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Increase of load and demand factor on power grids has made supply of electric power to rural areas as a big challenge. The idea of increasing the number of power plants could not be much efficient because it increases the emission of carbon and production cost. Hence use of renewable power sources seems to be much more efficient. The main motive of this proposed work is an efficient design of solar...
This paper introduces a single sensor based maximum power point tracking (MPPT) strategy for solar photovoltaic (PV) array fed battery charging by using normal harmonic search (NHS) algorithm. The NHS algorithm is an improved version of the harmony search, which is inspired to the music composition technique and its searching ability is improved by using the normal probability distribution factor...
This paper presents an energy harvesting system for adaptation with thermoelectric generators (TEG). The TEG system is a dc power source based on Seebeck effect, which utilizes the temperature gradient between hot and cold sides of the TEG module. The output voltage is highly dependent on temperature difference. A DC-DC converter is needed to regulate the output power of the TEG and to actively track...
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, DC-link voltage control in DC microgrids with photovoltaic (PV) generation and battery, is addressed based on an intelligent approach. The proposed strategy is based on the modeling of the power interface, i.e. power electronic converter, located between the PV array, battery and DC bus, by use of measurement data. For this purpose, a local model network (LMN) is developed to model...
A reverse control scheme for modular telecommunications battery chargers with solar panel input is investigated in this paper. Small-signal analysis is performed for a typical state-of-the-art multi-stage converter and the reverse control transfer functions are presented and used to develop a linear control strategy, which is validated using simulations and experimental results.
The new principle of power maximizing of solar battery (MPPT) is proposed. The system based on a specific implementation of the PWM DC-DC converters, through which the solar battery is connected to the load. Instead of a linear carrier voltage, typically used in PWM systems, the special created periodic function plays a role of the carrier curve that is mathematically similar to the dependence of...
This paper presents the practical and theoretical design of the power supply unit (PSU) of the Sathyabama University Nano Satellite. The solar arrays are configured such that the cells of each side on the satellite are connected in series and the four sides are connected in parallel. This configuration has been chosen, because it was found that it is the best trade off between ease of maximum power...
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...
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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