Updated on 2024/05/22

写真a

 
KONDO, Keiichiro
 
Affiliation
Faculty of Science and Engineering, School of Advanced Science and Engineering
Job title
Professor
Profile
1991年3月早稲田大学理工学部電気工学科卒業
同年4月財団法人鉄道総合技術研究所入所
2007年1月千葉大学工学部(電子機械工学科)助教授
2015年4月千葉大学工学研究科(電気電子系コース)教授
2018年4月早稲田大学理工学術院(先進理工学部 電気・情報生命工学科)教授

Research Interests

  • electric vehicle

  • electric raiway

  • electric machinary

  • motor drive

  • power electronics

 

Misc

  • 鉄道車両駆動における蓄電装置応用技術

    近藤 圭一郎, 塚原 健太

    鉄道と電気技術   24 ( 10 ) 3 - 8  2013.09

    CiNii

  • A method for designing a high-power contactless power transformer considering reactive power

    Kohei Yamamoto, Takashi Maruyama, Keiichiro Kondo, Takayuki Kashiwagi

    IEEJ Transactions on Industry Applications   133 ( 3 ) 378 - 385  2013

     View Summary

    Problems in high-power contactless power transmission systems using series and parallel resonance capacitors arise from the maximum voltage limit of the series capacitor owing to high reactive power. In this study, the characteristics of reactive power are analyzed using an equivalent circuit and the contactless power transfer system is designed considering reactive power characteristics. The self-inductance and the frequency can determine the distribution of reactive power at the primary side and the secondary side. In addition, the optimal winding number and size of the coil and the appropriate frequency are investigated by electromagnetic field analysis. © 2013 The Institute of Electrical Engineers of Japan.

    DOI CiNii

  • An evaluation of power flow control of the power conversion circuit for contactless power transformer systems at the coil misalignment

    Satoshi Kitazawa, Keiichiro Kondo, Takayuki Kashiwagi

    IEEJ Transactions on Industry Applications   133 ( 5 ) 518 - 525  2013

     View Summary

    The coupling coefficient between the coils of a noncontact power supply system is reduced by coil misalignment. This reduces the output voltage and the active power in the coils. To cope with these problems, an instantaneous current control method is applied to a single-phase contactless power transformer system to apply the equivalent impedance of the PWM rectifier at the load side of the transformer. We propose a control method to supply power constantly to the load even when misalignment of the receiving coils occurs. The limit of the transferred power associated with the proposed control method is investigated. The proposed system, including the control method, is verified by experimental tests over a power range of several tens of watts. © 2013 The Institute of Electrical Engineers of Japan.

    DOI CiNii

  • Study on range of V/F characteristics change under the constant slip frequency condition for an induction motor

    白木 直樹, 近藤 圭一郎

    電気学会研究会資料. MD   2012 ( 45 ) 1 - 6  2012.11

    CiNii

  • Experimental study on a restarting procedure at coasting condition for a rotation angle sensorless PMSM

    堀江 拓也, 近藤 圭一郎

    電気学会研究会資料. MD   2012 ( 45 ) 65 - 70  2012.11

    CiNii

  • Stability analysis for the speed sensorless controlled induction motors using a linearization method in the load condition

    毎熊 泰樹, 近藤 圭一郎

    電気学会研究会資料. HCA   2012 ( 1 ) 1 - 6  2012.03

    CiNii

  • An analytical design method to reduce the rotation angle estimation error in driving inertial load with the PMSM sensorless control system

    今村 宏隆, 近藤 圭一郎

    電気学会研究会資料. HCA   2012 ( 1 ) 13 - 18  2012.03

    CiNii

  • Stability analysis for the speed sensorless controlled induction motors using a linearization method in the load condition

    毎熊 泰樹, 近藤 圭一郎

    電気学会研究会資料. MD   2012 ( 1 ) 1 - 6  2012.03

    CiNii

  • An analytical design method to reduce the rotation angle estimation error in driving inertial load with the PMSM sensorless control system

