Faculty Profiles - OHTSUKA Shinya

Papers - OHTSUKA Shinya

Division display1 - 20 of about 237／ All the affair displays >>

Requirements for ultra-high frequency partial discharge monitoring systems for gas-insulated switchgear Reviewed International journal

Koltunowicz W., Behrmann G., Boltze M., Caprara A., Coapes G., Cook F., Hama H., Huecker T., Johnstone C., Neuhold S., Neumann C., Ohtsuka S., Penning J.F., Riechert U., Rokunohe T., Schichler U., Soeller M., Yasouka T.

Elektrotechnik und Informationstechnik 140 ( 1 ) 153 - 161 2023.02

Simultaneous Measurement System of Differential Mode and Common Mode Currents without Influence for Radiated EMI in Three-Phase Variable Speed Drive System Reviewed

Odera F., Bandi T., Ohtsuka S.

Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC 2543 - 2550 2024.01

Difference in Differential and Common Mode Currents of Output and Input Cables in Three-Phase Variable Speed Drive System for Evaluating Radiated EMI Reviewed International journal

Bandi T., Odera F., Ohtsuka S.

Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC 2537 - 2542 2024.01

Change in Electric Power Consumption in Mongolia in 2020 and the Impact of the COVID-19 Pandemic Reviewed International journal

Tsolmon Myagmarjav, Tuvshinbayar Bandi, Bat-Erdene Bayar, Shinya Ohtsuka

Journal of Energy Transition 1 ( 1 ) 1 - 6 2023.12

鉱油中PD 電流波形の超広帯域計測–脱気状態と極性効果の相違– Reviewed

大塚信也,　福崎稔,　芝田拓樹

電気学会論文誌B ( 電気学会 ) 142 ( 11 ) 2022.11

Changes in Electric Power Demands of Mongolian and Japanese Local Areas in 2020 and Discussion on Seasonal Electricity Usage Based on the Temperature Dependence Reviewed International journal

Myagmarjav T., Bandi T., Bayar B.E., Ohtsuka S.

2022 9th International Conference on Condition Monitoring and Diagnosis, CMD 2022 355 - 359 2022.11

Rise Time Characteristics on the Order of Picoseconds of Negative PD Current Pulses in SF<inf>6</inf>Gas and Mineral Oil and Impact of PD-Emitted em Waves on the 5G Frequency Band Reviewed International journal

Ohtsuka S., Yamauchi T., Shibata H.

2022 9th International Conference on Condition Monitoring and Diagnosis, CMD 2022 154 - 158 2022.11

Radiated Noise Properties from Inverter Unit Considering Antenna Height Dependency and Reflection Effects in Semi-Anechoic Chamber Reviewed International journal

Odera F., Bandi T., Kinoshita S., Ohtsuka S.

2022 International Conference on Electrical Machines and Systems, ICEMS 2022 2022.11

Partial Discharge Current and Electromagnetic Wave Properties in Gas Mixtures of Electronegative Gas and Natural-origin Gases: Study on Applicability of UHF Method Reviewed International journal

Shintake M., Mastuoka T., Inami K., Hama H., Nakadai Y., Ohtsuka S.

2022 9th International Conference on Condition Monitoring and Diagnosis, CMD 2022 644 - 648 2022.11

Influence of Mixing Ratio Change of SF6 Alternative Gas Mixtures Considering Synergy Effect of Critical Electric Field Strength Reviewed International journal

Ohtsuka S., Matsuoka T., Shintake M., Inami K., Hama H., Nakadai Y.

2022 9th International Conference on Condition Monitoring and Diagnosis, CMD 2022 202 - 206 2022.11

Identification of Gas Compartment Existing PD in a Series Three Phase-Type GIS Considering Propagation Properties of PD-Emitted Electromagnetic Wave by FDTD Analysis Reviewed International journal

Taketomi Y., Fujimoto T., Ohtsuka S., Shikura T.

2022 9th International Conference on Condition Monitoring and Diagnosis, CMD 2022 640 - 643 2022.11

Detection Properties of Partial Discharge-emitted Electromagnetic Waves in Silicone Gels during the Electric Trees Development to Breakdown Reviewed International journal

Kinoshita S., Oishi Y., Ohtsuka S.

2022 9th International Conference on Condition Monitoring and Diagnosis, CMD 2022 662 - 665 2022.11

Comparison of PD Current Waveforms between Aged and New Insulation Oils and Oil Types by Super-Wideband Measurement Reviewed

Shibata Hiroki, Fukuzaki Minoru, Matsumoto Takuya, Ohtsuka Shinya

IEEJ Transactions on Power and Energy ( The Institute of Electrical Engineers of Japan ) 142 ( 10 ) 482 - 489 2022.11

Authorship：Last author,　Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)

Liquid insulators such as mineral oil and silicone oil have excellent cooling and insulation performance, but impurities, dissolved gases and/or moisture in the liquid are known to have a significant influence on insulation performance. So far, the authors have shown that partial discharge (PD) current waveforms in mineral oil differ significantly depending on degassing treatment condition and on positive and negative polarity by super high frequency-wideband measurement. In this paper, using aged mineral oil which was used in a distribution transformer over 48 years, difference in PD current waveforms between new and aged mineral oil and between mineral and silicone oils as difference in insulation oil type were investigated by the super high frequency-wideband measurement system, so-called “SHF_PDPW system” with a 33GHz oscilloscope. In addition, PD-emitted electromagnetic (EM) waves in those oils were measured with an antenna with sensitivity in the UHF band, and differences in the polarity and relationship between PD current and PD-emitted EM waves were investigated from the viewpoint of applicability of the UHF method.

