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Found 5 essays matching the above criteria.

1. 1. Neural Networks for Modeling of Electrical Parameters and Losses in Electric Vehicle

   University essay from Högskolan i Skövde/Institutionen för ingenjörsvetenskap

   Author : Yo Fujimoto; [2023]
   Keywords : Artificial neural network; machine learning; random forest; deep learning; electric vehicle; decision tree; k-nearest neighbors; permanent magnet synchronous machine;

   Abstract : Permanent magnet synchronous machines have various advantages and have showed the most superiorperformance for Electric Vehicles. However, modeling them is difficult because of their nonlinearity. READ MORE

3. 2. Fault current injection from Inverter Based Generation in the distribution grid : A case study of distribution grid on the Swedish island of Gotland

   University essay from Uppsala universitet/Institutionen för elektroteknik

   Author : Farsad Mansori; [2022]
   Keywords : Distribution generator; Inverter-Based Distributed Generation; Inverter Based Generation; DFIG; PSCAD; Distribution grid; Overcurrent protection;

   Abstract : This work proposes recommendations for new guidelines for fault current injection on a distribution grid. These guidelines will help improve the transition towards renewable electrical energy generation. READ MORE

4. 3. Implementation and experimental evaluation of a parameterized PMSynRM model using Matlab and Comsol Multiphysics

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

   Author : Israt Jahan; [2019]
   Keywords : Comsol Multiphysics; eddy-current losses; permanent-magnet synchronous reluctance motors; reluctance; Comsol Multiphysics; virvelströmsförluster; permanentmagnet synkrona reluktansmotorer; reluktans;

   Abstract : This thesis focuses on modelling of the permanent magnet synchronous reluctancemotor (PMSynRM), which has drawn considerable attention by researchers thanks toits high efficiency and wide range of speed operation. Comparisons with measurementsfrom a four-pole PMSynRM with four barriers and 24 stator slots have been carriedout. READ MORE

5. 4. Field Current Control for the Damping of Rotor Oscillations and for the Alternative Start of Synchronous Machines : Further Innovative Applications of Field Current Active Control besides UMP-Compensation

   University essay from Uppsala universitet/Institutionen för teknikvetenskaper

   Author : Roberto Felicetti; [2018]
   Keywords : asynchronous start; current control; damping bars; damper winding; d-axis; q-axis; hunting; natural frequency; Park s reference frame; rotor back-EMF; rotor oscillations; synchronous motor;

   Abstract : The possibility to save energy in synchronous machines operation by dismissing d-axis damping bars and surrogating them with active excitation current control in sectored field winding is proved. In particular a way to recover the energy of rotor oscillations during power regulation is shown by means of a studycase generator whereas a self-starting machine is analytically and numerically designed in view of its next construction and test. READ MORE

6. 5. Synchronous generator rotor position estimation from stator and rotor terminal currents and voltages

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

   Author : Wille Kiuru; [2016]
   Keywords : ;

   Abstract : This thesis presents an alternative method for measuring the rotor position of a synchronousgenerator, without the use of sensors to measure the rotor position. The method uses thecurrent and voltage measurements on the stator and rotor terminals from the protectionrelays. READ MORE