This paper presents design and validation of a SiC-based 75 kVA Intelligent Power Stage (IPS), comprising DC-DC and DC-AC power stages. The IPS is 3-D packaged on a three-faced utilized heat sink, achieving 5.5 kW/L high-power density, including passives and sensing circuitries. Moreover, intelligent features involve online non-invasive health monitoring of power stage components through Digital Twin (DT). DT also aids in identifying system failure modes, enhancing protection. Lastly, for interoperability, a hierarchical controller Smart Universal Power Electronics Regulator (SUPER) is proposed, which controls the DC-AC stage and monitors health of IPS through control and data communication channels.
