DESIGN AND CONSTRUCTION OF A 1KVA SOLAR INVERTER SYSTEM

A solar inverter is an electrical device that converts the direct current (DC) electricity produced by solar panels into alternating current (AC) electricity, which is the form of electrical power used by most household appliances and the public power grid. In simple terms, it acts as the “brain” of a solar energy system, ensuring that the electricity generated by the panels can be used efficiently or fed into the utility grid (Sharma and Yadav, 2021). Modern solar inverters also perform additional functions such as monitoring system performance, maximizing power output through Maximum Power Point Tracking (MPPT), and ensuring safety by detecting faults or shutdowns during grid failures (Kumar et al., 2020). The concept of converting DC to AC electricity predates solar technology itself. The first inverter was invented by Clemens Thomas in 1925, who developed an early form of the electromechanical inverter that used mechanical switches to reverse the direction of current flow, producing alternating current from a direct current source (Smith, 2019). However, the solar inverter specifically designed for photovoltaic (PV) systems was first developed in the 1950s, following the invention of the silicon solar cell by Bell Laboratories in 1954 (Perlin, 1999). These early inverters were large, inefficient, and primarily used for space and research applications. Over time, the development of solid-state electronics and semiconductor technology in the 1960s and 1970s made it possible to design smaller, more reliable, and efficient inverters for residential and commercial solar systems (Hansen and Hansen, 2017).