| Abstract |
This paper presents a magnetically integrated isolated bidirectional three-port DC-DC converter (TPC)that includes an integrated dual active bridge converter (DAB) and non-isolated bi-directional DC-DCconverter (NBC), each of which can be independently controlled. The proposed TPC simultaneouslyuses large, small, and magnetizing inductances, of which the small and magnetizing inductances areused for the DAB function, while the large inductance is used for the TPC function. The proposedmagnetic component can function as any of the three inductances in the TPC. We constructed a 750 W,175 kHz prototype of the proposed TPC along with an example of a conventional TPC and measuredtheir respective efficiencies. The results show the efficiencies of the integrated TPC were all above90\% across the entire range of output power and were nearly equal to those of the conventional device.However, compared to the conventional type, the magnetic components in the proposed converter were10\% smaller, and the overall size of the converter was 33\% smaller. |
