The 3-phase RLC block offers two modeling options: 'composite three-phase' and 'expanded three-phase'. The 'composite three-phase' ports represent three individual electrical conserving ports with a single block port and 'Expanded three-phase ports' represent the individual phases of a three-phase system using three separate electrical conserving ports.
However, connecting 'RLC block' with expanded port to a voltage source modeled as a 'composite' system results in an error. The issue can be resolved by changing the modeling option of the RLC block to 'composite three-phase' in the electrical connection settings.
Kindly refer to the below documentation of “RLC three phase” for more details:
I hope this helps!
