Essays about: "AC-machines"

Found 4 essays containing the word AC-machines.

  1. 1. Improved Thermal Models for Predicting End Winding Heat Transfer

    University essay from KTH/Elkraftteknik

    Author : Gabriele Luca Basso; [2017]
    Keywords : ;

    Abstract : The thermal analysis is of primary importance for the design of any kind of electrical machine. The cooling has a significant impact on the electromagnetic performances and on the durability and reliability of the machine. READ MORE

  3. 2. Experimental Comparison of Losses in a Grid-connected and M2C-fed 11kW Induction Motor

    University essay from KTH/Elektrisk energiomvandling

    Author : GUSTAV MÖRÉE; [2015]
    Keywords : power losses; electric machines; AC-machines; induction machines; harmonic content; iron losses; modular multilevel converter M2C ; effektförluster; elektriska maskiner; AC-maskiner; asynkronmaskiner; övertonsinnehåll; järnförluster; modulär multinivå omvandlare M2C ;

    Abstract : This thesis analyzes the power losses in induction machines and how the losses depend on the harmonic content of the applied voltages. Two cases are compared, one case where a machine is fed with a sinusoidial voltage and one case with a modular multilevel converter (M2C). READ MORE

  4. 3. Theoretical investigations of stator iron losses in a 15 MW induction motor equipped with fractional conductor windings

    University essay from KTH/Elektrisk energiomvandling

    Author : Makhdoomzada Asadullah Siddiqui; [2011]
    Keywords : ;

    Abstract : Iron loss calculation in AC machines has aroused great interest over the years, in an attempt to make electrical machines more efficient. However, different iron loss models yield different results for the same machine, owing to their individual limitations. READ MORE

  5. 4. Magnetic and Electric Characterization of Materials for Electrical Machines

    University essay from KTH/Elektrisk energiomvandling

    Author : M S Muhit; [2011]
    Keywords : ;

    Abstract : This thesis aims to characterize materials for electrical machines. Electromagnetic properties (b-hcurves) and electrical resistivity were the main properties investigated in the project work. Two types of samples are considered: stator lamination sheet and rings made of steel used for structural pieces in large AC machines. READ MORE