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• Article

  A 13.56 MHz antenna design with the efficiency improvement for the wireless power transfer system

  Cuong, N. T., Trung, N. K. & Akatsu, K., 2020, In: International Journal of Engineering Research and Technology. 13, 7, p. 1735-1741 7 p.

  Research output: Contribution to journal › Article › peer-review

  • Inductive power transmission
  • Antennas
  • Electric vehicles
  • Magnetic resonance
  • Transceivers

• Advanced torque control of permanent magnet synchronous motor using finite element analysis based motor model with a real-time simulator

  Tanabe, R. & Akatsu, K., 2017, In: IEEJ Journal of Industry Applications. 6, 3, p. 173-180 8 p.

  Research output: Contribution to journal › Article › peer-review

  • Torque control
  • Synchronous motors
  • Permanent magnets
  • Simulators
  • Finite element method
  3 Citations (Scopus)

• Analysis and PCB design of class D inverter for wireless power transfer systems operating at 13.56 MHz

  Trung, N. K., Ogata, T., Tanaka, S. & Akatsu, K., 2015, In: IEEJ Journal of Industry Applications. 4, 6, p. 703-713 11 p.

  Research output: Contribution to journal › Article › peer-review

  • Inductive power transmission
  • Networks (circuits)
  • Inductance
  23 Citations (Scopus)

• A novel reluctance magnetic gear for high-speed motor

  Aiso, K., Akatsu, K. & Aoyama, Y., 2019 May 1, In: IEEE Transactions on Industry Applications. 55, 3, p. 2690-2699 10 p., 28.

  Research output: Contribution to journal › Article › peer-review

  • Magnets
  • Rotors
  • Eddy currents
  • Strength of materials
  • Power transmission
  8 Citations (Scopus)

• A research trend of electric machines with development of finite element analysis

  Hijikata, H. & Akatsu, K., 2017 Jun 1, In: IEEJ Transactions on Electrical and Electronic Engineering. 12, p. S171-S176

  Research output: Contribution to journal › Article › peer-review

  • Electric machinery
  • Finite element method
  • Torque
  • Magnetic fields

• A study of dual winding method for compound magnetomotive force motor

  Hijikata, H., Shigeta, T., Kariya, N., Akatsu, K. & Kato, T., 2013 Nov 11, In: IEEJ Transactions on Industry Applications. 133, 10, p. 986-994 9 p.

  Research output: Contribution to journal › Article › peer-review

  • Magnets
  • Poles
  3 Citations (Scopus)

• A study on improvement in permanent magnet synchronous motor with high permeability magnet

  Miyamasu, M., Nakamura, Y., Akatsu, K. & Masuzawa, M., 2013 Oct 7, In: IEEJ Transactions on Industry Applications. 133, 9, p. 943-951 9 p.

  Research output: Contribution to journal › Article › peer-review

  • Magnets
  • Synchronous motors
  • Permanent magnets
  • Eddy currents
  • Fluxes
  3 Citations (Scopus)

• Basic properties of an axial-type switched reluctance motor

  Arihara, H. & Akatsu, K., 2013 Jan 28, In: IEEE Transactions on Industry Applications. 49, 1, p. 59-65 7 p., 6361291.

  Research output: Contribution to journal › Article › peer-review

  • Torque
  • Air
  • Inductance
  • Finite element method
  • Experiments
  29 Citations (Scopus)

• Complex vector form PI control for harmonic current control of a PMSM

  Okajima, Y. & Akatsu, K., 2017, In: IEEJ Transactions on Industry Applications. 137, 3, p. 238-245 8 p.

  Research output: Contribution to journal › Article › peer-review

  • Electric current control
  • Transient analysis
  • Controllers
  • Permanent magnets
  • Poles
  2 Citations (Scopus)

• Controlled voltage source vector control for switched reluctance motors using PWM method

  Nakao, N. & Akatsu, K., 2015 Oct 1, In: IEEJ Transactions on Industry Applications. 135, 10, p. 999-1008 10 p.

  Research output: Contribution to journal › Article › peer-review

  • Variable speed drives
  • Magnetization
  • Controllability
  • Hysteresis
  • Pulse width modulation
  2 Citations (Scopus)

• Controlled Voltage Source Vector Control for Switched Reluctance Motors Using PWM Method

  Nakao, N. & Akatsu, K., 2017 Jan 1, In: Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi). 198, 2, p. 27-38 12 p.

