Abstract: A power bus system for supplying electric power to a load includes a first power bus circuit coupled to a first power source and including a first primary inductor, a second power bus circuit coupled to a second power source and including a second primary inductor, and a third power bus circuit coupled to the load and including a first secondary inductor electrically connected in series with a second secondary inductor. The first primary inductor and the first secondary inductor are arranged as a first transformer, the second primary inductor and the second secondary inductor are arranged as a second transformer, and the first power bus circuit is electrically isolated from the second power bus circuit.