Sökning: "stator"
Visar resultat 6 - 10 av 124 avhandlingar innehållade ordet stator.
6. Permanent magnet motor drives with switched stator windings
Sammanfattning : Permanent magnet (PM) motors aretoday regarded as aninteresting solution for a wide range ofinverter-fedvariable-speed drives. The generally increasedinterest in these motors hasled to many investigations on theirfeasibility for vehicle propulsion. LÄS MER
7. Stator fault detection and parameter estimation in induction machines
Sammanfattning : In this licentiate thesis the fascinating area of induction machines is considered. Three different problems are treated, each one of them being more or less unsolved although many researchers around the world have addressed them extensively. LÄS MER
8. Improved performance characteristics of induction machines with non-skewed symmetrical rotor slots
Sammanfattning : Induction machines convert more than 55% of electrical energy into various other forms in industrial and domestic environments. Improved performance, especially by reduction of losses in induction machines hence can significantly reduce consumption of electricity. LÄS MER
9. Flow over rough surfaces, and conjugate heat transfer, in engineering applications
Sammanfattning : This thesis focuses on two important topics in the field of fluid mechanics and heat transfer that were treated separately. On the one hand, the flow over rough surfaces, which is not yet completely understood, despite of the fact that it has an important implication in many engineering applications, especially in the naval industry for ships and boats because the friction drag caused by fouling, antifouling coatings and roughness in general impacts the fuel consumption and toxic emissions to the atmosphere. LÄS MER
10. Partial Discharge Analysis of Stator Insulation at Arbitrary Voltage Waveform Stimulus
Sammanfattning : Partial discharge (PD) detection is a powerful tool to diagnose the defects and degradation in high voltage electrical insulation systems. It can be performed in both on-line and off-line conditions. LÄS MER