Development of integrated wire-less with wired high power rapid charger

• Project/Area Number: 18H03775
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Medium-sized Section 21:Electrical and electronic engineering and related fields
• Research Institution: Nagaoka University of Technology
• Principal Investigator: ITOH JUNICHI 長岡技術科学大学, 工学研究科, 教授 (90377218)
• Project Period (FY): 2018-04-01 – 2022-03-31
• Project Status: Completed (Fiscal Year 2021)
• Budget Amount: ¥43,680,000 (Direct Cost: ¥33,600,000、Indirect Cost: ¥10,080,000); Fiscal Year 2021: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000); Fiscal Year 2020: ¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000); Fiscal Year 2019: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000); Fiscal Year 2018: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
• Keywords: 電気自動車 / 急速充電器 / WPT / 急速充電 / ワイヤレス充電 / MMCC / セル方式 / ワイヤセス給電 / マルチセル方式 / DABコンバータ / 漏えい磁界 / ワイヤレス給電

Outline of Final Research Achievements

Electric vehicle (EV) chargers are classified into wired and wireless charging. The system volume and converter losses are increased because the output power of the EV charger becomes higher and higher. Moreover, a leakage magnetic field is increased in wireless chargers. This research has developed highly efficient and downsizing method for high output power EV chargers including the reduction method of the leakage magnetic fields for the wireless charging. The developed methods contribute to the widespread use of EV chargers with highly utility and safety.

Academic Significance and Societal Importance of the Research Achievements

電気自動車(EV)向け充電器は有線充電とワイヤレス充電に分類できる。EV充電器は年々大容量化が要求されており，システム体積の増加と損失増加に加え，ワイヤレス式充電器においては漏えい磁界の増加が問題となる。本研究では，有線充電とワイヤレス充電の大容量化に向けて小型かつ高効率なEV充電器を実現する手法を開発した。特にワイヤレス式充電は漏えい磁界低減手法も開発し，ワイヤレス充電を含めEV充電器の省スペース化とエネルギーロス低減が実現し，利便性および安全性が向上した。

