Research activities -Grid connection-

Original paper
  • N.Takaoka, H.Watanabe, J.Itoh: "Isolated DC to Single-Phase AC Converter with Active Power Decoupling Capability using Coupled Inductor", IEEJ Transactions on Industry Applications, Vol. 11, No. 2, pp. (2021)
  • ‚r. Takuma, J. Itoh: "Two-step Commutation for Three-phase-to-single-phase Matrix Converter with High-frequency Isolation", IEEJ Journal of Industry Applications, Vol. 8, No. 4, pp. 704-712 (2019)
  • H. Watanabe, J. Itoh, N. Koike, S. Nagai: "PV Micro-Inverter Topology Using LLC Resonant Converter", Energies, Vol. 12, No. 16, pp. 1-11 (2019)
  • J. Itoh, K. Aoyagi, K. Kusaka, M. Adachi: "Development of Solid-State Transformer for 6.6-kV Single-Phase Grid with Automatically Balanced Capacitor Voltage", IEEJ Transactions on Industry Applications, Vol. 8, No. 5, pp. 795-801 (2019)
  • H. N. Le, J. Itoh: "Inductance-Independent Nonlinearity Compensation for Single-Phase Grid-Tied Inverter Operating in Both Continuous and Discontinuous Current Mode", IEEE Transactions on Power Electronics, Vol. 34, No. 5, pp. 4904-4919 (2019)
  • H. N. Le, J. Itoh: "Discontinuous Current Mode Control for Minimization of Three-phase Grid-Tied Inverters in Photovoltaic System", IEEJ Journal of Industry Applications, Vol. 8, No. 1, pp. 90-97 (2019)
  • S. Nagai, J. Itoh: "Open-loop-based Island-mode Voltage Control Method for Single-phase Grid-tied Inverter with Minimized LC Filter", IEEJ Journal of Industry Applications, Vol. 8, No. 1, pp. 108-115 (2019)
  • S. Nagai, K. Kusaka, J. Itoh: "ZVRT Capability of Single-phase Grid-connected Inverter with High-speed Gate-block and Minimized LCL Filter Design", IEEE Transactions on Industry Applications, Vol. 54, No. 5, pp. 5387-5399 (2018)
  • H. Watanabe, T. Sakuraba, K..Furukawa, K. Kusaka, J. Itoh: "Development of DC to Single-Phase AC Voltage Source Inverter With Active Power Decoupling Based on Flying Capacitor DC/DC Converter", IEEE Transactions on Power Electonics, Vol. 33, No. 6, pp. (2018)
  • N. Takaoka, H. Takahashi, J. Itoh: "Isolated Single-Phase Matrix Converter Using Center-Tapped Transformer for Power Decoupling Capability", IEEE Transactions on Industry Applications, Vol. 54, No. 2, pp. 1523-1531 (2018)
  • T. Nakanishi, J. Itoh: "High Power Density Design for a Modular Multilevel Converter With an H-Bridge Cell Based on a Volume Evaluation of Each Component", IEEE Transactions on Power Electonics, Vol. 33, No. 3, pp. 1967 - 1984 (2018)
  • H.Watanabe, K.Koiwa, J. Itoh, Y.Ohnuma, S.Miyawaki: "Development of Electrolytic Capacitor Less Photovoltaic Grid Connected Inverter with Boost-up type Active Buffer Circuit", IEEJ Transactions on Industry Applications, Vol. 135, No. 5, pp. 467-474 (2015)
  • Y. Ohnuma, J. Itoh: "A Single-Phase Current-Source PV Inverter With Power Decoupling Capability Using an Active Buffer", , Vol. 51, No. 1, pp. 531-538 (2015)
  • K. Orikawa, H. Takahashi, H. Igarashi, J. Itoh: "Transition Control to Direct Transmission Mode of Matrix Converter for Flywheel Drive System without Rush Current", IEEJ Trans. D, Vol. 134, No. 1, pp. 82-89 (2013)
  • J. Itoh, K. Tanaka, S. Matsuo, N. Yamada: "Experimental Verification of General-Purpose Flywheel Energy System for Multiple Parallel Operations", IEEJ Trans. D, Vol. 134, No. 1, pp. 19-26 (2013)
