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In this paper, the new structure of non-isolated boost dc-dc converter is considered as achieving maximum power transferring to load from a photovoltaic (PV) power network. To achieving maximum power point (MPPT) of operating mode, the Perturb-and-Observe (P&O) is applied after modeling of other part of this power network such as battery, bidirectional dc-dc converter and proposing new control...
The modeling and the simulation of triple junction solar cells had been addressed in earlier research works. But there are many new cells with parameters not released by the manufacturers yet. The aim of this paper is to simulate the behavior of a C3MJ+ triple-junction solar cell by determining its J-V characteristics curve and its P-V curve. The maximum voltage, current density and power will be...
Electricity demand is mounting around the world due to increased world population. For the years, conventional energy resources have been employed for the purpose of power generation. Rapid depletion plus their environmental and economic concerns has challenged the compatibility of conventional resources to deal with this mounting electricity demand. Therefore, it is necessary to exploit the renewable/alternative...
Understanding photovoltaic (PV) cell operation relies on accurate models being available that follow practical PV characteristics. Many models are proposed in the literature that vary in their complexity and range of application. This paper investigates the key issues involved in developing an accurate PV cell model that can demonstrate the effects of environmental factors. Operational constraints...
A novel combination of quantum dot intermediate band solar cell and dual-junction tandem cell is proposed and studied numerically. We built our device model by using Matlab® coding and commercial software Silvaco®. A proper inclusion of quantum-dot-related carrier absorption is adapted through modified extinction coefficient k, and effective band gap of the device. The final calculation shows the...
Mathematical and electronic models of temperature characteristics of solar cells and photovoltaic modules in a function to increase energy efficiency of the cells and the modules are considered and presented in the paper. Temperature analysis of solar cell current, open circuit voltage and power of solar cell is given. Obtained results are compared with results of software simulations for one practically...
Solar PV based electricity generation is gaining importance due to its abundant availability and improvements in materials and energy conversion technology. Global warming and fossil fuel depletion is indirectly catalyzing this transformation process. As the solar power conversion is already a low efficient conversion process, accurate and reliable modelling of solar cell is imperative to optimize...
In odder to improve positioning precision and decrease the exceed initial value of solar cell transfer robot, we design a kind of PID controller with fuzzy self-adjusting function based on fuzzy control technique, solve the problem that the PID-controller can not adjust parameters itself on line. The result of simulation in fuzzy logic toolbox of Matlab proves that the controller possess both the...
Photovoltaic (PV) system is composed of several elements as solar cells, boost converter, inverter and load. Owing to the existence of converters, photovoltaic system is a hybrid system contains continuous dynamic and discrete dynamic. Traditionally, the power electronic converter is difficult to model. This paper illustrates the modeling method of hybrid system, especially finite automata model....
Photovoltaic (PV) system is composed of several elements as solar array, boost converter, inverter and load. The solar array should be integrated with a dc-dc converter and a control algorithm to perform a search to track the maximum power continuously. We adopt perturbation and observation method to implement Maximum Power Point Tracking (MPPT) for solar cells. Owing to the existence of converters,...
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