    今村 宏隆, 近藤 圭一郎

    電気学会研究会資料. MD   2012 ( 1 ) 13 - 18  2012.03

    CiNii

  • Study of Method for Designing the Power and the Capacitance of Fuel Cells and Electric Double-Layer Capacitors of Hybrid Railway Vehicle

    TAKIZAWA Kenji, KONDO Keiichiro

    IEEJ Transactions on Sensors and Micromachines   132 ( 2 ) 133 - 139  2012.02

     View Summary

    A hybrid railway traction system with fuel cells (FCs) and electric double layer-capacitors (EDLCs) is discussed in this paper. This system can save FC costs and absorb the regenerative energy. A method for designing FCs and EDLCs on the basis of the output power and capacitance, respectively, has not been reported, even though their design is one of the most important technical issues encountered in the design of hybrid railway vehicles. Such design method is presented along with a train load profile and an energy management strategy. The design results obtained using the proposed method are verified by performing numerical simulations of a running train. These results reveal that the proposed method for designing the EDLCs and FCs on the basis of the capacitance and power, respectively, and by using a method for controlling the EDLC voltage is sufficiently effective in designing efficient EDLCs and FCs of hybrid railway traction systems.

    DOI CiNii

  • An Analytical Design Method for a Regenerative Braking Control System for DC-electrified Railway Systems under Light Load Conditions

    SAITO Tatsuhito, KONDO Keiichiro, KOSEKI Takafumi

    IEEJ Transactions on Sensors and Micromachines   132 ( 2 ) 268 - 277  2012.02

     View Summary

    A DC-electrified railway system that is fed by diode rectifiers at a substation is unable to return the electric power to an AC grid. Accordingly, the braking cars have to restrict regenerative braking power when the power consumption of the powering cars is not sufficient. However, the characteristics of a DC-electrified railway system, including the powering cars, is not known, and a mathematical model for designing a controller has not been established yet. Hence, the object of this study is to obtain the mathematical model for an analytical design method of the regenerative braking control system. In the first part of this paper, the static characteristics of this system are presented to show the position of the equilibrium point. The linearization of this system at the equilibrium point is then performed to describe the dynamic characteristics of the system. An analytical design method is then proposed on the basis of these characteristics. The proposed design method is verified by experimental tests with a 1kW class miniature model, and numerical simulations.

    DOI CiNii

  • Evaluation of Design Method for Engine Output and Battery Capacity for Lithium Ion-Battery Hybrid Diesel Railway Vehicles

    SHIRAKI Naoki, KONDO Keiichiro

    IEEJ Transactions on Sensors and Micromachines   132 ( 2 ) 178 - 184  2012.02

     View Summary

    Diesel engine lithium-ion battery hybrid vehicles are gaining attention because the energy consumption during their operation and exhaust emission can be reduced considerably. However, designing a reasonably accurate method for the engine power and battery energy has not yet been proposed, though the above mentioned type of traction system can help in realizing an environment-friendly railway vehicle. In this paper, a design method for the battery capacity (energy) and engine output is proposed in the case of a control strategy in which the sum of the kinetic energy of the vehicle and the battery energy is maintained constant. The proposed method is verified by the velocity/state of charge of the battery charts obtained in the experimental tests. The proposed design method can be used to develop the environment-friendly railway traction systems for non electrified lines.

    DOI CiNii

  • Wheel-slip control method for seeking maximum value of tangential force between wheel and rail

    Keiichiro Kondo, Ikuo Yasuoka, Osamu Yamazaki, Shinichi Toda, Yosuke Nakazawa

    IEEJ Transactions on Industry Applications   132 ( 1 ) 101 - 108  2012

     View Summary

    A method for reducing motor torque in proportion to wheel slip is applied to an inverter-driven electric locomotive. The motor torque at wheel-slip speed is less than the torque at the maximum tangential force or the adhesion force. A novel anti-slip control method for seeking the maximum value of the tangential force between the wheel and rail is proposed in this paper. The characteristics of the proposed method are analyzed theoretically to design the torque reduction ratio and the rate of change of the pattern between the wheel-slip speed and motor current. In addition, experimental tests are also carried out to verify that the use of the proposed method increases the traction force of an electric locomotive driven by induction motors and inverters. The experimental test results obtained by using the proposed control method are compared with the experimental results obtained by using a conventional control method. The averaged operational current when using the proposed control method is 10% more than that when using the conventional control method. © 2012 The Institute of Electrical Engineers of Japan.

