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Start Over Author "Hisao Fukumoto" Journal ieej transactions on fundamentals and materials
16 results on '"Hisao Fukumoto"'

6. Development of Analyzing System for Power Factor and Harmonic Direction in Electric Power Distribution System using FA Computer

Author

Hisao Fukumoto, Daiki Yoshida, and Tatsuya Furukawa

Subjects
010302 applied physics, Physics, Electric power distribution, business.industry, 020209 energy, Electrical engineering, 02 engineering and technology, Power factor, 01 natural sciences, Harmonics, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Harmonic, Development (differential geometry), Electrical and Electronic Engineering, business
Published
2017

7. Feasibility Study on Resin Molded Type Voltage-current Sensor Built in Pole Switch for Measurement of Power Status in Electric Power Distribution System

Author

Tatsuya Furukawa, Kohei Kubo, Kentaro Takeuchi, Daiki Yoshida, and Hisao Fukumoto

Subjects
010302 applied physics, Materials science, 020208 electrical & electronic engineering, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, 02 engineering and technology, Electrical and Electronic Engineering, 01 natural sciences
Published
2017

8. Development of an HTML5 based Educational Support System on Electrical Machinery

Author

Hisao Fukumoto, Masashi Ohchi, Hideaki Itoh, Tatsuya Furukawa, and Makoto Ishibashi

Subjects
Engineering, HTML5, Development (topology), Educational support, Remote experiment, business.industry, Systems engineering, Electrical and Electronic Engineering, business, Simulation, Electrical machinery
Published
2015

11. Numerical Electric Field Analysis of Power Status Sensor Observing Power Distribution System Taking into Account Voltage Divider Measurement Circuit

Author

Hiroshi Wakuya, Masashi Ohchi, Tatsuya Furukawa, Takuro Kubo, Hisao Fukumoto, and Hideaki Itoh

Subjects
Materials science, Electrical load, Switched-mode power supply, business.industry, Voltage divider, Electrical engineering, Power factor, Single-phase electric power, Electrical and Electronic Engineering, Voltage optimisation, business, Voltage, Constant power circuit
Published
2011

12. Introduction of New Motion Measurement Equipment into Virtual Walk System

Author

Toshiyuki Hori, Masashi Ohchi, Hisao Fukumoto, Hiroshi Wakuya, Hideaki Itoh, and Tatsuya Furukawa

Subjects
Cave automatic virtual environment, Human–computer interaction, Computer science, Virtual space, Electrical and Electronic Engineering, Computer-mediated reality, Virtual reality, Motion measurement
Published
2011

14. Design and Implementation of Flexible Web BBS for Class Communication Support System

Author

Masashi Ohchi, Nobuhiro Nakashima, Tatsuya Furukawa, and Hisao Fukumoto

Subjects
Rest (physics), Ajax, Class (computer programming), medicine.medical_specialty, Computer science, World Wide Web, Web system, Web design, medicine, Support system, Electrical and Electronic Engineering, computer, Web modeling, computer.programming_language
Published
2010

15. Experimental Proof of Voltage-Current Waveform Sensor Output of Resin Molded Type for Measurement of Power Factor and Harmonics in General Power Distribution System

Author

Hisao Fukumoto, Shinya Yoshino, Masahito Hirakawa, Asashi Ohchi, and Tatsuya Furukawa

Subjects
Engineering, business.industry, Electrical engineering, Energy Engineering and Power Technology, Power factor, Line (electrical engineering), Finite element method, Power (physics), Harmonics, Electronic engineering, Waveform, Current sensor, Electrical and Electronic Engineering, business, Voltage
Abstract

We have proposed a voltage-current sensor of resin molded type for measurement of the power factor and harmonics. To understand the characteristics of the conventional prototype sensor and the problems of its practical use, we conducted a finite element analysis. Problems involving the cost and practical usage of the sensor were identified. Therefore, we have redesigned the prototype sensor, incorporating the current sensor designed on the basis of the FEM and a ready-made voltage sensor. In this paper, we describe feasibility field experiments with the present sensor in a practical 6.6-kV distribution system and show that the sensor can measure the power factor and harmonics of horizontal and vertical power line systems successfully. © 2011 Wiley Periodicals, Inc. Electr Eng Jpn, 178(3): 1–10, 2012; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.21213

Published
2009

16. 分布誘電率推定のための長間隔測定電極を用いた静電容量計測における円弧形補助電極の影響

Author

Satoshi Nagamachi, Masashi Ohchi, Tatsuya Furukawa, and Hisao Fukumoto

Subjects
Materials science, Physics::Instrumentation and Detectors, business.industry, System of measurement, Analytical chemistry, Relative permittivity, Capacitance, Arc (geometry), Optics, Physics::Plasma Physics, Position (vector), Shield, Permittivity distribution, Electrode, Electrical and Electronic Engineering, business
Abstract

We have investigated a measurement system for permittivity distribution based on the measured capacitance using a pair of long distance small size electrodes with the shield and arc additional electrodes. However, the estimation of the permittivity distribution has not been established yet. In the paper, we carried out experiments and numerical analyses in order to verify the effect of size and position of the arc additional electrode and discussed the effect of measured capacitance on the arc additional electrode.

Published
2009

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