  Research output: Contribution to journal › Article › peer-review

  • Variable speed drives
  • Magnetization
  • Controllability
  • Hysteresis
  • Pulse width modulation
  2 Citations (Scopus)

• Coupled analysis technique involving magnetic-field-control/circuit simulation and loss estimation for permanent magnet synchronous machine

  Narita, K., Yamada, T., Sakashita, Y. & Akatsu, K., 2011 Dec 1, In: IEEJ Transactions on Industry Applications. 131, 11, p. 1309-1315+7

  Research output: Contribution to journal › Article › peer-review

  • Circuit simulation
  • Permanent magnets
  • Magnetic fields
  • Iron
  • Fluxes
  7 Citations (Scopus)

• Coupled analysis technique involving magnetic-field-control/circuit simulation and loss estimation for permanent magnet synchronous machine

  Narita, K., Yamada, T., Sakashita, Y. & Akatsu, K., 2013 May 1, In: Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi). 183, 3, p. 9-16 8 p.

  Research output: Contribution to journal › Article › peer-review

  • Circuit simulation
  • Permanent magnets
  • Magnetic fields
  • Iron
  • Fluxes

• Design and evaluation of a variable-flux flux-intensifying interior permanent-magnet machine

  Limsuwan, N., Kato, T., Akatsu, K. & Lorenz, R. D., 2014 Jan 1, In: IEEE Transactions on Industry Applications. 50, 2, p. 1015-1024 10 p., 6560407.

  Research output: Contribution to journal › Article › peer-review

  • Permanent magnets
  • Fluxes
  • Magnets
  • Magnetization
  • Torque
  127 Citations (Scopus)

• Design Methodology for Variable Leakage Flux IPM for Automobile Traction Drives

  Kato, T., Minowa, M., Hijikata, H., Akatsu, K. & Lorenz, R. D., 2015 Sep 1, In: IEEE Transactions on Industry Applications. 51, 5, p. 3811-3821 11 p., 7115116.

  Research output: Contribution to journal › Article › peer-review

  • Automobiles
  • Fluxes
  • Permanent magnets
  • Torque
  • Rotors
  21 Citations (Scopus)

• Design theory of a variable characteristic motor using compound magnetomotive forces

  Kato, T., Akatsu, K., Shigeta, T., Nakano, M., Tsukamoto, M. & Arimitsu, M., 2011 Sep 26, In: IEEJ Transactions on Industry Applications. 131, 8, p. 1049-1058 10 p.

  Research output: Contribution to journal › Article › peer-review

  • Electric current control
  • Magnets
  • Synchronous motors
  • Permanent magnets
  • Poles
  2 Citations (Scopus)

• Efficiency comparison between brushless DC motor and brushless AC motor considering driving method and mAChine design

  Miyamasu, M. & Akatsu, K., 2013, In: IEEJ Journal of Industry Applications. 2, 1, p. 79-86 8 p.

  Research output: Contribution to journal › Article › peer-review

  • AC motors
  • Brushless DC motors
  • Machine design
  • Synchronous motors
  • Pulse width modulation
  8 Citations (Scopus)

• Efficiency Contours and Loss Minimization Over a Driving Cycle of a Variable Flux-Intensifying Machine

  Fukushige, T., Limsuwan, N., Kato, T., Akatsu, K. & Lorenz, R. D., 2015 Jul 1, In: IEEE Transactions on Industry Applications. 51, 4, p. 2984-2989 6 p., 07046393.

  Research output: Contribution to journal › Article › peer-review

  • Magnetization
  • Magnets
  • Fluxes
  • Permanent magnets
  • Demagnetization
  55 Citations (Scopus)

• Electric drive technologies contributing to low-fuel-comsumption vehicles

  Mizutani, R., Tachibana, T., Morimoto, M., Akatsu, K. & Hoshi, N., 2015 Sep 1, In: IEEJ Transactions on Industry Applications. 135, 9, p. 884-891 8 p.

  Research output: Contribution to journal › Article › peer-review

  • Electric drives
  • Fuel economy
  • Internal combustion engines
  12 Citations (Scopus)

• Electromagnetic Force Acquisition Distributed in Electric Motor to Reduce Vibration

  Ito, T. & Akatsu, K., 2017 Mar 1, In: IEEE Transactions on Industry Applications. 53, 2, p. 1001-1008 8 p., 7723868.

