Results 61 to 70 of about 74,380 (202)
Algorithms for Coloring Quadtrees
, 1999 We describe simple linear time algorithms for coloring the squares of balanced and unbalanced quadtrees so that no two adjacent squares are given the same color.
Bern, Marshall W. +2 more
core +2 more sources
IEEE Open Journal of Circuits and SystemsGrid type energy storage has inertia support capability, and unbalanced grid voltage will cause grid type energy storage current fluctuation and active power fluctuation.
Li You +4 more
doaj +1 more source
Controlling the doubly fed induction generator based wind turbines during normal and disturbed grid voltage [PDF]
, 2016 This work presents an improved strategy in the field of predictive control (PC) of the doubly fed induction generator (DFIG). The proposed strategy applies four voltage vector in every period in order to have constant switching frequency and low current ...
Rodríguez Arribas, Jaime +2 more
core
Alone Self-Excited Induction Generators [PDF]
, 2016 In recent years, some converter structures and analyzing methods for the voltage regulation of stand-alone self-excited induction generators (SEIGs) have been introduced.
Doser, TL, Kesler, S
core +2 more sources
Power quality disturbances assessment during unintentional islanding scenarios. A contribution to voltage sag studies [PDF]
, 2019 This paper presents a novel voltage sag topology that occurs during an unintentional islanding operation (IO) within a distribution network (DN) due to large induction motors (IMs).
Bosch Tous, Ricardo +2 more
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Test of PV inverters under unbalanced operation
The Journal of Engineering, 2019 In the modern renewable energy system, recent years have seen a rise in the share of power being generated through photovoltaic (PV) plants. In the Danish power system, PV plants are mostly integrated in the medium- and low-voltage networks which are ...
Ziyu Wang +2 more
doaj +1 more source
On the Properties of the Compound Nodal Admittance Matrix of Polyphase Power Systems
, 2018 Most techniques for power system analysis model the grid by exact electrical circuits. For instance, in power flow study, state estimation, and voltage stability assessment, the use of admittance parameters (i.e., the nodal admittance matrix) and hybrid ...
Kettner, Andreas Martin, Paolone, Mario
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An easterly tip jet off Cape Farewell, Greenland. II: Simulations and dynamics [PDF]
, 2009 An easterly tip jet that occurred on 21 February 2007 off Cape Farewell, Greenland, is examined. In Part I of this article aircraft observations were described.
Barstad +28 more
core +1 more source
A Novel Sliding Mode Control Strategy of the Grid‐Connected Inverter Under Unbalanced Grid Voltage
IET Smart GridAs the actual grid voltage is not always balanced, the control strategy of the photovoltaic grid‐connected inverter significantly affects the quality of the current injected into the grid.
Shiqi Wang +7 more
doaj +1 more source
Journal of Modern Power Systems and Clean Energy, 2018 The admittance is a strong tool for stability analysis and assessment of the three-phase voltage source converters (VSCs) especially in grid-connected mode.
Yang CEN, Meng HUANG, Xiaoming ZHA
doaj +1 more source