Performance optimization, system reliability and operational efficiency are key characteristics of smart grid systems. In this paper a novel model of smart grid-connected PV/WT hybrid system is developed. It comprises photovoltaic array, wind turbine, asynchronous (induction) generator, controller and converters. The model is implemented using MATLAB/SIMULINK software package. Perturb and obser...

Maximum power point trackers (MPPTs) play a vital role in photovoltaic (PV) systems because they increase the eff iciency of the solar photovoltaic system by increasing the power output. MPPT algorithms are necessary because PV arrays have a non linear voltage-current characteristic with a unique point w here the power produced is maximum. The output pow er from the solar panel varies w ith sol...

This paper deals with a study of a maximum power point tracking (MPPT) technique based on the Particle Swarm Optimization (PSO) method, which is applied to a single-phase grid-tied photovoltaic system. Since photovoltaic panels have nonlinear voltage-current characteristic curves, when they are submitted to partial shading conditions, it is possible appear distinct local and global maximum powe...

A graphical interactive software training system as disclosed comprising a host computer sub-system operatively connected to a graphic computer sub-system providing training courses for use by a human operator. The training system functions without reference to a control program. It includes a series of stand-alone and isolated pictures having command functions embedded thereon requiring · an i...

Abstract In this paper, the performance of a permanent magnet synchronous generator (PMSG)-based wind energy conversion system (WECS) supplied to an uncontrolled rectifier-fed boost converter (BC) interfaced with three-phase T-type three-level inverter (TLI) has been analysed. The proposed WECS involves three converters, namely rectifier that is used for from AC DC; BC by PMSG-fed enhance volta...

To improve the performance of recent perturb and observe (P&O) maximum power point tracking (MPPT) algorithms, an intelligent robust P&O (IR-PO) algorithm is investigated for variable-speed wind energy conversion systems (WECSs). The proposed IR-PO reduces search area (MPP) by using optimal hypothetical position generator speed. Initially, assesses speed via a simple estimation (WSE) which adop...

In this paper, a dual perturb and combine algorithm is proposed which consists in producing the perturbed predictions at the prediction stage using only one model. To this end, the attribute vector of a test case is perturbed several times by an additive random noise, the model is applied to each of these perturbed vectors and the resulting predictions are aggregated. An analytical version of t...

<span>In this paper, a photovoltaic (PV) fuzzy maximum power point tracking (MPPT) method optimized by the chimp algorithm is presented. The logic controller (FLC) of seven triangular membership functions (MFs) used. optimization fitness function composed transient and steady-state indices under different irradiation temperature operating conditions. By using MATLAB package, performance e...