Results 41 to 50 of about 11,542 (214)

Bidirectional DC/DC and SOC Drooping Control for DC Microgrid Application [PDF]

Electronics, 2020
In DC microgrids, distributed energy storage plays a key role in stabilizing the DC bus voltage. The bidirectional DC/DC converter in the distributed energy storage system should be designed according to the voltage level and electromagnetic isolation requirements, and multiple energy storage units should be coordinated for load current distribution ...
Chunjiang Zhang, Pengcheng Li, Yingjun Guo   +2 more
openaire   +1 more source

Techno‐economic and environmental assessment of a hybrid renewable energy system for a date molasses factory in Iraq using HOMER Pro

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Iraq currently faces a significant electricity deficit estimated at approximately 18 000 MW, resulting in frequent and sometimes prolonged power outages that disrupt both economic activities and social life. The widening gap between energy supply and demand, combined with environmental concerns associated with fossil fuel consumption ...
Safaa Malik Abbas, Hend Dakhel Alhassany, David Vera, Francisco Jurado   +3 more
wiley   +1 more source

An Overview and Minimum Fault Ramp Rate Analysis of Impedance Based Circuit Breaker Topologies

IEEE Access, 2023
In the advent of recent developments in a higher efficiency Direct Current (DC) system, the DC microgrid proves to be a permissible future to match the load demand with distributed power generation.
J. Mohamed Abdullah, V. Sumathi
doaj   +1 more source

Nonisolated High Step‐Up DC‐DC Ćuk Converter Based on Coupled Inductors

International Journal of Circuit Theory and Applications, EarlyView.
A nonisolated high step‐up DC‐DC Ćuk converter based on coupled inductors and voltage multiplier cell (VMCs) is proposed and thoroughly assessed. ABSTRACT This work presents a nonisolated high step‐up DC‐DC Ćuk converter, specifically designed for nanogrid applications.
Manuel de Oliveira Vasconcelos Júnior, Francilino Carneiro de Araújo, Antonio Alisson Alencar Freitas, Marcus Vinicius Silverio Costa, Fernando Lessa Tofoli, Fernando Luiz Marcelo Antunes, Edilson Mineiro Sá Jr., Kleber Cesar Alves de Souza   +7 more
wiley   +1 more source

Advanced Virtual Impedance for Power‐Sharing Improvement in Microgrids Using Different SOGI Methods: A Comparative Study

Energy Technology, EarlyView.
Advanced virtual impedance control integrating multiple second‐order generalized integrator (SOGI) variants—SOGI, ESOGI, MSOGI, and DSOGI—enhances power and harmonic sharing accuracy in islanded microgrids. The comparative study quantifies performance–complexity trade‐offs, demonstrating up to 65% total harmonic distortion (THD) reduction and improved ...
Camelia Ait Hammouda, Abdellah Benallal, Rafik Bradai, Adrian Ilinca   +3 more
wiley   +1 more source

Coordinated AC/DC microgrid optimal scheduling [PDF]

2017 North American Power Symposium (NAPS), 2017
This paper proposes a coordinated optimal scheduling model for hybrid AC/DC microgrids. The objective of the proposed model is to minimize the total microgrid operation cost when considering interactions between AC and DC sub-systems of the microgrid network.
Alanazi, Abdulaziz, Lotfi, Hossein, Khodaei, Amin   +2 more
openaire   +2 more sources

Techno‐Economic Analysis of Solar‐Wind Hybrid Systems for Green Hydrogen Production in South Africa, KwaZulu‐Natal Province

Energy Science &Engineering, EarlyView.
ABSTRACT Rising global energy demand and the climate crisis have intensified the pursuit of renewable energy, with green hydrogen emerging as a key alternative to fossil fuels. South Africa, heavily reliant on coal‐based energy, faces pressure to decarbonize and transition to a green economy.
Sandile Mtolo, Sudesh Rathilal, Nomcebo Happiness Mthombeni, Katleho Moloi, Emmanuel Kweinor Tetteh   +4 more
wiley   +1 more source

High‐Fidelity Simulation‐Driven Control Framework for Robust Grid Integration of Renewable Energy Systems

Energy Science &Engineering, EarlyView.
This work proposes a high‐fidelity, simulation‐driven control framework for robust grid integration of hybrid PV–wind systems using a modular, hierarchical multi‐loop architecture with adaptive decision logic. The framework coordinates power, DC‐link voltage, and grid currents under fast load and generation changes, enabling safe exploration of extreme
Wulfran Fendzi Mbasso, Ambe Harrison, Idriss Dagal, Pradeep Jangir, Zhe Liu, Aseel Smerat   +5 more
wiley   +1 more source

Off‐Grid Solar Systems: An Experimental Work and Systematic Techno‐Economic Analysis

Energy Science &Engineering, EarlyView.
In the study mentioned above, experimental monitoring and economic evaluation of two off‐grid PV systems were conducted using a low‐cost data logger. The results suggest that basic DC systems are economically feasible compared to grid power, but that AC systems require further cost‐cutting to achieve financial viability.
MD Shouquat Hossain, YuHao Liu, DingXi Xiang, Jing Liu, S. M. Rezaul Karim, Laveet Kumar, Zafar Said, Mohammad A. Alim   +7 more
wiley   +1 more source

Feasibility Study and Optimal Placement of Solar Power Plants Using Binary Genetic Algorithm

Energy Science &Engineering, EarlyView.
This study introduces an integrated optimization framework using a binary genetic algorithm (BGA) for optimal siting and sizing of two solar plants (865 and 739 kWp) in Karaj, Iran. The BGA outperformed conventional methods, achieving a 24.3% reduction in power losses and enhanced voltage stability.
Mehrab Shahbazi, Reza Eslami
wiley   +1 more source