For higher voltage and higher power applications, one, two, or more power converters 100 may be employed; and further, each power converter 100 may have two or more A-PEBB LRUs 200.A. Each A-PEBB LRU 200.A within a single power converter 100 is then a modular building block that can be stacked-up/networked (in parallel and/or in series); the combined A-PEBB LRUs 200.A (possibly in combination with one or more non-configurable PEBB LRUs 200.nc) together scale-up to form a larger converter with multiple PEBB LRUs 200.A (200.nc) to meet the higher voltage and power requirements. For brevity and simplicity of exposition, most of this documented addresses only the A-PEBB LRUs 200.A. With the self-configurability/adaptability of two or more A-PEBB LRUs 200.A, the scaled-up A-PEBB converter 100.A, taken as a whole, can be in any of the power conversion modes listed above in the exemplary Table Λ 390 of FIG. 3C.

FIG. 1, already discussed above, illustrates in schematic form an exemplary an exemplary A-PEBB converter 500, according to the present system and method. FIG. 5 presents in more detail another exemplary A-PEBB converter 500, according to the present system and method. The exemplary A-PEBB converter 500 of FIG. 5 may be, for example, a megawatt-scale low voltage (LV) DC (up to 1000 V DC) to medium voltage (MV) AC (e.g. 4160 V AC) A-PEBB power converter 500. In one exemplary embodiment, A-PEBB Power Converter 500.A may have three power resource connections 505 for three different power resources 110, which can be switchably connected or disconnected via resource switches RS.