An intelligent battery management system based on fuzzy controller for home microgrid working in grid-connected and island mode

This paper presents an intelligent battery management system (iBMS) used in Home Microgrid working in a grid-connected and island mode. The microgrid is composed by a PV generator, Battery system and a small residential group. This microgrid is located in a Caribbean zone which an average solar radiation greater than 1000 W/m
²
but, with large intermittency due to the movement of cloud and also a high probability of weather disasters. The iBMS considers a fuzzy controller for both grid-connected and island mode. The rules are defined by the behavior of the people living in houses, the intermittent energy available from the PV generator, the state of charge (SOC) of the battery and the contracted power from the electric mains. Also the iBMS considered two blocks of demand respond (DR) using non-critical electric loads available in houses. The main objectives of the iBMS is to supply electric power to houses using the available energy, not to generate disturbance to the electric mains when the microgrid is working in connected mode, and also always to maintain the battery SOC in the possible maximum.