AI Data Center: Server-Side Power Management Transition from AC to DC

Traditional AC Server Power Management (Upper Section)

AC Power Distribution Chain

1. 6.6kV to 380V AC: Primary voltage step-down transformation
2. UPS (Outage Fast Recovery): Backup power for short-term outages
3. Distribution Cutoff, Regulation: Power distribution control and voltage regulation
4. AC to DC for Server: Final AC-DC conversion at server level
5. Output: AC 380V (KW level)

New DC Server Power Management Technology (Lower Section)

DC Power Distribution Chain

1. AC to DC Conv 800V HVDC: Direct high-voltage DC conversion
2. ESS (Energy Storage System): Integrated energy storage solution
3. Digital Control: Advanced digital power management
4. DC to DC Down for Server: DC-DC step-down conversion for servers
5. Output: HVDC 800V (MW level)

Key Technology Advantages of DC Transition

Power Quality Enhancement

• PF Up, Harmonics Dn: Improved power factor and reduced harmonic distortion

Advanced Backup Capability

• Long time Backup Peak Shaving: Extended backup duration with intelligent peak load management

Operational Efficiency

• Lower Loss, High Density, Easy Control: Reduced conversion losses, compact footprint, simplified control architecture

Scalable Power Delivery

• High Power Usage Available: Enhanced power capacity to meet AI server demands

Server-Side Power Management Transformation

This diagram illustrates the technological shift in server-side power management from traditional AC distribution (KW-level) to advanced DC distribution (MW-level), specifically designed to address the high-power requirements and efficiency demands of AI data centers. The DC approach eliminates multiple AC-DC conversion stages, resulting in improved efficiency and better power management capabilities.

With Claude