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Taking double stage type three phase photovoltaic grid-connected generation system as the research object, the equivalent model of photovoltaic cells, the maximum power point tracking (MPPT) technology and the control strategy of three-phase grid connected inverter are analyzed in this paper. On the basis of the theoretical analysis, the double closed-loop vector control of the double stage type three-phase...
Nowadays, thermo electrical (TE) modules are increasingly popular because their prices go down and new potential applications have emerged. This paper presents modeling, simulation, and control of the power generation of a thermoelectric generator (TEG) using Matlab/Simulink. To get the aim of maximizing the power from the TEG, an MPPT controller based on sliding mode control (SMC) was implemented...
This paper presents a novel multifunctional push-pull converter for micro-inverter applications, used to interface photovoltaic (PV) modules and an battery energy storage system with the power grid (PG). The push-pull DC-DC power converter requires only two switching devices. It uses a specific algorithm to control the batteries charging process, preserving their lifetime, and also to operate as maximum...
In this paper, the single-stage Maximum Power Point Tracking (MPPT) control strategy for the Aalborg photovoltaic inverter is presented. Aalborg inverter has many advantages, such as high efficiency, wide range of input voltage, minimum voltage drop of the filtering inductors, etc. Nevertheless, it is essentially a “half-bridge” inverter with two input sources, where one source works in MPPT mode,...
The paper presents a new MPPT method based on Golden-Section Optimization (GSO) technique for photovoltaic systems. The GSO-based MPPT converges to the MPP by interval shrinking. Initially, two points have been selected from the search space that is known, evaluated then a new point is accordingly generated. At given iteration the algorithm has a new narrowed interval bounded by the new point and...
This paper describes a PV system supplying a large scale interconnected grid. A PV array is connected to AC grid via a DC-DC boost converter and a three-phase three-level Voltage Source Converter (VSC). Maximum Power Point Tracking (MPPT) is implemented in the boost converter by means of a Simulink model using sliding mode controller by switching the duty cycle of the boost converter. A three phase...
This paper aims to presents the results obtained in PV emulating with a 1,5 kW Magna-Power programmable DC voltage source, boost converter, battery bank and resistive load. For MPPT (maximum power point tracking) an improved P&O algorithm is used. Hardware implementation is done under DS 1103 controller board running Matlab and ControlDesk® software with PX4 expansion box. This paper presents...
The aim of this work is to present a novel fuzzy slide mode control (FSMC) to extract a maximum power point (MPP) of the photovoltaic (PV) generator. This technique allows tracking the MPP consequently for the different operating condition of radiation and temperature. The FSMC is simulated with Matlab/Simulink environment and compared with the perturb and observe (P&O) method. The tests results...
This paper focuses on the problem of controlling a single-phase grid connected to the photovoltaic system with L filter. In this system the DC/AC converter is constituted by two stages: a boost power converter and a single phase inverter. The main control objective is threefold: (i) extracting maximum possible power from photovoltaic module MPPT (ii) tight regulation of the DC link voltage (iii) the...
This work provides the guidelines to calculate the size of the DC-link capacitor to contribute with additional energy - for a short period of time - than the photovoltaic panel can supply under normal operating conditions. First, a model of a three-phase electric generation system is used that combines photovoltaic panels and an inverter with an LCL filter at network side. In addition, a control algorithm...
The present paper is part of a larger project which aims to monitor and mitigate dust on the PV systems in the city of Arequipa. Its objective is to present a simplified model for simulating PV panels for the design and project maximum power point tracker - MPPT controllers. With an experimental setup, signals of voltage, current, power, irradiance and temperature were acquired. A SEPIC converter...
Non-linear solar photovoltaic (SPV) system characteristics and its dependency on meteorological variables of irradiance and temperature; renders this energy source rather involved to visualize. In this paper a low power realtime SPV module simulator is realized in field programmable gate array (FPGA) XCS100E platform for classroom teaching. FPGA platform is used due to its parallel computing nature...
The most important investment decision when it comes to implementing photovoltaic (PV) array(s) either for commercial or private application, is the levelized cost of energy (LCOE) calculation. Whereas LCOE, used as an assessment tool, to calculate the cost effectiveness of energy generation in relation to the return over investment in a prescribed time, can be calculated with a simple mathematical...
Photovoltaic is one of the electrical energy generating devices that potential for the future. In a large photovoltaic system, Photovoltaic Farm (PV Farm), there some issues that makes the operation less optimal. One of the problems is the shadow covering on the part of the area of PV Farm named Partially Shaded Condition. In topologies with single converter, partially shaded condition make the characteristic...
The operational characteristics of the off-grid microgrid are the basis for studying the operation mechanism and control strategy of microgrid. In this paper, the maximum power point tracking (MPPT) algorithm based on power duty cycle quadratic differential is adopted for the photovoltaic cells. based on the model of photovoltaic cells and lead-acid batteries, At the same time, two kinds of grid control...
This paper addresses the problem of maximum power point tracking for photovoltaic grid-connected system based on Markov model. Considering the stochastic characteristic of solar irradiation, a new maximum power point tracking method based on Markov model is proposed. Four discrete states are defined from a Markov chain according to the collected solar irradiation data, then the probability transition...
In this paper the performance of a maximum power point technique, which is suitable for photovoltaic applications to sustainable mobility, is documented. The approach is based on the use of one DC/DC converter per sub-section of the photovoltaic array, with a central controller that changes the duty cycle of each DC/DC converter in a way that the current injected into the battery is maximized. The...
this paper presents an adaptive photovoltaic (PV)-based independent public LED street lighting system. A bidirectional LED driver powered by an 80 MHz TM4C123GH6PM microcontroller is used in this system to charge the battery as well as drive the LED. The system use a hybrid charging method that is combined between three-stage charging method and an improved voltage based maximum power point tracking...
The topic work's the modeling and control of a hybrid system composed on a photovoltaic field and a wind turbine based on the Doubly Fed Induction Generator DFIG. The objective is to control the two sources separately in order to extract the maximum of power from the energy of the sun and the wind. For this purpose, a Backstepping controller based on the Lyapunov functions is used, ensuring the stability...
In order to maximize the use of renewable energy and increase reliability and economics of energy supply for end consumers, there has been rapid development in Microgrid technologies in recent years. In this paper, the concept and development of Microgrids is introduced, and then a Microgrid structure with Photovoltaic is presented. Maximum Power Point Tracking (MPPT) Algorithm and PQ control philosophy...
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