Electromagnetic interference effects due to line reactor coil-to-coil short circuits

2004 ◽  
Author(s):  
R.H. Potter
Keyword(s):  
Electromagnetic Interference ◽  
Interference Effects ◽  
Short Circuits

scholarly journals OVERVIEW OF ELECTROMAGNETIC INTERFERENCE ISSUES IN AIRCRAFT

2018 ◽  
Vol 6 (2) ◽  
pp. 53-59
Author(s):  
Abhishek Kumar
Keyword(s):  
Wireless Communication ◽  
Electromagnetic Interference ◽  
Communication Systems ◽  
Electromagnetic Induction ◽  
External Source ◽  
Wireless Communication Systems ◽  
Radio Frequency Interference ◽  
Interference Effects ◽  
Electrostatic Coupling ◽  
Modern Era

In the modern era, due to several confliction or uncertainty in the aircraft, Electromagnetic Interference (EMI) or Radio Frequency Interference (RFI) issues occurred, frequently. The main reason behind it several disturbances generated by an external source which imitate wireless circuits with the help of conduction, electrostatic coupling, and electromagnetic induction. These disturbances may decrease the performance of the circuits or sometimes fully stop the operations. Main challenges in EMI are modeling and simulation for modern and future wireless communication systems and networks taking into account nonlinear interference effects. In this paper, overviews of several issues of EMI or RFI are illustrated.

Efficient reduction of electromagnetic interference effects in operational amplifiers

2007 ◽  
Vol 43 (2) ◽  
pp. 84 ◽  
Author(s):  
C. Walravens ◽  
S. Van Winckel ◽  
J.M. Redouté ◽  
M. Steyaert
Keyword(s):  
Electromagnetic Interference ◽  
Operational Amplifiers ◽  
Interference Effects ◽  
Efficient Reduction

scholarly journals Improvements on the Carrier-Based Control Method for a Three-Level T-Type, Quasi-Impedance-Source Inverter

Electronics ◽  
2019 ◽  
Vol 8 (6) ◽  
pp. 677 ◽  
Author(s):  
Fermín Barrero-González ◽  
Carlos Roncero-Clemente ◽  
María Isabel Milanés-Montero ◽  
Eva González-Romera ◽  
Enrique Romero-Cadaval ◽  
...  
Keyword(s):  
Electromagnetic Interference ◽  
Pulse Width Modulation ◽  
Control Method ◽  
Short Circuit ◽  
Harmonic Distortion ◽  
Line Voltage ◽  
Photovoltaic Array ◽  
Blocking Voltage ◽  
Three Phase ◽  
Short Circuits

The boost feature that characterizes Z-source and quasi-Z-source converters is usually achieved by means of a proper insertion of short-circuit states in the full DC-link. In this work, a novel pulse width modulation carrier-based strategy for a three-phase, three-level T-type, quasi-Z-source inverter is introduced, based on the addition of alternate short-circuits in the two halves of the DC-link bus. This technique achieves better performance, less electromagnetic interference, and lower harmonic distortion of the output line-to-line voltage compared to the traditional methods based on the full DC-link shoot-through. At the same time, generating the switching states is to easy implement. The proposed strategy permits the use of electronic devices with lower blocking voltage capability, thus improving converter reliability, size, and cost. The new method may be implemented in another multilevel inverter with an impedance-source network as well. A comprehensive simulation study is performed in order to validate the adopted method, with different inverter input voltages, which is taken as representative of a photovoltaic array. Comparisons are conducted with conventional strategy insertions using the same topology in order to show the improvements achieved.

scholarly journals Simulation of Electromagnetic Coupling on Pipelines close to Overhead Transmission Lines: A Parametric Study

2017 ◽  
Vol 1 (2) ◽  
pp. 116 ◽  
Author(s):  
A. H. Al-Badi ◽  
H. M. Al-Rizzo
Keyword(s):  
Transmission Lines ◽  
Electromagnetic Interference ◽  
Electromagnetic Coupling ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Separation Distance ◽  
Interference Effects ◽  
Voltage Level ◽  
Oil Pipelines ◽  
Water Gas

Electromagnetic interference effects caused by electric power lines on neighboring metallic utilities such as water, gas or oil pipelines became a major concern due tosignificant increase in the load and short circuit current levels needed to satisfy the load requirements. Another reason for increased interference levels originates from the environmental concerns, which impose on various utilities the obligation to share common corridors. This paper presents three different scenarios of a pipeline in which all types of electromagnetic interferences (coupling) will be investigated and their effects on the pipeline will be predicted. The level of the calculated voltage, owing to each type of coupling, depends on different factors (voltage level, length of parallelism, separation distance, soil resistivity, load current magnitude and pipeline coating). The effects of these factors are discussed; some factors such as the fault current level, separation distance and soil resistivities are found to exhibit a large influence on the pipeline voltage. To the best of the authors’ knowledge, the comprehensive analyses presented in this paper considering all types of interferences have not yet been publishedelsewhere.

Sign in / Sign up

Export Citation Format

Share Document