Research Products

• [Journal Article] EMF Reduction with Compensated Current RMS Based on Short Canceling Coils for Wireless Power Transfer Systems (2021)
  • Author(s): 古川啓太, 日下佳祐, 伊東淳一
  • Journal Title: IEEJ Transactions on Industry Applications Volume: 141 Issue: 5 Pages: 405-415
  • DOI: 10.1541/ieejias.141.405
  • NAID: 130008033183
  • ISSN: 0913-6339, 1348-8163
  • Year and Date: 2021-05-01
  • Peer Reviewed
• [Journal Article] Modeling of Coils for Wireless Power Transfer Systems with Reluctance Network Analysis (2020)
  • Author(s): 古川 啓太, 日下 佳祐, 伊東 淳一
  • Journal Title: IEEJ Transactions on Industry Applications Volume: 140 Issue: 10 Pages: 791-792
  • DOI: 10.1541/ieejias.140.791
  • NAID: 130007920868
  • ISSN: 0913-6339, 1348-8163
  • Year and Date: 2020-10-01
  • Peer Reviewed
• [Journal Article] Control Method for Isolated AC-DC Matrix Converter by Elimination of DC Ripple Component (2020)
  • Author(s): 宅間 春介, 日下 佳祐, 伊東 淳一
  • Journal Title: IEEJ Transactions on Industry Applications Volume: 140 Issue: 8 Pages: 623-624
  • DOI: 10.1541/ieejias.140.623
  • NAID: 130007883864
  • ISSN: 0913-6339, 1348-8163
  • Year and Date: 2020-08-01
  • Peer Reviewed
• [Journal Article] Current Reduction Method for Dual Active Bridge Converter in Non-linear Dead-time Compensation Method (2020)
  • Author(s): 河内 謙吾, 比嘉 隼, 渡辺 大貴, 日下 佳祐, 伊東 淳一
  • Journal Title: IEEJ Transactions on Industry Applications Volume: 140 Issue: 3 Pages: 175-183
  • DOI: 10.1541/ieejias.140.175
  • NAID: 130007804459
  • ISSN: 0913-6339, 1348-8163
  • Year and Date: 2020-03-01
  • Peer Reviewed
• [Journal Article] Switching Loss Reduction Method for Isolated DC to Three-Phase-AC Converter with an Indirect Matrix Converter (2020)
  • Author(s): 宅間 春介, 大島 涼, 日下 佳祐, 伊東 淳一
  • Journal Title: IEEJ Transactions on Industry Applications Volume: 140 Issue: 3 Pages: 130-139
  • DOI: 10.1541/ieejias.140.130
  • NAID: 130007804444
  • ISSN: 0913-6339, 1348-8163
  • Year and Date: 2020-03-01
  • Peer Reviewed
• [Journal Article] Development of Solid-state Transformer for 6.6-kV Single-phase Grid with Automatically Balanced Capacitor Voltage (2019)
  • Author(s): Jun-ichi Itoh,Kazuki Aoyagi,Keisuke Kusaka,Masakazu Adachi
  • Journal Title: IEEJ Journal of Industry Applications Volume: 8 Issue: 5 Pages: 795-802
  • DOI: 10.1541/ieejjia.8.795
  • NAID: 130007700495
  • ISSN: 2187-1094, 2187-1108
  • Year and Date: 2019-09-01
  • Peer Reviewed / Open Access
• [Journal Article] Improvement of Equivalent Magnetic Coupling Coefficient of Wireless Power Transfer System with Multi-winding Transmission Coil (2019)
  • Author(s): 古川 啓太,日下 佳祐,伊東 淳一
  • Journal Title: IEEJ Transactions on Industry Applications Volume: 139 Issue: 7 Pages: 612-623
  • DOI: 10.1541/ieejias.139.612
  • NAID: 130007672127
  • ISSN: 0913-6339, 1348-8163
  • Year and Date: 2019-07-01
  • Peer Reviewed
• [Journal Article] Development of Three-Phase Wireless Power Transfer System with Reduced Radiation Noise (2019)
  • Author(s): Keisuke Kusaka,Keita Furukawa,Jun-ichi Itoh
  • Journal Title: IEEJ Journal of Industry Applications Volume: 8 Issue: 4 Pages: 600-607
  • DOI: 10.1541/ieejjia.8.600
  • NAID: 130007673088
  • ISSN: 2187-1094, 2187-1108
  • Year and Date: 2019-07-01
  • Peer Reviewed / Open Access
• [Journal Article] General Analytical Model of Inductance Variation by EMF-canceling Coil for Inductive Power Transfer System (2019)
  • Author(s): Keita Furukawa,Keisuke Kusaka,Jun-ichi Itoh
  • Journal Title: IEEJ Journal of Industry Applications Volume: 8 Issue: 4 Pages: 660-668
  • DOI: 10.1541/ieejjia.8.660
  • NAID: 130007673086
  • ISSN: 2187-1094, 2187-1108
  • Year and Date: 2019-07-01
  • Peer Reviewed / Open Access
• [Journal Article] Development of T-type Dual Active Bridge DC-DC Converter with Switching Operation Mode Over Wide-Voltage-Operation Range (2019)
  • Author(s): H. Higa, S. Takuma, K. Kusaka, J. Itoh
  • Journal Title: IEEJ Transactions on Industry Applications Volume: 139 Issue: 4 Pages: 388-400
  • DOI: 10.1541/ieejias.139.388
  • NAID: 130007622127
  • ISSN: 0913-6339, 1348-8163
  • Year and Date: 2019-04-01
  • Peer Reviewed
