Implementation of Automatic Transfer Switch on DC System

Conventional energy consumption has increased every year, especially in the electricity sector, but is not balanced with available conventional electrical energy sources. So that the proposed effort related to these problems is the use of renewable energy, but in the implementation of the transition from conventional energy to renewable energy it still takes several processes and costs quite a lot. The proposal made by the author offers a solution in the form of an automatic switch that combines several renewable energy sources of electricity as a top priority and makes conventional electrical energy a backup source. The contribution of this research is to reduce the level of conventional energy consumption, in this study conventional energy is converted into a DC system. The goal is for the system to gradually enter a renewable energy DC system. The advantage of this research is that the system used in the automatic switch can be updated to adjust the load so that in the future the automatic switch system can work without using conventional energy. In this study using the switch case statement method, the advantage of this method is that it can avoid repeated statements in a system considering that the DC automatic switch system in this study uses four different sources namely energy sources designed for renewable energy (hybrid) as a priority supply. 1, battery 1 (from hybrid system) as priority supply 2, conventional energy(PLN) as priority supply 3, and battery 2 (from conventional energy) as priority supply 4. In testing the automatic switch conditions as many as 43 of the four sources there were 941 events to select the voltage a source that meets the criteria of 12 volts to supply the load and for the same voltage is passed according to the voltage priority and for a voltage of 10 volts is passed in the system. And on testing to load 40 watt a constant working voltage and current. in the range of 12–14 volts and a current of 2.8-3.4 A.