Research Output 1979 2019

2019

Active magnetic bearing for a liquid nitrogen pump

Kamioka, Y., Kajikawa, K., Hirai, H., Ozaki, S., Nakamura, T., Imagawa, S. & Ishiyama, A., Jun 3 2019, In : IOP Conference Series: Materials Science and Engineering. 502, 1, 012153.

Research output: Contribution to journalConference article

Open Access
Bearings (structural)
Magnetic bearings
Liquid nitrogen
Pumps
Submersible pumps

A simple conducted noise modeling method for DC-DC converters with accurate noise source model

Zhang, B., Zhang, S., Shoyama, M. & Takegami, E., Jan 25 2019, In : Research Reports on Information Science and Electrical Engineering of Kyushu University. 24, 1, p. 9-15 7 p.

Research output: Contribution to journalArticle

DC-DC converters

Carbon 1s X-ray photoelectron spectra of realistic samples of hydrogen-terminated and oxygen-terminated CVD diamond (111) and (001)

Kono, S., Kageura, T., Hayashi, Y., Ri, S. G., Teraji, T., Takeuchi, D., Ogura, M., Kodama, H., Sawabe, A., Inaba, M., Hiraiwa, A. & Kawarada, H., Mar 1 2019, In : Diamond and Related Materials. 93, p. 105-130 26 p.

Research output: Contribution to journalArticle

Diamond
Photoelectrons
Hydrogen
Chemical vapor deposition
Diamonds

Commercial Design and Operating Characteristics of a 300 kW Superconducting Induction Heater (SIH) Based on HTS Magnets

Choi, J., Kim, T., Lee, C. K., Jeon, D. S., Park, G. W., Cho, S., Park, M., Yu, I. K. & Iwakuma, M., Aug 1 2019, In : IEEE Transactions on Applied Superconductivity. 29, 5, 3700105.

Research output: Contribution to journalArticle

Superconducting magnets
superconducting magnets
heaters
induction
Metals

Common-mode noise evaluation study of two-level voltage source inverter using bus-clamping discontinuous PWM strategies

Hassan, M. S. & Shoyama, M., Jan 14 2019, 2018 IEEE International Telecommunications Energy Conference, INTELEC 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 8612306. (INTELEC, International Telecommunications Energy Conference (Proceedings); vol. 2018-October).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Pulse width modulation
Electric potential
Noise abatement
Passive filters
Frequency domain analysis

Common-Mode Voltage Investigation and Reduction of Split-Source Inverter

Hassan, M. S. & Shoyama, M., Feb 4 2019, 6th IEEE International Conference on Smart Grid, icSmartGrids 2018. Institute of Electrical and Electronics Engineers Inc., p. 118-122 5 p. 8634437. (6th IEEE International Conference on Smart Grid, icSmartGrids 2018).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electric potential
Electric motors
MATLAB
Topology
Modulation

Configuration and control method of bi-directional multiport converter for DC power supply system

Sakamoto, S. & Shoyama, M., Jan 14 2019, 2018 IEEE International Telecommunications Energy Conference, INTELEC 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 8612428. (INTELEC, International Telecommunications Energy Conference (Proceedings); vol. 2018-October).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electric power systems
Power transmission
Networks (circuits)
Electric potential
Experiments

Development of a novel noninvasive system for measurement and imaging of the arterial phase oxygen density ratio in the retinal microcirculation

Ishikawa, S., Yoshinaga, Y., Kantake, D., Nakamura, D., Yoshida, N., Hisatomi, T., Ikeda, Y., Ishibashi, T. & Enaida, H., Mar 4 2019, In : Graefe's Archive for Clinical and Experimental Ophthalmology. 257, 3, p. 557-565 9 p.

Research output: Contribution to journalArticle

Microcirculation
Oxygen
Breath Holding
Volunteers
Venules

DNA detection method based on the microbead velocity under traveling wave dielectrophoresis

Ding, Z., Nakano, M. & Suehiro, J., Jan 1 2019, BIODEVICES 2019 - 12th International Conference on Biomedical Electronics and Devices, Proceedings; Part of 12th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2019. Roque, A., Fred, A. & Gamboa, H. (eds.). SciTePress, p. 21-25 5 p. (BIODEVICES 2019 - 12th International Conference on Biomedical Electronics and Devices, Proceedings; Part of 12th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2019).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electrophoresis
DNA
Polymerase chain reaction
RNA

Dynamic performance analysis of long-distance power transmission system with DC superconducting cable from large photovoltaic generation

Higashikawa, K., Arai, J., Harada, K., Koshizuka, T., Matsushima, J., Ikeda, H., Harid, N. & Al-Durra, A., Aug 1 2019, In : IEEE Transactions on Applied Superconductivity. 29, 5, 8661674.

