A Review on Photovoltaic Module Based Grid Connected system

Authors: Shaurabh Sen, Dr. Dev Kumar Rai

Certificate: View Certificate

Abstract

The Photovoltaic system gives useful energy when it is used with Inverter, termed as Grid connected technique. The main objective of this paper is to review for grid connected system for PV application and to increase energy efficiency by using renewable energy sources. Literature survey clear problem has been observed from inverter grid connected system. Therefore to review about different grid connected system and inverter, as well as improve battery lifetime extension and power enhancement.

Introduction

Renewable energy is increasingly considered essential for meeting current and future energy needs [1]. Photovoltaic (PV) power, as it is clean and unlimited source of energy, is probably the best technology amongst all renewable energy sources and therefore a considerable amount of research has been conducted recently in this field. To better utilize the PV power, grid interconnection of PV system is needed. PV power rendering to the utility grid has been the fastest growing renewable energy technology by far since it attracted the attention of policy makers [2] The increasing number of renewable energy sources and DG requires new approaches for the operation and management of the electricity grid in order to maintain or even to improve the power-supply reliability and quality. In addition, liberalization of the grids leads to new management structures, in which trading of energy and power is becoming increasingly important. In grid connected inverter system, the power generated by Photovoltaic plant is directly given to the transmission line and it is distributed. Henceforth, the use of batteries and other energy storage devices is not required that makes the arrangement less space, reduced investment cost and maintenance than stand alone system. The evolution of solid state inverter techniques and its control strategy have established photovoltaic into the grid as shown in Fig. 1. Due to variation of input supply at the inverter side, the PV inverter topology and its control design is made robust with the promising contol structure. The dc-link voltage is fixed to supply constant voltage to the inverter.

Conclusion

In this review paper of grid connected inverters which covers the inverter operation in terms of circuit simplicity, application, robustness, and ease of implementation in MATLAB. Single stage inverters which are generally centralized in pattern should be given less preference because of amplification and PV character mismatching. For low power application VSI technique is preferable