Results 21 to 30 of about 7,321,935 (205)
Overvoltage Robustness of p-Gate GaN HEMTs in High Frequency Switching up to Megahertz
, 2023 This article investigates the ruggedness of the GaN high electron mobility transistor (HEMT), a power device without avalanche capability, in continuous, high-frequency, overvoltage switching.
Li, Qiang +7 more
core +1 more source
Setup for measuring and simulating high-frequency overvoltages of power transformer
2019 2nd International Colloquium on Smart Grid Metrology (SMAGRIMET), 2019 During their operation, power transformers are stressed by switching and lightning overvoltages. Transformers that are extensively exposed to these stresses are usually equipped with transformer monitoring system which enables assessing the transformer’s condition at any given time.
Jurišić, Bruno +3 more
openaire +3 more sources
Zhongguo dianli, 2021 China's primary energy production bases and load centers are inversely distributed and the renewable energy of the production base cluster is delivered through UHVDC cluster, so the coupling characteristics of wind power and DC are complex in the power ...
Zhaohui QIE +4 more
doaj +1 more source
, 2022 Surge-energy and overvoltage ruggedness of power devices are desired in many power applications. For the GaN high-electron-mobility transistor (HEMT), a device without avalanche capability, its surge-energy and overvoltage ruggedness are both determined ...
Li, Qiang +3 more
core +1 more source
Calculation Method of DC Fault Overvoltage Peak Value for Multi-Send HVDC Systems with Wind Power
, 2023 Commutation failure (CF) and DC blocking (DCB) faults are common occurrences in high-voltage direct current (HVDC) systems, and their impact on the power grid can be significant due to sudden power fluctuations. These issues pose particular challenges in
Mingjie Wang +8 more
core +1 more source
Infeasibility Analysis of Half-Wavelength Transmission Systems
Energies, 2018 This paper analyzes the infeasibility of half-wavelength transmission systems in the aspects of power-frequency overvoltage and synchronization stability. The circuit model of the long-distance transmission system is established at first for steady-state
Zheng Xu, Jian Yang, Nengjin Sheng
doaj +1 more source
Experimental High-Frequency Parameter Identification of AC Electrical Motors [PDF]
, 2007 In order to predict conducted electromagnetic interference in inverter-motor drive systems, high-frequency (HF) motor models are requested and the involved parameters have to be available.
Boglietti, Aldo +2 more
core +1 more source
Insulator fault feature extraction system of substation equipment based on machine vision
IET Networks, EarlyView., 2022 Abstract The artificial intelligence technology and intelligent automation are more and more widely used, the insulators play a supporting and insulating role in the operation of the grid. The use of machine vision inspection technology to detect insulator faults has become an inevitable trend of the times.
Keruo Jiang +4 more
wiley +1 more source
GaN HEMTs in High-Frequency Overvoltage Switching: Electrical or Thermal Failure?
, 2023 GaN high-electron-mobility transistors (HEMTs) have no avalanche capability and are known to fail electrically when the transient overvoltage reaches their dynamic breakdown voltage (BVDYN).
Li, Qiang +3 more
core +1 more source
Overvoltage and Oscillation Suppression Circuit With Switching Losses Optimization and Clamping Energy Feedback for SiC MOSFET [PDF]
, 2021 The snubber circuit is a cost-effective solution to reduce the severe turn-off overvoltage and oscillation caused by the fast switching characteristics of SiC MOSFET.
Yang, Chengzi +11 more
core +2 more sources