Essays about: "järnförluster"

Found 4 essays containing the word järnförluster.

  1. 1. Sensorless algorithm for synchronous machines using current oversampling and PWM harmonics

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

    Author : Giorgio Gullone; [2018]
    Keywords : ;

    Abstract : Sensorless-controlled drives represent a solution drawing an increasinglyimportant attention for the benefits they entail. At the cost ofa slightly lower dynamics compared with the traditional drives, theyinvolve a reduction of the system costs and complexity and improvednoise immunity and reliability. READ MORE

  2. 2. Study of Analytical Models for Harmonic Losses Calculations in Traction Induction Motors

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

    Author : Anaïs Maroteaux; [2016]
    Keywords : Analytical model; Bertotti; curve fitting; FEM 2D; harmonic losses; induction mo-tor; iron losses; Joule losses; skin and proximity effects.; Analytisk modell; Bertotti; kurvanpassning; FEM 2D; harmoniska förluster; asynkro-nmotor; järnförluster; Joule förluster; skineffekt och proximity effekt.;

    Abstract : This Master Thesis deals with the study of analytical and finite-element (FE) models for calculation of losses in traction induction motors. Motors are fed through inverters for this type of application. Therefore, both fundamental and harmonic losses are considered. The study is done with one particular motor and one initial analytical model. READ MORE

  3. 3. Manufacturing Effects on Iron Losses in Electrical Machines

    University essay from KTH/Elektrisk energiomvandling

    Author : Konstantinos Bourchas; [2015]
    Keywords : electrical machine; induction motor; iron losses; relative permeability; guillotine; ber laser; CO2 laser; laser settings; cutting effect; welding; electrical steel.; elektrisk maskin; induktion motor; järnförluster; relativ permeabilitet; giljotin; fiberlaser; CO2-laser; laser inställningar; skäreffekt; svetsning; elektromagnetisk plåt;

    Abstract : In this master thesis, the magnetic properties of SiFe laminations after cutting and weldingare studied. The permeability and the iron loss density are investigated since they arecritical characteristics for the performance of electrical machines. READ MORE

  4. 4. 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 theharmonic content of the applied voltages. Two cases are compared, one case where a machineis fed with a sinusoidial voltage and one case with a modular multilevel converter (M2C). READ MORE