Current Balancing Technique in Symmetrical Configuration of Quad-Active-Bridge Converter using Integrated Magnetic Current Balancing Cells

in this paper, integrated magnetic current balancing (IMCB) cell is proposed to balance the currents in symmetrical configuration of quad-active-bridge (QAB) converter without any dedicated controller. Proposed IMCB cell is the magnetic integration of the QAB inductors required for power transfer and zero voltage switching (ZVS). Therefore, it does not increase the overall magnetic volume of converter. Current balancing performance of the proposed IMCB cells is effectively verified by a 2kW laboratory prototype.