فهرست نشریات علمی دسترسی آزاد ایران

In this paper, we present a cost-effective and efficient design for a single-phase solar power inverter system aimed at converting solar energy into high-quality alternating current (AC) power. The primary objective of this design is to enable the reliable integration of renewable energy into residential and industrial electrical systems. A PIC16F876A micro-controller was employed to generate a sinusoidal pulse-width modulation (SPWM) signal, which precisely controls the operation of the H-bridge inverter circuit. This configuration allows the system to convert direct current (DC) from solar panels into a stable AC output. To further improve power quality, a lowpass LC filter was incorporated at the inverter output to eliminate high-frequency harmonics, producing a waveform that closely resembles a pure sine wave. Simulation and practical hardware testing confirm that the inverter delivers a consistent and stable AC output with minimal harmonic distortion. Due to its simplicity, scalability, and low cost, this design is highly suitable for renewable energy applications, including powering sensitive electronic equipment, off-grid systems, and energy-efficient smart homes or small industrial setups. It offers a promising solution for enhancing energy access and sustainability, particularly in regions where conventional grid connectivity is limited or unreliable.