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Showing result 1 - 5 of 43 essays matching the above criteria.

1. 1. Tribological characterization of a ball bearing subjected to an electric field : Electric drivetrain tribology

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Muhammad Umar Farooq; [2023]
   Keywords : Ball bearing; electric drivetrain; tribology; electric field; characterization; bearing currents; discharge;

   Abstract : Electric machines are widely used in for instance the automotive industry in electric vehicles and in wind turbines. The electrical machines have mechanical bearings as an integral part used to transmit power and load. In addition, the main function includes reducing friction between interacting surfaces. READ MORE

3. 2. Predicting Breakdowns in Transportation Vehicles using Supervised Learning

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Shuo Li; [2023]
   Keywords : Breakdown Prediction; Transportation Vehicles; Diagnose; Gradient Boosting Classifier; Ensemble Model; Förutsägelse av haveri; transportfordon; diagnos; Gradient Boosting Classifier; Ensemblemodell;

   Abstract : Vehicle breakdowns can lead to fatal accidents, increase costs and reduce productivity. Therefore, robust and accurate fault diagnosis and prediction systems are critical to ensure the proper operation of vehicles. Many researchers have used machine learning for the prediction of vehicle breakdowns. READ MORE

4. 3. Control of distributed energy storage and EVs in building communities

   University essay from Högskolan Dalarna/Institutionen för information och teknik

   Author : Kweku Zigga; Usman Nasir; [2023]
   Keywords : Distributed energy storage systems DESS ; Electric Vehicles EVS ; Non coordinated control approach; Top-down control approaches; Bottom-up control approach; Renewable energy;

   Abstract : This study delves into the comparative operational effectiveness of non-coordinated, bottom-up, and top-down coordinated control models within Distributed Energy Storage Systems (DESS) and Electric Vehicle (EV) networks. Employing meticulous data analysis, this research evaluates power demand and supply dynamics within the infrastructure and buildings, aiming to optimize energy usage and storage. READ MORE

5. 4. Strategies for regional deployment of hydrogen infrastructure : The case of North Rhine-Westphalia, Germany

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Roberto Di Molfetta; [2022]
   Keywords : Hydrogen; Infrastructure rollout; Supply chain pathways; Mobility; Hydrogen buses.;

   Abstract : In response to the growing urge towards decarbonisation, more and more initiatives have been set to reduce and/or compensate the level of CO2 (carbon dioxide) emitted by human activities, which is one of the main responsible of the incumbent threats of “global warming” and “climate change”. “Climate neutrality by 2050” has become a decisive topic for political agendas worldwide and, against that background, the hydrogen economy can play a significant role. READ MORE

6. 5. Micro- / Meso- Scale Dielectric Strength Testing of Fibre Composites

   University essay from Umeå universitet/Institutionen för fysik

   Author : Johannes Fernberg; [2022]
   Keywords : Dielectric strength; composite; GFRP; glassfibre; composite microstructure; FEA; electric breakdown; single fibre;

   Abstract : Glass fibre composites are common materials used in high voltage applications as insulating materials that provide good structural integrity. The aim of this thesis is to develop a method of studying the failure in such materials by measuring the dielectric strength on micro- and meso- scale samples, consisting of single fibre filaments and fibre bundles respectively embedded in epoxy resin. READ MORE