Regarding the advances in technology and anxieties around high and growing prices of fossil fuels, government incentives increase to produce cleaner and sustainable energy through distributed generations. This makes trends in the using microgrids which consist of electric demands and different distributed generations and energy storage systems. The optimum operation of microgrids with consideri...

This review-paper focuses on the latest development of modelling and control of grid connected photovoltaic energy conversion system. Modelling of photovoltaic systems include modelling of SPV array, power electronics inverter/converter based on MATLAB/SIMULINK. This present control algorithm of a three-phase and single phase grid-connected photovoltaic (PV) system including the PV array and th...

A photovoltaic cell converts the solar energy into the electrical energy by the photovoltaic effect. Solar cells are widely used in terrestrial and space applications. The photovoltaic cells must be operated at their maximum power point. The maximum power point varies with illumination, temperature, radiation dose and other ageing effects. In this paper, we present four models for a photovoltai...

ABSTRACT: This paper presents a dynamic simulation and analysis of the "Sierra de María" photovoltaic system (Almería, South East of Spain), which consists of two identical subsystems with: 80 kWp photovoltaic array, 1176 kWh lead-acid batteries device, 150 kVA PWM inverter and 200 kVA six pulse rectifier. The simulation and analysis of the whole photovoltaic "Sierra de María" system was made t...

This paper presents a robust sliding mode controller of DC-DC buck converter for renewable energy applications, such as photovoltaic systems in off-grid configurations. Photovoltaic configuration are exposed to significant variations input voltage and power loads. The proposed simple efficient method continuously updating the duty cycle pulse width modulation unit (PWM) converter. PWM is operat...

Short-term power prediction of the photovoltaic system is one of the effective means to reduce the adverse effects of photovoltaic power on the grid. Since the efficiency of the traditional support vector machine (SVM) prediction method is low, this paper proposes the SVM based on the parameter optimization method of quantum particle swarm optimization (QPSO), and then apply into the power shor...

2,4-Bis[4-(N,N-diisobutylamino)-2,6-dihydroxyphenyl] squaraine (SQ) was employed as a donor material in organic photovoltaic cells based on planar heterojunctions. We studied optical properties of SQ films, and discussed its photovoltaic performance via numerical fitting and simulation on the photovoltaic cells. Exciton diffusion length (LD) in SQ films (4.5 nm) derived from optical simulation ...

One might at first believe that knowledge of the photovoltaic effect is recent. In fact, we must go back to 1839 with the French physicist Edmund Becquerel who first discovered the photovoltaic effect. It was during the period between the second half of the 19th and the Second World War (1945) that scientific knowledge related to solar phenomena were mastered. Thus, in 1875, Werner von Siemens ...

In this study the photovoltaic system, which is a part of the hybrid system composed of solar and wind turbine also which is being planned to be settled at Söke Vocational School was examined. Primarily the photovoltaic system was settled in order to provide exterior lighting at Vocational school. The power of the photovoltaic system is 560Wp, and also it is able to provide exterior lighting fo...

Multilevel voltage source inverters offer several advantages compared to their conventional counterparts. By synthesising the AC output terminal voltage from several levels of voltages, staircase waveforms can be produced, which approach the sinusoidal waveform with low harmonic distortion, thus reducing filter requirements. The need of several sources on the DC side of the converter makes mult...