Automatic Transfer Switch for Critical Loads Between Renewables, Storage, Mains, or Generator

With every global infrastructure and industrial revolution, critical loads have been significantly increased. Challenges faced by power system infrastructures are continuously accumulating daily. Despite advancements in energy generation, transmission, and power systems development, substantial disparities persist between load requirements and power system reliability. An Automatic Transfer Switch (ATS) is presented as a reliable means for transferring critical loads between primary and other available sources of electrical power. The ATS design discussed in this context incorporates four diverse sources of electrical power, namely renewables, battery storage, mains, and generators. Industries today encompass a broad spectrum of facilities demanding continuous or nearly continuous uptime. Typically, reliant on utility-fed power during normal conditions, these facilities resort to emergency (alternate) power sources, such as generators or backups, when the primary source is unavailable. The developed ATS operates on the principle of utilizing renewables, battery storage, mains, and generators, with the flexibility to switch back to any higher-priority source once it becomes available. The ATS design incorporates a microcontroller for its operation, a voltage regulator circuit serving as the voltage detector, a relay module for seamless switching between the four power supplies, and a Liquid Crystal Display (LCD) functioning as an indicator. Additionally, a data collection module can be integrated into the proposed study to facilitate deep learning of energy source availability and the nature of critical loads. This collected data can be utilized for analysis, enabling the self-control of energy sources with a more efficient utilization of available energy resources.