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An asymmetrical fault current calculation method of synchronverter
2019 IEEE Applied Power Electronics Conference and Exposition (APEC), 2019Synchronverter is subjected to a large inrush current when a short-circuit fault occurs, which may cause serious damage to the inverter and utility grid. Therefore, it is very important to figure out the fault current characteristics of synchronverter, and it is helpful for the study of restraining the fault inrush current.
Lili He, Wen Huang, Zhikang Shuai
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Closed-Form Determination of the Impedance Locus Plot of Fault Current Limiters: Asymmetrical Faults
IEEE Transactions on Power Delivery, 2020Closed-form determination of fault current limiter (FCL) impedance for symmetrical faults was reported previously using a mathematically rigorous method. In this paper, extensions of the method to asymmetrical faults are presented. Single line-to-ground faults and line-to-line faults are studied.
Shayan Behzadirafi, Francisco De León
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IEEE Transactions on Industrial Electronics, 2023
In this article, distinctive fault characteristics of converter-interfaced renewable energy sources (CIRESs) will result in the misoperation of traditional distance relays. To handle this issue, a new fault coordination control method is proposed to ensure the correct operation of distance relays.
Zhe Yang 0007 +4 more
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In this article, distinctive fault characteristics of converter-interfaced renewable energy sources (CIRESs) will result in the misoperation of traditional distance relays. To handle this issue, a new fault coordination control method is proposed to ensure the correct operation of distance relays.
Zhe Yang 0007 +4 more
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Modeling and Testing Comparison Faults of TCAMs with Asymmetric Cells
2009 27th IEEE VLSI Test Symposium, 2009Ternary content addressable memory (TCAM) is a key component in various applications for its fast lookup operation. Symmetric and asymmetric TCAM cells are two widely used cells for implementing a TCAM array. This paper presents several comparison fault models of TCAMs with asymmetric cells based on electrical defects.
Yong-Jyun Hu +2 more
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Control of a trapezoidal EMF PMSG under asymmetrical faults
2015 IEEE 24th International Symposium on Industrial Electronics (ISIE), 2015A new control of a grid connected permanent magnet synchronous generator (PMSG) for wind turbines based on the Instantaneous Power Theory (pq Theory) is proposed. Given the PMSG trapezoidal electromotive force (EMF), the proposed pq control is advantageous over those based on the Park transformation, because it reduces the electromagnetic torque ripple
Josmar Ivanqui +3 more
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A fault diagnosis algorithm for asymmetric modular architectures
IEEE Transactions on Computers, 1981Summary: This paper is devoted to the analysis of an algorithm for the automatic fault diagnosis of asymmetric modular networks. The network model used is the one proposed by [\textit{F. P. Preparata} et al., IEEE Trans. Electron. Comput. 16, 848--854 (1967; Zbl 0189.16904)], the faults are assumed to be solid, and the Hakimi-Amin t-diagnosability ...
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Transient Characteristics of Synchronverters Subjected to Asymmetric Faults
IEEE Transactions on Power Delivery, 2019Since the large fault inrush current threatens the safety of power electronic devices, the synchronverter should have the fault ride-through (FRT) capability and should be equipped with a reliable protection system. Therefore, it is important to study the transient fault characteristics of the synchronverter and propose its fault current estimation ...
Lili He +5 more
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A fast simulation model of PMSG with asymmetric control during an asymmetric grid fault
2016 China International Conference on Electricity Distribution (CICED), 2016This paper presents a fast simulation method of PMSG, which adopts positive and negative sequence current separate control strategy during an asymmetric grid fault. Based on analysis of fault characteristics, the asymmetric control strategy is developed in PSCAD, aiming to alleviate the adverse effects on converter and grid during an asymmetric grid ...
Guobing Song +4 more
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Analysis and control of Twin Wind Turbine subject to asymmetric fault
2020 IEEE Conference on Control Technology and Applications (CCTA), 2020The concept of healthy twin wind turbines is recently studied in the literature. Control in the dq-frame, based on the symmetric of the healthy system, has been proposed. Nevertheless the robustness of such control with respect to asymmetric faults has not been studied.
Mariem Makni +5 more
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The control of the asymmetric ground fault current of the line
2011 International Conference on Advanced Power System Automation and Protection, 2011During the asymmetric ground fault, the relationship of the current through the line with the inserting voltage and the inserting inductance is analyzed and a novel control method for the asymmetric ground fault current is presented. When the ground fault occurs, the fault current can be controlled to zero and the current through the fault line can be ...
Yu Jiang +5 more
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