    DOI CiNii

  • 鉄道におけるメンテナンスと技術者の役割 : 車両を例に

    近藤 圭一郎

    JREA : 日本鉄道技術協会誌   54 ( 10 ) 36294 - 36296  2011.10

    CiNii

  • Analysis of Steady-state error of rotation angle estimation in driving inertial load by the PMSM sensorless control

    今村 宏隆, 近藤 圭一郎

    電気学会研究会資料. MD   2011 ( 22 ) 79 - 84  2011.06

    CiNii

  • Tecnological Overview of Electric Vehicle Traction

    KONDO Keiichiro

    計測と制御 = Journal of the Society of Instrument and Control Engineers   50 ( 3 ) 171 - 177  2011.03

    CiNii

  • Study on the reduction of the capacitance of the CD link capacitor by the phase lead compensation of the capacitor voltage in hybrid railway vehicle

    田代 貴大, 近藤 圭一郎

    電気学会研究会資料. HCA   2011 ( 1 ) 1 - 6  2011.03

    CiNii

  • Technological Overview of Electric Vehicle Traction

    KONDO Keiichiro

    自動車技術   65 ( 3 ) 19 - 25  2011.03

    CiNii

  • 産業応用部門長期ビジョンロードマップWGの活動

    近藤 圭一郎

    電気学会論文誌E(センサ・マイクロマシン部門誌)   131 ( 9 )  2011

    CiNii

  • Study on a simple method for controlling the engine output power of hybrid powered railway vehicles with electric double layer capacitors

    Shota Okano, Hiroyuki Shibuya, Keiichiro Kondo

    IEEJ Transactions on Industry Applications   131 ( 10 ) 1246 - 1253  2011

     View Summary

    This paper presents a simple and energy-saving method for controlling hybrid powered railway vehicles that run on rural non-electrified railway lines and have diesel engine and electrical double layer capacitors (EDLCs). The aim this study is to reduce both the fuel consumption and the capacitance of EDLCs. A basic idea proposed in this paper is that EDLCs supply and absorb the kinetic energy of the vehicle and the engine output compensates supply the energy loss with the vehicle running. Thus, the energy loss is not taken into consideration while expressing the EDLC voltage reference (equation 1)
    energy loss is considered when the engine is in operating mode. The proposed method is examined by performing numerical simulations for various values of engine operation time, load, and grade section. The results of this study reveal the relationship between the capacitance of the EDLCs and the fuel consumption. Using this proposed control methods, excessive charging of EDLCs can be avoided. The results of this study are expected to expedite the development of energy-saving railway vehicles for the non-electrified lines. Finally, the results of this study increase the possibility of developing hybrid powered railway vehicles. © 2011 The Institute of Electrical Engineers of Japan.

    DOI CiNii

  • A Study on Virtual Indirect Control Method of Single Phase/Three Phase Matrix Converters

    IINO Kazuyuki, FUKUMA Tooru, KONDO Keiichiro, SATO Yukihiko

    IEEJ Transactions on Sensors and Micromachines   130 ( 6 ) 793 - 801  2010.06

     View Summary

    In this paper, we study a control method based on the virtual indirect circuit method for a single phase to three phase matrix converter (MC). The MC has a capacitor at the input side to compensate for the single phase input power fluctuation. We propose a method to determine the amplitude of the compensation capacitor voltage on the basis of the load power. The method is validated using a 1350W class single phase to three phase matrix converter system. In addition, restrictions on the modulation ratio of the input current and the compensation capacitor current are revealed, showing the limit of the output voltage according to the load power.

