Higher-voltage DC Power-supply System
- Technological fields
- Telecommunications Network Technologies
- Keyword
- DC power supply
- Higher voltage
- Energy saving
- Laboratory organization
- NTT Energy and Environment Systems Laboratories
Overview
As ICT services continue to grow in popularity, the power consumption of ICT equipment continues to rise. This rise in power consumption is linked, in turn, to increased operational costs and environmental damage due to CO2 emission. The developed high-voltage DC power-supply system supplies electricity (at DC 380V) to ICT equipment housed in data centers. Implementing this system makes it possible to construct an “Earth friendly” power-supply system that is more efficient, more reliable, and more economical than conventional AC power supplies.
Features
- Thanks to the few steps involved in AC-to-DC (and vice versa) power conversion, the DC power supply
- cuts power-conversion loss and reduces power consumption by about 15% in comparison to AC power supplies.
- has low fault probability and high reliability.
- Since the high-voltage DC power supply can supply power at lower current than that of a DC-48V power supply, it is possible to scaledown cables, cut installation costs, and improve latitude in equipment placement.
- Voltage-fluctuation suppression technology accumulated in developing DC-48V power supplies is utilized, and a stable power-supply system is created.
- In consideration of safety regarding the human body, a configuration with no exposed live-parts is adopted.
Application scenarios
- As a result of installing the system in data centers, telecommunications buildings, and so on,
- it is possible to offer “green data centers”—which have a low environmental impact.
- it is anticipated that power consumption concerning ICT will be cut.
- This work was performed in collaboration with NTT Facilities.
