Low-Cost Microcontroller-Based Automatic Transfer Switch Unit Design to Mitigate Power Fluctuations

Energy irregularity in solar and other renewable stations constitutes a serious problem, and therefore, this requires an alternative source to overcome the phenomenon of fluctuation or power outages. In this research, an electronic circuit was designed to automatically switch between two sources of voltage automatically without human intervention. The circuit contains a programmed microcontroller to switch between two sources automatically. Where a group of electronic elements were used in the design of this circuit Automatic transfer switch (ATS), which includes microcontrollers, modules, and other elements. The maximum load for this circuit that has already been tested is (60 amps) at the maximum load capacity, where relays were used with a maximum capacity of 60 amps, where the electronic circuit that was designed was tested and proven effective in terms of automatic switching between two sources without manual intervention from humans. The proposed circuit decreases the voltage and power fluctuation.