Energy crisis is the most important issue in today's world Conventional energy resources are not only limited but also the prime culprit for environmental pollution Renewable energy resources are getting priorities in the whole world to lessen the dependency on conventional resources Solar energy is rapidly gaining the focus as an important means of expanding renewable energy uses Solar cells those convert sun's energy into electrical energy are costly and inefficient Different mechanisms are applied to increase the efficiency of the solar cell to reduce the cost Solar tracking system is the most appropriate technology to enhance the efficiency of the solar cells by tracking the sun A microcontroller based design methodology of an automatic solar tracker is presented in this paper Light dependent resistors are used as the sensors of the solar tracker The designed tracker has precise control mechanism which will provide three ways of controlling system A small prototype of solar tracking system is also constructed to implement the design methodology presented here

Design and construction of an automatic solar tracking system

An overview on performance of PV plants commissioned at different places in the world

Experimental validation of an improved concept of building integrated photovoltaic panels

In the near future, the power scenario across countries worldwide is expected to impact substantially on the solar photovoltaic system. This paper demonstrates the design and performance analysis of a 1000-kilowatt (kW)-grid-tied solar photovoltaic plant (PVP). The PVP is partitioned into four small solar PVPs of 250 kW each, consisting of an inverter and a combination of solar panels arranged in series and parallel. For better characterisation of overall plant performance, the power-generating system (solar PVP) is analysed by considering several parameters. After monitoring the plant over a span of one year, the data-based information is compiled by adding some final conditions and relative results on the PVP efficiency. Results show the annual performance ratio average was 0.77.

Analyzing the on-field performance of a 1-megawatt-grid-tied PV system in South India

Review of dual axis solar tracking and development of its functional model

In order to increase the efficiency of PV system, it is generally used three method the first is the increasing the efficiency of solar cell, the second is the energy conversion system included MPPT control algorithm and the third is the using solar tracking system. In solar tracking system, it is used DC motors, special motors like step motors, servo motors, real time actuators, to operate moving parts. DC motors are normally used to operate solar tracking system but it is highly expensive to maintain and repair. In this paper, it is proposed 150 W solar tracking system. Proposed system designed as the normal line of the solar cell always runs parallel the ray of the sun. In this paper proposed system can minimize the solar cosign loss of the photovoltaic system

A study on the tracking photovoltaic system by program type

In this paper, for the field test of the first photovoltaic (PV) systems in Korea, the performance of a 3kW grid-connected PV systems for house, separately installed in the solar energy demonstration research complex, had been analyzed for the four years from January 2003 to December 2006.

Performance assessment of 3kW grid-connected PV Systems in Korea

In this paper, for the usefulness to the performance improvement of the photovoltaic (PV) array and inverter and their design, construction, and post-operation and management, which can become the key elements for the future PV system, the performance characteristics of the 50kW grid-connection PV system in Korea was evaluated and analyzed.

Zheng-Guo Piao

Papers

A study on the tracking photovoltaic system by program type

Performance assessment of 3kW grid-connected PV Systems in Korea

Operating characteristics for 50kW utility interactive photovoltaic system in Chosun University, Korea