Results 41 to 50 of about 431,967 (309)
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 +1 more source
Progressive fault isolation and grid restoration strategy for MTDC networks [PDF]
, 2018 A multi-terminal dc (MTDC) grid has a number of advantages over traditional ac transmission. However, dc protection is still one of the main technical issues holding back the expansion of point-to-point dc links to MTDC networks.
Adamczyk, Andrzej +5 more
core +1 more source
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
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
doaj +1 more source
Short circuit protection for a power distribution system [PDF]
, 1969 Sensing circuit detects when the output from a matrix is present and when it should be present. The circuit provides short circuit protection for a power distribution system where the selection of the driven load is accomplished by digital ...
Owen, J. R., III
core +1 more source
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
Energies, 2021 Like the widely-used semiconductor switch, Insulated Gate Bipolar Transistors (IGBTs) are subject to many failures and degradation in power electronic converters.
Sadegh Mohsenzade +2 more
doaj +1 more source
Line protection against overload and short circuit [PDF]
, 2010 Tato práce zahrnuje teoretické pojednání o působení elektrického proudu na elektrické vedení v oblasti přetížení a zkratu. Jedná se hlavně o tepelné účinky těchto nadproudů a jejich vliv na vlastnosti vodiče a jeho izolace.
Konšel, Ladislav
core
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
Development of Short-Circuit Protection in Hands-On Electronic Training Set for Vocational Education
Proceedings, 2022 Hands-on activities are one of the characteristics of vocational learning. Learners will be triggered to activate their cognitive and psychomotor aspects with hands-on activities.
Andik Asmara
doaj +1 more source