This paper presents the modeling and simulation of a proton exchange membrane fuel cell (PEMFC) generation system for off-grid and on-grid operation and configuration. A fuel cell DG system consists of a fuel cell power plant, a DC/DC converter and a DC/AC inverter. The dynamic model for fuel cell array and its power electronic interfacing are presented also a multi-input single output (MISO) D...

In this paper, several optimum structures of a cascaded multilevel inverter is proposed. This optimization is based on generation a constant number of output voltage levels by using minimum number of power switches or dc voltage sources or minimum amount of blocked voltage by power switches. In addition, the optimum structure for a constant number of dc voltage sources by using minimum number o...

Inverters in microgrids (MGs) face significant challenges during their parallel operations, such as accurate power sharing, deviations system voltage magnitude and frequency, imbalance between generation load demand. To solve these technoeconomic challenges, hierarchical control structures are implemented MGs. The structure consists of three layers primary, secondary, tertiary controls. approac...

Microgrids (MG) are a new and innovative concept in modern distribution networks. Several challenges associated with the operation control of MG Active reactive power sharing among energy resources interfaced through electronic conversion stages is major challenge. Although active can be achieved under varying scenarios, between distributed generation units difficult to achieve. This paper pres...

The aim of this paper is to evaluate the technical feasibility and aspects related to use, a Fuel Cell based Distributed Generation (FC-DG) in the residential singlephase applications with premium voltage quality. The paper presents a new topology of buck-boost inverter, where this single stage transformer-less inverter is employed to energize the residential load. With this new topology, the p...