• [Journal Article] Suppression Method of DC-offset in Transformer Current for Flying Capacitor Dual Active Bridge Converter at Changing Operation Mode (2019)
  • Author(s): H. Higa, J. Itoh
  • Journal Title: IEEJ Transactions on Industry Applications Volume: 139 Issue: 3 Pages: 360-361
  • DOI: 10.1541/ieejias.139.360
  • NAID: 130007606816
  • ISSN: 0913-6339, 1348-8163
  • Year and Date: 2019-03-01
  • Peer Reviewed
• [Journal Article] Experimental Verification for Dual Active Bridge Converter by Switching Equivalent-Magnetizing-Current Method (2019)
  • Author(s): H. Higa, J. Itoh
  • Journal Title: IEEJ Transactions on Industry Applications Volume: 139 Issue: 1 Pages: 40-50
  • DOI: 10.1541/ieejias.139.40
  • NAID: 130007542292
  • ISSN: 0913-6339, 1348-8163
  • Year and Date: 2019-01-01
  • Peer Reviewed
• [Journal Article] Comparative Verification of Radiation Noise Reduction Effect Using Spread Spectrum for Inductive Power Transfer System (2019)
  • Author(s): Keisuke Kusaka, Kent Inoue, Jun-ichi Itoh
  • Journal Title: World Electric Vehicle Journal Volume: 10 Issue: 2 Pages: 1-12
  • DOI: 10.3390/wevj10020040
  • Peer Reviewed / Open Access
• [Journal Article] Dead-time Compensation Method for Dual Active Bridge Converter with Three-level Operation (2018)
  • Author(s): K. Kawauchi, H. Higa, K. Kusaka, J. Itoh
  • Journal Title: IEEJ Transactions on Industry Applications Volume: 138 Issue: 12 Pages: 944-945
  • DOI: 10.1541/ieejias.138.944
  • NAID: 130007539578
  • ISSN: 0913-6339, 1348-8163
  • Year and Date: 2018-12-01
  • Peer Reviewed
• [Presentation] 「階調制御による ISOP 型 Solid-State Transformerのコモンモードノイズ低減効果の検証」 (2022)
  • Author(s): 菊地尚斗, 日下佳祐, 伊東淳一
  • Organizer: 電気学会 全国大会
• [Presentation] セル方式マルチポートEV 充電器の無線通信を用いた電力バランス制御」 (2022)
  • Author(s): 大畠慶太, 渡辺大貴, 伊東淳一, 日下佳祐
  • Organizer: 電気学会 全国大会
• [Presentation] T. Yasuda, J. Itoh, G. Guidi: "Power Distribution Control between Cells with Imbalanced Load for Modular Multilevel multiport Converter" (2021)
  • Author(s): T. Yasuda, J. Itoh, G. Guidi
  • Organizer: IEEE 2021 - Energy Conversion Congress & Exposition - Asia (ECCE Asia 2021)
  • Int'l Joint Research
• [Presentation] "Flying-capacitor Linear Amplifier with N-channel MOSFETs for Radiation Noise Reduction of Wireless Power Transfer System" (2021)
  • Author(s): R.Kusui, K.Kusaka, J.Itoh
  • Organizer: 5th International Electric Vehicle Technology Conference
  • Int'l Joint Research
• [Presentation] 「ISOP 型 Solid-State Transformer の回路構成によるコモンモードノイズの比較」 (2021)
  • Author(s): 菊地尚斗, 日下佳佑, 伊東淳一
  • Organizer: 電気学会 半導体電力変換研究会
• [Presentation] モジュラーマルチレベルマルチポートコンバータにおけるセル間の直流電圧平衡法 (2020)
  • Author(s): 安田匠, 宅間春介, 伊東淳一
  • Organizer: 電気学会 半導体電力変換研究会
• [Presentation] Input Current Balancing Control Method under Imbalanced Load for Three-phase Multi-port Converter based on Modular Multilevel Converter (2020)
  • Author(s): T. Yasuda, T. Kumagai, M. Miyashita, K. Kusaka, J. Itoh
  • Organizer: IPEMC2020-ECCE Asia
  • Int'l Joint Research
• [Presentation] Hybrid Multiple Chopper Cells of PWM and Square-wave Operation for Solid-state Transformer (2020)
  • Author(s): N.Kikuchi, K.Kusaka, J.Itoh, H.N.Le
  • Organizer: EPE2020-ECCE Europe
  • Int'l Joint Research
• [Presentation] 異なる動作周波数を併用したマルチセルSolid-State Transformer の制御法 (2020)
  • Author(s): 菊地尚斗, 日下佳祐, 伊東淳一, レ・ホアイ・ナム
  • Organizer: 電気学会 半導体電力変換研究会
• [Presentation] Downsizing of Three-Phase Wireless Power Transfer System with 12 coils by Reducing Magnetic Interference (2020)
  • Author(s): R. Kusui, K. Kusaka, J. Itoh, S. Obayashi, T. Shijo, M. Ishida
  • Organizer: IEEE 29th International Symposium on Industrial Electronics (ISIE)
  • Int'l Joint Research
• [Presentation] Three-phase AC-DC Converter for EV Rapid Charging with Wireless Communication for Decentralized Controller (2019)
  • Author(s): K. Ohata, M. Adachi, K. Kusaka, J. Itoh
  • Organizer: International Conference on Power Electronics
  • Int'l Joint Research
• [Presentation] 電気自動車向けワイヤレス給電コイルのパーミアンス法を用いた設計と評価 (2019)
  • Author(s): 古川啓太, 日下佳祐, 伊東淳一
  • Organizer: 自動車技術会2019年春季大会学術講演会
• [Presentation] マトリックスコンバータを用いた三相ワイヤレス給電システム (2019)
  • Author(s): 山ノ口皓喜, 宅間春介, 日下佳祐, 伊東淳一
  • Organizer: 電気学会産業応用部門大会
• [Presentation] Three-Phase Wireless Power Supply System Using Matrix Converter (2019)
