Essays about: "switching overvoltage"

Found 2 essays containing the words switching overvoltage.

  1. 1. High-Frequency Voltage Distribution Modelling of a Slotless PMSM from a Machine Design Perspective

    University essay from KTH/Elkraftteknik

    Author : Patrik Brauer; [2018]
    Keywords : Windings; drives; transients; surges; steep-fronted; slotless; litz-wire; effective relative permeability; Lindningar; elektriska drivlinor; transienter; spänningspulser; litz-tråd; effektiv relativ permeabilitet;

    Abstract : 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. READ MORE

  3. 2. Electrical Surge Protection at Hydropower Plants

    University essay from Uppsala universitet/Institutionen för teknikvetenskaper

    Author : Martin Ölund; [2016]
    Keywords : surge arrester; overvoltage; hydropower; surge capacitor; lightning overvoltage; switching overvoltage;

    Abstract : Hydropower plants contains a lot of vital electrical power technology such as generators and transformers. To prevent damage to this equipment due to overvoltage, they are often protected by surge arrester and in some cases also by surge capacitors. READ MORE