将电能转换为不同的水平或类型，以将其输送到电负载，例如电池。因此，它必须解决阻碍我们获得智能、紧凑和高效充电系统的关键挑战。为了克服这些挑战，人们已经探索了无线电力传输技术，以减少充电错误并消除手动干预来为电池充电。它可以消除由于灰尘、污垢和其他环境因素导致的重型电线电缆、连接器和电源插头故障。此外，自动驾驶技术使这项技术受益，因为他们可以在电池耗尽时前往充电站。然而，由于可用的技术和设计，用于无线功率传输的当前功率转换器在最大化性能方面受到限制。这项研究旨在开发一种高频功率转换器，以有效地实现无线功率传输系统，并研究电池供电车辆的开创性充电方法。这项研究将通过改进电池充电方法来加速各种应用的进步，如交通电气化和可再生能源技术。预计拟议的对本科生和研究生课程的研究以及本科生和代表性不足的学生参与研究也会产生更广泛的变革性影响。此外，还将面向K-12学生和当地产业，介绍无线电力传输和电力电子电路，确保研究活动产生广泛的变革性影响。本项目旨在研究新的设计技术，以提高电力电子的功率密度和性能，同时研究提高WPT系统充电能力的创新方法。该研究将通过相互交织的推力进行，涉及：i）设计和实现具有磁谐振耦合线圈的高频谐振转换器以有效地增加功率密度，ii）研究使用自同步整流和控制系统的双向无线功率传输系统以提供车辆到电网的能力，及iii）探索先进的无线电力传输充电方法，例如车对车及动态充电，以透过多样化的充电方法缩短充电时间。将详细探讨电路性能对开关器件、磁性设计、栅极驱动电路和补偿网络拓扑结构的依赖性。PI将在multiphysics软件中模拟拟定系统，以评估人体暴露于高频高功率操作引起的电磁场。此外，多线圈结构将被研究，以减少泄漏场和最大限度地减少昂贵的和有损耗的屏蔽。该项目的成功完成预计将扩大使用新型充电方法的无线电力传输系统的功率电子电路的工作范围和功率水平。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Duty and Phase Control of a Class E Rectifier with Nonlinear Capacitance of FETs

具有 FET 非线性电容的 E 类整流器的占空比和相位控制

• DOI: 10.1109/ecce53617.2023.10362104
• 发表时间: 2023
• 期刊: IEEE
• 作者: Kim, Minki;Choi, Jungwon
• 通讯作者: Choi, Jungwon

Design of a Spiral Coil for High-Frequency Wireless Power Transfer Systems Using Machine Learning

使用机器学习设计高频无线电力传输系统螺旋线圈

• DOI: 10.1109/jestie.2023.3317797
• 发表时间: 2024
• 期刊: IEEE Journal of Emerging and Selected Topics in Industrial Electronics
• 作者: Kim, Minki;Jeong, Minoh;Cardone, Martina;Choi, Jungwon
• 通讯作者: Choi, Jungwon

Optimization of Spiral Coil Design for WPT Systems using Machine Learning

使用机器学习优化 WPT 系统的螺旋线圈设计

• DOI: 10.1109/apec43580.2023.10131149
• 发表时间: 2023
• 期刊: IEEE
• 作者: Kim, Minki;Jeong, Minoh;Cardone, Martina;Choi, Jungwon
• 通讯作者: Choi, Jungwon