Scalable Modular Power Converter Design: A PoE-Based Approach for Enhanced Adaptability and Synchronization

This paper presents a modular converter design, focusing on scalability and adaptability. As power levels increase, traditional design and control procedures may become impractical, necessitating reevaluation. A scalable modular power converter offers enhanced flexibility and adaptability across various energy conversion systems. However, challenges arise in synchronizing switching behavior, leading to increased current harmonics and common-mode noise compared to traditional designs. Previous solutions include fiber-optic communication and EtherCAT protocol integration. This paper proposes an innovative solution utilizing Power over Ethernet (PoE) protocol for both communication and auxiliary power transmission. The use of shielded Category 7 Ethernet cables improves noise immunity compared to unshielded cables, enhancing overall system performance and reliability. This approach streamlines connectivity and functionality while offering a cost-effective solution for scalable modular power converters.