Variable Coupling Coefficient Integrated Inductor for Hybrid Energy Source Systems

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2023-05-01 DOI:10.1541/ieejjia.22008161

Masanori Ishigaki, Koji Shigeuchi, Naoki Yanagizawa, Hiroki Nitta, Shuji Tomura

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Abstract

This paper proposes an innovative integrated inductor technology for hybrid energy source systems (HESS). The proposed inductor utilizes novel variable coupling coefficient integrated inductor (VCCII) technology to integrate two inductors that are required for a dual boost converter for HESS. VCCII has an integrated structure of two inductors, and enables control the coupling coefficient between the two inductors depending on the power distribution ratio of two power sources. In a low-power operation, the coupling coefficient between the two inductors is structurally zero, which enables the VCCII technology to independently control each output of energy sources without interference. In high-power operation, the coupling coefficient of the two windings increases by utilizing the non-linear characteristics of a magnetic core. These coupling effects peak shaving of the inductor current, which contributes to loss reduction and increase the maximum power capability. A prototype result verifies a 50% increase of peak power density and a 15% increase of maximum power capability under 20 V / 100 A and 25 V / 40 A inputs and 42 V output HESS. Additionally, the result gives 1.9 point of efficiency improvement in a double boost converter circuit operating at 100-kHz switching, 810 W output.

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混合能源系统的变耦合系数集成电感

提出了一种用于混合能源系统(HESS)的集成电感技术。该电感采用可变耦合系数集成电感(VCCII)技术，将HESS双升压变换器所需的两个电感集成在一起。VCCII采用两个电感的集成结构，可以根据两个电源的功率分配比来控制两个电感之间的耦合系数。在低功耗工作时，两个电感之间的耦合系数在结构上为零，这使得VCCII技术能够独立控制每个能量源的输出而不受干扰。在大功率运行中，利用磁芯的非线性特性，增大了两个绕组的耦合系数。这些耦合效应对电感电流的削峰，有助于降低损耗和提高最大功率能力。样机结果验证了在输入为20 V / 100 A和25 V / 40 A，输出为42 V的HESS下，峰值功率密度提高50%，最大功率能力提高15%。此外，在工作在100 khz开关，810 W输出的双升压转换器电路中，结果给出了1.9个点的效率改进。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.