Results 31 to 40 of about 782,951 (248)

Research on error analysis and calibration technology of current transformers under the influence of DC bias magnetization

Diance yu yibiao
Under the influence of DC bias, the iron core of the current transformer is prone to saturation, causing the ratio error to shift towards negative direction and the phase error to shift towards positive direction, resulting in measurement inaccuracy ...
YIN Shihong, FAN Xiaofei, SONG Hongtian, ZHAO Xuesong, QIU Xing, LUO Yi   +5 more
doaj   +1 more source

Performance analysis of three‐phase five‐leg transformers under DC bias using a new frequency‐dependent reluctance‐based model

IET Generation, Transmission & Distribution, 2022
This paper presents a reluctance‐based model considering the frequency‐dependent loss nature of the windings for the analysis of three‐phase five‐leg transformers under grid voltages with direct current (DC) bias.
Sevket Canturk, Murat Erhan Balci, Mehmet Hakan Hocaoglu, Ahmet Kerem Koseoglu   +3 more
doaj   +1 more source

Research on the Magnetostrictive Characteristics of Transformers under DC Bias

, 2023
Direct current (DC) bias leads to increased vibration and noise in transformers. One of the main causes is the magnetostrictive effect of the transformer core.
Xiaodong Yu, Xiaoli Yan, Xia Dong, Guozheng Han, Fengying Ma   +4 more
core   +1 more source

UHF diagnostic monitoring techniques for power transformers [PDF]

, 2004
This paper initially gives an introduction to ultra-high frequency (UHF) partial discharge monitoring techniques and their application to gas insulated substations.
Bennoch, C.J., Hunter, Ian, B.B., Judd, M.D., Yang, L.   +3 more
core   +2 more sources

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

FEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa, Shinya Sugimoto, Toshiro Sato   +2 more
wiley   +1 more source

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

FEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta, Hari Baskar Balasubramanian, Amir Pasokh, Marietta Zille   +3 more
wiley   +1 more source

Study of the decoupling magnetic integrated high‐frequency transformer for DC/DC converter

IET Power Electronics
The isolated DC/DC converter plays an irreplaceable role in the development of the DC microgrid. However, the multiple discrete high‐frequency transformers occupy considerable volume in power converters due to the connection of multiple isolated ...
Dezhi Chen, Shichong Zhang, Baodong Bai, Zhixiang Zhang, Zhaoning Yang   +4 more
doaj   +1 more source

Bridging in contaminated transformer oil under DC and AC electric field

, 2013
One of the key components in high voltage transmission and distribution systems are power transformers and their consistent operation is of utmost importance to energy utilities and users.
Wilson, G, Mahmud, S., Jarman, P, Golosnoy, I. O., Mahmud, S, Chen, G., Wilson, G., Golosnoy, I O, Chen, G, Jarman, P.   +9 more
core   +1 more source

Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding

FEBS Letters, EarlyView.
In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança, Eline L. Jansen, Jorine M. Eeftens   +2 more
wiley   +1 more source

DC transformer modeling and control of DC-DC buck converter

International Journal of Power Electronics and Drive Systems (IJPEDS), 2019
Switching Power Converters convert one form of power to another with high ef-ciency and accurate control.One of the most widely used DC-DC Converter is Buck Converter. Control is invariably required to maintain the output voltage/current in spite of variations in source/load. In order to design the controller and gain insight about the system a dynamic
Sarun Soman, Nishtha Shelly, Ciji Pearl Kurian, Sudheer Kumar T.S   +3 more
openaire   +2 more sources