Research output: Contribution to journalArticle

Superconducting cables
power transmission
Power transmission
cables
direct current

Economic evaluation of 23 kV tri-axial HTS cable application to power system

Lee, C., Choi, J., Yang, H., Park, M. & Iwakuma, M., Aug 1 2019, In : IEEE Transactions on Applied Superconductivity. 29, 5, 8678485.

Research output: Contribution to journalArticle

Superconducting cables
cables
economics
Cables
Economics

Effect of viscosity on the AC magnetization of magnetic nanoparticles under different AC excitation fields

Yoshida, T., Nakamura, T., Higashi, O. & Enpuku, K., Feb 1 2019, In : Journal of Magnetism and Magnetic Materials. 471, p. 334-339 6 p.

Research output: Contribution to journalArticle

Magnetization
alternating current
Viscosity
viscosity
Nanoparticles
1 Citation (Scopus)

Effects of size and anisotropy of magnetic nanoparticles associated with dynamics of easy axis for magnetic particle imaging

Ota, S., Matsugi, Y., Nakamura, T., Takeda, R., Takemura, Y., Kato, I., Nohara, S., Sasayama, T., Yoshida, T. & Enpuku, K., Mar 15 2019, In : Journal of Magnetism and Magnetic Materials. 474, p. 311-318 8 p.

Research output: Contribution to journalArticle

Anisotropy
Nanoparticles
harmonics
Imaging techniques
nanoparticles

EMI prediction and reduction of zero-crossing noise in totem-pole bridgeless PFC converters

Zhang, B., Lin, Q., Imaoka, J., Shoyama, M., Tomioka, S. & Takegami, E., Jan 1 2019, In : Journal of Power Electronics. 19, 1, p. 278-287 10 p.

Research output: Contribution to journalArticle

Signal interference
Poles
Noise abatement
Electric potential
strands
Tapes
tapes
alternating current
coils

Feasibility study of superconducting cable application to oil/gas power supply network

Arai, J., Higashikawa, K., Koshizuka, T., Ikeda, H., Harid, N. & Al-Durra, A., Jan 1 2019, In : IEEE Transactions on Industry Applications. 55, 1, p. 145-151 7 p., 8463570.

Research output: Contribution to journalArticle

Superconducting cables
Gas oils
Gas plants
Cables
Electric potential

Flux-pinning properties of BaHfO 3 -doped EuBCO-coated conductors fabricated by Hot-Wall PLD

Fujita, S., Muto, S., Hirata, W., Yoshida, T., Kakimoto, K., Iijima, Y., Daibo, M., Kiss, T., Okada, T. & Awaji, S., Jan 1 2019, In : IEEE Transactions on Applied Superconductivity. 29, 5, 8629911.

Research output: Contribution to journalArticle

Flux pinning
flux pinning
Pulsed laser deposition
Deposition rates
pulsed laser deposition

Formation of nanoporous SiO2 films with super-low dielectric constant by F2 laser deposition

Miyano, R., Kikuchi, T., Imokawa, K., Nakamura, D. & Ikenoue, H., Jan 1 2019, Synthesis and Photonics of Nanoscale Materials XVI. Geohegan, D. B., Dubowski, J. J. & Kabashin, A. V. (eds.). SPIE, 109070S. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 10907).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

laser deposition
Dielectric Constant
SiO2
Permittivity
Partial pressure

High Performance Coated Conductors Fabricated by UTOC-MOD Process

Izumi, T., Nakaoka, K., Sato, M., MacHi, T., Ibi, A., Yoshida, R., Kato, T., Miura, M., Kiss, T. & Inoue, M., Aug 1 2019, In : IEEE Transactions on Applied Superconductivity. 29, 5, 8710275.

Research output: Contribution to journalArticle

metal coatings
Metal coatings
conductors
Metals
coatings

In-Field Transport Properties at Grain Boundaries in BaHfO 3 -doped SmBa 2 Cu 3 O y Bicrystal Films at Low Temperatures

Tsuchiya, Y., Akita, J., Ichino, Y., Miura, S. & Yoshida, Y., Aug 1 2019, In : IEEE Transactions on Applied Superconductivity. 29, 5, 8662621.