  Research output: Contribution to journal › Article › peer-review

  • Electric motors
  • Stators
  • Torque
  • Strain gages
  • Poles
  11 Citations (Scopus)

• Experimental studies of variable leakage flux type IPMSM

  Hijikata, H., Akatsu, K. & Kato, T., 2017 Jan 1, In: IEEJ Transactions on Industry Applications. 137, 9, p. 737-743 7 p.

  Research output: Contribution to journal › Article › peer-review

  • Fluxes
  • Synchronous motors
  • Permanent magnets
  • Traction motors
  • Automobiles
  4 Citations (Scopus)

• Measurement and electromagnetic field analysis of IEEJ benchmark IPM motors - Comparison of distributed winding and concentrated winding IPMSMs

  Kaimori, H. & Akatsu, K., 2015, In: Journal of the Institute of Electrical Engineers of Japan. 135, 2, p. 75-82 8 p.

  Research output: Contribution to journal › Article › peer-review

• Principle and basic characteristic of MATRIX motor with variable parameters achieved through arbitrary winding connections

  Hijikata, H. & Akatsu, K., 2013, In: IEEJ Journal of Industry Applications. 2, 6, p. 283-291 9 p.

  Research output: Contribution to journal › Article › peer-review

  • Synchronous motors
  • Permanent magnets
  • Power electronics
  • Electronic equipment
  • Torque
  6 Citations (Scopus)

• Proposal and machine characteristics of a single-phase srm driven by commercial AC power supply

  Aiso, K. & Akatsu, K., 2015 Nov 1, In: IEEJ Transactions on Industry Applications. 135, 11, p. 1091-1099 9 p.

  Research output: Contribution to journal › Article › peer-review

  • Switching circuits
  • Induction motors
  • Sensors
  • Experiments

• Rare earth reduction using a novel variable magnetomotive force flux-intensified IPM machine

  Kato, T., Limsuwan, N., Yu, C. Y., Akatsu, K. & Lorenz, R. D., 2014 Jan 1, In: IEEE Transactions on Industry Applications. 50, 3, p. 1748-1756 9 p., 6607140.

  Research output: Contribution to journal › Article › peer-review

  • Rare earths
  • Permanent magnets
  • Magnets
  • Fluxes
  • Dysprosium
  75 Citations (Scopus)

• Secondary resistive losses with high-frequency injection-based self-sensing in IPM machines

  Limsuwan, N., Kato, T., Yu, C. Y., Tamura, J., Reigosa, D. D., Akatsu, K. & Lorenz, R. D., 2013 Aug 5, In: IEEE Transactions on Industry Applications. 49, 4, p. 1499-1507 9 p., 6491469.

  Research output: Contribution to journal › Article › peer-review

  • Permanent magnets
  • Magnets
  • Eddy currents
  • Iron
  • Fluxes
  20 Citations (Scopus)

• Selection method of controller gains for position sensorless control of IPMSM drives

  Lee, D. & Akatsu, K., 2019, In: IEEJ Journal of Industry Applications. 8, 4, p. 720-726 7 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Sensorless control
  • Synchronous motors
  • Permanent magnets
  • Electromotive force
  • Rotors
  1 Citation (Scopus)

• Suppressing pulsating torques: Torque ripple control for synchronous motors

  Nakao, N. & Akatsu, K., 2014 Nov 1, In: IEEE Industry Applications Magazine. 20, 6, p. 33-44 12 p., 6891141.

  Research output: Contribution to journal › Article › peer-review

  • Torque control
  • Synchronous motors
  • Torque
  • Analytical models
  • Permanent magnets
  70 Citations (Scopus)

• Torque ripple control based on instantaneous torque estimation in PMSMs

  Nakao, N. & Akatsu, K., 2011 Dec 1, In: IEEJ Transactions on Industry Applications. 131, 9, p. 1120-1127+4

  Research output: Contribution to journal › Article › peer-review

  • Torque control
  • Synchronous motors
  • Permanent magnets
  • Feedforward control
  • Torque
  8 Citations (Scopus)

• Variable magnetization machine in electrified vehicle application

  Fukushige, T., Kato, T., Akatsu, K. & Lorenz, R. D., 2015 Sep 1, In: IEEJ Transactions on Industry Applications. 135, 9, p. 922-928 7 p.

  Research output: Contribution to journal › Article › peer-review

  • Magnetization
  • Rotors
  • Magnetic circuits
  • Magnets
  • Electric vehicles
  3 Citations (Scopus)

• Vector control specialized for switched reluctance motor drives

  Nakao, N. & Akatsu, K., 2014 Jan 1, In: IEEJ Transactions on Industry Applications. 134, 12, p. 1006-1015 10 p.

