Multiple outputs for offsetConverter

[drmattimoli]

Considering the Converter class implementation, is there a reason for the offsetConverter to not be able to provide multiple outputs? This could be very useful, e.g. when augmenting an existing energysystem implementation with partload efficiency.

[p-snft]

Hi @drmattimoli, I really see the point. Here is a bit of background:

The Converter relates all inputs with all outputs. This is only possible because the relations are linear without an offset. In principle, it was possible to have one input but multiple outputs for the OffsetConverter. So, the Converter can do N:M connections with arbitrary N, M. The OffsetConverter could do 1:M, if we implemented that. However, you achieve exactly the same by using multiple OffsetConverters sharing the same Converter as their source. For M:1 conversion, you will always have do it that way. So, for the sake of consistence, OffsetConverter can only do 1:1.