International Journal of Smart Home Vol. 10, No. 6 (2016), pp. 277-286 http://dx.doi.org/10.14257/ijsh.2016.10.6.27 ISSN: 1975-4094 IJSH Copyright ⓒ 2016 SERSC Performance of Different Types of DC - DC Converter with P & O Algorithm of MPPT A.Ambikapathy* 1 , Gajendra Singh and Prabhakar Tiwari 3 1 Asst proff, EEE, GCET, Gr.Noida 2 HOD, EEE, SU, Gr.Noida 3 AHOD, EEE, GCET, Gr.Noida 1 ami_ty21@yahoo.com, gajendra.singh3@sharda.ac.in , profptiwari@gmail.com Abstract This comparative study analysis of dc-dc converter for MPPT controller with P and O algorithm of a grid connected system finds the better suitable converter which can give the output with maximum power from the PV module and can have reliability to connect it to the GRID. In this paper the performance of LLC, ZETA and SEPIC converters are designed and simulated then its results are compared to identify the best suitable converter for the grid connected PV with P and O algorithm of MPPT circuit. The performance analysis has been carried out by connecting these converters in the circuit which already simulated for connecting the PV output to the commercial grid. The comparative performance analysis is done at the stage of gird as well as in the stage of output of the converter too. Keywords: Solar PV, Grid, Efficiency, MATLAB simulation, resonant converter, zeta converter, sepic converter 1. Introduction There are N number of process are involved to satisfy the electricity demand of the customer. The significance of saving one unit of electricity has been discussed in [1] as per that, there is necessity to generate two units of electricity for supplying one unit of electrical energy to the consumer. This is due to the different technical losses from the generating station to the consumer end. Not only technical problem but also the environmental pollution issues also involved in it [1]. Therefore the entire world now days inclined towards the renewable energy generation and started motivating by highlighting the importance of it due its numerous advantages such as fuel free and it require very less maintenance and environmental benefits etc. [2]. As we know that even though renewable energy has numerous advantages it has very less energy conversion efficiency for example solar power plant the efficiency of the plant is highly dependent upon the solar radiation, temperature, and load resistance and such kind of parameters are depends on environmental condition which cannot be controlled by human [3]. After generating the electricity again storing of the generated electricity is another challenge 1 . As we know that the storing of all the power which is generated from the solar power plant is impossible so, the remaining power which we get from solar power plant after supplying its own demand where the plant is located can be easily connect it to the commercial grid. [4-6]. Hence in this paper we are going to discuss the various DC- DC converters which are used in PV module which is connected to the commercial grid. Mainly there are three converters topologies which are been discussed in this paper according to their accuracy in power quality, efficiency, and reliability. All these comparisons are done with P and O algorithm of MPPT circuit. A.Ambikapathy is the corresponding author.