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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| EMD | 2018-10-05 15:35 |
Tokyo | Fuji Electric (TOKYO: Osaki East Tower 23F) | Relationship Between Brush Surface Roughness and Brush Wear Associated With Change in Silver Content of Silver Graphite Brush Naoki Fukuda, Yusuke Takada, Ryuta Higa, Koichiro Sawa, Takahiro Ueno (NIT)  EMD2018-40 |
Brush enables the transfer of electrical current between stationary and moving conductors. There are many operational ca... [more] | EMD2018-40 pp.19-24 |
| EMD | 2018-06-15 14:40 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Fluctuation Components of Contact Voltage at AgPd Brush and Au-plated Slip-ring System with Llubricant Koichiro Sawa, Tomoharu Ohtuka, Yoshitada Watanabe, Takahiro Ueno (NIT), Hiroyasu Masubuchi (SERVO) EMD2018-10 |
The contact voltage drop is one of principal parameters to evaluate the performance of a slip-ring and brush sliding sys... [more] | EMD2018-10 pp.13-18 |
| EMD | 2018-06-15 15:05 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Effect of circuit conditions on various characteristics such as molten metal bridge and arc discharge of auxiliary contact for electromagnetic contactor Kiyoshi Yoshida, Koichiro Sawa (NIT), Kenji Suzuki (Fuji Electric FA Components & Systems) EMD2018-11 |
We have carried out an open and close operation experiments to evaluate the contact reliability of the auxiliary contact... [more] | EMD2018-11 pp.19-23 |
| EMD | 2018-05-18 13:05 |
Hokkaido | Muroran Institute of Technology | A Wear Model of Commutator and Brush Taking Account of Arc Erosion for DC Moto Driving Automotive Fuel Pump Koichiro Sawa, Yoshitada Watanabe, Takahiro Ueno (NIT) EMD2018-1 |
A carbon flat commutator and carbon brush are widely used in a DC motor driving an automotive fuel pump. The authors hav... [more] | EMD2018-1 pp.1-6 |
| EMD | 2018-05-18 13:30 |
Hokkaido | Muroran Institute of Technology | Influence of Magnetic Flux Density and Breaking Velocity and Source Voltage on Magnetic Blow-out Behavior of DC High Voltage Arc Kiyoshi Yoshida, Koichiro Sawa (NIT), Kenji Suzuki (Fuji Electric FA Components & Systems) EMD2018-2 |
Recently, the applications for make and break DC power supply circuits such as solar power generation and electric vehic... [more] | EMD2018-2 pp.7-12 |
| CPM, ED, EID, SDM, ICD, MRIS, QIT, SCE, OME, EMD (Joint) [detail] |
2018-03-08 15:15 |
Shizuoka | Degradation Phenomenon of Electrical Contacts by using a Micro-Sliding Mechanism
-- The comparison with input waveforms concerning of minimal sliding amplitudes under some conditions 4 -- Keiji Koshida, Shin-ichi Wada (TMC), Koichiro Sawa (NIT) EMD2017-75 MR2017-46 SCE2017-46 EID2017-48 ED2017-120 CPM2017-140 SDM2017-120 ICD2017-125 OME2017-69 |
Authors have studied degradation phenomena on electrical contacts under oscillations. In addition, they have developed a... [more] | EMD2017-75 MR2017-46 SCE2017-46 EID2017-48 ED2017-120 CPM2017-140 SDM2017-120 ICD2017-125 OME2017-69 pp.15-20 |
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| EMD | 2018-03-02 13:05 |
Saitama | Nippon Institute of Technology | Influence of Sealed Gases and Pressure on Arc Duration of Electromagnetic Contactor Ryoya Kaneko, Hiroki Funada, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2017-57 |
A electromagnetic contactor with magnets to shut off DC circuit was set in the chamber. The enclosed gases are hydrogen,... [more] | EMD2017-57 pp.1-4 |
| EMD | 2018-03-02 13:20 |
Saitama | Nippon Institute of Technology | An experiment on reliability of Auxiliary Contacts in Electromagnetic Contactor Sora Ishiwa, Kazuki Takahashi, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2017-58 |
We have carried out an open and close operation experiments to evaluate the contact reliability of the auxiliary contact... [more] | EMD2017-58 pp.5-8 |
| EMD | 2018-03-02 13:35 |
Saitama | Nippon Institute of Technology | Influence of Magnetic Flux Density on Blow-out Behavior of DC High Voltage Arc Tsubasa Umezawa, Toshiya Morita, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2017-59 |
Solar power generation and electric vehicles (EV) that use high current with high DC voltage are increasing. The role o... [more] | EMD2017-59 pp.9-12 |
| EMD | 2018-03-02 13:50 |
