In this paper author discussed PI and fuzzy controllers with the three phase inverter concept and this converter connected to induction motor drive as load. This presents a unified control strategy that enables both islanded and grid-tied operations of three-phase inverter in distributed generation, with no need for switching between two corresponding controllers or critical islanding detection...

In recent years, with the widespread use of non-linear loads power electronic devices associated penetration various renewable energy sources, distribution system is highly affected by harmonic distortion caused these sources. Moreover, inverter-based distributed generation units (DGs) (e.g., photovoltaic (PV) and wind turbine) that are integrated into systems, considered as significant sources...

An intrinsically stable microgrid, operated by inverter-interfaced distributed energy resources (I-DERs) is introduced in this paper. The microgrid built upon a systematic design method, which adapted from the operation of synchronous machine (SM). proposed method analogizes dynamics dc-link I-DERs to rotor generators (SGs) and utilizes capacitor as storage. Thus, mechanism relaxes battery usag...

The recent trend of distributed generation leads to several issues regarding power quality and energy efficiency. To meet the increased demand of electricity services and to increase service quality the current power grid structure should be controlled in such a way that distributed generation could be easily connected to it. The various services are becoming challenging concern to elegantly in...

Abstract The emergence of distributed generators has changed the operational mode and fault characteristics distribution network, in a way which can severely influence protection. This paper proposes d-axis-based current differential protection scheme. d-axis inverter-interfaced synchronous are analyzed. criterion using sampling values component is then constructed. Compared to conventional pha...