Active Front End (AFE) Power Converter

The rapid growth of AI workloads is pushing rack power densities beyond the practical limits of traditional data center power architectures. 800 VDC distribution enables megawatt-class power delivery at lower current and with fewer conversion stages.

Hitachi Energy’s AFE efficiently converts AC power to the 800 VDC bus, providing a scalable foundation for high-density rack architectures while simplifying the integration of grid power, energy storage, and other DC resources.

Designed for high-density data centers
Fast response and advanced active power management help meet the operational requirements of modern computing environments while supporting reliable power delivery.

Improve efficiency and reliability
By reducing conversion stages, AFE technology can improve end-to-end efficiency by up to five percent, ensuring better energy utilization.

Reduce complexity
AFE power converters integrate with complementary Hitachi Energy data center solutions to strengthen power resilience, reduce outage risk, and ensure continuous operations while supporting the transition to a carbon-negative business future.

Scalability
Enable 800 VDC power distribution for increasingly power-dense AI infrastructure, with an architecture designed to scale to MW-class racks.

Efficiency
Reduce conversion stages and associated losses by bringing efficient AC-to-DC conversion closer to the data center power backbone.

Footprint
Reduce current through higher-voltage DC distribution, enabling smaller conductors, lower copper requirements, and reduced distribution losses.

Flexibility
Establish a common DC backbone that facilitates integration of multiple DC energy resources while supporting resilient, grid-connected operation.

Medium-voltage DC conversion
Power is converted at the medium-voltage level, reducing conversion stages and improving overall system efficiency.

Advanced active power control
Advanced active power management and fast response capabilities help meet the demanding operational requirements of modern data centers.

Optimized for 800 VDC architectures
The converters support advanced 800 VDC grid-to-rack architectures for efficient power delivery in high-density computing environments.

Integration-ready design
The integration-ready design works seamlessly with complementary Hitachi Energy data center power solutions to simplify deployment and strengthen power resilience.