DEVELOPMENT OF THE MAGNETIC DEVICES REALIZING HIGH PERFORMANCE AND LOW COST SWITCHING POWER SUPPLIES

• Project/Area Number: 24560324
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: Chiba University
• Principal Investigator: SAOTOME Hideo 千葉大学, 工学(系)研究科(研究院), 准教授 (50261938)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 鉄損 / フェライト / 動的磁気損失

Outline of Final Research Achievements

The dynamic magnetic and equivalent dielectric losses were measured under a wide range of exciting frequencies and voltages. The simulation model can reproduce the experimental data was developed. A rectangular wave voltage power supply that can output large voltage and dv/dt was manufactured for the measurements. Whether the hysteresis and dynamic magnetic losses depend on temperature was verified and it is experimentally found that the former only depends on temperature. DC-DC converter circuit simulations with the magnetic device model developed in this study were succeeded. The simulated results were compared with the experimental data and in accordance with them. It was shown that the loss of magnetic devices was precisely measured with low loss capacitors.

Research Products

• [Journal Article] Independence of the Dynamic Magnetic Loss from Temperature (2015)
  • Author(s): H. Saotome and H. Ohta
  • Journal Title: J. Magn. Soc. Jpn. Volume: 39 Pages: 62-64
  • Peer Reviewed / Open Access
• [Presentation] 双方向ZVS DC-DCコンバータの負荷－周波数特性 (2014)
  • Author(s): 菅原幸平，白澤昌寛，早乙女英夫
  • Organizer: 電気学会 マグネティックス研究会資料
  • Place of Presentation: 神奈川県箱根町
  • Year and Date: 2014-10-23 – 2014-10-24
• [Presentation] ワイヤレス電力伝送用トランスへの励磁電流供給方法の一例 (2014)
  • Author(s): 原田拓明，早乙女英夫
  • Organizer: 電気学会 マグネティックス研究会資料
  • Place of Presentation: 神奈川県箱根町
  • Year and Date: 2014-10-23 – 2014-10-24
• [Presentation] フェライトの動的磁気損失の温度依存性の有無の検討 (2014)
  • Author(s): 太田浩樹，早乙女英夫
  • Organizer: 電気学会 マグネティックス研究会資料
  • Place of Presentation: 神奈川県箱根町
  • Year and Date: 2014-10-23 – 2014-10-24
• [Presentation] LLCコンバータの効率向上に関する考察
  • Author(s): 白澤昌寛，早乙女英夫
  • Organizer: 電気学会
  • Place of Presentation: 金沢大学
• [Presentation] 動的磁気損失パラメータλfのBおよびdB/dt依存性
  • Author(s): 三浦智也，早乙女英夫
  • Organizer: 電気学会
  • Place of Presentation: 京都市
• [Book] 技術報告第1274号「電力用磁気デバイスの最新動向」 (2013)
  • Author(s): 早乙女英夫，他
  • Total Pages: 56
  • Publisher: 電気学会
• [Patent(Industrial Property Rights)] 変圧器及びそれを用いた電力変換装置 (2013)
  • Inventor(s): 早乙女英夫
  • Industrial Property Rights Holder: 早乙女英夫
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2013-093603
  • Filing Date: 2013-04-26