Results 271 to 280 of about 470,664 (315)
Optimal low-depth quantum signal-processing phase estimation. [PDF]
Nat CommunDong Y, Gross JA, Niu MY.
europepmc +1 more source
Single-phase short-circuit torque of a synchronous machine
Electrical Engineering, 1932 This paper extends the analysis of synchronous machines previously published by Doherty and Nickle to include the calculation of torque due to single-phase short circuit. The torque is expressed as the sum of odd and even harmonic series which are simply related to those previously derived for the armature current. The effect of amortisseur windings is
C. A. Nickle +2 more
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An Improved Method of Incorporating Mutual Couplings in Single-Phase Short-Circuit Calculations
IEEE Transactions on Power Apparatus and Systems, 1970 A method of including mutual couplings in the zero- sequence Z matrix described by Riaz [1] has been adapted for use in single-phase-to-ground short-circuit studies of large power systems. The algorithm of this extension is detailed, and the computational advantages over earlier methods [2]?[4] are pointed out.
J. O. Storry, Homer E. Brown
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Research on short circuit operation mechanism and current limiting strategy of single phase inverter
2018 IEEE Applied Power Electronics Conference and Exposition (APEC), 2018 The output side of inverter short circuit to ground is an inevitable and severe work condition. In this paper, the operation mechanism of short circuit running is analyzed in detail. The inductor current waveform is analyzed quantitatively under the traditional double loop control.
Li Shixian +4 more
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Electric Power Components and Systems, 2003 This paper presents an impedance-based technique for the discrimination between inrush current and short-circuit current in single-phase transformers. The method is based on the simulation of the behavior of the impedance relay. A Hilbert transform is adapted for the numerical calculation of the impedance at the input terminals of the transformer ...
Mohammed Abo-Zahhad, Kamel Al-Tallaq
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Research of the possibility for limiting the currents of a single-phase short circuit in HV networks [PDF]
2020 12th Electrical Engineering Faculty Conference (BulEF), 2020 This article discusses the possibility of reducing the levels of single-phase short circuits in HV networks. Since over 80% of all short circuits are single-phase. The dimensional condition for the equipment in the HV switchgears is a three-phase short circuit, as a result of which the currents of single-phase short circuits are inadmissible to be ...
Daniel Dobrilov +2 more
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Single-phase short-circuit torque [PDF]
Electrical Engineering, 1932 The analysis of synchronous machines previously published by Doherty and Nickle is expanded in this article to include the calculation of torque due to single-phase short-circuit. The torque is expressed as the sum of odd and even harmonic series which are simply related to those previously derived for the armature current.
C. A. Nickle +2 more
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Digital diagnosis of short-circuit failures and reconfiguration of a single-phase VSI [PDF]
2017 IEEE Southern Power Electronics Conference (SPEC), 2017 This paper presents a short circuit (SC) fault diagnosis (FD) method for switches of a single-phase voltage source inverter (VSI) with fault-tolerant topology. From the diagnostic variables, the diagnostic rules are established through a digital procedure, and, consequently, the diagnostic method is performed with digital logic circuits.
Marcelo Godoy Simões +3 more
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