Essays about: "Rotor dynamic"

Showing result 11 - 15 of 29 essays containing the words Rotor dynamic.

  1. 11. An Alternative Variable Valve Timing System for Heavy Duty Vehicles

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Mikael Eriksson; Daniel Olovsson; [2016]
    Keywords : Variable; Valve Timing; VVT; Cam phaser; Heavy Duty; Scania; Commercial Vehicles; GT-SUITE; Dynamic; On off valve; Product Development; Machine Element;

    Abstract : The ability to control engine valve timing has the potential to alter the engine performance over the entire operating range. The outcome of valve timing technology enables the possibility to increase efficiency, lowering emissions, increase engine torque, etc. One of the simplest ways to obtain a variable valve timing is to use cam phasers. READ MORE

  3. 12. 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

  4. 13. Hydrostatic transmission in wind turbines : Development of test platform

    University essay from Linköpings universitet/Fluida och mekatroniska system

    Author : Joel Rapp; Jonatan Turesson; [2015]
    Keywords : Wind turbine; Hydrostatic transmission; Test platform; Maximum power tracking; Hydraulic system;

    Abstract : This master thesis project is a part of a larger project with the goal of develop-ing a drivetrain, utilizing a hydrostatic transmission, for horizontal axis mid-sizewind turbines. Some of the benefits from using a hydrostatic transmission are thata variable speed operation is possible without the use of a frequency converter,the generator may be placed on the ground and thus reduce weight in the nacelleand also using hydraulic components can increase lifetime and robustness of thesystem. READ MORE

  5. 14. Sensorless Control for Dynamic Testing of Permanent Magnet Synchronous Machines

    University essay from Lunds universitet/Industriell elektroteknik och automation

    Author : Henrik Rydin Malmqvist; [2015]
    Keywords : Technology and Engineering;

    Abstract : This thesis investigates if it is possible to use the dynamic braking test method together with sensorless control. A literature study is conducted about different sensorless methods in order to find methods that fits the application. From the literature study are two sensorless methods implemented and simulated in Matlab Simulink. READ MORE

  6. 15. Evaluation of time varying stresses in a Howden fan

    University essay from Linnéuniversitetet/Institutionen för maskinteknik (MT)

    Author : Tim van Mierlo; Rafal Żywalewski; [2015]
    Keywords : Finite element analyses; Dynamic substructuring; Axial flow fan; Blade; Rotor dynamics; Centrifugal force;

    Abstract : In this work, the time varying stresses in a Howden axial flow fan are obtained by finite element analyses. Dynamic substructuring is used to obtain accurate values of the stresses in the threads of the blade shaft, the component which connects the blade with the hub. READ MORE