Smart Solar Portable Power Supply System for Emergency Medical Equipments

During emergencies or natural disasters, sustainable electricity generation is critical for human survival or saving lives. Hence the best alternative solution for such a situation is a Smart Solar Portable Power Supply System with a battery-based solar system and Thevenin circuit for load study and power theft control. It consists of solar PV arrays with an MPPT controller and boost converter to maximize output power at variable irradiance. The boost converter's output is connected to a metal hydride battery and six circuit breakers for switching according to the load requirement. A Space Vector Pulse Width Modulation based inverter is connected to the battery system, which in turn is connected to the load. A Thevenin test circuit is connected across the load for analyzing its requirement to display the battery's duration for the connected load. Graphical user interface (GUI) based micro-controller is used to control switching of circuits from test circuit to the main circuit based on the proprietor's choice. The duration display and unanimous control of the system via GUI make the system reliable and theft-proof. A quantitative survey was conducted among thirty-three medical practicians and paramedics regarding the usefulness of this system on how it could save lives.