Results 11 to 20 of about 181 (134)
High VoltageThe submodule in multilevel modular converters experiences a very fast transient overvoltage (VFTO) during switch operation of gas‐insulated switchgear, which also results in overvoltage on power devices, such as thyristors and insulated gate bipolar ...
Hong Shen +7 more
doaj +3 more sources
Loss and Thermal Modeling of Metal Oxide Varistors (MOV) Under Standard Current Surge Mission Profile [PDF]
2019 IEEE Energy Conversion Congress and Exposition (ECCE), 2019 Because of their crucial role in protecting power electronic equipment against over-voltages and transients, metal oxide varistors (MOV) represent a key component of the electrical system. Although improper heat dissipation and internal temperature rises can lead to a significant decrease in performance or even to a wear-out failure of the MOV, there ...
Vernica, Ionut; id_orcid 0000-0002-3215-7606 +5 more
core +4 more sources
IEEE Open Journal of the Industrial Electronics SocietyMetal oxide varistor (MOV) is a nonlinear resistive element whose resistance decreases rapidly when the applied voltage exceeds a threshold value. A dc solid-state circuit breaker (SSCB) uses MOVs or MOV with resistor-capacitor-diode (RCD) snubber ...
Seong Jin Lim +3 more
doaj +2 more sources
AUTEX Research Journal, 2020 Electro-conductive (EC) yarns can be woven into a hybrid fabric to enable electrical current to flow through the fabric from one component A to another component B. These hybrid fabrics form the bases of woven e-textiles.
Hertleer Carla +5 more
doaj +3 more sources
Review and Analysis of Voltage Clamping Circuits With Low Overvoltage Ratios for DC Circuit Breakers
IEEE Open Journal of the Industrial Electronics SocietyVoltage clamping circuits are critical components in most direct-current circuit breakers (dcCBs) to achieve ultrafast dc fault interruptions and an extended lifetime.
Shuyan Zhao +4 more
doaj +2 more sources
High Voltage, Volume 8, Issue 6, Page 1275-1284, December 2023., 2023 Abstract With the development of a distributed generation, direct current (DC) load and energy‐storage equipment, voltage‐source‐converter‐based medium‐voltage DC systems (VSC‐MVDC) have attracted more attention due to its low power consumption, high reliability, independent power control and so on.
Muhammad Junaid +6 more
wiley +1 more source
Varistor coupling method and recommendation parameters for combination wave test
IET Science, Measurement &Technology, Volume 17, Issue 7, Page 277-286, September 2023., 2023 Low‐voltage varistors are adopted here in the OrCAD/PSpice environment to analyze the influence of varistor coupling on the output characteristic of the combination wave generator (CWG). Experiments have also been conducted here, and our simulation results are found to match the experimental ones well.
Mi Zhou +6 more
wiley +1 more source
Influence of UHV GIL access on transient recovery voltage of circuit breaker
电力工程技术, 2022 The access of ultra high voltage (UHV) gas-insulated transmission line (GIL) affects both the transient recovery voltage (TRV) amplitude and the rate of rise of TRV (RRRV) of circuit breakers,which may endanger the breaking capacity of circuit breakers ...
SUN Yi +5 more
doaj +1 more source
New Fault-Location Algorithm for Series-Compensated Double-Circuit Transmission Line
IEEE Access, 2020 This paper proposes a new fault location algorithm to accurately locate the faults of series-compensated double-circuit transmission line and improve the stability of power system operation, which is not affected by fault types. The proposed algorithm is
Daiying Cai, Jun Zhang
doaj +1 more source
IEEE Access, 2020 This article focuses on the problem that the voltage recovery time of relay protection circuits in converter stations is too long under lightning surges.
Yuqi Zhang, Weidong Zhang, Jianfei Ji
doaj +1 more source