研究者詳細 - 松嶋　徹

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IoT機器を接続する有線通信の電磁的両立性（EMC）

松嶋徹

産業応用工学会全国大会講演論文集 ( 一般社団法人産業応用工学会 ) 2019 ( 0 ) 1 - 1 2019年09月

記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）

さまざまなモノがインターネットに接続されるIoT 時代において，無線通信だけでなく有線通信も重要な技術の一つである。たとえば，自動車を考えてみても，自動運転やADAS の普及により，車載Ethernet などの高速通信技術の開発が進んでいる。一方，EV/HEV の普及により車内の電磁ノイズ環境は一層厳しいものになっている。車載通信はこれらの電磁妨害波がある環境においても十分に高い信頼性を実現しなければならない。
本講演では，上記のような複数のシステム間の電磁的干渉（EMC）に関して，事例を踏まえて紹介する。特に，特徴的な電磁ノイズがディジタル通信にどのように影響するかを説明し，干渉低減法を紹介する。

DOI： 10.12792/iiae2019.001

電力線通信の長距離化に向けた電力ケーブルの透過特性測定

小原総一郎, 小林史和, 押川和正, 脇坂俊幸, 松嶋徹, 福本幸弘

産業応用工学会全国大会講演論文集 ( 一般社団法人産業応用工学会 ) 2019 ( 0 ) 41 - 41 2019年09月

記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）

現在，500mを超える長距離区間で電力線通信(PLC)を使うケースが増えている。そのため電力線ケーブルの高周波透過特性を調べることが必要である。本報告ではVVFケーブルとEEFケーブルの透過特性を測定した。全帯域を使える長さはVVFケーブルでは0.3 kmであるが，EEFケーブルでは1.5k mである。よって長距離通信ではEEFケーブルを用いることが望ましい。今後は他のケーブルも測定することでより良い透過特性を持つケーブルの検証を実施する。

DOI： 10.12792/iiae2019.022

Peer-to-Peer Energy Transfer by Power Gyrators Based on Time-Variable-Transformer Concept 査読有り

Kiss D., Hisakado T., Matsushima T., Wada O.

IEEE Transactions on Power Electronics 34 ( 8 ) 8230 - 8240 2019年08月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 1986-2012 IEEE. A control strategy based on matching the source and load changes of the order of milliseconds, called peer-to-peer energy transfer, is introduced. This energy transfer enables a decoupled energy transfer system in common bus networks. To realize the transfer with a pair of two-port circuits, a power gyrator is derived from the phasor-based model of a bidirectional ac/dc converter, based on the concept of a time-variable transformer. Power-gyrator timing synchronization is achieved by communication, and a peer-to-peer energy transfer system is developed. Experimental and simulation results are compared, and it is demonstrated that peer-to-peer energy transfer can be used for decoupling common bus voltage networks.

DOI： 10.1109/TPEL.2018.2882129

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Design for reduction of far-end crosstalk in four-channel differential transmission line using per-unit-length parameters 査読有り

Matsushima T., Hisakado T., Wada O., Matsuda A., Hirano T.

2019 Joint International Symposium on Electromagnetic Compatibility, Sapporo and Asia-Pacific International Symposium on Electromagnetic Compatibility, EMC Sapporo/APEMC 2019 808 - 811 2019年06月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

© 2019 The Institute of Electronics, Information and Communication Engineer. Modal analysis of a multi-channel differential transmission line is discussed for estimation of far-end crosstalk. A simple formula to evaluate the far-end crosstalk was derived using eigenmode and mixed mode S parameter. The accuracy of the proposed formula was verified by comparison with a full wave simulation. The far-end crosstalk of test four-channel differential lines was calculated by the derived formula. These results were in good agreement with that obtained by full-wave simulation. In addition, position of the differential transmission line with low crosstalk was determined using the proposed method.

DOI： 10.23919/EMCTokyo.2019.8893837

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Calculation of Electromagnetic Field Radiated from Power Line Communication of Three Wires System 査読有り

Yamamoto T., Okumura H., Wakisaka T., Matsushima T., Kuwabara N., Fukumoto Y.

