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Design and Implementation of Hardware Reconfigurable Three-Mode Automatic Change-Over System

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Abstract:

Automatic change over system is a technique that ensures uninterrupted power supply in a building. It can also be designed to optimize the cost of electricity usage. Two-mode automatic change over system is common. Given the rising cost of electricity in recent times especially in developing country like Nigeria, many individuals and cooperate organizations now have three independent sources of power: photo voltaic, grid and generator power supplies, in attempt to optimize the cost of electricity. There is therefore a need to have an automatic change over system that is both configurable and maintainable to meet user’s needs. This work designed, simulated and implemented a hardware reconfigurable three-mode automatic change-over system. The mathematical models of the considered independent sources were considered before developing a state matrix that can be used to reconfigure the input sources to match user’s priority when installing the change-over system. The state diagram of the system was developed before simulating the system using Simulink in MATLAB. Relay logic was used to implement the state matric while AC contactors and relays were used to implement the physical system. The system showed optimal performance after testing and exhibited a near zero response time. It is expected that availability of this system will be optimal given that the system components can be locally sourced in case of component failures.

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Periodical:

Applied Mechanics and Materials (Volume 933)

Pages:

131-142

DOI:

https://doi.org/10.4028/p-5TBOe6

Citation:

Cite this paper

Online since:

February 2026

Authors:

Ekene S. Mbonu*, Onyekachi V. Aniugo, Philip J. Ezigbo, Emmanuel C. Amadi, Chijioke K. Joe-Uzuegbu, Nkolika O. Nwazor

Keywords:

Cost Optimization, Hardware Reconfigurable, Local Content, Relay Logic, State Diagram, State Matrix, Three-Mode Automatic Change-Over System

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Сopyright:

© 2026 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] A. B. Michael, A. Daniel, A. Joel, A. Kojo and D. Ambrose, "Design and Simulation of a Versatile Three-Phase Automatic Changeover Switch," in 2022 International Conference on Engineering and Emerging Technologies (ICEET), Malaysia, 2022. [2] C. O. Onah, P. K. Kpochi and A. O. Goodman, "Design and Implementation of an Automatic Changeover Switch with Generator Trip-off Mechanism," International Journal of Engineering Science Invention (IJESI), pp.41-48

DOI: 10.1109/iceet56468.2022.10007253

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