Microgrids have played an important role in distribution networks during recent years.  DC microgrids are very popular among researchers because of their benefits. Protection is one of the significant challenges in the way of microgrids progress. As a result, in this paper, a fault detection and location scheme for DC microgrids is proposed. Due to advances in Artificial Intelligence (AI) and s...

The use of renewable energy sources (RESs) is a need global society. This editorial, and its associated Special Issue “Grid-Connected Renewable Energy Sources”, offer compilation some the recent advances in analysis current power systems composed after high penetration distributed generation (DG) with different RESs. focus on both new control configurations novel methodologies for optimal place...

Received Jul 8, 2014 Revised Oct 6, 2014 Accepted Oct 20, 2014 Renewable power generation using photovoltaic is very interesting to be developed to deal with the problems of conventional energy sources and environmental issues. The photovoltaic power generation can operate both in stand-alone and grid-connected operations. This paper presents an application of the single-phase five-level common...

The increasing demand of electric power necessitates the establishment of new generating stations. Wind energy conversion system (WECS) is more attractive due to its mature and clean aspects. During last decades the variable speed wind turbine concept has been increasingly receiving attention due to the fact that it is more controllable and efficient, and has good power quality. The wind turbin...

this paper presents a control strategy for fuel cell/energy storage power generation system during voltage sag conditions. the hybrid dc power sources are connected to grid using power electronic converters include dc-dc converter and grid connected voltage source inverter. the power from hybrid power sources is controlled during voltage sag by designing of control strategy for dc-dc converter....

1. Project Goals FREEDM system consists of SST, FID, DESD, DRER, and DGI. The SST-based microgrid system can have many functionalities using communication capability provided by DGI and other components such as DESD, DRER, and DESD. A new type of islanding and seamless reconnection strategies are developed to cope with the case when the utility grid is disconnected and to increase stability and...