Sökning: "Starting torque"
Visar resultat 1 - 5 av 9 avhandlingar innehållade orden Starting torque.
1. On Inter-bar Currents in Induction Motors with Cast Aluminium and Cast Copper Rotors
Detta är en avhandling från Stockholm : KTHSammanfattning : This thesis presents a study of the effects of inter-bar currents on inductionmotor starting performance and stray-load losses. The work is focused on theperformance differences between aluminium and copper casted rotors.A method to predict the stator current when starting direct-on-line isdeveloped. LÄS MER
2. Analysis and Reduction of Parasitic Effects in Induction Motors With Die-Cast Rotors
Detta är en avhandling från Stockholm : KTH Royal Institute of TechnologySammanfattning : This thesis presents a study of inter-bar current effects on induction motors with die-cast aluminium and die-cast copper rotors. The parasitic effects introduced by these currents are analyzed and possible solutions to these problems are presented. This is realized by developing analytical tools for the simulation of inter-bar current effects. LÄS MER
3. Analysis and control of magnetic forces in synchronous machines
Detta är en avhandling från Uppsala : Acta Universitatis UpsaliensisSammanfattning : In a synchronous machine, radial, tangential, and axial forces are generated. In this thesis, three different technologies to control them are proposed. The first one, involves the utilization of the radial forces that arise between the rotor and the stator. LÄS MER
4. Truck Steering System and Driver Interaction
Detta är en avhandling från Uppsala : Acta Universitatis UpsaliensisSammanfattning : This thesis presents a compilation of methods to consider when mapping steering functions and results as vehicle dimensions change. It is concluded that some final tuning inevitably will be required as major changes are performed. It is however possible to create qualified starting points using a set of simple rules as presented. LÄS MER
5. Rolling bearing lubrication at low temperature
Detta är en avhandling från Luleå : Luleå tekniska universitetSammanfattning : Problems connected with rolling bearings at low temperatures are high starting and running friction, concerns about the presence of a lubricating film and the degree of roller slip at low-temperature start-up. Also, questions have been raised whether the high shear stresses in a grease sheared at low temperature could cause thickener degradation. LÄS MER