    DOI CiNii

  • Linearization method for starting control of speed-sensorless vector-controlled induction motors

    Kazuki Fujinami, Keiichiro Kondo

    IEEJ Transactions on Industry Applications   130 ( 11 ) 1255 - 1263  2010

     View Summary

    A linearization method is proposed for controlling the start-up operation of a rotating induction motor. The dynamics of this motor are deteriorated when the starting operation is carried out at high frequencies. In this method, the characteristics of the method are analyzed to reveal that the aforementioned problem is caused by the low equivalent gain of the induced voltage during the rotor flux establishment. A method to compensate for the angle of the rotorflux-induced voltage vector is proposed to overcome this problem. The proposed method is experimentally verified by a test set, and the influence of changes in the rotor resistance is analyzed. © 2010 The Institute of Electrical Engineers of Japan.

    DOI CiNii

  • Trends in Variable Speed Drive Technology for AC Motors

    KONDO K

    Magnetics Japan   4 ( 7 ) 349 - 357  2009.07

    CiNii

  • Control Method for Harmonic Voltage Injection to Achieve Noise Reduction in Position-Sensorless Control of Permanent-Magnet Synchronous Motors at Low Speeds

    TANIGUCHI Shun, HOMMA Toshihiro, WAKAO Shinji, KONDO Keiichiro, YONEYAMA Takashi

    IEEJ Transactions on Sensors and Micromachines   129 ( 4 ) 382 - 388  2009.04

     View Summary

    In this study, we examine the relationship between harmonic voltage injection, acoustic noise, and position estimation performance in a PMSM when a position-sensorless control method involving harmonic voltage injection is used at low speeds. Further, we propose a novel control method for voltage injection; this method can be used to reduce acoustic noise in the motor. The proposed control method is verified by performing numerical simulations and carrying out experiments using a 4-pole, 2-kW, 2100-rpm IPMSM (interior permanent-magnet synchronous motor).

    DOI CiNii

  • Starting Procedure of Rotation Sensorless PMSM at Coasting Condition for Railway Vehicle Traction

    YAMAKAWA Toshifumi, WAKAO Shinji, KONDO Keiichiro, YONEYAMA Takashi, TANIGUCHI Shun, MOCHIDUKI Shinsuke

    IEEJ Transactions on Sensors and Micromachines   127 ( 7 ) 700 - 706  2007.07

     View Summary

    This paper investigates starting procedure of rotation sensorless PMSM at coasting condition for railway vehicle traction. To realize the restarting, the initial rotor position and speed at restart are needed. The existing estimation algorithm of the initial position and speed can't be applied to railway vehicle traction because of the higher speed range and the longer current period. We propose novel estimation method of the initial speed. The estimation method is verified experimentally to ensure that it is feasible enough to be applied to the railway vehicle traction system.

    DOI CiNii

  • A Multiobjective Optimal Design of a Hybrid Power Source System for a Railway Vehicle

    OGAWA Tomoyuki, WAKAO Shinji, KONDO Keiichiro

    IEEJ Transactions on Sensors and Micromachines   126 ( 12 ) 1690 - 1698  2006.12

     View Summary

    In this paper, we study an optimal design for a hybrid power source railway vehicle as an alternative to diesel railway vehicles. The hybrid power source railway vehicle is assumed to be composed of the fuel cell and the electric double layer capacitor. We apply the multiobjective optimization based on the genetic algorithm for the vehicle design, aiming at reduction of both initial cost and energy consumption. The pareto optimal solutions are obtained using the multiobjective optimization.<br>First we develop a simulation model of the hybrid power source railway vehicle and its electric power control methods. Next we derive the pareto optimal solutions as a result of the multiobjective optimization. Finally, we categorize the pareto optimal solutions to some groups, which enables us to elucidate characteristics of the pareto optimal solutions. Consequently, using the multiobjective optimization approach we effectively comprehend the problem characteristics and can obtain the plural valuable solutions.

    DOI CiNii

  • Experimental study on a voltage source inverter-fed induction motor traction system connected to fuel cell

    Takemasa Furuya, Keiichiro Kondo, Takamitsu Yamamoto

    IEEJ Transactions on Industry Applications   126 ( 1 ) 42 - 47  2006

     View Summary

    This paper describes the experimental results of a test to drive two induction motors through a VVVF inverter by 25 kW class proton membrane type fuel cells (PEMFCs). The experiments are aimed at verifying the compatibility between the drive system for the railway vehicle traction and PCs. This paper describes test results of powering, powering-off procedure, and simulated slip-readhesion control test, respectively. Through the experiments, we obtained useful knowledge required in designing the fuel cell drive system.

