Modular Multiport Converter with Flexible Output Forms and Simple Control

This paper proposes a modular multiport converter that offers flexible output forms, a simple control scheme, and high scalability at the output side. The converter's output ports can provide a range of output forms, including dc, ac with different operating frequencies, and changeable output forms (ac to dc or dc to ac), making it suitable for multiple application scenarios. The converter's topology design effectively avoids the cross-regulation problem among the output ports, which significantly reduces control complexity. Thanks to its modular circuit configuration and simplified control scheme, the converter has high scalability. To verify the theoretical analysis, an illustrative converter with three output ports is built in PSIM. The results demonstrate the effectiveness of the proposed converter in providing flexible and scalable power conversion solutions for various applications.