Sökning: "Lumped Element Modelling"
Hittade 4 uppsatser innehållade orden Lumped Element Modelling.
1. High-Frequency Voltage Distribution Modelling of a Slotless PMSM from a Machine Design PerspectiveMaster-uppsats, KTH/Elkraftteknik
Sammanfattning : The introduction of inverters utilizing wide band-gap semiconductors allow for higher switching frequency and improved machine drive energy efficiency. However, inverter switching results in fast voltage surges which cause overvoltage at the stator terminals and uneven voltage distribution in the stator winding. LÄS MER
- H-uppsats, Chalmers tekniska högskola/Institutionen för tillämpad mekanik
Sammanfattning : Air-cooling is the most common way of cooling large generators like those used inhydropower. However, because these machines are quite complex and therefore, understandingthe cooling of these machines is not easy. LÄS MER
- Master-uppsats, Linköpings universitet/Linköpings universitet/ReglerteknikTekniska högskolan
Sammanfattning : Flow control is an area of research of particular interest within automotive and aerospace industries since methods used to affect the fluid flow around vehicles can reduce drag and therefore lower their fuel consumption. One of these methods, which has generated a lot of interest in later years, is called active flow control and uses different types of actuators to impact the surrounding flow. LÄS MER
- Uppsats för yrkesexamina på avancerad nivå, KTH/Elektrisk energiomvandling
Sammanfattning : In this paper two methods for thermally modelling the Synchronous Reluctance Machine (SynRM) have been developed and compared to measured data. The first is an analytical method for estimating the end winding temperature based on Brostr¨oms formula. Curve fitting to the measured data was done by Gauss-Newton estimation. LÄS MER