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Improved MPPT short-circuit current method by a fuzzy short-circuit current estimator
2011 IEEE Energy Conversion Congress and Exposition, 2011Several Maximum Power Point Tracking MPPT methods have been proposed looking for more efficient Photovoltaic (PV) system. Some of them are simple but imply low efficiency compared with more sophisticated method. The short-circuit current is a simple method to achieve the maximum power point based on the fact that the current at the maximum power point ...
Nelson Diaz, Adriana Luna, Oscar Duarte
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External impedance vs. short-circuit currents
Electrical Engineering, 1934Effects of external impedance on short-circuit currents in synchronous machines and in networks are discussed in this article. The material presented is not claimed to be new; its chief value lies in the confirmation of calculations by test results, which tends to increase confidence in formulas previously developed.
B. L. Robertson, T. A. Rogers
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Short-circuit current calculations for DC systems
Proceedings of 1994 IEEE Industry Applications Society Annual Meeting, 1996The aim of the paper is to describe the methods contained in the International Electrotechnical Commission (IEC) draft standard "Calculation of short-circuit currents in DC auxiliary installations in power plants and substations", and to test them using the dynamic computer simulation.
BERIZZI, ALBERTO +3 more
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Short circuits of alternating-current generators
Journal of the A.I.E.E., 1924In this paper, the author presents a physical conception and simple non-mathematical analysis of the short-circuit phenomena of alternating-current generators. Formulas are developed for the maximum instantaneous values of the armature and field short-circuit currents delivered by both single and polyphase generators, which are equipped with and ...
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Short-Circuit Currents of Synchronous Machines
Transactions of the American Institute of Electrical Engineers, 1925The importance of short-circuit forces in large alternators has warranted an investigation of them. The first step in this investigation, which is discussed in this paper, is the calculation of the short-circuit currents that produce them. The method of solution used is that of the assumption of zero resistance and constant flux linkages which has ...
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The short-circuited fluxgate output current
Journal of Physics E: Scientific Instruments, 1989The alternative coupling of short-circuiting the secondary coil of a fluxgate sensor by connecting it to the inverting input of a current amplifier is shown to have significant advantages over the more conventional unloaded or second-harmonic tuned voltage coupling.
F Primdahl +3 more
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Short-circuit currents and recovery voltages
Electrical Engineering, 1949FIELD tests were made on a 7,200/12,470Y-volt multigrounded rural distribution system to check fault current calculations and to investigate transient recovery voltages experienced as a consequence of clearing fault currents. Tests were also made using a miniature circuit representation of a rural distribution system in order to investigate the effect ...
W. H. Eason +3 more
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Short Circuit Current of Induction Generators
2007 IEEE International Symposium on Circuits and Systems (ISCAS), 2007This paper addresses the effect of distributed generators, specifically squirrel cage induction generators, on 3-Phi bolted short-circuit fault currents to make sure that they do not interfere with the interruption capability of circuit breakers. Results of a laboratory experiment, and simulation results for 16 different induction machines, including ...
T. Sulawa +5 more
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Effects of short-circuit currents
2005Calculation methods for the thermal and electromagnetic effects of short-circuit currents are dealt with IEC 61660-2, which is applicable to short-circuit currents in d.c. auxiliary installations in power plants and substations and IEC 60865-1, related to three-phase a.c. systems.
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Calculation of short-circuit currents
2011The current that flows through an element of a power system is a parameter that can be used to detect faults, given the large increase in current flow when a short-circuit occurs. For this reason, a review of the concepts and procedures for calculating fault currents will be made in this chapter, together with some calculations illustrating the methods
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