Results 21 to 30 of about 12,733,262 (289)

Characteristics and Control Strategy of Cascaded SVG with Star-configuration Considering Negative-sequence Compensation

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
doaj   +2 more sources

Fault characteristic analysis of photovoltaic inverter considering negative sequence control strategy

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, HUANG Tao, XIE Hua, ZHAO Qingchun   +3 more
doaj   +1 more source

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, Ou Jiajun, Su Tao, Wang Bo, Wu junming   +4 more
doaj   +1 more source

Phasor-domain Dynamic Model of Asymmetric Current Injection Controller for Converter-interfaced Generator

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, Glauco N. Taranto, Jose M. T. Marinho   +2 more
doaj   +1 more source

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, Pedro A. Blasco, José M. Diez, Rafael Montoya, Miguel J. Reig   +4 more
doaj   +1 more source

Study of Induction Motor Inter-Turn Fault Part I: Development of Fault Models with Distorted Flux Representation

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
doaj   +1 more source

Practical calculation of asymmetric short circuit current of DFIG connected to distribution network [PDF]

E3S Web of Conferences, 2020
In view of the existing complex analytic calculations of DFIG short-circuit current are hardly applied in engineering projects, a practical calculation of asymmetric short-circuit current of DFIG is proposed.
Fu Pengwu, Yang Dongwen, He Zhi, Duan Zhenfeng, Wang Dengmei   +4 more
doaj   +1 more source

Current limiting and negative differential resistance in indium oxide based ceramics [PDF]

, 2009
Indium oxide based ceramics with bismuth oxide addition were sintered in air in the temperature range 800-1300 ºC. Current-voltage characteristics of In2O3-Bi2O3 ceramics sintered at different temperatures are weakly nonlinear.
Bondarchuk, AN, Jones, Benjamin, A.B. Glot, A.N. Bondarchuk, Jones, BJ, Bondarchuk, A N, Glot, AB, R. Bulpett, Verma, N, Bulpett, R, Mazurik, SV, Mazurik, S V, B.J. Jones, Jones, B J, N. Verma, Mazurik, S.V., S.V. Mazurik, Glot, A B, Glot, A.B., Bondarchuk, A.N.   +19 more
core   +1 more source

The impact of internal asymmetry of induction motors on the supply network

Science, Technology and Innovation
This paper presents the impact of internal asymmetry in induction motors, such as short circuits, close circuits, stator impedance differences and rotor damage, on the supply network in the form of negative and zero-sequence currents, illustrating the ...
Janusz Petryna, Tomasz Kołacz, Grzegorz Aksamit, Dawid Kara   +3 more
doaj   +1 more source

Analysis of unbalanced clustered voltage and control strategy of clustered voltage balancing for cascaded H-bridge STATCOM

Journal of Modern Power Systems and Clean Energy, 2019
To explore the clustered voltage balancing mechanism of the cascaded H-bridge static synchronous compensator (STATCOM), this paper analyzes the causes of unbalanced clustered voltage. The negative-sequence current caused by the compensation of unbalanced
Yu Jin, Jianze Wang, Yiqi Liu, Xinagyu Sai, Yanchao Ji   +4 more
doaj   +1 more source