Essays about: "rectifier"

Showing result 16 - 20 of 35 essays containing the word rectifier.

  1. 16. 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

  3. 17. Power Electronic Stages for a TFPMSM in Wave Power Applications

    University essay from KTH/Skolan för elektro- och systemteknik (EES)

    Author : Gustaf Falk Olson; [2016]
    Keywords : transverse flux permanent magnet synchronous machine TFPMSM ; active rectifier; direct drive wave energy converter; feedback linearization; cascaded PID controller.;

    Abstract : Direct drive wave energy conversion systems have been identified as a potentially major contributor to the world’s energy demands, forecasting shares of up to 25 % of the energy mix. Anders Hagnestål conducts research at the Royal Institute of Technology where a novel linear transverse flux permanent magnet generator is developed. READ MORE

  4. 18. Development of EMT Simulation Model to Use RMS Control Model

    University essay from KTH/Skolan för elektro- och systemteknik (EES)

    Author : Priya Kalikavunkal; [2016]
    Keywords : ;

    Abstract : Evolution is continuous and as a result, developments in semiconductors are endless. This led to the Voltage Source Converter (VSC) based High Voltage Direct Current (HVDC) converter termed as HVDC light. HVDC light is quite preferable because of its pros in the technology used as well as the application it is used for. READ MORE

  5. 19. Peptide Retention Time Prediction using Artificial Neural Networks

    University essay from KTH/Matematisk statistik

    Author : Sara Väljamets; [2016]
    Keywords : ;

    Abstract : This thesis describes the development and evaluation of an artificial neural network, trained to predict the chromatographic retention times of peptides, based on their amino acid sequence. The purpose of accurately predicting retention times is to increase the number of protein identifications in shotgun proteomics and to improve targeted mass spectrometry experiment. READ MORE

  6. 20. Active rectification and control of magnetization currents in synchronous generators with rotating exciters : Implementation of the SVPWM algorithm using MOSFET technology

    University essay from Uppsala universitet/Elektricitetslära

    Author : Tomas Johansson; [2015]
    Keywords : rectification; SVPWM; space vector pulse width modulation; current control; active rectification; three phase;

    Abstract : This thesis aims to design and build a power electronics system for the rectification and control of magnetization currents in synchronous generators with rotating exciters.The rotating exciter provides three-phase AC while the generator rotor needs DC with a high degree of control. READ MORE