Results 221 to 230 of about 6,086 (266)

Detection of Interturn Short-Circuit Fault for PMSM With Simple Fault Indicator

IEEE Transactions on Energy Conversion, 2016
Interturn short-circuit fault is a kind of initial failure of the permanent magnet synchronous motor (PMSM) and serious consequences may be caused if it is left undetected. In this letter, a simple fault indicator is defined as the sum of the absolute values of amplitude differences between the stator currents, where the amplitudes of fundamental ...
Jun Hang, Shichuan Ding, Jianzhong Zhang, Ming Cheng, Wen Chen, Qunjing Wang   +5 more
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

Short Circuit Fault Tolerant System for Matrix Converter

8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016), 2016
The paper proposes a short circuit fault tolerant system for the conventional Matrix Converter (MC) to increase the immune capability of the MC against short circuit fault. In this paper, the short circuit fault in semiconductor switching device such as IGBT is analysed. When the short circuit fault arises, it is quickly detected, then IGBTs are softly
openaire   +1 more source

Analysis of Fault Recorder Data for Short-Circuit Current in a 500kV Busbar Short-Circuit Accident

Advanced Materials Research, 2011
The three-phase short-circuit fault of the 500 kV busbar of Waigaoqiao No.2 Power Plant was described, and the fault recorder data was analyzed for short-circuit current. The RMS of short-circuit current decaying fundamental frequency component, DC component and the attenuation time constant was obtained by Fourier transform, extrapolating with the ...
Wei Cao, Yong Sheng Wang, Bei Liu, Wei Wang   +3 more
openaire   +1 more source

Short circuit fault detection in two wire transmission line

2016 IEEE International Conference on the Science of Electrical Engineering (ICSEE), 2016
A new method for short circuit fault detection is proposed based on instantaneous voltage measurement and its derivatives. The telegraph equations are used to derive a transmission line transfer function and an exact analytical description of the short circuit signal propagating in the transmission line is obtained. The analytical solution was verified
Michael Suleymanov, Yosef Pinhasi, Asher Yahalom   +2 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

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, Steve Pekarek   +3 more
openaire   +1 more source

Calculation of transformer internal faults in short circuit analysis

2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2008
This paper presents a novel method of modeling internal faults in a power transformer. The method leads to a model which is compatible with commercial phasor-based software packages. Consequently; it enables calculation of fault currents in any branch of the network due to a winding fault of a power transformer.
G. Ghanavati, S. M. Kouhsari, A. Koochaki, M. Mahmoodan   +3 more
openaire   +1 more source

Short-Circuit Calculations for Multiline Switching and End Faults

IEEE Transactions on Power Apparatus and Systems, 1970
In the short-circuit study of a network with mutually coupled lines, complications in calculation are introduced by the consideration of line removals, additions, impedance changes, and end faults. The modification of Z-bus terms to include these network changes is facilitated by the new algorithms presented in this paper.
Tomas Dy Liacco, Kavuru Ramarao
openaire   +1 more source

A review on turn-turn short circuit fault management

2015 International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles (ESARS), 2015
Permanent Magnet (PM) machines are increasingly being used in safety critical systems in aerospace and automotive applications. In such applications, reliability and availability are key concerns. Numerous works have been presented in literature which take into account both system reliability and availability in the event of single fault within the PM ...
Puvan Arumugam, Chris Gerada, Tahar Hamiti, Christopher Hill, Serhiy Bozhko   +4 more
openaire   +1 more source