Design and Implementation of Inexpensive Autonomous Single-Phase Inverters with Real-Time Energy Monitoring for PV Applications
Keywords:
H-bridge topology, Low cost, PCB, Real-time energy monitoring, Single-phase inverter, Sinusoidal Pulse Width Modulation (SPWM)Abstract
In this article, we discuss the design and development of embedded single-phase H-bridge inverter plates for converting DC energy from renewable sources such as batteries and solar panels. We also present a 230 V power supply suitable for alternating current services at 50 Hz. The inverter utilizes four MOSFET transistors with Schottky diodes, LC filters for pure sinusoidal voltage output, and a 12 V to 230 V step-up transformers for accurate control and monitoring of current. The H-bridge topology is integrated with a controller that uses an interrupt-based method to generate the SPWM signal and switch the H-bridge. Additionally, real-time energy consumption parameters are displayed on an LCD. The cost-efficiency of this design is achieved through the use of inexpensive components and custom-designed PCBs. Experimental tests demonstrate the performance of the inverter, which delivers high-quality alternating current output with minimal harmonic distortion. This work presents an affordable and compact inverter design with integrated energy monitoring, offering an effective solution for renewable energy systems and small-scale applications when compared to existing alternatives.
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