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Transient Modeling and Analysis of VSC Based DC Microgrid During Short Circuit Fault

open access: yesIEEE Access, 2019
The application of distributed renewable energy (DER) drives the development of DC microgrid based on voltage source converter (VSC). And short circuit fault protection is a significant challenge for the development of VSC based DC microgrid.
Heng Nian, Liang Kong
doaj   +1 more source

Improved Dynamic Response of DC Microgrid Under Transient Condition Using Inertia by Virtual Generation

open access: yesIEEE Access, 2021
This article proposes new control architecture to improve the dynamic performance of DC microgrid by enhancing system inertia. The DC microgrids are gaining more importance due to the controlled and combined operation of multiple distributed energy ...
Rohit R. Deshmukh, Makarand S. Ballal
doaj   +1 more source

Artificial Neural Network Based Fault Detection and Fault Location in the DC Microgrid [PDF]

open access: yes, 2016
In DC microgrid, power electronic devices may suffer from over current during short circuit faults. Since DC bus systems cannot sustain high fault currents, suitable protection strategy in DC lines is indispensable.
Cheng Wang   +14 more
core   +1 more source

Suppression of Second-Order Harmonic Current for Droop-Controlled Distributed Energy Resource Converters in DC Microgrids [PDF]

open access: yes, 2020
Droop-controlled distributed energy resource converters in dc microgrids usually show low output impedances. When coupled with ac systems, second-order harmonics typically appear on the dc-bus voltage, causing significant harmonic currents at the ...
Caldognetto, Tommaso   +3 more
core   +1 more source

Stabilisation strategy based on feedback linearisation for DC microgrid with multi-converter

open access: yesThe Journal of Engineering, 2019
Power electronic converters have been widely used in power system and the stability issues of DC microgrid with converters will be discussed in this study. Firstly, an equivalent circuit and the corresponding state space model for DC microgrid with DC–DC
Xuanying Shao, Jian Hu, Zhongtian Zhao
doaj   +1 more source

Improved Mode-Adaptive Droop Control Strategy for the DC Microgrid

open access: yesIEEE Access, 2019
The mode-adaptive droop control (MADC) strategy enables bus voltage regulation and power sharing between the distributed energy resources (DERs) in the direct current (dc) microgrid without communication systems.
Jafar Mohammadi, Firouz Badrkhani Ajaei
doaj   +1 more source

Hybrid Wind/PV/Battery Energy Management-Based Intelligent Non-Integer Control for Smart DC-Microgrid of Smart University

open access: yesIEEE Access, 2021
Global environmental changes, nuclear power risks, losses in the electricity grid, and rising energy costs are increasing the desire to rely on more renewable energy for electricity generation.
A. Alahmadi   +6 more
semanticscholar   +1 more source

Adaptive Time Delay Strategy for Reliable Load Shedding in the Direct-Current Microgrid

open access: yesIEEE Access, 2020
This paper proposes a practical and reliable decentralized load shedding strategy to protect the integrity of the direct-current (DC) microgrid. The proposed strategy utilizes time delays that automatically adapt to the DC microgrid operating conditions ...
Jafar Mohammadi, Firouz Badrkhani Ajaei
doaj   +1 more source

Equivalent Modeling of Microgrids Based on Optimized Broad Learning System

open access: yesEnergies, 2021
The DC microgrid is an important structure of microgrids. Aiming at the problem of the grid-connected DC microgrid modeling, a grid-connected DC microgrid equivalent modeling method based on the optimized Broad Learning System (BLS) is proposed.
Lin Wang, Anke Xue
doaj   +1 more source

P-resonant control for the neutral point of three phase inverter [PDF]

open access: yes, 2014
In this project, a Proportional resonant (PR) current controller is proposed to maintain a balanced neutral point for a three-phase four wire inverter, which can be used in microgrid applications. The neutral-point circuit consists of a conventional
Omar Aashour, Omar Ali
core   +1 more source

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