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The paper refers to modelling characteristics of a simple photovoltaic system with thermal phenomena taken into account. This system consists of a photovoltaic panel, battery and two switched-mode voltage regulators. The electrothermal models of all the components of such systems are presented. These models are dedicated to electrothermal dc and transient analyses. The correctness of the models of...
In this paper, a study of Hybrid power system to supply energy to an electric vehicle is presented. The hybrid system is used to produce energy without interruption and it consists of a photovoltaic generator (PV), a proton exchange membrane fuel cell (PEMFC) and a battery bank. PV and PEMFC systems work in parallel via DC/DC converter and the battery bank is used to store the excess of energy. The...
This article studies an autonomous photovoltaic system. The main purpose of this work is to describe a renewable energy system that operates separately from the grid. The components include photovoltaic panels, a dc/ dc buck converter with MPPT and a load. Generally, this system is used in remote sites. The electrical photovoltaic panels must be able to supply energy, including when there is no more...
In this paper project and measured characteristics of the laptop's power supply station with photovoltaic module are presented. This device consists of two switch-mode voltage regulators, photovoltaic module and the lead-acid battery. In the following sections step-down and step-up switch-mode voltage regulators are described and the measured by the author characteristics of voltage regulators and...
This paper presents a battery charging system that uses a photovoltaic panel and determines the charging current at different levels of solar illumination. In the analysis of photovoltaic cells, one must bear in mind that the light reaches the cell in various amounts, the cell is exposed to significant temperature variations during its operation, the solar panels differ in size and, of course, various...
In this study, implementation of design and simulation programme of a solar energy (photovoltaic panel) supported hybrid electric vehicle was designed, which is considered to be widely used in the 21st century. In the study, DC motor was simulated for a serial hybrid electric vehicle in ICE-generator and photovoltaic panel matlab/simulink environment. Moreover, a .m file was written by calculating...
This paper presents stability analysis of a photovoltaic (PV) system with DC/DC flyback converter. Traditional methods of stability analysis have limitations due to the non-smooth nature of the converter, but it is possible to analyze a piecewise smooth system with the Filippov's method. Functions are presented for each of the surfaces defined by different switching states. Simulates the behavior...
It is necessary to track the maximum power point of the photovoltaic array rapidly and accurately. On the basis of the output characteristics of photovoltaic array, the principle of incremental conductance and perturb-and-observation algorithms to implement maximum power point tracking (MPPT) in photovoltaic system is further analyzed. This article describes the software flow chart of the two methods...
As distributed power sources seem to become increasingly popular in the near future, power electronics should be able to provide significant advantages in processing power from renewable energy sources using fast response and autonomous control. Fuel cells, photovoltaic devices and storage batteries sources produce a significant power in hybrid power structure. In this paper, the uninterruptible power...
An embedded systems like e-Book where it consumes less power and employs greatly in outdoor environment, solar energy can be introduced for extending the reading time. In this paper, to design e-book system with photovoltaic solar cell application, solar harvesting module must be considered. But measurement showed that charging current for battery is significantly affected by solar cell type and the...
This paper describes a method of Maximum Power Point Tracking(MPPT) with MCU controlling system in grid-connected photovoltaic generation system, especially introduces the techniques and principles of DC-DC conversion. The MPPT is implemented with a Buck-Boost DC-DC converted circuit topology. The system is simple with good response speed, and the controlling method is flexible with software and hardware...
The main aim of this paper is the analysis and experimental evaluation of the performance of a photovoltaic power plant controlled by a dedicated algorithm. This is devoted to the search of the maximum power point during the energy conversion of the photovoltaic panels. The proposed approach uses a control strategy that does not requires the current sensing, which is a main cause of noises, errors...
Photovoltaic generators exhibit nonlinear I-V characteristics that vary with solar insolation. This paper describes a technique for real time tracking of the maximum power point (MPPT) of a solar panel charging a battery. A step down switching regulator is used where the duty cycle is varied to attain the desired MPPT level. Performance of the MPPT is evaluated theoretically using ORCAD SPICE. A prototype...
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