Research output: Contribution to journalArticle

Bicrystals
bicrystals
Transport properties
Grain boundaries
grain boundaries
1 Citation (Scopus)

Influence of Ni, Ti and NiTi alloy nanoparticles on hydrothermally grown ZnO nanowires for photoluminescence enhancement

Patra, N., Karuturi, S. K., Vasa, N. J., Nakamura, D., Higashihata, M., Singh, V. & Palani, I. A., Jan 5 2019, In : Journal of Alloys and Compounds. 770, p. 1119-1129 11 p.

Research output: Contribution to journalArticle

Nanowires
Photoluminescence
Metals
Nanoparticles
Metal nanoparticles

Laser Assisted Doping of Silicon Carbide Thin Films Grown by Pulsed Laser Deposition

Paneerselvam, E., Lakshmi Narayanan, V. K., Vasa, N. J., Higashihata, M., Nakamura, D., Ikenoue, H. & Ramachandra Rao, M. S., Jun 15 2019, In : Journal of Electronic Materials. 48, 6, p. 3468-3478 11 p.

Research output: Contribution to journalArticle

Pulsed laser deposition
Silicon carbide
silicon carbides
pulsed laser deposition
Doping (additives)

Low-frequency eddy current testing using HTS coil driven by PWM inverter

Sasayama, T. & Enpuku, K., Jan 1 2019, In : International Journal of Applied Electromagnetics and Mechanics. 59, 4, p. 1275-1282 8 p.

Research output: Contribution to journalArticle

Eddy current testing
pulse duration modulation
eddy currents
Pulse width modulation
coils
1 Citation (Scopus)

Magnetic parameters evaluation of magnetic nanoparticles for use in biomedical applications

Elrefai, A. L., Yoshida, T. & Enpuku, K., Mar 15 2019, In : Journal of Magnetism and Magnetic Materials. 474, p. 522-527 6 p.

Research output: Contribution to journalArticle

Nanoparticles
nanoparticles
evaluation
Saturation magnetization
Magnetization
Pickups
Magnetometers
inductance
Inductance
magnetometers

Microfabrication of Au film using optical vortex beam

Kawagoe, S., Nakamura, R., Tasaki, R., Oshima, H., Higashihata, M., Nakamura, D. & Omatsu, T., Apr 1 2019, In : Journal of Laser Micro Nanoengineering. 14, 1, p. 31-34 4 p.

Research output: Contribution to journalArticle

Open Access
Optical films
Microfabrication
Vortex flow
vortices
Angular momentum

Normally-OFF Two-Dimensional Hole Gas Diamond MOSFETs Through Nitrogen-Ion Implantation

Oi, N., Kudo, T., Inaba, M., Okubo, S., Onoda, S., Hiraiwa, A. & Kawarada, H., Jun 1 2019, In : IEEE Electron Device Letters. 40, 6, p. 933-936 4 p., 8715486.

Research output: Contribution to journalArticle

Diamond
MOSFET devices
Ion implantation
Diamonds
Nitrogen
Superconducting cables
renewable energy
energy storage
Energy storage
cables

Sampled-Data Filters with Compactly Supported Acquisition Prefilters

Yamamoto, Y., Yamamoto, K. & Nagahara, M., Jan 18 2019, 2018 IEEE Conference on Decision and Control, CDC 2018. Institute of Electrical and Electronics Engineers Inc., p. 6650-6655 6 p. 8619614. (Proceedings of the IEEE Conference on Decision and Control; vol. 2018-December).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Signal Processing
Signal processing
Sampled-data Control
Filter
Signal Reconstruction

Sensitivity Function Trade-Offs for Networks with a String Topology

Pates, R. & Yamamoto, K., Jan 18 2019, 2018 IEEE Conference on Decision and Control, CDC 2018. Institute of Electrical and Electronics Engineers Inc., p. 5869-5873 5 p. 8619555. (Proceedings of the IEEE Conference on Decision and Control; vol. 2018-December).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Strings
Trade-offs
Topology
Feedback
Low Frequency

Synthesis of GeSn particles with high substitutional Sn concentration by pulsed laser deposition

Nakashima, T., Kikuchi, T., Imokawa, K., Nakamura, D. & Ikenoue, H., Jan 1 2019, Synthesis and Photonics of Nanoscale Materials XVI. Geohegan, D. B., Dubowski, J. J. & Kabashin, A. V. (eds.). SPIE, 109070P. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 10907).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Pulsed Laser Deposition
Pulsed laser deposition
pulsed laser deposition
Synthesis
Atoms

Theoretical Investigation of Current-Sharing Properties of Three-Strand Parallel Conductors Composed of REBa 2 Cu 3 O y Superconducting Tapes

Sagawa, S., Miura, S., Iwakuma, M., Fukumoto, Y., Yoshida, K., Sato, S. & Izumi, T., Aug 1 2019, In : IEEE Transactions on Applied Superconductivity. 29, 5, 8629299.

