This document presents a proposal to implement primary source models and availability within grid-forming converters, which must set voltage and frequency of a microgrid. The primary source effect is validated under steady-state and balanced fault conditions. A test system in grid-islanded mode is considered, where the proposed implementation enhances the detail of the representation and allows more realistic conditions in both steady and faulted states. The proposal also allows to inject 1.5 times the rated current under fault condition, so protection strategies can be more straightforward to implement. Considered changes in primary source include 0.2 [p.u] wind speed variation and 0.5 [p.u] irradiance variation, the respective decrement in CIDER output is noticed in the results. Additionally, frequency and voltage variations associated to the primary source change are adequately sustained by the grid-forming CIDER, then the microgrid continues in adequate operation range. Among conclusions, the primary source inclusion through the current limitation, helps the microgrid simulation to be more realistic under steady and faulted conditions.