Sökning: "Polarization Depolarization Current"

Hittade 2 uppsatser innehållade orden Polarization Depolarization Current.

1. 1. Dielectric Response and Partial Discharge Characteristics of Stator Winding Insulation System with SiC Stress Grading

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Amar Abideen; [2020]
   Nyckelord :Stator Insulation; Dielectric Frequency Response; Polarization Depolarization Current; Insulation Modelling; FEM simulation;

   Sammanfattning : The typical construction of a stator coil includes the use of end corona protection (ECP)coating, which is made of semi-conductive materials like silicon carbide (SiC). Thepurpose of ECP is to smooth the electric stress distribution near the slot exit, limitingthe electric field and partial discharge (PD) activity within the insulation system. LÄS MER

3. 2. Investigation of Fast High Voltage PDC Measurement based on a Vacuum Reed-switch

   Master-uppsats, KTH/Elektroteknisk teori och konstruktion

   Författare :Zeeshan Talib; [2011]
   Nyckelord :step voltage; polarization and depolarization current; vacuum reed switch.;

   Sammanfattning : The diagnostic technique, polarization and depolarization current (PDC) is useful for insulation testing. It requires applying a DC step voltage to the test sample and measuring the current. To measure fast PDC phenomena a fast step is needed. One way of applying a fast high voltage step is to use power electronic switches. LÄS MER