International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 06 | Jun 2025
p-ISSN: 2395-0072
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Design and Simulation of a Self-Reconfiguring Domestic Solar Power System Navaneeth Krishna T1, Baby K A2 1Graduate in Electrical and Electronics Engineering, Government Engineering College, Palakkad, Kerala. 2Assistant Professor, Dept. of Electronics and Communication, Vidya Academy of Science and Technology, Thrissur,
Kerala, India. ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - Frequent power interruptions in residential
ensure optimal energy harvesting under variable environmental conditions. A comprehensive simulation study was carried out using MATLAB/Simulink to validate the system’s performance. The simulation models include PV arrays, buck and boost converters, battery charging and discharging logic, and a single-phase inverter with an LC filter. The controller monitors the battery's State of Charge (SOC) and dynamically reconfigures power flow to ensure continuous supply and efficient energy utilization.
areas highlight the need for reliable and sustainable energy solutions. This paper presents the development of a selfreconfiguring domestic solar power system that integrates solar photovoltaic (PV) panels, a battery bank, and grid connectivity to ensure continuous power supply. The system employs Maximum Power Point Tracking (MPPT) using the Perturb and Observe (P&O) algorithm to maximize energy extraction under varying irradiance conditions. A smart control unit monitors the State of Charge (SOC) of the battery and dynamically switches between solar, battery, and grid power based on availability and demand. The design incorporates DC-DC converters (buck and boost), an inverter, and an intelligent switching mechanism to manage power flow efficiently. Simulation studies were conducted using MATLAB/Simulink to verify the performance of each subsystem and the overall architecture. Results confirm the system’s ability to maintain stable AC output while reducing dependency on the grid and optimizing solar usage. This hybrid configuration provides an effective solution for residential energy management, particularly in regions with inconsistent grid reliability.
Simulation results confirm the system's ability to maintain a stable 230 V RMS, 50 Hz AC output while minimizing grid dependence and maximizing the use of solar energy. This simulation-based validation demonstrates the feasibility and effectiveness of the proposed system for enhancing residential energy reliability and sustainability. An open loop strategy is considered for the MATLAB Simulation of the three main types of PWM inverters available in the market. A brief description of PV array, charge controller and battery is also presented in this paper. An endeavour is made to compare the different inverter or the inverter system available in various aspects. Among the inverters considered, the micro inverter which is a grid tied, with sine wave output has got the better flexibility and efficiency. The existing standalone systems that are used to feed power from solar photo voltaic (PV) array to off-grid loads require several stages of power conversion thereby reducing its reliability and efficiency. In order to address the aforementioned limitations of the existing standalone PV systems, a topology involving a novel boost inverter which does not require the increment in the voltage levels of the PV array and/or battery is proposed in this paper. Detailed analytical studies of the system are carried out. The efficacy of the proposed scheme is verified by means of detailed simulation studies.
Key Words: Hybrid solar inverter, Perturb and Observe (P&O) algorithm, Renewable energy, Grid-tied inverter, State of Charge (SOC), MATLAB/Simulink, Domestic energy management.
1. INTRODUCTION The growing demand for uninterrupted power in residential sectors has led to an increased reliance on renewable energy solutions, particularly solar photovoltaic (PV) systems. Traditional home inverters, while commonly used during grid outages, are limited by their dependence on grid-based charging and lack the intelligence to efficiently manage multiple power sources. To overcome these limitations, hybrid solar systems with integrated control logic and storage solutions have emerged as a viable alternative.
2. OBJECTIVE This work aims at maximizing the use of solar energy by charging the battery as well as by supplying it to the loads when in excess. This system is implemented using two subsystems namely a charge controller and a Power Flow Management System(PMS). The charge controller is used to control the power flow from the PV module to the battery by operating in two modes. The Maximum Power Point
This paper presents the design and simulation of a selfreconfiguring domestic solar system that intelligently switches between solar PV, battery storage, and the utility grid based on real-time energy availability and load demand. The system integrates Maximum Power Point Tracking (MPPT) using the Perturb and Observe (P&O) algorithm to
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