Multi-Layer Permanent Magnets for On-Chip Miniaturized Power Inductors with High Saturation Current

用于高饱和电流片上小型功率电感器的多层永磁体

基本信息

批准号：
1708690
负责人：
Jaber Abu Qahouq
金额：
$ 33万
依托单位：
University of Alabama Tuscaloosa
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2017
资助国家：
美国
起止时间：
2017-08-15 至 2023-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1708690&HistoricalAwards=false
关键词：
Multi Layer Permanent Magnets Chip

项目摘要

The main goal of the project is to investigate and develop multi-layer permanent magnets and/for on-chip miniaturized power inductors with twice the saturation current for switching power converters which are indispensable parts in electrical platforms and systems. The developed multi-layer permanent magnets and permanent magnet-based power inductors will result in efficient switching power converters and inverters with smaller footprint and overall volume and weight while maintaining all other desired characteristics. The nature of this project will make contributions to power and energy management in many applications that these power inductors and power converters are critical for and indispensable part of including renewable energy systems, computing platforms, communication and mobile systems, medical systems, electric vehicles, electronics, military systems, energy harvesting systems, aerospace systems, and most other peripherals and devices. This project identifies and addresses the issue of undesired non-uniform and uncontrolled flux distribution when the permanent magnet layer is vertically magnetized and as the permanent magnet thickness-to-surface area becomes smaller which prevents a practical permanent magnet-based power inductor from achieving an increase in or doubling the saturation current. The results of the project will be disseminated using different methods that include refereed journal and conference publications, classroom educational components, seminar lectures and public demonstrations. These and other events will also be used to attract students specifically from minority groups and rural districts to engineering and science.The team of the project plans to achieve the main goal of the project by (1) fabricating permanent magnet-based integrated magnetic power device structures which result in practically doubling the saturation current which otherwise will not be possible, (2) developing multi-layer permanent magnet concepts which allow for the control of the permanent magnet magnetic field by controlling the dimensions and thickness of each layer which is very important to achieving the doubling of the saturation current by flux distribution and cancellation, (3) developing fabrication schemes to realize the multi-layer permanent magnets and multi-layer permanent magnet power inductors, (4) growth of magnetic materials in order to meet the desired properties in the multi-layer permanent magnet power inductor devices, (5) testing and evaluating these power inductors while operating as a part of real experimental switching power converters, and (6) performing theoretical analysis, circuit models, and physical modeling for the multi-layer permanent magnets and multi-layer permanent magnet power inductors for design optimization and performance prediction before fabrication.

该项目的主要目的是调查和开发多层永久磁铁和/芯片小型化功率电感器，其饱和电流是开关功率转换器的两倍，这些电流是电气平台和系统中必不可少的零件。开发的多层永久磁铁和基于永久磁铁的功率电感器将导致有效的开关转换器和具有较小占地面积，整体体积和重量的逆变器，同时保持所有其他所需的特性。该项目的性质将在许多应用中为电力和能源管理做出贡献，这些功率电感器和电源转换器对于包括可再生能源系统，计算平台，通信和移动系统，医疗系统，电动汽车，电子系统，军事系统，能源收集系统，航空航天系统，航空航天系统以及大多数外围设备以及大多数外围设备以及其他可再生能源至关重要的一部分。该项目确定并解决了当永久磁铁层垂直磁化时不希望的非均匀和不受控制的通量分布的问题，并且随着永久磁铁厚度 - 地面面积变小，可防止实用的永久磁铁基于磁铁的电力电感器，从而增加或加倍增加饱和电流。该项目的结果将使用不同的方法进行传播，包括裁判期刊和会议出版物，课堂教育组成部分，研讨会讲座和公开演示。这些和其他事件还将用于吸引从少数群体和农村地区到工程和科学的专门吸引学生。该项目的团队计划通过（1）制造实现项目的主要目标来实现该项目的主要目标每一层对于通过通量分布和取消来实现饱和电流的一倍非常重要，（3）开发制造方案，以实现多层永久磁铁和多层永久磁铁功率感应器，（4）磁性材料的增长，以便在多层固定磁力启动器中（5）在多层的启动器中（5），（5）实际实验开关功率转换器以及（6）对多层永久磁体和多层永久磁铁功率电感器进行理论分析，电路模型和物理建模，以进行设计优化和性能预测。

项目成果

期刊论文数量（6）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

3-D Physical Model for On-chip Power Inductor Design with Evaluation of Airgap Variation Effect

用于评估气隙变化效应的片上功率电感器设计的 3D 物理模型

DOI：
10.1109/apec42165.2021.9487062
发表时间：
2021
期刊：
Proceedings of the 2021 IEEE Applied Power Electronics Conference and Exposition (APEC
影响因子：
0
作者：
Xia, Zhiyong;Abu Qahouq, Jaber A.;Kotru, Sushma
通讯作者：
Kotru, Sushma

Synthesis and magnetic studies of pure and doped NiZn ferrite films using Sol gel method