  Research output: Contribution to journal › Article › peer-review

  • Torque
  • Torque control
  • Electric current control
  • Control theory
  • Magnetic fields
  4 Citations (Scopus)

• Wide Speed Range Operation by Low-Voltage Inverter-Fed MATRIX Motor for Automobile Traction Motor

  Hijikata, H., Sakai, Y., Akatsu, K., Miyama, Y., Arita, H. & Daikoku, A., 2017 Sep 11, (Accepted/In press) In: IEEE Transactions on Power Electronics.

  Research output: Contribution to journal › Article › peer-review

  • Traction motors
  • Automobiles
  • Torque
  5 Citations (Scopus)

• 可変磁力モータの着磁制御による高速領域電圧抑制手法及び車両のトルク脈動に関する考察

  Sasaki, K., Gagas, B. S., Inoue, K., Fukushige, T., Kato, T., Akatsu, K. & Lorenz, R. D., 2019 Jan 1, In: IEEJ Transactions on Industry Applications. 139, 6, p. 550-557 8 p.

  Research output: Contribution to journal › Article › peer-review

  • Magnetization
  • Fluxes
  • Torque
  • Permanent magnets
  • Trajectories

• 電動工具用自己冷却 SRM の提案と実機特性

  Koinuma, K. & Akatsu, K., 2020 Nov 1, In: IEEJ Transactions on Industry Applications. 140, 11, p. 826-833 8 p.

  Research output: Contribution to journal › Article › peer-review

  • Hand tools
  • Cooling
  • Brushless DC motors
  • Torque
  • Fans
• Comment/debate

  IEEJ Industry applications society news letter let's enjoy "globalization".

  Akatsu, K., 2019, In: IEEJ Transactions on Industry Applications. 139, 10, p. 1 1 p.

  Research output: Contribution to journal › Comment/debate › peer-review

  Open Access
• Conference article

  Variable characteristic permanent magnet motor for automobile application

  Kato, T., Fukushige, T., Akatsu, K. & Lorenz, R., 2014 Jan 1, In: SAE Technical Papers. 1

  Research output: Contribution to journal › Conference article › peer-review

  • Magnetization
  • Automobiles
  • Permanent magnets
  • Magnets
  • Fluxes
  10 Citations (Scopus)
• Conference contribution

  5-phase double winding PMSM with integrated SiC inverter for In-Wheel Motor

  Fukuda, K. & Akatsu, K., 2019 Aug, 2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019. Institute of Electrical and Electronics Engineers Inc., 8921453. (2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Permanent Magnet Synchronous Motor
  • Inverter
  • Wheel
  • Wheels
  • Torque
  1 Citation (Scopus)

• A 3^rd Harmonic Current Control of the Open-Winding Permanent Magnet Synchronous Motor for the Torque Ripple Reduction

  Honda, K. & Akatsu, K., 2019 Nov, 2019 IEEE 4th International Future Energy Electronics Conference, IFEEC 2019. Institute of Electrical and Electronics Engineers Inc., 9014989. (2019 IEEE 4th International Future Energy Electronics Conference, IFEEC 2019).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Electric current control
  • Synchronous motors
  • Permanent magnets
  • Torque
  • Poles

• A basic study of MATRIX motor

  Hijikata, H. & Akatsu, K., 2011 Nov 28, IEEE Energy Conversion Congress and Exposition: Energy Conversion Innovation for a Clean Energy Future, ECCE 2011, Proceedings. p. 3285-3290 6 p. 6064212. (IEEE Energy Conversion Congress and Exposition: Energy Conversion Innovation for a Clean Energy Future, ECCE 2011, Proceedings).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Semiconductor switches
  • Switches
  6 Citations (Scopus)

• A built-in high temperature half-bridge power module with low stray inductance and low thermal resistance for in-wheel motor application

  Suzuki, T., Yamashita, M., Mori, T., Araki, S., Tanimoto, S., Iizuka, S., Niitsuma, Y. & Akatsu, K., 2017 Jan 1, Silicon Carbide and Related Materials 2016. Zekentes, K., Zekentes, K., Vasilevskiy, K. V. & Frangis, N. (eds.). Trans Tech Publications Ltd, p. 677-680 4 p. (Materials Science Forum; vol. 897 MSF).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • wheels
  • thermal resistance
  • inductance
  • Heat resistance
  • Inductance
  3 Citations (Scopus)

