A series-stacked architecture with 4-to-1 GaN-based isolated converters for high-efficiency data center power delivery

2017 ◽  
Author(s):  
Yizhe Zhang ◽  
Enver Candan ◽  
Robert C. N. Pilawa-Podgurski
Keyword(s):  
Data Center ◽  
High Efficiency ◽  
Power Delivery ◽  
Efficiency Data

An All-SiC Three-Phase Buck Rectifier for High-Efficiency Data Center Power Supplies

2013 ◽  
Vol 49 (6) ◽  
pp. 2662-2673 ◽  
Author(s):  
Fan Xu ◽  
Ben Guo ◽  
Leon M. Tolbert ◽  
Fei Wang ◽  
Benjamin J. Blalock
Keyword(s):  
Data Center ◽  
High Efficiency ◽  
Power Supplies ◽  
Three Phase ◽  
Efficiency Data

scholarly journals Performance evaluation of PI controlled series stacked power delivery architectures for high-efficiency data centers

2020 ◽  
Vol 59 (6) ◽  
pp. 4821-4842
Author(s):  
Yousef Nazih ◽  
Abdelrahman Ismail ◽  
Azza A. Faiad ◽  
Eman Hamdan ◽  
Mostafa S. Hamad ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Data Centers ◽  
High Efficiency ◽  
Power Delivery ◽  
Efficiency Data

Loss and Flow Path Studies on Centrifugal Compressors—Part II

1970 ◽  
Vol 92 (3) ◽  
pp. 287-300 ◽  
Author(s):  
O. E. Balje´
Keyword(s):  
Boundary Layer ◽  
High Efficiency ◽  
Flow Path ◽  
Flow Conditions ◽  
Centrifugal Compressors ◽  
Mixed Flow ◽  
Path Design ◽  
Balanced Flow ◽  
Efficiency Data ◽  
Rotor Flow

The flow conditions in a mixed flow rotor are investigated for a “pressure balanced” flow path design. Boundary layer arguments are applied to calculate the losses in the rotor as well as in the subsequent diffuser section. The resulting efficiency data imply a comparatively high efficiency potential for mixed flow compressors with multiple cascaded components, designed on the premise of a “pressure balanced” rotor flow path.

Rack Server Solution in Data Center

2015 ◽  
Author(s):  
Sheng Kang ◽  
Guofeng Chen ◽  
Chun Wang ◽  
Ruiquan Ding ◽  
Jiajun Zhang ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Power Supply ◽  
Data Center ◽  
Power Efficiency ◽  
High Performance ◽  
High Efficiency ◽  
High Growth ◽  
General Purpose ◽  
Power Supplies

With the advent of big data and cloud computing solutions, enterprise demand for servers is increasing. There is especially high growth for Intel based x86 server platforms. Today’s datacenters are in constant pursuit of high performance/high availability computing solutions coupled with low power consumption and low heat generation and the ability to manage all of this through advanced telemetry data gathering. This paper showcases one such solution of an updated rack and server architecture that promises such improvements. The ability to manage server and data center power consumption and cooling more completely is critical in effectively managing datacenter costs and reducing the PUE in the data center. Traditional Intel based 1U and 2U form factor servers have existed in the data center for decades. These general purpose x86 server designs by the major OEM’s are, for all practical purposes, very similar in their power consumption and thermal output. Power supplies and thermal designs for server in the past have not been optimized for high efficiency. In addition, IT managers need to know more information about servers in order to optimize data center cooling and power use, an improved server/rack design needs to be built to take advantage of more efficient power supplies or PDU’s and more efficient means of cooling server compute resources than from traditional internal server fans. This is the constant pursuit of corporations looking at new ways to improving efficiency and gaining a competitive advantage. A new way to optimize power consumption and improve cooling is a complete redesign of the traditional server rack. Extracting internal server power supplies and server fans and centralizing these within the rack aims to achieve this goal. This type of design achieves an entirely new low power target by utilizing centralized, high efficiency PDU’s that power all servers within the rack. Cooling is improved by also utilizing large efficient rack based fans for airflow to all servers. Also, opening up the server design is to allow greater airflow across server components for improved cooling. This centralized power supply breaks through the traditional server power limits. Rack based PDU’s can adjust the power efficiency to a more optimum point. Combine this with the use of online + offline modes within one single power supply. Cold backup makes data center power to achieve optimal power efficiency. In addition, unifying the mechanical structure and thermal definitions within the rack solution for server cooling and PSU information allows IT to collect all server power and thermal information centrally for improved ease in analyzing and processing.

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