Design of Interleaved Three-Phase DC Transformer With Ingenious Control for Modern Data Centers

Data centers have a pivotal role in the uprising era of industrial IoT and 6G communication. However, sustainability objectives requisite effective energy utilization in data centers in view of high consumption rate. This article proposes an efficient, three-phase semi-converter aided 400 V/48 V DC Transformer (DCTx) for rack-level distribution in data center. The three-phase semi-converter configuration imparts three degrees of control for superior 48 V regulation. In further, the DCTx is equipped with proposed ingenious, load-adaptive control approach. For control efficacy, the proposed control incorporates all possible control variables to ensure effective output voltage control during steady and dynamic states. The experimental results of developed 1 kW prototype suggest the feasibility of the proposed DC Transformer and associated control approach for 400 V/48 V DC data center DC power distribution application.