In this paper, a strategy for controlling the generated power from wind, solar, and battery sources in an autonomous and isolated microgrid is proposed. The power system comprises a power electronic converter powered by a battery, enabling bi-directional AC-DC and DC-DC operations to function as a grid follower. The operation of the microgrid, in both grid to battery (G2B) and battery to grid (B2G) modes, is explained and analyzed, taking into account the presence of an energy storage system (ESS). Power mismatch detection is carried out, and the battery-to-grid (B2G) and grid-to-battery (G2B) operations are determined based on this detection signal. Furthermore, a MATLAB simulation model is developed, incorporating an active load/source battery, a variable load, two energy sources, and a grid-forming converter. The performance of the control algorithm is tested in B2G and G2B operations, producing satisfactory results.