Results 21 to 30 of about 37,003 (356)

Application of operational modal analysis to investigate transformer vibration patterns

IET Generation, Transmission & Distribution, 2022
This paper develops an operational modal analysis application framework for vibration measurement‐based condition monitoring of transformer winding structure.
Jakob Pallot, Chandima Ekanayake, Hui Ma, Lakshitha Naranpanawe   +3 more
doaj   +1 more source

Simulation and Analysis of 3 D Transient Leakage Magnetic Field and Electromotive Force of Power Transformer

Journal of Harbin University of Science and Technology, 2021
In order to analyze the transient magnetic field and transient electrodynamic characteristics of transformer windings under shorL-circuit impact, according to the Lheo1-y of leakage magnetic field of transformer windings and the principle of calculation ...
MU Long, CHEN Bo-gen, CAI Feng, WU Li-ming, DU Guo-an, lAN Sheng   +5 more
doaj   +1 more source

Study on the Method of Calculating Temperature Rise of Transformer [PDF]

E3S Web of Conferences, 2020
The internal temperature of the transformer is a key parameter to measure the thermal state of the transformer. The service life of the transformer generally depends on the life of the insulating material, and high temperature is the main reason why ...
Li Tao, Du Xiaoping, Sun Xuewu, Song Yuanyuan   +3 more
doaj   +1 more source

Transformer design difficulties of current resonant converter for high power density and wide input voltage range [PDF]

, 2017
A current resonant converter including wider input voltage range and higher power density is required for various applications. However, in our study, it has been found that the drastic increasing of the transformer winding loss becomes a severe problem.
Abe Seiya, Zaitsu Toshiyuki
core   +2 more sources

Achieving the desired transformer leakage inductance necessary in DC-DC converters for energy storage applications [PDF]

, 2012
This paper presents a cost effective winding design and evaluation of a medium frequency isolation transformer typically used in bidirectional isolated DC/DC converters.
Asher, Greg, De, D., Klumpner, Christian, Kulsangcharoen, P., Patel, C., Rashed, Mohamed   +5 more
core   +1 more source

MACHINE-TRANSFORMER UNITS FOR WIND TURBINES

Electrical Engineering & Electromechanics, 2016
Background. Electric generators of wind turbines must meet the following requirements: they must be multi-pole; to have a minimum size and weight; to be non-contact, but controlled; to ensure the maximum possible output voltage when working on the power supply system. Multipole and contactless are relatively simply realized in the synchronous generator
V.I. PANCHENKO, D.V. TSYPLENKOV, A.M. GREBENIUK, M.S. KYRYCHENKO, O.V. BOBROV   +4 more
openaire   +5 more sources

Evaluation Method for Winding Performance of Distribution Transformer

Energies, 2021
In order to ensure the safe and stable operation of a power system, the performance evaluation of transformer windings after a short-circuit test can predict whether the windings are deformed in order to provide a useful reference for the operation and ...
Chunguang Suo, Yanan Ren, Wenbin Zhang, Yincheng Li, Yanyun Wang, Yi Ke   +5 more
doaj   +1 more source

Numerical calculation of the lightning transient voltage distribution on converter transformer winding based a dual winding model

The Journal of Engineering, 2019
The insulation co-ordination of converter transformer winding has a great influence on power system security. An equivalent circuit of a 500 kV converter transformer winding structure, including a LC equivalent network circuit and an ideal transformer in
Hongrui Jia, Xuezhong Liu, Shijin Tian, Lin Wang, Fei Gao   +4 more
doaj   +1 more source

Comparisons of transformer thermal behaviours between conventional disc type and S disc type windings

IET Generation, Transmission & Distribution, 2022
Controlling the highest temperature in the windings is the primary objective of transformer thermal design to guarantee designed transformer thermal life expectancy.
Xiang Zhang, Qiang Liu, Zhongdong Wang, Mark Wilkinson   +3 more
doaj   +1 more source

Fault diagnostics in power transformer model winding for different alpha values

Journal of Electrical Systems and Information Technology, 2015
Transient overvoltages appearing at line terminal of power transformer HV windings can cause failure of winding insulation. The failure can be from winding to ground or between turns or sections of winding.
G.H. Kusumadevi, G.R. Gurumurthy
doaj   +1 more source