  • Y. Ohnuma, J. Itoh: "A Single-phase-to-three-phase Power Converter with an Active Buffer and a Charge Circuit", IEEJ Journal of Industry Applications, Vol. 1, No. 1, pp. 44-54 (2012)
  • J. Itoh, F. Hayashi: "Ripple Current Reduction of a Fuel Cell for a Single-Phase Isolated Converter using a DC Active Filter with a Center Tap ", IEEE Trans. On PE, Vol. 25, No. 3, pp. 550-556 (2009)
  • International conference
  • Y. Miyada, K.Ohata, H.Watanabe, J. Itoh: ""Buck-Boost PFC Converter with Active Power Decoupling Capability Using Time-sharing Control"", IEEE Energy Conversion Congress & Expo 2023, Vol. , No. , pp. (2023)
  • K. Nishikawa, H. Watababe, J. Itoh: "V/f controlled Virtual PM Machine for Grid-connected Inverter", EPE'23 ECCE Europe, Vol. , No. 566, pp. (2023)
  • K. Ohata, K. Yamanokuchi, J. Itoh: "Wireless Distributed Control with Open-Phase Fault-Tolerance for Delta-Connected Three-Phase Three-Wire Solid-State Transformers", 11th International Conference on Power Electronics -ECCE Asia, Vol. , No. , pp. (2023)
  • H. Watanabe, J. Itoh: "Dynamic-Circulating-Current-Minimization Control for Isolated Three-phase AC-DC Converter with Matrix Converter", 2022 IEEE Energy Conversion Congress and Exposition (ECCE), Vol. , No. , pp. (2022)
  • S. Takuma, K. Kiri, H. Watanabe, J. Itoh: "Surge Voltage Reduction Method for DAB Matrix Converter using Circulating Current in Whole Load Condition", Energy Conversion Congress and Exposition 2021, Vol. , No. , pp. 2301-2307 (2021)
  • S. Nakamura, H. Watanabe, S. Takuma, K. Kiri, J. Itoh: "Isolated Three-Phase AC to DC Converter with Matrix Converter Applying Compensation for Voltage Error by Voltage-based Commutation", Energy Conversion Congress and Exposition 2021, Vol. , No. , pp. 2281-2287 (2021)
  • K. Yamanokuchi, H. Watanabe, J. Itoh: "Universal Smart Power Module Concept with High-speed Controller for Simplification of Power Conversion System Design", IEEE 2021 - Energy Conversion Congress & Exposition - Asia (ECCE Asia 2021), Vol. , No. , pp. 2484-2489 (2021)
  • K. Yamanokuchi, H. Watanabe, J. Itoh: "Droop-based Current Control Method in Autonomous Distributed Modular Power Conversion System", IEEE 2021 - Energy Conversion Congress & Exposition - Asia (ECCE Asia 2021), Vol. , No. , pp. 660-667 (2021)
  • T. Kinoshita, J.Itoh, A.Toba, S.Fujita: "Stability Analysis and Comprehensive Design of Grid-tied Inverter with Active Damped LCL Filter", IPEMC2020-ECCE Asia, Vol. , No. , pp. (2020)
  • J. Itoh, S. Nakamura, S. Takuma, H. Watanabe: "Isolated Three-phase AC to DC converter with Matrix Converter Applying Wide Output Voltage Operation", Energy Conversion Congress and Exposition 2020, Vol. , No. , pp. 4563-4570 (2020)
  • N. Takaoka, H. Watanabe, J. Itoh: "Isolated DC to Single-phase AC Converter with Active Power Decoupling Capability for Battery Storage System", 8th International Conference on Renewable Energy Research and Applications, No. 211, (2019)
  • S. Nagai, K. Tokui, H. Watanabe, J. Itoh: "Wind Turbine Generator Emulator with Current Control mode", 8th International Conference on Renewable Energy Research and Applications, No. 210 (2019)
