Siemens and Reinhausen are developing direct current power solutions for AI data centres. The partners are working on a solid-state transformer (SST) for 800VDC required in data centres. Their modular SST will connect to grid voltage of up to 36kV with output of 800VDC. The two companies promise a robust system architecture that increases performance yet at lower footprint and costs.
“The AI era demands a new paradigm in power delivery. Our joint technology enables AI data centres to operate with the efficiency and reliability they require,” said Wilfried Breuer, Managing Director of Reinhausen.
In AI data centres, for an 800VDC distribution system, a medium-voltage solid-state transformer provides a compact, efficient and galvanically isolated alternative to conventional multistage AC/DC power-conversion architectures. In this architecture, medium-voltage AC is converted to 800VDC and distributed to the data centres, reducing intermediate conversion stages and enabling more efficient power delivery to high-density AI infrastructure.
MR is a manufacturer of voltage regulation technology for power transformers and Siemens has expertise in power electronics and electrical power solutions.
“Combining the technological strength of Siemens and MR will shape the future of power solutions for AI data centeres. Solid-state transformers are critical for these large and power intensive structures. They enable higher efficiency, direct grid-to-rack DC conversion, and a reduced footprint. By responding to load changes in milliseconds, they seamlessly handle the extreme power swings of AI training workloads and avoid downtime while cutting costs. This collaboration will further strengthen our leading position in the electrification of data centers,” said Stephan May, CEO of Electrification and Automation at Siemens.