    DOI CiNii

  • A theoretical analysis of sideband harmonics on the inverter DC-link current for an electric railcar

    Tomoyuki Ogawa, Shinji Wakao, Jat Taufiq, Keiichiro Kondo, Nobuo Terauchi

    IEEJ Transactions on Industry Applications   126 ( 7 ) 1049 - 1057  2006

     View Summary

    The harmonics of the return current may interfere with the signaling current along with the rails. In this paper, we present the theoretical studies of the return current harmonics in the inverter-controlled DC electric railcar, aiming at contributing future work to improve the compatibility with the signaling current. We theoretically derive sideband harmonics of the DC-link current. Then, in order to verify the theoretical study, we experimentally measure the harmonics and numerically simulate the harmonics. As a result, we concluded the theoretical DC-link current is enough accurate to be utilized for the future improvement of the inverter harmonics current.

    DOI CiNii

  • Study on an Application of Induction Motor Speed Sensorless Vector Control to Railway Vehicle Traction

    Keiichiro Kondo, Kazuaki Yuki

    IEEJ Transactions on Industry Applications   125 ( 1 ) 1 - 8  2005.09

     View Summary

    The Pulse Generators or PGs are equipped to detect the rotor frequency of induction traction motors for the torque control in railway vehicle traction field. Eliminating PGs are preferable from the view points of increasing the reliability of the traction system, reduction of the both initial and maintenance cost and down-sizing induction traction motors. Expecting those merits, we have been studying to apply a sensor less control method to induction traction motor control. Prior to some reports of studies and tests to apply speed sensor-less strategy to railway vehicle traction, we lunched the ideas to apply the speed sensor-less control strategy and results of the studies and the tests. In this paper, we present the novel control method for railway vehicle traction and some results of theoretical study and tests.© 2005, The Institute of Electrical Engineers of Japan. All rights reserved.

    DOI CiNii

  • Development of Permanent Magnet Synchronous Motor Control System for the Traction Purpose of the Gauge Changing Train

    Keiichiro Kondo, Hiroshi Hata, Kazuaki Yuki, Katsunori Naganuma, Toshio Hasebe, Koichi Matsuoka

    IEEJ Transactions on Industry Applications   125 ( 4 ) 348 - 354  2005.09

     View Summary

    This paper is aimed at providing the designing method of a permanent magnet synchronous motor (PMSM) control system for the high-speed and the single-phase AC powered Gauge Changing Train (GCT). The state-of-the-art electrical motive unit is equipped with downsized direct drive type PMSMs for the simplified gauge changeable truck. Due to the feeding the AC single phase power, we propose a beat-less control for PMSMs. We verify the development results of designing procedures by the experimental results of operation on a high-speed test line in Colorado, USA.© 2005, The Institute of Electrical Engineers of Japan. All rights reserved.

    DOI CiNii

  • Rotor Design of Permanent Magnet Synchronous Motor for Railway Vehicle

    Minoru Kondo, Keiichiro Kondo, Yasushi Fujishima, Shinji Wakao

    IEEJ Transactions on Industry Applications   124 ( 1 ) 124 - 130  2004.09

     View Summary

    The permanent magnet synchronous motor (PMSM) is an efficient machine, which has found application over wide power and speed ranges. This paper presents the optimal rotor design of a PMSM for use on a railway vehicle. This design utilizes reluctance torque in order to develop higher torque at starting with low open circuit voltage at high speed. © 2004, The Institute of Electrical Engineers of Japan. All rights reserved.