• Advanced torque and current control techniques for PMSMs with a real-time simulator installed behavior motor model

  Tanabe, R. & Akatsu, K., 2014 Jan 1, 2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014. IEEE Computer Society, p. 1234-1241 8 p. 6869744. (2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Torque control
  • Electric current control
  • Synchronous motors
  • Permanent magnets
  • Simulators

• Air-Cooled Multi-Phase Dual-Winding In-Wheel Motor Integrated with Ultra Small SiC Module

  Akatsu, K. & Tanimoto, S., 2020 Oct 11, ECCE 2020 - IEEE Energy Conversion Congress and Exposition. Institute of Electrical and Electronics Engineers Inc., p. 41-46 6 p. 9236414. (ECCE 2020 - IEEE Energy Conversion Congress and Exposition).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Wheel
  • Wheels
  • Inverter
  • Module
  • Cooling

• A Method of Torque Ripple Reduction by Using Harmonic Current Injection in PMSM

  Nishio, T., Ryosuke, Y., Masahiko, K. & Akatsu, K., 2019 Nov, 2019 IEEE 4th International Future Energy Electronics Conference, IFEEC 2019. Institute of Electrical and Electronics Engineers Inc., 9014937. (2019 IEEE 4th International Future Energy Electronics Conference, IFEEC 2019).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Permanent magnets
  • Torque
  • Saturation magnetization
  • Magnets
  • Traction motors
  2 Citations (Scopus)

• A method to suppress vibration due to fabrication tolerance by using triple three-phase winding motor

  Yang, K., Akatsu, K., Miyama, Y. & Okazaki, K., 2019 May, 2019 IEEE International Electric Machines and Drives Conference, IEMDC 2019. Institute of Electrical and Electronics Engineers Inc., p. 1863-1868 6 p. 8785114. (2019 IEEE International Electric Machines and Drives Conference, IEMDC 2019).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Fabrication
  • Degradation
  • Permanent magnets
  • Stators
  • Compensation and Redress

• An accurate iron loss evaluation method based on finite element analysis for switched reluctance motors

  Narita, K., Asanuma, T., Semba, K., Sano, H., Yamada, T., Aiso, K. & Akatsu, K., 2015 Oct 27, 2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015. Institute of Electrical and Electronics Engineers Inc., p. 4413-4417 5 p. 7310283

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Iron
  • Finite element method
  • Eddy currents
  • Hysteresis loops
  • Hysteresis
  13 Citations (Scopus)

• A new SRM drive method by using current source inverter

  Ando, G. & Akatsu, K., 2011 Aug 31, 8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia. p. 116-123 8 p. 5944559. (8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Networks (circuits)
  • Clamping devices
  • Switches
  2 Citations (Scopus)

• An examination of impedance matching in receiving side of wireless power transfer system operating at 13.56MHz

  Sato, M., Trung, N. K. & Akatsu, K., 2015 Dec 18, 2015 IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015. Institute of Electrical and Electronics Engineers Inc., 7361563

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Inductive power transmission
  • Networks (circuits)
  • Diodes
  • Acoustic impedance

• An examination of optimizing input impedance for wireless power transfer operating with high power condition

  Uchida, K. & Akatsu, K., 2017 Jul 25, 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017. Institute of Electrical and Electronics Engineers Inc., p. 633-637 5 p. 7992112

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • High Power
  • Inductive power transmission
  • Impedance
  • Acoustic impedance
  • Output
  2 Citations (Scopus)

• An Improved Position Sensor Fault Detection and Algorithm Transition Using Adaptive Threshold for Sensorless Control of IPMSM

  Lee, D. & Akatsu, K., 2019 Oct, Proceedings: IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society. IEEE Computer Society, p. 910-915 6 p. 8927158. (IECON Proceedings (Industrial Electronics Conference); vol. 2019-October).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Sensorless control
  • Deceleration
  • Synchronous motors
  • Fault detection
  • Permanent magnets

• An optimized design of high-efficiency switched reluctance motor with single-phase input operation

  Yoneoka, Y. & Akatsu, K., 2011 Dec 16, 2011 International Conference on Electrical Machines and Systems, ICEMS 2011. 6073342. (2011 International Conference on Electrical Machines and Systems, ICEMS 2011).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Diodes
  • Specifications
  • Finite element method
  3 Citations (Scopus)