2019 Joint International Symposium on Electromagnetic Compatibility, Sapporo and Asia-Pacific International Symposium on Electromagnetic Compatibility, EMC Sapporo/APEMC 2019 704 - 707 2019年06月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

© 2019 The Institute of Electronics, Information and Communication Engineer. Electromagnetic field radiated from Power Line Communication (PLC) which was applied to three wires system was examined with Method of Moments (MoM). The influence of the wire configuration and the terminating condition of the third wire was also evaluated. Calculated common mode current and electromagnetic field intensity agreed well with measured results. The calculation results showed that electromagnetic field intensity decreased or didn't change from two wires system when the third wire was connected to the ground.

DOI： 10.23919/EMCTokyo.2019.8893771

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非対称スイッチング電源回路に対するインピーダンスバランス法によるコモンモードノイズ低減査読有り

西本太樹, 山岡正拓, 山田徹, 松嶋徹, 和田修己

電子情報通信学会論文誌B J102-B ( 3 ) 184 - 193 2019年03月

帯域制限されたDSSS/CCK/OFDM変調に対する狭帯域干渉波の周波数の違いを考慮したPER推定と最適方式選択査読有り

高谷和宏, 奥川雄一郎, 富田大將, 梅田康希, 松嶋徹, 小川将克, 久門尚史, 和田修己

電子情報通信学会論文誌 B J102-B ( 3 ) 2019年03月

Experimental study of the relationship between maximum common mode current and maximum magnetic field strength using a simple power distribution line model 査読有り

Okumura Hiroyuki, Matsushima Tohlu, Kuwabara Nobuo, Yamamoto Takeshi, Wakisaka Toshiyuki, Fukumoto Yuki

IEICE Communications Express ( 一般社団法人電子情報通信学会 ) 8 ( 5 ) 178 - 183 2019年03月

記述言語：英語掲載種別：研究論文（学術雑誌）

The relation between maximum common mode current and maximum radiated magnetic field strength was experimentally studied using a simple power distribution line model. The common mode current was measured along the cable and the radiated magnetic field strength was measured around the model. They were evaluated using the S21 parameter. The frequency characteristic of both the maximum current and the maximum strength showed a closely similar pattern. Our evaluation of their correlation indicated that the relation between the maximum common mode current and the maximum radiated magnetic field strength could be represented by a straight line, and that 80% of the measured data was contained within 2 dB of the regression line.

DOI： 10.1587/comex.2019XBL0004

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妨害波パラメータに対するEthernet通信のパケットエラーレートの変化

石橋健太, 松嶋徹, 福本幸弘

エレクトロニクス実装学術講演大会講演論文集 ( 一般社団法人エレクトロニクス実装学会 ) 33 ( 0 ) 12C2 - 4 2019年03月

記述言語：英語掲載種別：研究論文（研究会，シンポジウム資料等）

近年,自動運転技術などの発達により,車載通信の大容量化が求められている.この要求に対して,通信容量が比較的大きいEthernetを車載用途に転用する動きがある. Ethernetはオフィスや家庭で使用されてきたため,車載用途と比較して信頼性要求は高くない.そこで本研究では,信頼性の評価方法を定めるため,Ethernetが弱点とする妨害波のパラメータを探ることを目的とした.そのために,妨害波として差動のパルス電圧を通信中のEthernetケーブルに対して印加し,その妨害波のパラメータとパケットエラーレートの相関を調査した.この論文ではその結果を報告する.

DOI： 10.11486/ejisso.33.0_12C2-04

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モーメント法を用いた高周波電流測定用ロゴスキーコイルの設計

押川和正, 桑原伸夫, 福本幸弘, 松嶋徹, 脇坂俊幸

エレクトロニクス実装学術講演大会講演論文集 ( 一般社団法人エレクトロニクス実装学会 ) 33 ( 0 ) 11D3 - 2 2019年03月

記述言語：英語掲載種別：研究論文（研究会，シンポジウム資料等）

PLCなど電力線上の高周波電流を測定する際、低周波電流による磁気飽和をしないロゴスキーコイルを用いる必要がある。本論文では、モーメント法を用いた電磁界解析プログラムであるNEC2によるシミュレーションにより伝達インピーダンスを求め、所望の高周波電流を測定できるロゴスキーコイルを設計した。設計したロゴスキーコイルを作製・評価し、電力線上のPLC信号の電流測定を行った。

DOI： 10.11486/ejisso.33.0_11D3-02

その他リンク： https://ci.nii.ac.jp/naid/130008121708

九州工業大学工学部電気電子学科福本・松嶋研究室

福本幸弘, 松嶋徹

エレクトロニクス実装学会誌 ( 一般社団法人エレクトロニクス実装学会 ) 22 ( 7 ) 622 - 622 2019年01月

Equivalent-circuit model with retarded electromagnetic coupling for meta-atoms of wired metallic spheres 査読有り

Ohishi K., Hisakado T., Matsushima T., Wada O.

