| Title |
Analysis and Design of Quadruple-Active-Bridge Converter Employing Passive Power Decoupling Capability |
| Authors |
Chang-Woo Yun ; Jun-Young Lee ; Ju-Won Baek ; Jee-Hoon Jung |
| DOI |
https://doi.org/10.6113/TKPE.2022.27.2.157 |
| Keywords |
DC Microgrid; Quadruple-Active-Bridge (QAB); Power Decoupling; Leakage Inductance |
| Abstract |
This study proposes an enhanced quadruple-Active-Bridge (QAB) converter that can solve power coupling problems. By adopting a multiple winding transformer, the equivalent circuit of a conventional QAB converter has power couplings between arbitrary output ports. This coupling is an unintended power relationship that complicates the regulation of output voltage of the multiple ports. The proposed converter can carry out power decoupling by changing the arrangement of the coupling inductor. Power transfer equations for the proposed converter and its operating principles are analyzed in detail. The power coupling caused by the transformer’s leakage inductance is verified by using a proposed coupling factor that presents the relationship between inductance ratio and coupling power. In addition, the decoupling power control performance of the proposed converter is verified by simulation and a 3 kW prototype converter. |