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Roberto Akira Yamachita
Researcher at Universidade Federal de Itajubá
Publications - 8
Citations - 101
Roberto Akira Yamachita is an academic researcher from Universidade Federal de Itajubá. The author has contributed to research in topics: Preventive maintenance & Induction motor. The author has an hindex of 5, co-authored 8 publications receiving 78 citations.
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Journal ArticleDOI
The impact on electricity demand and emissions due to the introduction of electric cars in the São Paulo Power System
Marcos Vinícius Xavier Dias,Jamil Haddad,Luiz Augusto Horta Nogueira,Edson C. Bortoni,Ricardo Alexandre Passos da Cruz,Roberto Akira Yamachita,José Luiz Gonçalves +6 more
TL;DR: In this article, a comparative analysis of forecasting scenarios until 2035 for various inputs of electric cars in the whole state fleet is presented, aiming to verify the susceptibility of the model suggested, upon the introduction of electric vehicles, taking into account also the electrical and environmental impacts related to it.
Journal ArticleDOI
A Review of Telemetry Data Transmission in Unconventional Petroleum Environments Focused on Information Density and Reliability
Ivamberg Navarro de Almeida,Pedro Duarte Antunes,Felipe Orlando Centeno Gonzalez,Roberto Akira Yamachita,Andreas Nascimento,José Luiz Gonçalves +5 more
TL;DR: The paper addresses a literature review of the technologies used in the transmission of measuring and logging data during well drilling and presents a discussion about efficiency in data density transmission and reliability, especially when it comes to software and automated tools.
Journal ArticleDOI
Assessment of the achieved savings from induction motors energy efficiency labeling in Brazil
Ed.C. Bortoni,Luiz Augusto Horta Nogueira,Rafael Balbino Cardoso,Jamil Haddad,E.P. Souza,M.V.X. Dias,Roberto Akira Yamachita +6 more
TL;DR: In this article, the authors present a model to estimate the amount of savings obtained with the usage of the PROCEL endorsement labels in standard and in energy efficient motors, and the estimated peak demand reduction is also inferred.
Journal ArticleDOI
Analysis of Repairs on Three-Phase Squirrel-Cage Induction Motors Performance
TL;DR: In this paper, the effects of preventive maintenance and repairs on three-phase squirrel-cage induction motor performance regarding energy efficiency were evaluated in an industrial and repair shop setting, and the results brought interesting insights on how simple tasks can improve the energy efficiency.
Proceedings ArticleDOI
Decision Making On Generator for Wind Turbines Using the AHP Methodology
TL;DR: AHP decision making tool was employed to solve the problem of concerns related to which electrical machine must be used, need of speed amplifiers, maintenance and other important issues has been on the increase.