Essays about: "Övertoner"

Showing result 11 - 15 of 31 essays containing the word Övertoner.

1. 11. Pulsed Laser Beam Quality Assessment via Phase Retrieval

   University essay from Lunds universitet/Atomfysik

   Author : Mattias Ammitzböll; [2021]
   Keywords : GSA; phase retrieval; Gerchberg-Saxton; femtosecond; pulsed; laser; beam quality; attosecond; interferometry; Physics and Astronomy;

   Abstract : In the search for a better understanding of the fundamental nature of the atom, the development of femtosecond pulsed laser sources has opened up for many applications, in particular in time-resolved physics. For many of those, like the generation of attosecond pulses through high-order harmonic generation, high intensity is needed and the quality of the beam is a critical factor. READ MORE

3. 12. The Effect of Harmonics on the Electrical Grid due to Electric Vehicle Chargers

   University essay from Uppsala universitet/Institutionen för elektroteknik

   Author : Ingemar Solander Araúz; [2020]
   Keywords : Examensarbete Elektroteknik; elnät; övertoner; elbilsladdare; transformator förluster; Bachelor thesis electrical engineering; harmonics; electrical grid; electric car charger; transformer loss;

   Abstract : In this thesis the effect of harmonics on the electrical grid from electric car chargers, specifically the effect on distribution transformers, is analyzed. The study was performed on the electrical grid of two areas provided by the electrical company Dala Energi. READ MORE

4. 13. Condition monitoring of induction machines using a signal injection technique

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

   Author : Sathiya Lingam Senthil Kumar; [2020]
   Keywords : Condition monitoring; fault detection; fault diagnosis; stator winding fault; inter-turn fault.; Tillståndsövervakning; feldetektering; feldiagnos; statorlindningsfel; kortslutning mellan varv.;

   Abstract : Condition monitoring techniques can be employed to enhance reliability of electric machinery. The stator winding fault is one of the dominant causes for the failure of induction machines. In this work, the condition monitoring of an inverter-fed induction machine using high-frequency signal injection based technique is investigated. READ MORE

5. 14. Method for coupling modulatedscattered light from free flyinginsects to harmonics and theirrelative phases

   University essay from Lunds universitet/Förbränningsfysik; Lunds universitet/Fysiska institutionen; Lunds universitet/Matematisk statistik

   Author : Martin Patricks; Ludvig Anderberg; [2020]
   Keywords : frequency estimation; phase estimation; matched phase reassignment; entomologic lidar; modulation spectroscopy; scattered light; Technology and Engineering;

   Abstract : Using laser it is possible to measure the backscattered light from insects. The resulting signal can then be analysed in order to potentially determine the species of the insect. READ MORE

6. 15. Quality Assessment of Thin Polymer Components using NonDestructive Testing : Degree Project for Master of Science in Mechanical Engineering with emphasis on Applied Mechanics

   University essay from Blekinge Tekniska Högskola/Institutionen för maskinteknik

   Author : Markus Nilsson; Tom Carlén; [2019]
   Keywords : nondestructive testing; polymer; nonlinear acoustics; instant dynamics amplitude recovery.; oförstörande provning; polymer; olinjär akustik; instant dynamics amplitude recovery;

   Abstract : Polymer components are used in many different applications, including in industries where critical applications put high requirements regarding quality assessment. Such applications might include medical or food where the presence of discontinuities might induce bacterial growth or other unpleasantries, thus certain manufacturers must be able to maintain a zero-tolerance towards damaged components. READ MORE