Results 261 to 270 of about 3,457,300 (349)

Internal Combustion Engines Fault Diagnostics

2020
This article describes the methods of diagnosing internal combustion engines (ICE). The conclusion is drawn that the majority of modern methods and ICE diagnostic devices don’t solve fully a problem of determination of technical condition of the engine, often are labor-consuming and expensive. The choice of a method and mode of diagnosing of ICE on the
L. A. Galiullin, R. A. Valiev
openaire   +1 more source

Modeling transformer internal faults using Matlab

11th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.02CH37379), 2003
This paper describes a technique for modeling transformer internal faults using MATLAB. In this technique a model for simulating a two-winding-single-phase transformer is modified to be suitable for simulating an internal fault in one of the windings.
H.B. Elrefaie, A.I. Megahed
openaire   +1 more source

Paradigmatic Faults in International-Relations Theory

International Studies Quarterly, 2009
American scholars routinely characterize the study of international relations as divided between various Kuhnian “paradigms” or Lakatosian “research programmes.” Although most international relations scholars have abandoned Kuhn's account of scientific continuity and change, many utilize Lakatosian criteria to assess the “progressive” or “degenerative”
Patrick Thaddeus Jackson, Daniel H. Nexon   +1 more
openaire   +1 more source

Physical Modeling of Induction Internal Fault

Applied Mechanics and Materials, 2014
Features analysis of propagation for harmonic probing signal having spiral topology of ax symmetric conducting inductive structure is conducted. The structure has violations in the form of short circuit of adjacent coil’s turns. Visualization of the results obtained is represented involving Parawey fan to spatially display phase distortions during the ...
Galina Elgina, Evgeny Ivoylov, S.М. Slobodyan   +2 more
openaire   +1 more source

Average-Value Modeling of Diode Rectifier Systems Under Asymmetrical Operation and Internal Faults

IEEE transactions on energy conversion, 2018
Line-commutated rectifiers (LCRs) are extensively utilized in exciters of large electrical machines, ac–dc power systems of ships, vehicles, aircraft, and many other industrial applications.
S. Ebrahimi, Navid Amiri, Yingwei Huang, Liwei Wang, J. Jatskevich   +4 more
semanticscholar   +1 more source

Harmonic Analysis of the Currents in the Power Transformer Differential Protection Circuits in the Cases of External and Internal Faults

IEEE International Conference on Actual Problems of Electronics Instrument Engineering, 2018
The usage of the high-harmonic restraint is one of the most common ways to ensure the non-operation of the power transformer differential protection when a magnetizing current inrush occurs.
Mikhail A. Kuparev, I. Litvinov, Dmitry V. Baklanov   +2 more
semanticscholar   +1 more source

Internal fault simulation in synchronous machines

2000 Canadian Conference on Electrical and Computer Engineering. Conference Proceedings. Navigating to a New Era (Cat. No.00TH8492), 2002
This paper describes a synchronous machine model that can be used to simulate internal fault waveforms for power system protection studies. The need to develop the machine model in the direct phase domain is explained and a method to calculate the inductances involving the faulty windings is outlined using a four pole lap wound machine.
D.De S. Muthumuni, E. Dirks
openaire   +1 more source

Learning-Based Faulty State Estimation Using SOH-Coupled Model Under Internal Thermal Faults in Lithium-Ion Batteries

IEEE Transactions on Transportation Electrification
Estimating the state of charge (SoC), state of health (SOH), and core temperature under internal faults will significantly improve the battery management system’s (BMS’s) autonomy and accuracy in range prediction.
G. Vennam, A. Sahoo, G. Yen
semanticscholar   +1 more source

Detecting I/O and Internal Feedback Bridging Faults

IEEE Transactions on Computers, 1985
The testing of bridging faults (short circuits) has become increasingly important with the increasing density in VLSI chips. Yet very little work has been done in this area. In this correspondence, based on a two-state sequential machine model, we present the conditions for a circuit with feedback bridgings to oscillate and to exhibit stable sequential
Xu, Shiyi, Su, Stephen Y. H.
openaire   +1 more source

Spectral Fault Signatures for Internally Unate Combinational Networks

IEEE Transactions on Computers, 1983
A method is described for the derivation of fault signatures for certain classes or irredundant combinational networks. These signatures consist of a set of values derived from the network. Any stuck-at fault causes at least one of the values to change. The signatures provide complete fault detection for all single stuck-at faults.
Miller, D. M., Muzio, J. C.
openaire   +2 more sources