Results 21 to 30 of about 29,405 (266)
Frontiers in Energy Research, 2021 With the enlarging scale of doubly-fed induction generators (DFIGs) connected to power systems, it is important to analyze the influence of a short-circuit current to system relay protection.
Jun Yin
doaj +1 more source
A Novel IC Measurement Without Blanking Time for Short-Circuit Protection of High-Power IPM
IEEE Access, 2020 Intelligent power module (IPM) short-circuit protection is a key factor in improving the reliability of power electronics systems. The conventional short-circuit detection method based on monitoring the collector-emitter voltage (VCE) desaturation has a ...
Zhaoliang Meng +6 more
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IET Power Electronics, 2022 Hybrid switching technologies such as zero voltage switching (ZVS) and zero current switching (ZCS) are widely accepted to protect DC power systems from different kinds of faults.
Zhuangxian Jiang +5 more
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IEEE Access, 2023 Due to the pseudo-bipolar structure of the flexible DC distribution network, the short-circuit current caused by a pole-to-ground fault is weak. The fault characteristics, particularly the steady-state fault characteristics, are not prominent. Therefore,
Hao Qi +6 more
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Short-circuit protection for direct-current sub-stations [PDF]
Journal of the American Institute of Electrical Engineers, 1920 The author includes an outline of the progress made in protection of direct-current machinery from short circuits since the publication of a paper at Atlantic City on this subject. The improvements mentioned include the refinement and perfection in details of the flash barriers; a new design of high-speed circuit breaker for both direct-current ...
openaire +3 more sources
Research on Crowbar Protection Circuit in Traction Converter
机车电传动, 2021 In view of the current status of IGBT failures causing serious consequences in traction converter, several common IGBT power module failure modes were analyzed, crowbar protection circuit and principle were introduced, and the qualitative and ...
Yupeng LI +5 more
doaj
Diversity and complexity in neural organoids
FEBS Letters, EarlyView.Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley +1 more source
Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment
Molecular Oncology, EarlyView.This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley +1 more source
Applied Sciences, 2022 In electrical machinery, the rotor windings’ internal short-circuit faults are addressed by the instantaneous over-current protection of the power electronic excitation device, which has low sensitivity and has difficulty meeting the safety requirements.
Rufei He +6 more
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Acute caffeine treatment protects the developing retina from ischemia‐induced cell death
FEBS Open Bio, EarlyView.Caffeine reduces cell death in the developing retina under ischemia (OGD). This effect does not involve BDNF upregulation or antioxidant pathways (NRF2/VEGF). Neuroprotection occurs mainly through adenosine A2A receptor antagonism, decreasing glutamate release and excitotoxicity, highlighting caffeine's potential as an acute neuroprotective agent in ...
Amanda Alves Nascimento +6 more
wiley +1 more source