Results 91 to 100 of about 340,675 (258)
A cusp electron gun for millimeter wave gyrodevices [PDF]
, 2010 The experimental results of a thermionic cusp electron gun, to drive millimeter and submillimeter wave harmonic gyrodevices, are reported in this paper.
A. D. R. Phelps +13 more
core +1 more source
High Voltage, Volume 10, Issue 1, Page 78-87, February 2025.Abstract Metal oxide varistors (MOVs) are extensively employed in DC circuit breakers (DCCBs) to suppress overvoltage, dissipate energy and build up voltage after interruption. Despite their widespread use, the performance of MOVs under short‐time, double energy absorption conditions is not well understood, posing a challenge to their application in ...
Chen Long +5 more
wiley +1 more source
Current Sensor Based on Rogowski Coil.
RE&PQJWe have built several Rogowski coil current sensors for measuring currents in non sinusoidal systems. In this paper we present the sensor and his behavior. We have built a generator of pulses in order to test it and we compare the results between two types of coils (flexible and Printed Circuit board PCB designed) and the linearity for measuring ...
null F. J. Arcega, null J. A. Artero
openaire +1 more source
Electrohydraulic effect of microsecond pulsed discharge in transformer oils
High Voltage, Volume 10, Issue 1, Page 137-145, February 2025.Abstract The physical process of microsecond pulsed discharge in transformer oil is the foundation for studying the initial mechanics of faults in ultra‐high voltage transformers. However, the microsecond‐scale electrohydraulic effect in transformer oil has not been investigated yet.
Hang Wang +5 more
wiley +1 more source
Development of a New Inverter-Current Measurement System Integrated in a Power Module [PDF]
, 2017 This paper proposes a new current measurement system for inverter control. The system consists of a Field-Program-Gate-Allay (FPGA), and tiny Rogowski-coils (PCB Rogowski-coil) made of a print-circuit-board.
一木 真生 +4 more
core +1 more source
High Voltage, Volume 10, Issue 1, Page 228-242, February 2025.Abstract To comprehensively evaluate the feasibility of using C4F7N‐based gas mixture as arc extinguishing medium, a comparative study is performed on the variations of the multi‐physical fields, gas flow environment and decomposition characteristics of the gas mixtures.
Wen Wang +3 more
wiley +1 more source
Cryogenic DC Circuit Breaker Based on High‐Power Press‐Pack IGBT
IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.This paper presents the performance of cryogenically compatible 3.3 kV/1.5 kA PP‐IGBTs as the main circuit breaker in a hybrid circuit breaker. The 3.3 kV/1.5 kA press‐pack IGBT can interrupt currents exceeding 5.1 kA when immersed in a liquid nitrogen bath. PP‐IGBTs are promising candidates for high‐power circuit breakers in cryogenically cooled power
Zhongying Wang +9 more
wiley +1 more source
Electric Current Sensors: a Review [PDF]
, 2010 The review makes a brief overview of traditional methods of measurement of electric current and shows in more detail relatively new types of current sensors.
Ripka P.
core +1 more source
Application of Sensors and Digitalization Based on IEC 61850 in Medium Voltage Networks and Switchgears [PDF]
, 2016 Vzduchem izolované vysokonapěťové rozváděče jsou nedílnou součástí energetického distribučního řetězce a to jak v průmyslovém, tak ve veřejném sektoru. Hlavní funkcí rozváděče je ochrana pracovního personálu, rozpojování/odpojování a spínání, izolování ...
Štefanka, Martin
core
Positional Error Analysis of PCB Rogowski Coil for High Accuracy Current Measurement
Advances in Mechanical Engineering, 2013 Geometrical, physical, and electrical parameters have influences on the precision of printed circuit board Rogowski coils (PCBRCs). This paper outlined operating principles and properties of PCBRCs.
Gang Zhang, Yi Liu
doaj +1 more source