Modification, Simulation and Performance Evaluation of a 1.5kVA Solar Inverter Power Pack for Application in TVET Electronic Laboratories and Workshops

Department of Electrical and Electronic Engineering Technology, Federal Polytechnic, Wannune,
Nigeria.

This paper presents a practical and educational framework for the design, implementation, and performance evaluation of an enhanced solar photovoltaic (PV) system tailored for Technical and Vocational Education and Training (TVET) electronic laboratories and workshops. The study focuses on determining the optimal tilt angle and orientation of PV panels, alongside the implementation of Maximum Power Point Tracking (MPPT) to improve energy efficiency and system performance. A MATLAB/Simulink-based model was developed to simulate real-life operating conditions and support hands-on learning in laboratory environments. The results demonstrate that panel positioning has a significant impact on energy generation, with an optimal tilt angle of 18° producing the highest power output of approximately 0.7902 kW. In addition, a south-facing orientation was found to yield maximum solar energy capture compared to east- and west-facing configurations. The implementation of Whale Optimization Algorithm based MPPT further enhanced system performance, increasing
power output from 0.7114 kW to 0.7904 kW and improving efficiency from 89% to 99%. Overall, the findings confirm that proper system design, optimal panel configuration, and intelligent control strategies are essential for maximizing PV system performance. The developed framework serves as an effective instructional tool for TVET institutions, enabling students to acquire practical skills in renewable energy system design, system optimization, and performance analysis. This approach supports competency-based training and prepares learners for real-world applications in the renewable energy sector, particularly in regions with high solar energy potential.

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