IEICE Transactions on Electronics ( 一般社団法人電子情報通信学会 ) E101C ( 12 ) 923 - 930 2018年12月

記述言語：英語掲載種別：研究論文（学術雑誌）

Copyright © 2018 The Institute of Electronics, Information and Communication Engineers. This paper describes the equivalent-circuit model of a metamaterial composed of conducting spheres and wires. This model involves electromagnetic coupling between the conductors, with retardation. The lumped-parameter equivalent circuit, which imports retardation to the electromagnetic coupling, is developed in this paper from Maxwell’s equation. Using the equivalent-circuit model, we clarify the relationship between the retardation and radiation loss; we theoretically demonstrate that the electromagnetic retardation in the near-field represents the radiation loss of the meta-atom in the far-field. Furthermore, this paper focuses on the retarded electromagnetic coupling between two meta-atoms; we estimate the changes in the resonant frequencies and the losses due to the distance between the two coupled meta-atoms. It is established that the dependence characteristics are significantly affected by electromagnetic retardation.

DOI： 10.1587/transele.E101.C.923

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Formulation of single-conductor transmission line model with feedback electric fields by terminal discontinuity 査読有り

Tashiro D., Hisakado T., Matsushima T., Wada O.

Asia-Pacific Microwave Conference Proceedings, APMC 2018-November 642 - 644 2018年11月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

© 2018 IEICE In this paper, we propose a single-conductor transmission line model with external excitation. It is expressed basically as the wave equation for the variables of linear charge densities and currents, but added by an excitation term of external electric fields. We theoretically derive electric fields generated by terminal discontinuity and incorporate them into the proposed equation as feedback. The model is tested against Method of Moments (MoM) and we confirmed its validity.

DOI： 10.23919/APMC.2018.8617551

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Topological estimation of resonant frequencies by equivalent circuit for star meta-atoms 査読有り

Hasegawa A., Hisakado T., Matsushima T., Wada O.

Asia-Pacific Microwave Conference Proceedings, APMC 2018-November 201 - 203 2018年11月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

© 2018 IEICE We describe a topological approach for the analysis of meta-atoms. We focus on the star structure of wired metallic spheres and represent the dynamics by the equivalent circuit model in which the incident matrix of the circuit corresponds to the topology of wires. We show that all the resonant frequencies of the structures are approximately found by the graph Laplacian of the wire structures.

DOI： 10.23919/APMC.2018.8617226

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Modal analysis of reflection of TDR in overhead distribution lines 査読有り

Matsushima T., Hisakado T., Wada O., Oe S., Sasaoka T.

2018 IEEE International Symposium on Electromagnetic Compatibility and 2018 IEEE Asia-Pacific Symposium on Electromagnetic Compatibility, EMC/APEMC 2018 523 - 526 2018年06月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

© 2018 IEEE. Detection of a fault point in an overhead distribution system is necessary for accident restoration in power grid. Applying a pulse wave to the overhead distribution line and measurement of reflection wave, which is called TDR measurement with utility-pole-interval resolution, can detect distance to the fault point. In this report, an overhead distribution line is treated as a three-conductor transmission line with earth ground. Eigen modes in the transmission line are derived by inductances and capacitance matrices calculated by electrostatic or magnetostatic simulator. In addition, a fundamental matrix of an equivalent circuit model of a fault point is expressed by impedances and admittances. The fundamental matrix is converted to a modal S parameter. Reflection coefficient with mode conversion of disconnection fault case is calculated using derived S parameter. The calculated reflection coefficients are in good agreement with calculation results using a circuit simulator. As a results, considering mode conversion in the TDR method can detect type of fault in the overhead distribution lines.

DOI： 10.1109/ISEMC.2018.8393833

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Validation of prediction method of common-mode current reduction based on imbalance difference model for differential transmission line placed near edge of adjacent ground plane 査読有り

Matsushima T., Watanabe T., Toyota Y., Koga L., Wada O.