Saitama | Nippon Institute of Technology | Automatic Measurements and Battery Switching of Solar Generation System Shunya Okado, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2017-60 |
In the previous report, automatic charge and discharge measurement of lithium ion battery using photovoltaic power gener... [more] | EMD2017-60 pp.13-16 |
| EMD | 2018-03-02 15:40 |
Saitama | Nippon Institute of Technology | Brush Wear Characteristic in Sliding Contact of Au Coated Slip Ring and Ag Graphite Brush Kotaro Kasahara, Kazuya Seino, Naoki Fukuda, Koichiro Sawa, Takahiro Ueno (NIT) EMD2017-66 |
A sliding contact allows the transfer of electrical current between stationary and moving part. It’s used in collector r... [more] | EMD2017-66 pp.41-44 |
| EMD | 2018-03-02 16:20 |
Saitama | Nippon Institute of Technology | Characteristics of molybdenum disulfide under Low speed sliding Contacts Shunya Aragaki, Tomoharu Otsuka, Yoshitada Watanabe, Koichiro Sawa, Takahiro Ueno (NIT) EMD2017-68 |
Electric sliding contacts are a major research subject relating to small power electric motors, electric railways and ar... [more] | EMD2017-68 pp.49-52 |
| EMD | 2018-03-02 16:35 |
Saitama | Nippon Institute of Technology | Wear characteristics of various brush materials at high speed rotation of DC motor Fuya Machida, Shuya Yoshida, Koichiro Sawa, Takahiro Ueno (NIT) EMD2017-69 |
DC motors with brush and commutator are widely used in automobiles and other applications. Due to advances in technology... [more] | EMD2017-69 pp.53-56 |
| EMD | 2018-03-02 16:50 |
Saitama | Nippon Institute of Technology | Wear・and erosion of brush and commutator in fuel pump drive DC motor Ryohei Sekimoto, Kento Ohata, Koichiro Sawa, Takahiro Ueno (NIT) EMD2017-70 |
Small DC motors are used for driving fuel pumps used in automobiles due to their superior cost advantages. As its struct... [more] | EMD2017-70 pp.57-61 |
| EMD | 2017-11-17 10:30 |
Tokyo | The University of Electro-Communications | A Method for Evaluating Degradation Phenomenon of Electrical Contacts using a Micro-Sliding Mechanism
-- Minimal Sliding Amplitudes against Input Waveforms (3) -- Shin-ichi Wada, Keiji Koshida (TMC), Koichiro Sawa (Nippon Inst. of Tech.) EMD2017-44 |
The authors obtaine experimental results on the minimal sliding amplitude (MSA) required to make resistances fluctuate o... [more] | EMD2017-44 pp.7-12 |
| EMD | 2017-11-17 11:10 |
Tokyo | The University of Electro-Communications | Effect of arc discharge types on various characteristics and mass change in electrodes for electromagnetic contractor Kiyoshi Yoshida, Koichiro Sawa (Nippon Inst. of Tech.), Kenji Suzuki, Koetsu Takaya (Fuji Electric FA) EMD2017-45 |
Experiments were carried out at several voltages to clarify the influence of the voltage on various characteristics, i.e... [more] | EMD2017-45 pp.13-19 |
| EMD | 2017-11-17 14:50 |
Tokyo | The University of Electro-Communications | Effects of Lubricant oil on sliding contact phenomena in carbon brush-slip ring system Yuki Amada, Koichiro Sawa, Takahiro Ueno (Nippon Inst. of Tech.) EMD2017-50 |
Sliding contact systems are widely used as a method of exchanging electrical power and/or signal between static and movi... [more] | EMD2017-50 pp.43-46 |
| EMD | 2017-10-20 15:35 |
Yamanashi | Kofu-shi-Shoukoukaigisyo (Kofu） | Characteristics of Contact Voltage at Au-plated Slip-ring and AgPd Brush System with Lubricant Koichiro Sawa, Tomoharu Ohtuka, Yoshitada Watanabe, Takahiro Ueno (NIT), Hiroyasu Masubuchi (SERVO) EMD2017-41 |
[more] | EMD2017-41 pp.19-24 |
| EMD | 2017-10-20 16:00 |
Yamanashi | Kofu-shi-Shoukoukaigisyo (Kofu） | Mechanical Wear and Arc Erosion of Brush and Commutator in DC Motor for Automotive Fuel Pump Koichiro Sawa, Yoshitada Watanabe, Takahiro Ueno (NIT) EMD2017-42 |
[more] | EMD2017-42 pp.25-30 |
| EMD | 2017-05-19 14:30 |
Hokkaido | Chitose Arcadia Plaza | Various characteristics of the electromagnetic contactor when continuously make and break at below minimum arc voltage Kiyoshi Yoshida, Koichiro Sawa (NIT), Kenji Suzuki, Koetsu Takaya (Fuji Electric FA) EMD2017-2 |
The electromagnetic contactor with two pairs of Ag and Ni alloy contacts was used in this experiment,. The source volta... [more] | EMD2017-2 pp.7-11 |
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