  • S. Takuma, K. Kusaka, J. Itoh: "DC Ripple Component Cancelation Method of Isolated AC-DC Converter with Matrix Converter for Input Current Harmonics Reduction", Energy Conversion Congress Exposition 2019, pp. 6754-6762 (2019)
  • "H. N. Le, S. Nagai, K..Kusaka, J..Itoh: ""Switching Device Number Reduction for Three-Phase Cascade-Modular Solid-State Transformer System with Employment of Three-Phase T-Type Converter"", Energy Conversion Congress Exposition 2019, pp. 1093-1100 (2019)"
  • S. Nagai, H. Watanabe, J. Itoh: "Inverter Output Current Overshoot Suppression during Fault Ride-through Operation for Three-phase Grid-tied Inverter with Minimized Inductor", Energy Conversion Congress Exposition 2019, pp. 5056-5063 (2019)
  • J. Itoh, T. Kinoshita, H. N. Le: "Voltage THD Reduction with Discontinuous Current Mode Control for Islanded-mode Operation in Single-phase Grid-tied Inverter", EPE2019, Vol. , No. , pp. (2019)
  • S. Takuma, K. Kusaka, J. Itoh, Y. Ohnuma, S. Miyawaki: "A Novel Current Ripple Cancellation PWM for Isolated Three-phase Matrix DAB AC-DC Matrix Converter", EPE2019, Vol. , No. , pp. (2019)
  • J. Itoh, Satoshi Nakamura, Satoshi Nagai, Hiroki Watanabe: "FRT Operation for Single-Phase Grid-Tied Inverter with Active Power Decoupling Capability", ICPE 2019 ,WeD1-1 (2019)
  • H. Watanabe, J. Itoh, A. Iwabuchi: "Experimental Verification of DC to Single-phase AC converter with Power Decoupling Capability using 1.2 kV SiC-MOSFET Module", WiPDA2019 , Vol. , No. , pp. (2019)
  • A. Omomo, H. N. Le, K. Kusaka, J. Itoh: "Loss Analysis of T-type NPC Inverter with Active Power Decoupling Capability Operated in Discontinuous Current Mode", WiPDA2019 , Vol. , No. , pp. (2019)
  • H.Watanabe, J. Itoh, S. Nagai, N. Koike: "Converter Loss Evaluation of Flyback Converter Applying Power Decoupling Capability with ZVS operation", Power Conversion and Intelligent Motion Europe 2019, Vol. , No. 102, pp. 685-692 (2019)
  • S. Nagai, J. Itoh: "FRT Capability of Three-phase Grid-tied Converter with Minimized Inductor", The Applied Power Electronics Conference and Exposition 2019, Vol. , No. , pp. 1070-1077 (2019)
  • H. Watanabe, J. Itoh, Q. Roudier: "Single-phase Power decoupling Technique Utilizing Hybrid Method with Passive and Active Power Decoupling", The 2nd IEEE International Power Electronics and Application Conference and Exposition, Vol. TS6.13.1, No. , pp. (2018)
  • A. Omomo, K. Kusaka , J. Itoh, H. N. Le, N.Takaoka: "T-type NPC Inverter with Active Power Decoupling Method using Discontinuous Current Mode for Micro-Inverter", 7th International Conference on Renewable Energy Research and Applications (ICRERA 2018), Vol. , No. , pp. (2018)
  • S. Takuma, K. Kusaka , J. Itoh: "Single-step commutation method for three-phase to single-phase matrix converter", Energy Conversion Congress Exposition 2018, Vol. , No. , pp. 6228-6235 (2018)
  • H. N. Le, J. Itoh: "Passive-Damped LCL Filter Optimization for Single-Phase Grid-Tied Inverters Operating in both Continuous and Discontinuous Current Mode", Energy Conversion Congress Exposition 2018, Vol. , No. , pp. (2018)
  • A. Omomo, N. Takaoka, H. N. Le, K. Kusaka, J, Itoh: "T-type NPC Inverter with Active Power Decoupling Capability using Discontinuous Current Mode", 20th European Conference on Power Electronics and Applications, Vol. , No. , pp. (2018)