    DOI CiNii

  • Study on the Constants of Permanent Magnet Synchronous Motor for Railway Vehicle Traction

    Keiichiro Kondo, Minoru Kondo

    IEEJ Transactions on Industry Applications   123 ( 4 ) 437 - 444  2003.09

     View Summary

    fire have been investigating to apply permanent magnet synchronous motors (PMSMs) to railway vehicle traction, because the efficiency of PMSMs are higher than that of induction motors and they are expecte to enable the traction motor down sized. We havc to consider pprculiarlty on the railway vehicle traction when we design the electrical constants of PMSMs On this paper, we point out the particular points which we have to take into account on designing works and analyze how the constants of PMSMs affect the their performance Through this study, we suggest how to desigri the constants and applied the method to assumed designing works to verify the method. We conclude that the suggested method is a~ailable for the designing of PMSMs' constants and reluctance torque is essential to the performance PMSMs for railway vehicle traction purpose. © 2003, The Institute of Electrical Engineers of Japan. All rights reserved.

    DOI CiNii

  • The 37th IEEE Industrial Applications Society Annual Meeting : IAS'02

    近藤 圭一郎

    電気学会論文誌. D, 産業応用部門誌 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society   123 ( 4 ) 477 - 477  2003.04

    CiNii

  • The Modeling of Lead-Acid Battery by Frequency-Response Characteristics

    Yusivar F, Haratsu H, Sato M, Wakao S, Kondo K, Matsuoka K, Kawamatsu T

    IEEJ Transactions on Fundamentals and Materials   122 ( 8 ) 715 - 721  2002

     View Summary

    As battery spread more widely in recent years, we have to model its transient response precisely to grasp the whole characteristic of power source system in designing, for example, the efficient driving system of electric vehicle(EV). Up to this time, many methods are presented for battery modeling, but it is still difficult to obtain the exact characteristics of battery by them. In this paper, with this background, we propose a novel method to model the transient response of battery in view of the control engineering. In the proposed method, we measure the frequency-response of battery and introduce the concept of transfer function to decide the admittance value of battery. Finally we estimate the equivalent circuit of battery from the obtained admittance value. We also investigate the variation of circuit-constant values with the battery residual capacity.

    DOI CiNii

  • Stability Analysis of Permanent Magnet Synchronous Motor Traction Main Circuit with Regenerative Braking on Insufficient Load's Power Consuming

    Fen Yusivar, Kenji Uchida, Takahiro Kihara, Shinji Wakao, Keiichiro Kondo, Koichi Matsuoka

    IEEJ Transactions on Industry Applications   121 ( 6 ) 651 - 657  2001

     View Summary

    The regenerative braking method has been employed in DC-fed electric railway vehicle traction system in order to reduce energy consumption. The load's power consuming is sometimes insufficient for the regenerated power, and it causes the input voltage of traction inverter rises. In such a case, the regenerative current is regulated to prevent the over voltage. However, in applying this regulation, especially to the permanent magnet synchronous motors (PMSM) traction system, a continuous oscillation of regenerative current is sometimes observed. Unfortunately, It deteriorates passengers' riding comfortability due to torque fluctuation. On this paper, we analyze the phenomena of the oscillation of regenerative currents and suggest an anti-oscillation regenerative current regulation method based on the analyzing results. The detail is as follows. (1) We construct a nonlinear time-varying model, which consists of the substation, power feeding system and the main traction circuit onboard and divide the nonlinear time-varying model into four linear time-invariant systems. (2) Through the analysis with the models, we make it clear that the continuouso scillationis caused by the traditional regenerative braking control method (3) Based on the analysis we suggest a novel anti-oscillation regenerative braking control method, whose effectiveness is proved through experiments. © 2001, The Institute of Electrical Engineers of Japan. All rights reserved.

    DOI CiNii

  • 鉄道における省エネルギー技術

    近藤 圭一郎, 平栗 滋人

    JREA   42 ( 6 ) 26220 - 26223  1999.06

    CiNii

  • Stability Analysis of Permanent Magnet Synchronous Motor Drive System for Railway Vehicle Traction Under the DC Line Voltage Fluctuation

    Keiichiro Kondo, Koichi Matsuoka, Michihiro Yamashita, Takeshi Tsuchiya

    IEEJ Transactions on Industry Applications   119 ( 7 ) 950 - 957  1999

     View Summary

    DC electrified railway line voltage at pantograph often changes according to load condition of other electric vehicles. Vehicle propulsion system is disturbed by this line voltage change. For practical use it must be made clear how the permanent magnet synchronous motor control system for railway traction behaves at line voltage change. In this paper we try to analyze our proposed PMSM control system behavior under sudden change of DC line voltage through pole arrangement and numerical simulation and obtain technical knowledge under this phenomenon. © 1999, The Institute of Electrical Engineers of Japan. All rights reserved.

