Results 21 to 30 of about 93,852 (297)
IET Power Electronics, 2021 Grid‐connected converters in distributed generation systems are required to operate under highly distorted voltage with a wide frequency range, and to provide active/reactive power information for ancillary services and power control. This paper presents
Sakda Somkun
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Frontiers in Energy Research, 2022 Asymmetrical working conditions of the utility grid introduce the large-amplitude negative-sequence component to the output current of the voltage source converter (VSC), causing power semiconductor devices to suffer from thermal fatigue and thermal ...
Liansong Xiong +8 more
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IEEE Open Journal of the Industrial Electronics Society, 2021 The growing relevance of voltage source converters (VSCs), and the deep impact they have on the development and maintenance of the electrical grid, increase the necessity of further research on how to deal with nonideal grid conditions from the VSCs ...
Pablo Montero-Robina +3 more
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Control of DFIG based wind generation systems under unbalanced network supply [PDF]
, 2007 This paper develops a dynamic model and control scheme for DFIG systems to improve the performance and stability under unbalanced grid conditions. A dynamic DFIG model containing the positive and negative sequence components is presented using stator ...
Wang, Yi, Xu, L.
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Energies, 2021 An optimal power flow algorithm for unbalanced three-phase distribution grids is presented in this paper as a new tool for grid planning on low voltage level. As additional equipment like electric vehicles, heat pumps or solar power systems can sometimes
Lukas Held +5 more
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Energy Reports, 2022 In the photovoltaic grid-connected power generation system, when proportional resonant (PR) control is adopted for the grid-side inverter in the two-phase stationary coordinate (αβ), there is a coupling problem between active power (P) and reactive power
Fuyun Wu +3 more
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A Generalized Index for Static Voltage Stability of Unbalanced Polyphase Power Systems including Th\'evenin Equivalents and Polynomial Models [PDF]
, 2019 This paper proposes a Voltage Stability Index (VSI) suitable for unbalanced polyphase power systems. To this end, the grid is represented by a polyphase multiport network model (i.e., compound hybrid parameters), and the aggregate behavior of the devices
Kettner, Andreas Martin, Paolone, Mario
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IET Power Electronics, 2023 This paper investigates space‐vector‐modulation (SVM) technique that uses only rotating space vectors to drive a direct matrix converter (DMC) with zero common‐mode voltage (CMV).
Luka Stanić +3 more
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Adaptive Vectorial Filter for Grid Synchronization of Power Converters Under Unbalanced and/or Distorted Grid Conditions [PDF]
, 2014 This paper presents a new synchronization scheme for detecting multiple positive-/negative-sequence frequency harmonics in three-phase systems for grid-connected power converters.
Carrasco Solís, Juan Manuel +4 more
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Flexible Power Regulation and Limitation of Voltage Source Inverters under Unbalanced Grid Faults
CES Transactions on Electrical Machines and Systems, 2022 This paper develops a flexible power regulation and limitation strategy of voltage source inverters (VSIs) under unbalanced grid faults. When the classical power theory is used under unbalanced grid faults, the power oscillations and current distortions ...
Peng Cheng +4 more
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