Essays about: "PWM"

Showing result 21 - 25 of 71 essays containing the word PWM.

  1. 21. Maximum Inverter AC Current Prediction Based on Junction Temperature Calculation

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

    Author : Shuyu Ou; [2019]
    Keywords : IGBT; Inverter; Junction temperature; Current Limiter; IGBT; Växelriktare; Övergångstemperatur; Strömbegränsare;

    Abstract : Semiconductor devices are widely used in the automotive industry, and they are key components of the inverter and the converter in an electric vehicle. Thus, the concern of protecting the inverter and the converter from damaging operation has been raised. The junction temperature is one of the main considerations. READ MORE

  3. 22. Thermal modeling of power electronic components in excitation systems

    University essay from

    Author : Fredrik Widberg; [2019]
    Keywords : Excitation systems; Power electronics; Thermal modeling;

    Abstract : This thesis work aims at developing a model in Visual Basic for Applications and Microsoft Excel that can be used to predict temperatures in semiconductor devices for two commercial products made by Voith Hydro AB, and via simulation of the model determine the maximum current that can be conducted through the two products. The two products are called field exciters. READ MORE

  4. 23. 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

  5. 24. Autonomous Hover Control System for a Radio-Controlled Aerobatic Airplane

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Erik Olov Ljudén; [2018]
    Keywords : mechatronics; hovering; airplane; PWM; aerobatics; mekatronik; hovring; flygplan; PWM; konstflygning;

    Abstract : Being able to fly has always been one of humanities greatestdreams, and today anyone can purchase a Radio-Controlled(RC) airplane or helicopter and learn how to fly. ExperiencedRC pilots perform stunts such as “prop hanging”.This is when an airplane flies vertically while maintainingits position with the propeller being the only motive force. READ MORE

  6. 25. Autonomous Hover Control System for a Radio-Controlled Aerobatic Airplane

    University essay from KTH/Mekatronik

    Author : ERIK OLOV LJUDÉN; [2018]
    Keywords : mechatronics; hovering; airplane; PWM; aerobatics.; mekatronik; hovring; flygplan; PWM; konstflygning.;

    Abstract : Being able to fly has always been one of humanities greatest dreams, and today anyone can purchase a Radio-Controlled (RC) airplane or helicopter and learn how to fly. Experienced RC pilots perform stunts such as “prop hanging”. READ MORE