Teruo Takagi

Chubu Electric Power (Japan)

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The control of dual series power supplies for piezo driven SPM stage with long travel and atomic resolution

精密工学会大会学術講演会講演論文集 (2000)

P Rerkkumsup Teruo Takagi M Aketagawa Kohei Takada Y Naoi

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Output Power Leveling of Wind Turbine Generator by Pitch Angle Control Using <i>H</i><sub>∞</sub> Control

IEEJ Transactions on Power and Energy (2007)

Ryosei Sakamoto Tomonobu Senjyu Toshiaki Kaneko Naomitsu Urasaki Teruo Takagi

Effective utilization of renewable energies such as wind energy is expected instead of the fossil fuel. Wind energy is not constant and windmill output is proportional to the cube of wind speed, which cause fluctuating power of wind turbine generator (WTG). In order to reduce the fluctuating power of WTG, this paper presents a output power leveling technique of WTG by pitch angle control using H∞ control. H∞ control is required to consider the measurement deviation and modeling error. The simulation results with using actual detailed model for WTG show the effectiveness of the proposed method.

Windmill

Pitch angle

10.1541/ieejpes.127.86

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Citations (30)

Effect of Offshoot Branch Connected Rotary Machines on Line Selection Protection Relay

IEEJ Transactions on Power and Energy (2004)

Suresh Verma Shigeaki Ogawa Teruo Takagi Masayuki Kirita Tooru Katagiri

The purpose of this paper is to study an effect of offshoot branch connected rotary machines on a line selection protection relay. The motivation for this study stems from the fact that in a real power system with offshoot branch containing rotary machines like synchronous generators and induction motors, a case of mal-tripping of a line selection relay was observed. The main cause of this mal-tripping was thorough investigated through digital simulation followed by experimental verification carried out by connecting a real time simulator to the real world relay. It is found that the mal-operation of the relay was triggered by the combined dynamic characteristics of the rotary machines like synchronous generators and induction motors. Hence, the main result of this paper is that in case of a power system with an offshoot branch containing induction motors in addition to generators, it is very important to consider their combined dynamic characteristics in true sense, which hitherto has been more or less limited to generators only while conducting such relay settings/studies.

Tripping

Line (geometry)

Digital protective relay

10.1541/ieejpes.124.1481

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Citations (2)

Malignant Pleural Effusion

Springer eBooks (2016)

N Miyazawa K. Yokoi Noriho Kamiya Teruo Takagi

10.1007/978-3-662-46875-3_101429

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Development of a Prototype Model and Digital Simulation Model of STATCOM

Performance Evaluation (2003)

Yoshiki Nakachi Teruo Takagi Shigeyuki Sugimoto Hitoshi Teramoto Hirokazu Chishaki

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Output Power Leveling of Wind Turbine Generator by Pitch Angle Control Using H/sub /spl infin// Control

IEEE PES Power Systems Conference and Exposition (2006)

Ryosei Sakamoto Tomonobu Senjyu Toshiaki Kaneko Naomitsu Urasaki Teruo Takagi

Effective utilization of renewable energies such as wind energy is expected instead of the fossil fuels. Wind energy is not constant and windmill output is proportional to the cube of wind speed, which causes fluctuating power of wind turbine generator (WTG). In order to reduce the fluctuating power of WTG, this paper presents an output power leveling technique of WTG by pitch angle control using H _infin control, and the control input of WTG linear model is separated from the disturbance. The simulation results using actual detailed model for WTG show the effectiveness of the proposed method

Windmill

Pitch angle

10.1109/psce.2006.296239

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Citations (27)

Development of a Hybrid Simulator for Power System Analysis for a High Penetration of Distributed Generations

Electrical Engineering in Japan (2016)

Ryouhei Kitagawa Teruo Takagi K. Yokoi Kimihiko Shimomura Atsushi Harada

SUMMARY Chubu Electric Power Co., Ltd.’s hybrid power system simulator consists of analog models and hybrid models. The power system facilities are downsized as an analog model, while the synchronous generators and the loads are modeled as an actual current source model through the amplifier and the digital model. In recent years, there is a growing interest in analyzing power system dynamic phenomena caused by a high penetration of distributed generations. Therefore, the multifunctional generator model that can simulate distributed generation has been developed.

Penetration (warfare)

Distributed power

10.1002/eej.22900

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Citations (0)

An Optimal Scheduling in an Automated Warehouse System Controlled by a Process Computer

IFAC Proceedings Volumes (1975)

Nobuhiro Hamada Masaichiro Kawano Teruo Takagi

10.1016/s1474-6670(17)67532-3

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Development of a Hybrid Simulator for Power System Analysis for a High Penetration of Distributed Generations

IEEJ Transactions on Power and Energy (2015)

Ryouhei Kitagawa Teruo Takagi K. Yokoi Kimihiko Shimomura Atsushi Harada

CEPCO's hybrid power system simulator consists of analogue models and hybrid models. The power system facilities are downsized as an analogue model, while the synchronous generators and the loads are modeled as an actual current source model through the amplifier and the digital model. In recent years, there is a growing interest in analyzing power system dynamic phenomena caused by a high penetration of distributed generations. Therefore, the multifunctional generator model which can simulate distributed generation has been developed.

Penetration (warfare)

Distributed power

10.1541/ieejpes.136.63

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Citations (0)

Output power leveling of wind turbine generator by pitch angle control using H_∞ control

Electrical Engineering in Japan (2007)

Ryosei Sakamoto Tomonobu Senjyu Toshiaki Kaneko Naomitsu Urasaki Teruo Takagi

Abstract Effective utilization of renewable energies such as wind energy is expected instead of the fossil fuels. Wind energy is not constant and windmill output is proportional to the cube of wind speed, which causes fluctuating power of wind turbine generator (WTG). In order to reduce the fluctuating power of WTG, this paper presents an output power leveling technique of WTG by pitch angle control using H ∞ control, and the control input of WTG linear model is separated from the disturbance. The simulation results using actual detailed model for WTG show the effectiveness of the proposed method. © 2007 Wiley Periodicals, Inc. Electr Eng Jpn, 162(4): 17–24, 2008; Published online in Wiley InterScience ( www.interscience. wiley.com ). DOI 10.1002/eej.20657

Windmill

Pitch angle

10.1002/eej.20657

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Citations (21)