DOI： 10.1541/ieejpes.142.482

Scopus

CiNii Research

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85140402910&origin=inward

超広帯域計測による経年絶縁油と新油及び油種類によるPD 電流波形の比較 Reviewed

芝田拓樹,　福崎稔,　松本卓也,　大塚信也

電気学会論文誌B ( 電気学会 ) 142 ( 10 ) 2022.10

Super High Frequency Wideband Measurement of Partial Discharge Current Waveform in Mineral Oil Reviewed International journal

Ohtsuka Shinya, Fukuzaki Minoru, Shibata Hiroki

IEEJ Transactions on Power and Energy ( The Institute of Electrical Engineers of Japan ) 142 ( 11 ) 561 - 567 2022.01

Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)

Liquid insulators have excellent cooling and insulation performance, but impurities and contaminants in the liquid or dissolved gases and moisture are known to have a significant influence on insulation performance. In this paper, using the Super High Frequency-wideband Partial Discharge (PD) current Pulse Waveform measurement system, “SHF_PDPW system”, that the authors have developed and applied to PD measurement in SF6 gas so far, PD current waveforms in mineral oil were investigated in detail. Differences in PD current waveforms due to degassing treatment condition of the mineral oil and polarity effect of applied voltage could be clearly clarified. These differences cannot be observed by ordinary oscilloscopes with analog bandwidths around 1GHz, and are important findings to understand PD phenomena, which were first observed by the super-wideband measurements.

DOI： 10.1541/ieejpes.142.561

Scopus

CiNii Research

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85141847093&origin=inward

Fundamental Study on Reflection Property of Radiated Noise against Ground Floor in Semi-Anechoic Chamber for EMC Test of Inverter Reviewed International journal

Bandi T., Odera F., Kinoshita S., Ohtsuka S.

2022 International Conference on Electrical Machines and Systems, ICEMS 2022 2022.01

Influence of SF6 gas mixture ratio in SF6/Dry air mixtures on detection properties of PD-emitted electromagnetic wave with UHF and VHF band antennas Reviewed International journal

Takumi Matsuoka, Shinya. Ohtsuka, Kiyoshi. Inami, Hiroyuki. Hama , Youji. Nakadai

22th International symposium on High Voltage Engineering (ISH2021) 2021 ( 15 ) 1472 - 1476 2021.11

Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

ONLINE ONLINE 2021.11.22 - 2021.11.25

DOI： 10.1049/icp.2022.0139

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85174650665&origin=inward

Propagation propaties of PD-emitted electromagunetic wave in three phase encapusulated GIS with series arrangement and relation between defect position and sensor output Reviewed International journal

Tatsuki Fujimoto, Shinya Ohtsuka, Tatsuyuki Shikura

22th International symposium on High Voltage Engineering (ISH2021) ( IET Conference Proceedings ) 2021 ( 15 ) 530 - 535 2021.11

Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

ONLINE ONLINE 2021.11.22 - 2021.11.25

DOI： 10.1049/icp.2022.0054

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85174644365&origin=inward

Application of Microstrip Filter for Multiple Narrow Band Antenna to Detection of Partial Discharge Reviewed International journal

Bandi T., Ohtsuka S

22th International symposium on High Voltage Engineering (ISH2021) ( IET Conference Proceedings ) 2021 ( 15 ) 1361 - 1365 2021.11

Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

ONLINE ONLINE 2021.11.22 - 2021.11.25

DOI： 10.1049/icp.2022.0130

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85174655432&origin=inward

Detection of Discharge-emitted Electromagnetic Wave Leaked from Inside the Microwave Oven Reviewed

Ohtsuka Shinya, Kohara Hiroki, Furuie Hiroki

IEEJ Transactions on Industry Applications ( The Institute of Electrical Engineers of Japan ) 141 ( 9 ) 674 - 682 2021.09

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

Microwave ovens (MOs) are commonly used for cooking and heating food; it uses microwaves with frequency in the 2.4GHz band, which is one of the ISM band. However, discharge could occur inside the MO due to the formation of the high electric field by the microwaves when the tableware made of metal or decorated by metal paint, or when aluminum foil is placed inside a MO under operation. In addition, if there is food residue or food that generates flammable gas, the discharge may trigger severe ignition or combustion. Therefore, the discharge signal should be detected during the MO operation to avoid fires or accidents caused by the discharge. From this safety viewpoint, this paper described the detection properties of discharge-emitted electromagnetic (EM) waves leaked from inside the MO by using a Horn antenna placed outside the MO with a low pass filter (LPF) for eliminating the leaked microwaves. The light emission properties of the discharge, including ignition and combustion during the MO operation, were also investigated along with the discharge-emitted EM waves. As a result, it was confirmed that the discharge-emitted EM waves can be detected with the first light emission in all the tests by using the antenna with the LPF.

DOI： 10.1541/ieejias.141.674

Scopus

CiNii Article

CiNii Research

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85114441527&origin=inward

　PREV- NEXT 　

<OHTSUKA Shinya>

Papers - OHTSUKA Shinya