Results 21 to 30 of about 28,492 (307)

Semi-analytical calculation method for parasitic capacitance of high-frequency transformers based on partitioned solution [PDF]

AIP Advances
The parasitic capacitance of the windings significantly affects the transmission characteristics of high-frequency transformers, and its accurate calculation is crucial for the optimal design of transformers.
Yongjian Li, Jinghao Liu, Zhenyu Wan, Shuaichao Yue, Zhenghua Cao, Bin Chen   +5 more
doaj   +1 more source

Investigation of propagation of partial discharges in power transformers and techniques for locating the discharge [PDF]

, 2005
The location of partial discharges in a power transformer can be determined based on the characteristics of the transfer function from the discharge source to the measuring terminal.
Crossley, P.A., Crossley, P. A., Hettiwatte, S.N., Wang, Z.D., Hettiwatte, S. N., Wang, Zhong Dong   +5 more
core   +2 more sources

Bragg grating based integrated photonic Hilbert transformers [PDF]

, 2013
Planar Bragg grating based photonic Hilbert transformers are experimentally demonstrated in this work. Planar Bragg gratings are utilized to implement a general Hilbert transform, a fractional order Hilbert transform and terahertz bandwidth Hilbert ...
Smith, P.G.R., Sima, C., J. C. Gates, Chaotan Sima, M. N. Zervas, Gates, J.C., P. G. R. Smith, Zervas, M.N.   +7 more
core   +1 more source

Improving Vision Transformers by Revisiting High-Frequency Components

, 2022
The transformer models have shown promising effectiveness in dealing with various vision tasks. However, compared with training Convolutional Neural Network (CNN) models, training Vision Transformer (ViT) models is more difficult and relies on the large-scale training set.
Jiawang Bai, Li Yuan 0007, Shu-Tao Xia, Shuicheng Yan, Zhifeng Li 0001, Wei Liu 0005   +5 more
openaire   +2 more sources

Frequency Dependent Model of Leakage Inductance for Magnetic Components [PDF]

, 2012
Theoretical methods for the calculation of winding losses with respect to frequency have been well documented, but the variation in leakage inductance of magnetic components due to frequency has been less well addressed. In this paper Dowell’s well-known
Wilcock, Reuben, Wilson, Peter R., Wilson, P. R., P. R. Wilson, R. Wilcock, Wilcock, R.   +5 more
core   +1 more source

High frequency transformation of Bordetella by electroporation [PDF]

FEMS Microbiology Letters, 1988
A simple and efficient system is described for the transformation of Bordetella species with a plasmid of the P incompatibility group. The parameters tested to obtain the highest frequency of transformation were strain, initial field strength, number of pulses and DNA and cell concentration. The most important variable was found to be the initial field
Gavin Zealey, Michel Dion, Sheena Loosmore, Reza Yacoob, Michel Klein   +4 more
openaire   +2 more sources

Leakage Inductance Reduction Using the Interleaved Winding Technique in High-Frequency Toroidal Transformers

International Journal of Technology
High leakage inductance in transformers is the main cause of excessive voltage spikes and ringing waveforms in dc-dc converters. Therefore, reducing leakage inductance is important in the design of power electronic devices.
Dody Yunus Putra Siregar, Wijono, Muhammad Aziz Muslim   +2 more
doaj   +1 more source

Calculation Model of Parasitic Capacitance for High-Frequency Inductors and Transformers

IEEE Access, 2023
With high power density and high-frequency power electronics technologies, parasitic capacitances of inductors and transformers have been widely discussed, in which parasitic capacitance may lead to electromagnetic interference (EMI) and efficiency ...
Yujie Lan, Lei Yang, Xu Zhang, Qingbin Chen, Zaiping Zheng   +4 more
doaj   +1 more source

High frequency transformer computer modeling [PDF]

2007 Australasian Universities Power Engineering Conference, 2007
Frequency response analysis (FRA) technique is nowadays widely used in both factory and field applications as a diagnostic tool for power transformers. The main problem about FRA techniques is to interpret the observed evolution of the frequency response in order to identify failures.
Ahmed A. Siada, Syed Islam
openaire   +1 more source

Analysis and research on the fault-tolerant performance of the high-frequency isolated energy conversion link for an integrated distribution transformer system

The Journal of Engineering, 2019
In order to enhance the stability of the integrated distribution transformer system (IDTS), a fault-tolerant topology of the high-frequency (HF) isolated energy conversion link which features a multi-winding HF transformer and two multi-arm converters ...
Qingshan Wang, Deliang Liang, Yibin Liu, Qixu Chen, Mingkang Zhang   +4 more
doaj   +1 more source