The first and second isolation power stages 210 function as full bridge converters. The transformer 222 provides for power transfer between the two interior power stages 210 in the form of voltage inductance, while also providing for galvanic isolation between the terminal stages 300 of the exemplary A-PEBB LRU 200.A as a whole. The entire interior section 232—that is, the transformer 222 proper, along with the two interior power stages 210—may be together viewed as the elements of a compact high frequency (100-200 kHz) solid state isolation transformer 232.
In some embodiments of the present system and method, both of the isolation power stages 210 are provisioned for handling direct currents (DC) so that junctures A2/B2 and X3/Y3 are direct current only. One of the two isolation power stages 210.1, 210.2 provides for high frequency power conversion. However, because the terminal power stages 300 are adaptable, both end terminals X0/Y0 and X5/Y5 of the A-PEBB LRU 200.A can be configured for either of AC or DC.
For the exemplary A-PEBB LRU 200.A of