ArticlePDF Available

IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331, Volume 10, Issue 1 Ver. I (Jan – Feb. 2015), PP 07-10

Authors:

Abstract and Figures

Solar Energy consists of abundant amount of energy. To utilize this energy for electrical applications PV panels were introduced. Panels can generate DC electricity directly through sunlight. Spectrum of sun is quite wide which varies according to the geographical location. To harness maximum amount of energy from available sunlight tracking of PV panel was introduced. In this paper A PV power pack based single axis solar tracking system prototype is developed. The overall solar tracking system consists of a mechanism that enables the PV panels to follow or track the sun. The mechanical structure consists of one servo motor that drives the mechanism, LDR sensors for measuring light intensity and a programmable microcontroller responsible for giving electric signals to the motors in accordance to the sun angle in order to achieve solar tracking (keeping the PV panel perpendicular to the sunlight). Based on the system requirement tilt angle is provided of 25 angle southwards. The feedback control system operation is based on servo mechanism principles and the controller is responsible for the solar tracker motion. The controller coding and servo mechanism is simulated in PROTEOUS 7.
Content may be subject to copyright.
A preview of the PDF is not available
ResearchGate has not been able to resolve any citations for this publication.
Article
Full-text available
The spectrum of solar energy is quite wide and its intensity varies according to the timing of the day and geographic location. We review solar energy conversion into electricity with particular emphasis on photovoltaic systems, solar cells and how to store electricity.
Conference Paper
Full-text available
In this paper, the design of a low cost two-axis solar tracker is introduced. The aim is to obtain a high precision positioning of the cell. The control-board is able to support different control strategy such as classical techniques as PID algorithm or more advanced strategy such as fuzzy logic control (FLC). Using the error signal, the tracking capacities of the proposed approaches can be tested experimentally on the experimental prototype built in our laboratory.
Article
Full-text available
Solar photovoltaic (PV) arrays in portable applications are often subject to partial shading and rapid fluctuations of shading. In the usual series-connected wiring scheme, the residual energy generated by partially shaded cells either cannot be collected (if diode bypassed) or, worse, impedes collection of power from the remaining fully illuminated cells (if not bypassed). Rapid fluctuation of the shading pattern makes maximum power point (MPP) tracking difficult; generally, there will exist multiple local MPPs, and their values will change as rapidly as does the illumination. In this paper, a portable solar PV system that effectively eliminates both of the aforementioned problems is described and proven. This system is capable of simultaneously maximizing the power generated by every PV cell in the PV panel. The proposed configuration consists of an array of parallel-connected PV cells, a low-input-voltage step-up power converter, and a simple wide bandwidth MPP tracker. Parallel-configured PV systems are compared to traditional series-configured PV systems through both hardware experiments and computer simulations in this paper. Study results demonstrate that, under complex irradiance conditions, the power generated by the new configuration is approximately twice that of the traditional configuration. The solar PV system can be widely used in many consumer applications, such as PV vests for cell phones and music players.
Article
Full-text available
This paper deals with the design and execution of a solar tracker systemdedicated to the PV conversion panels. The proposed single axis solar tracker deviceensures the optimization of the conversion of solar energy into electricity by properlyorienting the PV panel in accordance with the real position of the sun. The operation of theexperimental model of the device is based on a DC motor intelligently controlled by adedicated drive unit that moves a mini PV panel according to the signals received from twosimple but efficient light sensors. The performance and characteristics of the solar trackerare experimentally analyzed.
Conference Paper
This paper deals with the design, control and modeling of an isolated solar-PV (Photo-Voltaic) energy generating system. The proposed system is designed for supplying an average consumer load of 1.5 kW. A constant voltage method is applied to the PV array for MPPT (Maximum Power Point Tracking). A push-pull boost dc-dc converter is fed from the PV array for charging the battery. A VSI (Voltage Source Inverter) utilizing multi-loop feedback control technique with a BESS (Battery Energy Storage System) is used for power management of the proposed system. This solar-PV energy generating system is designed, modeled and its performance is simulated in the Matlab using the Simulink, Sim power system etc. toolboxes. Simulated results are presented for the linear, nonlinear and motor loads to demonstrate its performance.
Article
Solar energy is rapidly gaining popularity as an important means of expanding renewable energy resources. As such, it is vital that those in engineering fields understand the technologies associated with this area. This paper presents the design and construction of a microcontroller-based solar panel tracking system. Solar tracking allows more energy to be produced because the solar array is able to remain aligned to the sun. A working system will ultimately be demonstrated to validate the design. Problems and possible improvements will also be presented. Key Words: Solar, Tracking, Microcontroller, photocells, drivers, single axis.
Article
Maximization of power from a solar photovoltaic (SPV) module is of special interest as the efficiency of the SPV module is very low. The present work describes the maximum power point tracker (MPPT) for the SPV module connected at variable load conditions. A personal computer (PC) is used for control of the MPPT algorithm. The power tracker is developed and tested successfully in the laboratory. The simulations are carried out in Matlab/Simulink. Data acquisition, monitoring, and control are done by the dSPACE software. Different types of algorithms are studied. The algorithm implemented here is “perturb and observe” in a microcontroller-based PC to extract maximum power from the SPV module. The measured parameters such as panel voltage, current, and power are obtained with and without MPPT systems and have been tested on the SPV Module at various load conditions, different temperatures and insolation labels. The comparative results with and without MPPT are shown; the results show that the tracking capability with MPPT improves as compared with without MPPT.
Article
A microprocessor-based automatic sun-tracking system is proposed. This unit controls the movement of a solar panel that rotates and follows the motion of the sun. There are two limit switches attached to the panel to mark its maximum angular positions in the east and west. The status of the limit switches is read by the microprocessor and indicates that the maximum angular position in either direction has been reached and the panel should not be driven any further. As the plane of the panel is always kept normal to the direction of the sun, maximum thermal energy is obtained from the solar panels
Comparison of Power Output fromSolar PV Panels with Reflectors and Solar Tracker
  • A Ajayi
  • B Majekodunmi
  • A Shittu
Ajayi, A., B., Majekodunmi O., A. and Shittu A., S. 2013 Comparison of Power Output fromSolar PV Panels with Reflectors and Solar Tracker, Journal of Energy Technologies and policy. 3:70-77.