기존의 AC 전력전달 기반의 데이터센터를 고효율의 DC 데이터센터로 변경에 관한 연구가 활발히 진행중이다. 그 중 랙 준위 DC 전원공급장치는 기존 데이터센터의 전력구조 변화 없이 랙 레벨에서 DC 전원을 서버에 공급하는 방식으로 기존 AC 데이터센터에 적용 가능한 최적의 기술이다. 본 논문은 ETRI가 개발한 데이터센터의 랙 준위 DC 전원공급장치 특징에 관한 내용을 담고 있다. 본 장치는 부하에 따라 효율을 최적으로 제어하는 지능적 제어 기법을 사용하며, 랙 준위 N+1 전력 이중화로 높은 안정성을 제공하고 있다. 또한 랙 준위 전력 및 랙 주위 온/습도정보의 실시간 웹 모니터링 기능을 제공하고 있다.
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