Fast Electromgnetic Dosimetry Method for Wireless Power Transfer System and Its application to Safety Compliance

• Project/Area Number: 25420251
• 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: Nagoya Institute of Technology
• Principal Investigator: Hirata Akimasa 名古屋工業大学, 工学(系)研究科(研究院), 准教授 (00335374)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: 電磁界の安全性 / 解析技術 / 国際標準化 / 国際研究者交流（イタリア、フィンランド） / 国際研究者交流 / 国際研究者交流（イタリア）

Outline of Final Research Achievements

The internal electric field in anatomical human body models was computed for magnetic field exposure from wireless power transfer system from 85 kHz to 10 MHz. From computational results, the decisive factor for internal electric field is found to be the magnetic flux passing through the human body. The relationship between internal and external electric fields has then been presented. This accomplishment provided the basis of guidelines by Ministry of Internal Affairs and Communications as well as the contribution to the international standards.

Research Products

• [Int'l Joint Research] University of L'Aquila(イタリア)
• [Int'l Joint Research] Aalto University(フィンランド)
• [Journal Article] Quasistatic Approximation for Exposure Assessment of Wireless Power Transfer (2015)
  • Author(s): I. Laakso, T. Shimamoto, A. Hirata, and M. Feliziani
  • Journal Title: IEICE Transactions on Communications Volume: E98.B Issue: 7 Pages: 1156-1163
  • DOI: 10.1587/transcom.E98.B.1156
  • NAID: 130005085027
  • ISSN: 0916-8516, 1745-1345
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Internal electric field in pregnant-woman model for wireless power transfer systems in electric vehicles (2015)
  • Author(s): T. Shimamoto, I. Laakso, A. Hirata
  • Journal Title: Electronics letters Volume: 51 Issue: 25 Pages: 2136-2137
  • DOI: 10.1049/el.2015.2457
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 電気自動車に関わる電磁界に対する生体安全性の適合性評価技術 (2015)
  • Author(s): 平田晃正
  • Journal Title: 電子情報通信学会誌 Volume: 98 Pages: 892-894
  • Peer Reviewed
• [Journal Article] In-situ electric field in human body model in different postures for wireless power transfer system in an electrical vehicle (2015)
  • Author(s): Tetsu Sunohara, Ilkka Laakso, Akimasa Hirata
  • Journal Title: Physics in Medicine and Biology Volume: 60 Issue: 1 Pages: 163-173
  • DOI: 10.1088/0031-9155/60/1/163
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Analysis of in-situ electric field and specific absorption rate in human models for wireless power transfer system with induction coupling (2014)
  • Author(s): Tetsu Sunohara, Akimasa Hirata, Ilkka Laakso, Teruo Onishi
  • Journal Title: Physics in Medicine and Biology Volume: 59 Issue: 14 Pages: 3721-3735
  • DOI: 10.1088/0031-9155/59/14/3721
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 磁気共鳴型無線電力伝送に対する高速人体数値ドシメトリ解析 (2013)
  • Author(s): 土田昌吾，ラークソイルッカ，平田晃正
  • Journal Title: 電子情報通信学会和文論文誌(C) Volume: J96-C Pages: 122-130
  • NAID: 110009611479
  • Peer Reviewed
• [Journal Article] Evaluation of induced electric field and compliance procedure for wireless power transfer system in an electrical vehicle (2013)
  • Author(s): Ｉｌｋｋａ Ｌａａｋｓｏ， Ａｋｉｍａｓａ Ｈｉｒａｔａ
  • Journal Title: Physics in Medicine and Biology Volume: 58 Issue: 21 Pages: 7583-7593
  • DOI: 10.1088/0031-9155/58/21/7583
  • Peer Reviewed
• [Presentation] 6.78MHz帯無線電力システムに伴う成人および子供のSAR評価 (2016)
  • Author(s): 島本拓也，岩橋真宏，ラークソ イルッカ，平田晃正，大西輝夫
  • Organizer: 電子情報通信学会エレクトロニクス研究会
  • Place of Presentation: 神戸市産業振興センター
  • Year and Date: 2016-01-28
  • Invited
• [Presentation] 電気自動車への無線電力伝送システムによる女性および妊娠女性モデルにおける体内誘導電界解析 (2015)
  • Author(s): 島本拓也，Ilkka Laakso，平田晃正
  • Organizer: 電子情報通信学会ソサイエテイ大会
  • Place of Presentation: 東北大学
  • Year and Date: 2015-09-08
• [Presentation] Age dependence of thermoregulation, heating of the eye, relationship between SAR and temperature, thermal model for pregnant woman (ambient heat versus HF) (2015)
  • Author(s): Akimasa Hirata
  • Organizer: ICNIRP Workshop on Thresholds of thermal damage
  • Place of Presentation: Istanbul, Turkey
  • Year and Date: 2015-05-26
  • Int'l Joint Research / Invited
• [Presentation] 電気自動車無線電力給電におけるコイル形状による体内誘導電界の差異 (2015)
  • Author(s): 島本 拓也，ラークソイルッカ，平田晃正
  • Organizer: 電子情報通信学会環境電磁工学研究会
  • Place of Presentation: 沖縄県市町村自治会館
  • Year and Date: 2015-01-22 – 2015-01-23
• [Presentation] Applicability of quasistatic approximation for exposure assessment of wireless power transfer (2014)
  • Author(s): I. Laakso, T. Shimamoto, A. Hirata, M. Feliziani
  • Organizer: International Symposium on Electromagnetic Compatibility
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 2014-05-12 – 2014-05-16
  • Invited
• [Presentation] 無線電力伝送システムに対する体内誘導量の数値評価 (2014)
  • Author(s): 平田晃正
  • Organizer: 電子情報通信学会総合大会
  • Place of Presentation: 新潟大学
  • Invited
• [Presentation] 無線電力伝送システムに対するSAR解析における準性近似の有効性に関する検討 (2013)
  • Author(s): 平田晃正，伊藤史宏，ラークソイルッカ
  • Organizer: 電子情報通信学会マイクロ波研究会
  • Place of Presentation: 名古屋工業大学
• [Presentation] 電気自動車を充電するための無線電力伝送に伴う磁界に対する人体ばく露評価 (2013)
  • Author(s): ラークソイルッカ, 平田晃正
  • Organizer: 電気学会電磁界理論研究会
  • Place of Presentation: 三沢
• [Book] EMC (2016)
  • Author(s): 平田晃正，和氣加奈子
  • Total Pages: 9
  • Publisher: 科学情報出版