A new source-to-rack power architecture combines high-voltage DC distribution, solid-state conversion, protection, and cooling optimisation to reduce conversion losses and infrastructure footprint in high-density computing facilities.
A new direct-current power architecture is being developed to address the rising electrical demands of AI data centres, where next-generation computing racks are expected to require 1MW or more, compared with nearly 200kW for many current systems. The ABB Infinitus DC Portfolio integrates power conversion, distribution, protection, and cooling technologies into a source-to-rack architecture for high-density computing infrastructure.
At the centre of the portfolio is the Infinitus solid-state transformer, which enables conversion and distribution at higher DC voltages while reducing the physical footprint of power infrastructure. The architecture supports 800VDC distribution, helping eliminate some of the conversion stages associated with conventional AC-based data-centre power systems. This can reduce conversion and heat losses while making more electrical capacity available for computing loads.
The key features are:
- Supports DC-native and hybrid AC/DC architectures
- Designed for AI racks reaching 1MW and beyond
- Integrates medium-voltage powertrains
- Includes DC overcurrent protection
- Targets applications beyond data centres, including manufacturing and marine systems
The portfolio is designed for both DC-native and hybrid AC/DC data-centre architectures, allowing operators to integrate DC power into existing infrastructure rather than requiring a single fixed electrical topology. Its DC power-distribution system is intended to deliver higher power density within a smaller infrastructure footprint, while dedicated DC protection safeguards equipment against overcurrent conditions.
The architecture also incorporates DC-connected variable-speed drives and motors for cooling optimisation. By extending DC power beyond computing equipment into cooling infrastructure, the system aims to reduce energy consumption across both white-space and supporting facility areas.The portfolio is divided into five functional building blocks: medium-voltage powertrains, DC sources and power quality, DC power distribution, DC power protection, and cooling optimisation. Together, these provide a complete electrical path from grid or on-site generation to computing racks.
For a 500MW data-centre campus, the company cites analysis indicating that DC distribution could deliver more than 5% energy-efficiency gains. Such an improvement could make an additional 25MW available for IT loads while reducing infrastructure requirements.
The technology is also being positioned for industrial buildings, manufacturing facilities, renewable-energy installations, and marine operations, where high power demand and conversion efficiency are important. The first DC-native facilities using the complete portfolio are expected to become operational within two to three years, with several major components planned for production within the next year.
Click here for the original announcement.
