Results 11 to 20 of about 1,154,191 (288)
Ingeniería e Investigación, 2009 A negative sequence analysis in time domain was applied to fault detection of permanent magnet synchronous motors (PMSM). The fundamental components of the motor terminal currents were obtained using a Notch filter, based on which the negative se- quence
Jabid E. Quiroga
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Analysis and Compensation of Negative Phase-sequence for Traction Transformer
Kongzhi Yu Xinxi Jishu, 2014 It analyzed the characteristics of negative phase-sequence current for traction transformers with different connection types under different loads. The three-phase current asymmetry degree of traction transformers is serious under both traction load and ...
SHI Minghui +3 more
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International Transactions on Electrical Energy SystemsIn view of the fact that the influence of positive and negative sequence decomposition, which is widely used in positive and negative sequence decoupling control in control system, on the fault current calculation process is not deeply considered in the ...
Botong Li +4 more
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Kongzhi Yu Xinxi Jishu, 2013 This paper illustrated var and negative sequence comprehensive compensation principles of cascaded static var generator(SVG) with star-configuration. The mathematical expression of zero-sequence voltage was deduced, and subsequently zero-sequence voltage
XIONG Qiaopo, LUO An, ZENG Zhizhen
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Journal of Marine Science and EngineeringThe High Voltage Direct Current (HVDC) transmission technology employing modular multilevel converters (MMCs) can effectively enhance the transmission efficiency and stability of offshore wind farms, thereby aiding the promotion of large−scale ...
Xiaoning Xu +3 more
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Zhejiang dianli, 2023 In case of an asymmetrical fault in PV accessed system， the inverter will simultaneously control the outputs of positive and negative sequence currents.
XU Xiaochun +3 more
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VSC control strategy for HVDC compensating negative sequence and decaying DC components
Energy Reports, 2023 This paper proposes a voltage source converter (VSC) control strategy for the high voltage direct current (HVDC) transmission systems compensating the negative sequence and decaying DC (DDC) components. The mathematical model of the grid fault current is
Wu Yanwei +4 more
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Journal of Modern Power Systems and Clean Energy, 2021 This paper presents a controller model of asymmetric current injection for converter-interfaced generators suitable for root-mean-square (RMS) phasor-domain, fundamental-frequency, three-phase, and dynamic simulation tools.
Victor A.F. Almeida +2 more
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Unbalanced and Reactive Currents Compensation in Three-Phase Four-Wire Sinusoidal Power Systems
Applied Sciences, 2020 In an unbalanced linear three-phase electrical system, there are inefficient powers that increase the apparent power supplied by the network, line losses, machine malfunctions, etc.
Rafael Montoya-Mira +4 more
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Energies, 2022 An inter-turn fault (ITF) is one of the most frequent induction motor faults; thus, many previous works have studied its model and diagnosis. However, previous works, simplifying the specific distorted flux distribution by the ITF, presented induction ...
Seong-Hwan Im, Bon-Gwan Gu
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