  • N. Takaoka, K. Kusaka, H. Higa, J. Itoh: "Novel DC to Single-Phase Isolated AC Converter using Coupled Inductor with Power Decoupling Capability", 20th European Conference on Power Electronics and Applications, Vol. LS4d, No. 394, pp. 1-10 (2018)
  • H. Watanabe, J. Itoh: "Zero Voltage Switching Scheme for Flyback Converter to Ensure Compatibility with Active Power Decoupling Capability", The 2018 International Power Electronics Conference, Vol. , No. 22P1-3, pp. 896-903 (2018)
  • S. Takuma, J. Itoh: "Two-step commutation for Isolated DC-AC Converter with Matrix Converter", The 2018 International Power Electronics Conference, Vol. , No. 23P1-4, pp. 2596-2603 (2018)
  • H. N. Le, J. Itoh: "Discontinuous Current Mode Control for Minimization of Three-phase Grid-Tied Inverter in Photovoltaic System", The 2018 International Power Electronics Conference, Vol. , No. 23G2-4, pp. 2519-2526 (2018)
  • S. Nagai, J. Itoh: "Open-loop-based Island-mode Voltage Control Method for Single-phase Grid-tied Inverter with Minimized LC Filter", The 2018 International Power Electronics Conference, Vol. , No. 21G2-3, pp. 534-541 (2018)
  • S. Takuma, J. Itoh: "Hybrid Commutation Method with Current Direction Estimation for Three-phase-to-single-phase Matrix Converter", The Applied Power Electronics Conference and Exposition 2018, Vol. , No. 2096, pp. 672-679 (2018)
  • A. Sagehashi, H. N. Le, J. Itoh: "One-Inductor Single-Stage Differential Boost Inverter Operated in Discontinuous Current Mode for Single-Phase Grid-Tied Photovoltaic System", The Applied Power Electronics Conference and Exposition 2017, Vol. , No. 2121, pp. (2018)
  • H. N. Le, J. Itoh: "Mixed Conduction Mode Control for Inductor Minimization in Grid-Tied Inverter", The 12th IEEE International Conference on Power Electronics and Drive Systems, Vol. , No. , pp. 893-900 (2017)
  • S. Nagai, K. Kusaka, J. Itoh: "ZVRT Capability of Minimized-LCL-filter-based Single-phase Grid-tied Inverter with High-speed Gate-block ", Energy Conversion Congress Exposition 2017, Vol. , No. 847, pp. 1757-1764 (2017)
  • J. Itoh, T. Sakuraba, H. Watanabe, N. Takaoka: "DC to Single-phase AC Grid-Connected Inverter using Back Type Active Power Decoupling Circuit without additional magnetic component", Energy Conversion Congress Exposition 2017, Vol. , No. , pp. 1765-1772 (2017)
  • H. N. Le, J. Itoh: "Current THD Reduction for High-Power-Density LCL-Filter-Based Grid-Tied Inverter Operated in Discontinuous Current Mode", EPE2017, Vol. DS2c, No. 0249, pp. (2017)
  • H. Watanabe, J. Itoh: "Highly-reliable Fly-back-based PV Micro inverter Applying Power Decoupling Capability without Additional Components", PCIM2017, Vol. , No. , pp. 681-688 (2017)
  • S. Nagai, K. Kusaka, J. Itoh: "FRT Capability of Single-phase Grid-connected Inverter with Minimized Interconnected Inductor", The Applied Power Electronics Conference and Exposition 2017, Vol. , No. 1800, pp. 2802-2809 (2017)
  • H.Watanabe, J. Itoh: "Isolated Single-phase AC grid Connected Converter With small inductors and capacitors for micro-inverters", The Applied Power Electronics Conference and Exposition 2017, Vol. , No. 2035, pp. 1542-1549 (2017)
