Results 151 to 160 of about 181,114 (210)

Locating short-circuit faults in underground networks

2011 IEEE Industry Applications Society Annual Meeting, 2011
In power distribution networks, impedance short-circuit faults are hard to detect in their incipient stage, as the fault currents may not be large enough to trip circuit breakers. In this paper, we summarize our research activities in short-circuit fault localization in underground power distribution networks. First, a simulation testbed was built.
Jin Zhou 0005, Bulent Ayhan, Chiman Kwan, O. D. Limaye, M. Lu, W. Lee   +5 more
openaire   +1 more source

On the Numerical Complexity of Short-Circuit Faults in Logic Networks

IEEE Transactions on Computers, 1985
The problem of estimating the number of all possible multiple short circuit faults in a network with a given number of lines is settled in this correspondence. A new combinatorial number, namely an associated Bell number B'(r), which enumerates the number of possible partitions of a set \(\{\) 1,2,\(\cdot \cdot \cdot,r\}\) with certain constraints, is ...
Bhabani P. Sinha, Bhargab B. Bhattacharya   +1 more
openaire   +2 more sources

Short-Circuit Fault Detection Observer Design in a PMSM

IEEE Transactions on Aerospace and Electronic Systems, 2018
This paper explores detecting interturn short-circuit (ITSC) faults in surface permanent magnet synchronous machines (SPMSM) while simultaneously estimating the (typically large) fault current to determine if operation is within thermal limits. ITSC faults are caused by electrical insulation failures in the stator windings and can lead to shorts to ...
Richard T. Meyer, Raymond A. DeCarlo, Scott C. Johnson, Steven D. Pekarek   +3 more
openaire   +1 more source

Severity Estimation of Interturn Short Circuit Fault for PMSM

IEEE Transactions on Industrial Electronics, 2019
This paper presents a novel method to estimate the number of shorted turns in a permanent magnet synchronous machine (PMSM) following the detection of interturn short-circuit (ITSC) fault and its location. In this proposed method, PMSM is excited through a low sinusoidal voltage at standstill condition to obtain the winding resistance and synchronous ...
Yuan Qi, Emine Bostanci, Mohsen Zafarani, Bilal Akin   +3 more
openaire   +1 more source

A Comprehensive Analysis of Short-Circuit Current Behavior in PMSM Interturn Short-Circuit Faults

IEEE Transactions on Power Electronics, 2018
This paper presents a detailed analysis of short-circuit current behavior during interturn short-circuit faults in permanent magnet synchronous machines (PMSMs) by considering the short-circuit contact resistance. For this purpose, an finite element analysis (FEA)-based equivalent circuit model is developed to understand the circulating current ...
Yuan Qi, Emine Bostanci, Vigneshwaran Gurusamy, Bilal Akin   +3 more
openaire   +1 more source

Diagnosis of Short-Circuit Faults in Combinational Circuits

IEEE Transactions on Computers, 1974
Most work on diagnosis of digital circuits has concentrated on the model of stuck-type faults. Although these faults are probably the most important class of faults, other types of faults do occur in practice and the occurrence of these other faults may affect the diagnosis of stuck-type faults.
openaire   +1 more source

Fault Tolerant Permanent Magnet Drives: Operating Under Open-circuit and Short-circuit Switch Faults

KMUTNB International Journal of Applied Science and Technology, 2014
A series architecture providing a fault tolerant drive is proposed. The architecture includes one or two DC sources, two voltage source inverters and a PMSM. Three different operating modes are considered: normal mode, open-circuit degraded mode and short-circuit degraded mode.
Shamsi-Nejad, Mohammad-Ali, Nahid-Mobarakeh, Babak, Pierfederici, Serge, Meibody-Tabar, Farid   +3 more
openaire   +2 more sources

Fault modelisation of external shorts in CMOS circuits

Proceedings of 1993 IEEE 2nd Asian Test Symposium (ATS), 2002
As the density of VLSI CMOS circuits increases, external shorts are expected to become a very important failure. This paper analyzes the electrical behavior of static CMOS gates with external shorts. The fault modelization of such shorts is then considered in the context of functional testing.
M. Renovell, P. Huc, Y. Bertrand
openaire   +1 more source

Research on Ignition Characteristic of Short-Circuit Fault

Advanced Materials Research, 2013
Under voltage of 220V, this article has carried out ignition test of three categories of combustible substance including polyurethane foam, cotton cloth and newspaper by simulation of short-circuit fault of aluminum conducting wire, so as to get the characteristic parameters of ignition of combustible substance due to short-circuit bead at different ...
Bin Li, Ying Wu
openaire   +1 more source

A Review of Short-Circuit Fault Analysis and Novel Fault Detection Methods

2021
This paper proposes a comprehensive review of short circuit fault analysis. It presents the different definitions and classifications of faults. It then discusses both symmetrical and unsymmetrical faults in detail and provides the equations used to solve for the fault current during each of these faults.
Moayad Osman, Ibrahim O. Habiballah
openaire   +1 more source