Development of Fast Analysis and Design of Magnetic Components for Switching Converter Driving at Several 10MHz to 100MHz

2023 Fiscal Year Final Research Report

• Project/Area Number: 22K20435
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0302:Electrical and electronic engineering and related fields
• Research Institution: Aoyama Gakuin University
• Principal Investigator: Sato Yuki 青山学院大学, 理工学部, 助教 (00966004)
• Project Period (FY): 2022-08-31 – 2024-03-31
• Keywords: マグネティックス / パワーエレクトロニクス

Outline of Final Research Achievements

In this study, modeling techniques for magnetic components were investigated for the purpose of developing a 100 MHz switching power supply. Magnetic components consist of windings and magnetic materials. In this study, significant results were achieved in both the precise estimation of high-frequency loss in windings and the measurement of high-frequency loss in magnetic materials, both of which were published as papers. For the estimation of high-frequency loss in windings, a fast and accurate analysis was achieved by combining the homogenization method and circuit analysis. On the other hand, for high-frequency magnetic losses, we proposed a measurement method based on resonance and compensation techniques, which enabled us to measure high-frequency losses close to 60 MHz.

Free Research Field

電気工学

Academic Significance and Societal Importance of the Research Achievements

本研究では、100MHzのスイッチング電源開発を目的に研究を行ったが、現状大きく分けて２つの問題があった。一つは、巻線の表皮効果や近接効果、寄生キャパシタンスを同時に考慮しながら高速かつ高精度に解析可能な手法が存在しないことであり、２つ目は10MHz以上の磁気材料の損失の高精度な測定手法が確立されていないことである。本研究では、その２つに取り組み、どちらも成果を上げた。現在においても、今後においてもスイッチング電源の高周波化は必要不可欠であり、本研究で開発した手法は必要となると考えている。