  • S. Nagai, H. N. Le, T. Nagano, K. Orikawa, J.Itoh: "Minimization of Interconnected Inductor for Single-Phase Inverter with High-Performance Disturbance Observer", the 2016 8th International Power Electronics and Motion Control Conference - ECCE Asia, No.Wb8-06 , pp. (2016)
  • H.Watanabe, K. Kusaka, K. Furukawa, J. Itoh: "DC to Single-phase AC Voltage Source Inverter with Power Decoupling Circuit based on Flying Capacitor Topologu for PV System", The Applied Power Electronics Conference and Exposition 2016, pp. 1336-1343 (2016)
  • N.Takaoka, J.Itoh: "Battery Energy Storage System with Isolated Single-phase Matrix Converter using Center-tapped Transformer for Power Decoupling Capability", ICRERA2015, Vol. , No. , pp. (2015)
  • N.Takaoka, J.Itoh: "Revelation of Soft-Switching Operation for Isolated DC to Single-phase AC Converter with Power Decoupling", IECON2015, Vol. , No. , pp. (2015)
  • D. Sato, J. Itoh, T. Watanabe, K. Kawagoe, K. Kato, N. Yamada: "Development of Magnetic Coupling with Variable Thrust Structure for Flywheel Energy Storage System in Long Lifetime UPS", 37th International Telecommunications Energy Conference, Vol. , No. , pp. (2015)
  • H.Watanabe, J.Itoh: "Novel DC to Single-phase AC Isolated Current Source Inverter with Power Decoupling Capability for Micro-Inverter system", , Vol. , No. , pp. 158-165 (2015)
  • H.Watanabe, K.Koiwa, J. Itoh, Y.Ohnuma, S.Miyawaki: "Miniaturization of the Boost-up type Active Buffer Circuit in a Single-phase Inverter ", The 2014 International Power Electronics Conference, Vol. , No. 19P1-4, pp. 84-91 (2014)
  • J. Itoh, K.Tanaka, Y.Saiki, N. Yamada, K.Kato: "Design and Experimental Evaluation of the Flywheel System for Power Leveling", IECON2013 (2013)
  • yBest paper in sessionz
  • R. Oshima, H. Takahashi, J. Itoh: "Experimental Verification of Isolated DC-AC Converter with Matrix Converter using Pulse Density Modulation Method", 2013 Japan-Korea Joint Technical Workshop on Semiconductor Power Conversion, No. IEEJ-SPC-P1-03 (2013)
  • Y.Ohnuma, K.Orikawa, J. Itoh: "A Single-phase Current Source PV Inverter with Power Decoupling Capability using an Active Buffer ", IEEE Energy Conversion Congress and Expo 2013, pp. 3094-3101 (2013)
  • J. Itoh, K.Tanaka, S. Matsuo, N. Yamada: "Experimental Verification of Flywheel Power Leveling System Oriented to Low Cost and General Purpose Use", IEEE Energy Conversion Congress and Exposition, pp. 35-42 (2013)
  • J. Itoh, H.Watanabe, K.Koiwa, Y. Ohnuma: "Experimental verification of single-phase inverter with power decoupling function using boost chopper", EPE e13-ECCE Europe, the 15th European Conference on Power Electronics and Applications (2013)
  • K. Tanaka, J. Itoh, S. Matsuo, N. Yamada: "Power Control Method using Time Delay Compensation Scheme Based on Smith predictor for Flywheel Power Leveling System", The 10th IEEE International Conference on Power Electronics and Drive Systems,pp. 480-485 (2013)
  • J. Itoh, H. Igarashi: "Direct Grid Connection of Matrix Converter with Transition Control for Flywheel UPS", ICRERA (2012)
  • Y. Ohnuma, J. Itoh: "A Novel Single-phase Buck PFC AC-DC Converter using an Active Buffer", IEEE ECCE 2012, S108, pp. 4223-4229 (2012)