Journal of Japan Institute of Electronics Packaging ( 一般社団法人エレクトロニクス実装学会 ) 21 ( 2 ) 178 - 185 2018年01月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

The electric asymmetry of a pair of differential transmission lines placed near an adjacent ground edge causes unwanted electromagnetic radiation when the adjacent ground width changes. In this paper, the imbalance difference model which has been proposed by the authors is verified by experiment and fullwave simulation for asymmetric differential transmission lines at different distances from the adjacent ground edge. The difference in secondary-common mode current in terms of the distance from the ground edge coincides with an error of up to 3 dB among the imbalance difference model, measurement, and electromagnetic simulation. Therefore the imbalance difference model has sufficient accuracy for practical use in designing differential transmission lines which produce less undesired emissions.

DOI： 10.5104/jiep.21.178

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RF immunity test of CAN FD Transceivers during Data-Frame Communication

Kawanishi K., Matsushima T., Hisakado T., Wada O.

IEEE Electromagnetic Compatibility Magazine 7 ( 1 ) 51 - 55 2018年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2012 IEEE. Designing electronic devices in consideration of EMC is very important, especially in the case of using the devices in cars. Because of this, standards for evaluating the EMC of bus transceivers equipped in cars are focused on. The authors are currently researching CAN FD transceivers and carried out an RF immunity test by using the DPI method to investigate the reason for CAN FD communication errors. In a test on the CAN bus, the maximum variation in differential voltage was 1 V, although the common mode voltage on the CAN bus was 40 V. Therefore, the CAN FD could communicate with the other one. In a test on power-supply terminals, an error was observed just after the change in bitrate in the middle of a CAN FD data-frame. It is shown that the short bit time was the reason for the error.

DOI： 10.1109/MEMC.0.8339543

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Trends of EMC standards for automotive network devices and communication quality of ethernet in relation to parameters of pulse disturbances

Matsushima S., Matsushima T., Hisakado T., Wada O.

IEEE Electromagnetic Compatibility Magazine 7 ( 1 ) 46 - 50 2018年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2012 IEEE. Recently, a series of EMC standards for bus transceiver ICs, IEC 62228, which focuses on automotive applications, has been greatly attracting attention. In particular, the importance of immunity characteristics is increasing to ensure safety and reliability. In this article, the latest trends for IEC 62228 series are introduced; particularly, automotive Ethernet is focused on among automotive network devices, and the importance of using pulse disturbance in immunity testing for Ethernet is considered. The influence of pulse disturbance on the communication quality of 100BASE-TX was evaluated experimentally, and the relationship between the threshold level of Ethernet and pulse disturbance affecting communication quality was revealed when the amplitude and width of pulse disturbance were changed. In particular, disturbance with a pulse width of about the same as 1-bit time degraded communication quality the most.

DOI： 10.1109/MEMC.0.8339542

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架空配電系統の線間に対する電柱間距離の分解能をもつTDR測定査読有り

Oe S., Sasaoka T., Matsushima T., Hisakado T., Wada O.

IEEJ Transactions on Power and Energy ( 一般社団法人電気学会 ) 138 ( 9 ) 766 - 771 2018年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2018 The Institute of Electrical Engineers of Japan. It is necessary to detect a fault point in overhead distribution system for failure restoration. To search the fault point effectively and precisely, we apply TDR (Time Domain Reflectometry) measurement with utility-pole-distance resolution. In this method, we inject a pulse wave into distribution lines and measure the reflection. In this paper, the authors confirm propagation characteristics of overhead distribution system and compare the measurement of the reflected wave with the simulation result. Through the experiments, the authors confirm an influence of parasitic capacitances in overhead distribution facilities such as a transformer and a switchgear. When distribution facility is not connected with distribution line, the reflected wave from every utility pole and the end terminal are observed; the reflected waves from every utility pole are caused by parasitic capacitors between the distribution lines and cross arms. When distribution facility such as a transformer and a switchgear is connected with distribution line, the reflected waves caused by these facilities are observed. As a result, we confirmed that parasitic capacitances of distribution facilities affect the propagation characteristics of distribution failure pulse wave. In addition, the authors developed a simulation tool to evaluate the propagation characteristics of the pulse wave in the overhead distribution system based on the result utilizing the test distribution system, and confirmed that the simulation results corresponded to the measurement results.

DOI： 10.1541/ieejpes.138.766