Research output: Contribution to journalArticle

Superconducting tapes
strands
Tapes
tapes
conductors

Wash-free detection of biomaterial utilizing magnetic markers and MR sensor

Irie, K., Akiyoshi, K., Yoshida, T. & Enpuku, K., Jan 25 2019, In : Research Reports on Information Science and Electrical Engineering of Kyushu University. 24, 1, p. 17-22 6 p.

Research output: Contribution to journalArticle

Biomaterials
Sensors
Proteins
Washing
Experiments

エネルギー分野のビッグデータとその活用

Murata, J., Jan 1 2019, In : IEEJ Transactions on Power and Energy. 139, 6, p. 394-397 4 p.

Research output: Contribution to journalArticle

Planning
Big data
Industry
2018

A 10 Hz Short-Pulse CO 2 Laser System for Extreme Ultraviolet Source

Amano, R., Dinh, T. H., Sasanuma, A., Arai, G., Fujii, Y., Takahashi, A., Nakamura, D., Okada, T., Miura, T. & Higashiguchi, T., Jan 1 2018, X-Ray Lasers 2016 - Proceedings of the 15th International Conference on X-Ray Lasers. Kawachi, T., Bulanov, S. V., Daido, H. & Kato, Y. (eds.). Springer Science and Business Media, LLC, p. 367-371 5 p. (Springer Proceedings in Physics; vol. 202).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

pulses
lasers
power amplifiers
repetition
pulse duration

AC Loss Property of Stacked REBCO Superconducting Multifilamentary Tapes under Perpendicular Magnetic Field

Sasa, H., Ito, T., Iwakuma, M., Miura, S., Izumi, T., MacHi, T. & Ibi, A., Jul 26 2018, In : Journal of Physics: Conference Series. 1054, 1, 012037.

Research output: Contribution to journalConference article

tapes
alternating current
magnetic fields
filaments
scoring
6 Citations (Scopus)

A Current Sharing Method Utilizing Single Balancing Transformer for a Multiphase LLC Resonant Converter with Integrated Magnetics

Noah, M., Endo, S., Ishibashi, H., Nanamori, K., Imaoka, J., Umetani, K. & Yamamoto, M., Jun 1 2018, In : IEEE Journal of Emerging and Selected Topics in Power Electronics. 6, 2, p. 977-992 16 p.

Research output: Contribution to journalArticle

Stars
Magnetic circuits
Inductance
Transistors
Capacitors
3 Citations (Scopus)

A Distributed Electricity Trading System in Active Distribution Networks Based on Multi-Agent Coalition and Blockchain

Luo, F., Dong, Z. Y., Liang, G., Murata, J. & Xu, Z., Jan 1 2018, (Accepted/In press) In : IEEE Transactions on Power Systems.

Research output: Contribution to journalArticle

Electric power distribution
Electricity
Energy resources
Multi agent systems

Ageing Mitigation Control Method for Power Devices in Multilevel Inverters in Standalone PV Systems

Aly, M., Ahmed, E. M. & Shoyama, M., Dec 3 2018, 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018. Institute of Electrical and Electronics Engineers Inc., p. 5737-5741 5 p. 8557707. (2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Photovoltaic System
Aging of materials
Inverter
Leakage Current
Mitigation
1 Citation (Scopus)

A Leakage Flux Cancellation Technique for Series-Parallel Combined Resonant Circuits with Asymmetric Rotary Transformers Used for Ultrasonic Spindle Drive

Imaoka, J. & Shoyama, M., Oct 22 2018, 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018. Institute of Electrical and Electronics Engineers Inc., p. 1554-1561 8 p. 8507729. (2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Resonant circuits
Ultrasonics
Fluxes
Circuit resonance
Networks (circuits)
5 Citations (Scopus)

A Magnetic Design Method Considering DC-Biased Magnetization for Integrated Magnetic Components Used in Multiphase Boost Converters

Imaoka, J., Okamoto, K., Kimura, S., Noah, M., Martinez, W., Yamamoto, M. & Shoyama, M., Apr 1 2018, In : IEEE Transactions on Power Electronics. 33, 4, p. 3346-3362 17 p., 7932878.

