Essays about: "Harmonic loads"

Showing result 1 - 5 of 9 essays containing the words Harmonic loads.

1. 1. Harmonic Emissions in Microgrids

   University essay from Lunds universitet/Industriell elektroteknik och automation

   Author : Lejla Alibegovic; Emelie Freiland Paulsson; [2021]
   Keywords : Harmonics; microgrid; local energy system; NEPLAN; Technology and Engineering;

   Abstract : “Affordable and clean energy” is EUs 7th Sustainable Development Goal and includes an increase of renewable energy generation in the global energy mix. A lot of the responsibility falls on the energy sector to transform and obtain solutions for a more sustainable future. READ MORE

3. 2. Soil-Structure Interaction Analysis of Portal Frame Railway Bridges : Numerical Analysis of Two Case Study Bridges

   University essay from KTH/Bro- och stålbyggnad

   Author : Nils Sandqvist; Marko Milicevic; [2020]
   Keywords : Soil-structure Interaction; Portal Frame Bridge; Dynamic Analysis; Perfectly Matched Layer; Train Passage Analysis; Railway Bridge; High Speed Train v;

   Abstract : This thesis concerns dynamic Soil-Structure Interaction (SSI) analysis of portal framerailway bridges. Dynamic problems are common for bridges used for high speedrailway traffic. The passing trains induce harmonic loads on the bridges causingvibration amplitudes that may cause damage to the bridge structures and userdiscomfort. READ MORE

4. 3. Evaluation of power quality and common design concept for AC-DC converters in aircraft

   University essay from

   Author : Andreas Brolund; [2017]
   Keywords : AC-DC; converter; aircraft; power electronics; MOSFET; MEA; More electric aircraft; Delta-switch; ATRU; Auto-transformer rectifier unit; Auto-transformer; Vienna rectifier; passive rectifier; active rectifier; power factor correction; APFC; PFC; MATLAB; Simulink; THD; total harmonic distortion;

   Abstract : This master thesis has been carried out in collaboration with Saab, Avionics Systems in Jönköping, Sweden, during the spring of 2017. The thesis investigates unidirectional rectifier topologies in aircraft and the focus has been on evaluating the power quality requirements according to the aircraft standards, in the course of the More Electric Aircraft concept. READ MORE

5. 4. Harmonics propagation and impact of Electric Vehicles on the electrical grid

   University essay from KTH/Elektrisk energiomvandling

   Author : Kevin Lorenzo; [2014]
   Keywords : ;

   Abstract : This thesis addresses the issues of (inter)harmonics propagation on electrical grids. More specifically it concerns two different kinds of studies. The first one is the harmonic impact of the integration of new technologies such as Electric Vehicle charging parks which generate harmonic voltages. READ MORE

6. 5. Vibration Analyses of a Wooden Floor-Wall Structure- Experimental and Finite Element Studies

   University essay from Lunds universitet/Byggnadsmekanik

   Author : Joel Ejenstam; Ola Flodén; [2011]
   Keywords : Technology and Engineering;

   Abstract : Changes in the Swedish construction code introduced in 1994 enabled the construction of wooden multistorey buildings. This resulted in an increased need for knowledge about wooden structures in the building industry. The main issue in wooden framed buildings is disturbing vibrations and noise which propagate throughout the construction. READ MORE