Transformer Less Grid Integrated Single Phase PV Inverter Using Prognosticative Control Chandla Ellis 1,* , C. Chellamuthu 1 and J. Jayaseelan 2 1 Department of Electrical and Electronics Engineering, R.M.K Engineering College, Chennai, 601206, Tamil Nadu, India 2 Department of Mechanical Engineering, Dr. M G R Educational and Research Institute, Chennai, 601206, Tamil Nadu, India *Corresponding Author: Chandla Ellis. Email: chandalaellis234@gmail.com Received: 27 August 2021; Accepted: 22 October 2021 Abstract: Nature's remarkable and merciful gift to the planet Earth is sunlight which may be highly lucrative if harvested and harnessed properly. Photovoltaic (PV) panels are used to convert the solar energy to electrical energy which are currently used to feed AC loads/grid. In this paper, modelling, performance and power flow studies of grid connected single phase inverter fed from PV array under steady state as well as transient conditions are considered. This paper focuses on the study and development of analytical model of micro-grid inte- grated single phase five level cascaded H-bridge inverter (MGISPFLCHBPVI) powered by a PV panel. A simple power control strategy for MGISPFLCHBPVI is also considered. The simulations are completely carried out using MATLAB software for power-flow studies. The performance characteristics of the inverter are studied from the analytical model developed. The validation of the analytical model is carried out by comparing the results of simulation in Simulink/Matlab. In order to reduce the time to reach steady state taken by the system, a simple PQ control strategy for insolation is introduced in this paper. The proposed method is evaluated based on performance parameters such as settling time and rising time of the system compared with the results available in the literature. Keywords: AC loads/grid; PV array; PV panels; single phase inverter; switches; P-Q control; insolation 1 Introduction Sunlight is readily available in abundance all over the world and its proper deployment eliminates approximately 45% power deficiency existing globally. Extracting maximum power from PV array increases the overall efficiency of the PV system [1]. In order to extract maximum energy available from PV array, power electronic converters are designed and utilized with solar arrays and load thus the system serves as a stand-alone PV system [2]. Solar cells are the basic unit of PV generator, which are connected in series to build a PV module. PV strings are built by connecting solar modules in series. The PV strings are connected together in series and parallel to build a PV array to meet the voltage and power requirements [3]. This work is licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Intelligent Automation & Soft Computing DOI:10.32604/iasc.2022.023079 Article ech T Press Science