Research output: Contribution to journalArticle

Magnetization
Electric current control
Power converters
Switching frequency
Saturation magnetization

An enhanced PWM method for loss balancing of five level T-type inverter in PV systems

Aly, M., Ahmed, E. M., Orabi, M. & Shoyama, M., Apr 18 2018, APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition. Institute of Electrical and Electronics Engineers Inc., p. 2530-2535 6 p. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; vol. 2018-March).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Pulse width modulation
Redundancy
Capacitors
Electric potential
Industry
9 Citations (Scopus)

A New Single-Phase Five-Level Inverter Topology for Single and Multiple Switches Fault Tolerance

Aly, M., Ahmed, E. M. & Shoyama, M., Nov 1 2018, In : IEEE Transactions on Power Electronics. 33, 11, p. 9198-9208 11 p., 8253839.

Research output: Contribution to journalArticle

Fault tolerance
Switches
Topology
Short circuit currents
Industrial applications

Characterization of Excimer-Laser Doping of a Poly-Si Thin Film with a Phosphoric-Acid Coating for Thin-Film-Transistor Fabrication

Imokawa, K., Tanaka, N., Suwa, A., Nakamura, D., Sadoh, T., Goto, T. & Ikenoue, H., Aug 15 2018, AM-FPD 2018 - 25th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, Proceedings. Institute of Electrical and Electronics Engineers Inc., 8437343. (AM-FPD 2018 - 25th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

phosphoric acid
Phosphoric acid
Excimer lasers
Thin film transistors
Polysilicon
Critical currents
critical current
filaments
conductors
Magnets

Current-Mode Digital Control Method for High Frequency DC-DC Converter with Reduced Number of Sampling in One Switching Cycle

Mishima, A., Takiguchi, R., Imaoka, J., Shoyama, M., Yamaguchi, A. & Kimura, T., Dec 3 2018, 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018. Institute of Electrical and Electronics Engineers Inc., p. 1423-1427 5 p. 8557393. (2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Digital Control
DC-DC Converter
DC-DC converters
Sampling
Cycle
1 Citation (Scopus)

Design Study of 2-MW Fully Superconducting Synchronous Motors

Fukuda, S., Yun, K., Iwakuma, M., Miura, S., Sato, S., Yoshida, K., Tomioka, A., Konno, M. & Izumi, T., Jun 1 2018, In : IEEE Transactions on Applied Superconductivity. 28, 4, 5207806.

Research output: Contribution to journalArticle

synchronous motors
Synchronous motors
tapes
Tapes
operating temperature
1 Citation (Scopus)

Detection of Slit Defects on Backside of Steel Plate Using Low-Frequency Eddy-Current Testing

Yoshimura, W., Tanaka, R., Sasayama, T. & Enpuku, K., Nov 1 2018, In : IEEE Transactions on Magnetics. 54, 11, 8405746.

Research output: Contribution to journalArticle

Eddy current testing
Steel
Defects
Eddy currents
Fluxes

Detection of slit defects on backside of steel plate using low-frequency eddy-current-testing

Yoshimura, W., Tanaka, R., Sasayama, T. & Enpuku, K., Oct 24 2018, 2018 IEEE International Magnetic Conference, INTERMAG 2018. Institute of Electrical and Electronics Engineers Inc., 8508192. (2018 IEEE International Magnetic Conference, INTERMAG 2018).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Eddy current testing
Steel
eddy currents
slits
steels
2 Citations (Scopus)

Development of Long-Length BMO-Doped REBCO Coated Conductors by Hot-Wall PLD Process

Fujita, S., Muto, S., Hirata, W., Adachi, Y., Yoshida, T., Igarashi, M., Kakimoto, K., Iijima, Y., Naoe, K., Kiss, T., Okada, T. & Awaji, S., Jun 1 2018, In : IEEE Transactions on Applied Superconductivity. 28, 4, 8253535.

Research output: Contribution to journalArticle

Ion beam assisted deposition
Pulsed laser deposition
pulsed laser deposition
conductors
Magnetization