  • Author(s): J. Itoh, K. Yamanokuchi, S. Takuma, K. Kusaka
  • Organizer: European Power Electronics Conference 2019
  • Int'l Joint Research
• [Presentation] 三相12コイル非接触給電システムのコイル配置角度変更による小型化の検討 (2019)
  • Author(s): 楠居琳太郎, 古川啓太, 日下佳祐, 伊東淳一
  • Organizer: 電気関係学会北陸支部連合大会
• [Presentation] 大容量ワイヤレス電力伝送システムの負荷変動を考慮した冷却器構造の設計法 (2019)
  • Author(s): 溝口洸輔, 日下佳祐, 伊東淳一
  • Organizer: 電気学会半導体電力変換/モータドライブ合同研究会
• [Presentation] Computational Model of Coils for Wireless Power Transfer with Reluctance Network Analysis (2019)
  • Author(s): K. Furukawa, K. Kusaka, J. Itoh
  • Organizer: 20th International Symposium POWER ELECTRONICS Ee2019
  • Int'l Joint Research
• [Presentation] PWM駆動と方形波駆動を併用したマルチセルSoild-State Transformerの制御法 (2019)
  • Author(s): N.Kikuchi, H. N. Le, M. Miyashita, K. Kusaka, J. Itoh
  • Organizer: 電気学会東京支部新潟支所研究発表会
• [Presentation] Switching Device Number Reduction for Three-Phase Cascade-Modular Solid-State Transformer System with Employment of Three-Phase T-Type Converter (2019)
  • Author(s): H. N. Le, S. Nagai, K..Kusaka, J..Itoh
  • Organizer: Energy Conversion Congress Exposition 2019
  • Int'l Joint Research
• [Presentation] A 22 kW-85 kHz Three-phase Wireless Power Transfer System with 12 coils (2019)
  • Author(s): K. Kusaka, R. Kusui, J. Itoh, D. Sato, S. Obayashi, M. Ishida
  • Organizer: Energy Conversion Congress Exposition 2019
  • Int'l Joint Research
• [Presentation] 電流不連続モードで駆動する絶縁型AC-DCマトリックスコンバータの電流ひずみ改善法 (2019)
  • Author(s): S. Takuma, H. Watanabe, J. Itoh
  • Organizer: 令和2年 電気学会 全国大会
• [Presentation] 22kW三相12コイル非接触給電システムの漏えい電磁界評価 (2019)
  • Author(s): 日下佳祐, 楠居琳太郎, 伊東淳一, 司城徹, 尾林秀一, 石田正明
  • Organizer: 令和2年 電気学会 全国大会
• [Presentation] チョッパセルを用いた単相 Solid-state Transformer の 高パワー密度化に向けた単相電力脈動補償法 (2019)
  • Author(s): 菊地尚斗, 古川啓太, 宮下充, 日下佳祐, 伊東淳一
  • Organizer: 電気学会半導体電力変換研究会
• [Presentation] General Analytical Model for Inductive Power Transfer System with EMF Canceling Coils (2018)
  • Author(s): K. Furukawa, K. Kusaka, J. Itoh
  • Organizer: The 2018 International Power Electronics Conference
  • Int'l Joint Research
• [Presentation] Three-phase Inductive Power Transfer System with 12 coils for Radiation Noise Reduction (2018)
  • Author(s): K. Kusaka, J. Itoh
  • Organizer: The 2018 International Power Electronics Conference
  • Int'l Joint Research
• [Presentation] Single-phase Solid-State Transformer using Multi-call with Automatic Capacitor Voltage Balance Capability (2018)
  • Author(s): J. Itoh, K. Aoyagi, K. Kusaka, M. Adachi
  • Organizer: The 2018 International Power Electronics Conference
  • Int'l Joint Research
• [Presentation] Dead-time Compensation with DC Offset Current Elimination Method using Three-level Operation for Dual Active Bridge DC-DC Converter (2018)
  • Author(s): J. Itoh, K. Kawauchi, H. Higa
  • Organizer: Energy Conversion Congress Exposition 2018
  • Int'l Joint Research
• [Presentation] Radiative Noise Reduction Technique using 12 Coils Suitable for High-power Inductive Power Transfer (2018)
  • Author(s): K. Kusaka, K. Furukawa, J. Itoh
  • Organizer: Energy Conversion Congress Exposition 2018
  • Int'l Joint Research
• [Presentation] Comparative Verification of Radiation Noise Reduction Effect using Spread Spectrum for Inductive Power Transfer System (2018)
  • Author(s): K. Kusaka, K. Inoue, J. Itoh
  • Organizer: EVS 31 & EVTeC 2018
  • Int'l Joint Research
• [Presentation] Reduction of Transmission Power Error and Current for Dual Active Bridge DC-DC Converter in Energy Storage Systems (2018)
  • Author(s): J. Itoh, K. Kawauchi, H. Watanabe, K. Kusaka
  • Organizer: 7th International Conference on Renewable Energy Research and Applications
  • Int'l Joint Research
• [Presentation] Non-linear Dead-time Error Compensation Method of Dual Active Bridge DC-DC Converter for Variable DC-bus Voltage (2018)
  • Author(s): J. Itoh, K. Kawauchi, H. Watanabe
  • Organizer: 6th International Conference On Smart Grid
  • Int'l Joint Research
• [Presentation] Control Method of Flying Capacitor Converter Operated in Discontinuous Current Mode for High Voltage Photovoltaic Cell (2018)
  • Author(s): J. Itoh, R. Ishibashi, K. Kusaka
  • Organizer: 6th International Conference On Smart Grid
  • Int'l Joint Research