    DOI CiNii

  • Torque feed-back control for salient pole permanent magnet synchronous motor at weakening flux control range

    Keiichirou Kondo, Kouichi Matsuoka, Yousuke Nakazawa, Hideyuki Shimizu

    IEEJ Transactions on Industry Applications   119 ( 10 ) 1155 - 1164  1999

     View Summary

    At high speed range in voltage source inverter (VSI) fed permanent magnet synchronous motor gap flux is weakened to limit terminal voltage for saving the capacity of VSI. In weakening flux operation of salient pole PMSM, d-axis current and qaxis current can't be decided deductively due to reluctance torque. To cope with this problem wepropose feedback control of motor torque, which is calculated from current, voltage and motor speed. By this control method torque and terminal voltage can be determined without measuring them directly. In this paper, the proposed control system is discribed, the transient characteristic is studied and the test results. Lastly we show make it clear that our method is basically effective for railway vehicle traction. © 1999, The Institute of Electrical Engineers of Japan. All rights reserved.

    DOI CiNii

  • ベクトル制御

    近藤 圭一郎

    鉄道と電気技術   9 ( 10 ) 85 - 85  1998.10

    CiNii

  • A Designing Method in Current Control System of Permanent Magnet Synchronous Motor for Railway Vehicle Traction

    Keiichiro Kondo, Koichi Matsuoka, Yousuke Nakazawa

    IEEJ Transactions on Industry Applications   118 ( 42559 ) 900 - 907  1998

     View Summary

    We have been studying the aplication of permanent magnet synchronous motor (PMSM) for railway vehicle traction in order to reduce the weight and size of direct drive traction motor. As a part of this study establishing a current control system of PMSM suitable for railway vehicle traction should be investigated. In this paper we discuss about designing method of current control system mentioned above and suggest a method which is available under the condition of railway vehicle traction, low switching frequency and long digital calculating period. Next we investigate how to decide current response time constant Td and reach a conclusion that it is about 10ms is appropriate under some assumed condition. Then we checked this current control system for railway vehicle traction through experiments and studies of influence of parameter changing. Consequently we can recognize the current control system has satisfactory performance for railway vehicle traction. © 1998, The Institute of Electrical Engineers of Japan. All rights reserved.

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  • パワーエレクトロニクスの応用と保守(14) -車上機器への応用-

    近藤 圭一郎

    鉄道と電気技術   8 ( 4 ) 92 - 96  1997.04

    CiNii

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Sub-affiliation

  • Faculty of Science and Engineering   Graduate School of Advanced Science and Engineering

Research Institute

  • 2022
    -
    2024

    Waseda Research Institute for Science and Engineering   Concurrent Researcher

  • 2022
    -
    2024

    Waseda Center for a Carbon Neutral Society   Concurrent Researcher

  • 2019
    -
    2023

    Railway System Technical Research Institute   Director of Research Institute

Internal Special Research Projects

  • 高効率電動機の高速領域におけるトルク制御性能向上の研究

    2018  

     View Summary

    埋込磁石形永久磁石同期電動機(IPMSM)を,インバータ出力電圧振幅に制限が生じ,位相角のみが制御可能な1パルスモードで制御する際の,トルク制御系の設計法を明らかとした。まず,本方式の特徴を明らかにすべく,既存のトルクフィードバック制御方法の制御特性を,最近のIPMSMの弱め磁束制御方法との比較を行った結果,制御量であるトルクを直接的にフィードバックする点で,本方式には優位線があることがわかった。 以上の方式について,フィードフォーワード項も踏まえ,1kWクラスIPMSMモデルで実験を行ったところ,今回の検討条件では,時定数8msまでの応答が実現できた。なおこの結果の一部は国際会議ECCE2019に投稿中である。