Development of Wireless Power Transfer System Capable of Charging during Operation for Automatic Guided Vehicle.

• Project/Area Number: 15K18022
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: Kyushu Institute of Technology
• Principal Investigator: Akihiro Imakiire 九州工業大学, 大学院工学研究院, 助教 (30710264)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 非接触給電 / 走行中給電 / 無人搬送車 / 中継コイル / 電流可逆チョッパ / SiC / 高効率化 / 電気機器工学 / インバータ / 自動搬送車 / AGV

Outline of Final Research Achievements

Proposed system combined wireless power transfer circuit and motor driving circuit has features as follows. (1) When a repeating coil position is always controlled to center position between primary coil and secondary coil, the voltage burden of resonance capacitor of the repeating coil is maximized. (2) It is possible to maintain high system efficiency even if the output power decreases due to misalignment of coil. (3) A method of decision of output voltage of the wireless power transfer system is represented by a graph using battery voltage and charging current of the automatic guided vehicle as parameters. (4) Designing the total value of the parasitic inductance of inverter to 12 nH less leads to switching waveforms without ringing and large surge voltage. It means high-speed switching realized by reducing the parasitic inductance can reduce the switching loss.

Research Products

• [Journal Article] Electrical Characteristics of Wireless Power Transfer System with Repeating Coil for AGV Considering the Misalignment of Coils (2019)
  • Author(s): Akihiro Imakiire, Hideaki Tokunaga, Akihiro Kawagoe, Masayuki Hikita
  • Journal Title: Journal of the Institute of Industrial Applications Engineers Volume: 投稿中(発行年は仮で記載）
  • NAID: 40021795919
  • Peer Reviewed / Open Access
• [Presentation] 種々の中継コイル方式を用いた走行中非接触給電システムの比較 (2018)
  • Author(s): 川越彬央, 徳永英明, 今給黎明大, 小迫雅裕, 匹田政幸
  • Organizer: 平成30年電気学会全国大会
• [Presentation] Simulation of Electrical Characteristics for Misalignment of Coil in Wireless Power Transfer System Using Repeating Coil (2018)
  • Author(s): Akihiro Imakiire, Hideaki Tokunaga, Akihiro Kawagoe, Masahiro Kozako, Masayuki Hikita
  • Organizer: The 6th IIAE International Conference on Industrial Application Engineering 2018
  • Int'l Joint Research
• [Presentation] 中継コイルを用いた非接触給電における共振方法の解析 (2017)
  • Author(s): 徳永英明, 今給黎明大, 小迫雅裕, 匹田政幸
  • Organizer: 平成29年電気学会産業応用部門大会
• [Presentation] 無人搬送車（AGV）用走行中ワイヤレス給電に関する研究 (2017)
  • Author(s): 今給黎明大
  • Organizer: キャパシタフォーラム九州（2017年10月20-21日）
  • Invited
• [Presentation] Experimental Verification of Operation and Method of Decision of Maximum DC link voltage in Wireless Power Transfer System (2016)
  • Author(s): 徳永英明
  • Organizer: IEEE TENCON 2016 ― Technologies for Smart Nation
  • Place of Presentation: シンガポール（Marina Bay Sands 10 Bayfront Avenue, Singapore）
  • Year and Date: 2016-11-22
  • Int'l Joint Research
• [Presentation] センタータップを用いた中継コイル付非接触給電の等価回路方程式によるコイル効率計算値と実験値の比較 (2016)
  • Author(s): 田邊隼翔
  • Organizer: 平成28年電気学会産業応用部門大会
  • Place of Presentation: 群馬大学荒牧キャンパス（群馬県前橋市荒牧町４丁目２）
  • Year and Date: 2016-08-30
• [Presentation] 無人搬送車用非接触給電システムにおける直流リンク電圧がバッテリ電流制御時に与える影響 (2016)
  • Author(s): 徳永英明
  • Organizer: 平成28年電気学会産業応用部門大会
  • Place of Presentation: 群馬大学荒牧キャンパス（群馬県前橋市荒牧町４丁目２）
  • Year and Date: 2016-08-30
• [Presentation] SiCパワーデバイス適用による非接触給電システムの効率改善 (2016)
  • Author(s): 田邊隼翔
  • Organizer: H28年電気学会全国大会
  • Place of Presentation: 仙台
  • Year and Date: 2016-03-16
• [Presentation] 非接触給電システムによる750W級誘導電動機の駆動 (2016)
  • Author(s): 徳永英明
  • Organizer: H28年電気学会全国大会
  • Place of Presentation: 仙台
  • Year and Date: 2016-03-16
• [Presentation] Proposal of PM motor driving system consist of PWM inverter with voltage booster for applying to automated guided vehicle (2015)
  • Author(s): Akihiro Imakiire
  • Organizer: ICEMS 2015, 18th International Conference on Electrical Machines and Systems
  • Place of Presentation: Pattaya, Thailand
  • Year and Date: 2015-10-25
  • Int'l Joint Research
• [Presentation] SiCパワーモジュール適用による無人搬送車駆動用インバータの効率改善 (2015)
  • Author(s): 田邊隼翔
  • Organizer: H27年電気学会産業応用部門大会
  • Place of Presentation: 大分
  • Year and Date: 2015-09-02
• [Presentation] Characterization of Contactless Power Transfer System and Investigation of Core Shape for AGV Application (2015)
  • Author(s): Takahiro Kojima
  • Organizer: PEDS 2015, 11th IEEE International Conference on Power Electronics and Drive Systems
  • Place of Presentation: Sydney, Australia
  • Year and Date: 2015-06-09
  • Int'l Joint Research
• [Presentation] Comparison Performance of Si-IGBT and SiC-MOSFET Used for High Efficiency Inverter of Contactless Power Transfer System (2015)
  • Author(s): Hayato Tanabe
  • Organizer: PEDS 2015, 11th IEEE International Conference on Power Electronics and Drive Systems
  • Place of Presentation: Sydney, Australia
  • Year and Date: 2015-06-09
  • Int'l Joint Research