Search for dissertations about: "Power Quality"

Showing result 21 - 25 of 780 swedish dissertations containing the words Power Quality.

2. 21. Made in Canada : The strategies, spaces and working lives of independent designers in the Canadian fashion system

   Author : Taylor Brydges; Dominic Power; Brian Hracs; Johan Jansson; Susanne Reimer; Uppsala universitet; []
   Keywords : fashion; labour; creative industries; Canada; Filosofi; Philosophy;

   Abstract : Drawing on 87 interviews with independent fashion designers and key informants, this thesis is a collection of papers which aim to explore the strategies, spatial dynamics and working lives of independent fashion designers in the Canadian fashion industry. The majority of fashion design firms in Canada are small independent businesses, typically run by an individual or pair of designers, with few employees. READ MORE

4. 22. Vector control of static series compensator for mitigation of voltage dips

   Author : Hilmy Awad; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; power electronics; static series compensator; vector control; power quality; energy storage; voltage dips; custom power;

   Abstract : .... READ MORE

5. 23. Power control strategies for renewable energy systems : The inverter's role in future power systems

   Author : Sara Anttila; Cecilia Boström; Sandra Eriksson; Lena Max; Uppsala universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Renewable energy systems; Grid-connection; Inverter; Power control; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

   Abstract : Connecting more non-dispatchable renewable energy sources (RESs) will result in a higher power variability and a lower system inertia when the synchronous generators are replaced by inverter-connected RES. Inverter control can be divided in three categories: grid-following, grid-forming (GFM) and grid-supporting. READ MORE

6. 24. Modeling of Wind Turbines for Power System Studies

   Author : Tomas Petru; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flicker; fault response; power quality; wind turbine; power system stability; measurements; prediction; verification; grid simulation; modeling;

   Abstract : The power quality impact of wind turbines on the electric grid and the response of the wind turbines to faults in the electric grid are investigated in this thesis. A detailed model of a stall-regulated, fixed-speed wind turbine system capable of predicting the flicker impact on the connected grid is presented and compared with field measurements. READ MORE

7. 25. Frequency response by wind farms in power systems with high wind power penetration

   Author : Mattias Persson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; inertia estimation; frequency control; power system stability; wind power integration; Power system; synthetic inertia;

   Abstract : The integration of variable speed wind turbines (VSWT) in power systems is increasing in order to reduce the emission of green house gases. This increase of power electronic converter interfaced generation causes a decrease of power system inertia, increasing the risk of load shedding and system frequency instability. READ MORE