Results 11 to 20 of about 31,975 (291)

Two Winding Transformer Equivalent Model of Three Winding Transformers for MATPOWER

open access: yesDEStech Transactions on Engineering and Technology Research, 2020
MATPOWER is one of wide used authoriterative open source software of power flow calculation in the world. However, it only provides a model of the two-winding transformer thus limiting its application in power system with a three-winding transformer which is very popular in the power system.
MD MUNNA TALUKDER   +3 more
openaire   +2 more sources

Optimization of Transformer Winding Deformation Assessment Criterion Considering Insulation Aging and Moisture Content

open access: yesEnergies, 2020
Frequency response analysis is widely used to diagnose transformer winding deformation faults due to its high sensitivity, strong anti-interference capability, and equipment portability, but the results of frequency response analysis can be affected by ...
Qian Wu   +7 more
doaj   +1 more source

Highly Efficient HBT Power Amplifier Using High-Q Single- and Two-Winding Transformer With IMD3 Cancellation

open access: yesIEEE Access, 2021
This paper presents a highly efficient InGaP/GaAs HBT power amplifier (PA) implemented using a proposed high- $Q$ single- and two-winding transformer.
Hyunjin Ahn   +3 more
doaj   +1 more source

Analysis of Winding Vibration Characteristics of Power Transformers Based on the Finite-Element Method

open access: yesEnergies, 2018
The winding is the core component of a transformer, and the technology used to diagnose its current state directly affects the operation and maintenance of the transformer.
Xiaomu Duan   +4 more
doaj   +1 more source

Experimental studies on power transformer model winding provided with MOVs

open access: yesJournal of Electrical Systems and Information Technology, 2017
Surge voltage distribution across a HV transformer winding due to appearance of very fast rise time (rise time of order 1 μs) transient voltages is highly non-uniform along the length of the winding for initial time instant of occurrence of surge.
G.H. Kusumadevi, G.R. Gurumurthy
doaj   +1 more source

Research on mechanical fault diagnosis method of power transformer winding

open access: yesThe Journal of Engineering, 2018
Today, the accuracy of the fault mechanical diagnosis of transformer winding is low and the fault types cannot be judged, this study proposes a machine condition diagnosis method of transformer winding based on the combination of short-circuit reactance ...
Zhang Bin   +4 more
doaj   +1 more source

Application of operational modal analysis to investigate transformer vibration patterns

open access: yesIET 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   +3 more
doaj   +1 more source

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

open access: yesJournal 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   +5 more
doaj   +1 more source

A ripple reduction method for a two stages battery charger with multi-winding transformer using notch filter [PDF]

open access: yes, 2017
This paper presents a two-stage battery charger consisting of a bridgeless Totem-pole power factor correction (TP-PFC) circuit and a full bridge converter with a multi-winding transformer.
Allanf, Peter   +5 more
core   +2 more sources

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

open access: yesE3S 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   +3 more
doaj   +1 more source

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