New silicon carbide power module delivers 5x energy for grids

The National Renewable Energy Laboratory (NREL) has developed the Ultra-Low Inductance Smart (ULIS) power module, a compact silicon carbide device that delivers five times greater energy density than previous designs while being smaller and lighter. Operating at 1200 volts and 400 amps, ULIS is designed for high-intensity applications such as data centers, microreactors, next-generation aircraft, military vehicles, and power grids. Its key innovation lies in drastically reduced parasitic inductance—seven to nine times lower than current state-of-the-art modules—enabling ultrafast, ultraefficient electrical switching that maximizes usable power output and improves overall energy efficiency. ULIS features a unique flat, octagonal design that allows more semiconductor devices to be housed in a smaller footprint, enhancing compactness and weight reduction. This design also facilitates maximum magnetic flux cancellation, contributing to its low-loss, high-efficiency electrical performance. Additionally, ULIS incorporates advanced self-monitoring capabilities to predict component failures,