Taylor, Emmanuel
(2012)
Comparative Analysis of Datacenter Electrical Distribution Architectures.
Master's Thesis, University of Pittsburgh.
(Unpublished)
Abstract
This thesis analyzes the propagation of voltage transients within datacenter facilities. Two datacenter distribution architectures are modeled. The first architecture represents the standard AC approach to distributing electric power within a datacenter. This AC system model contains power electronic circuits representing the various components of the system. The second architecture distributes 380 V DC throughout the datacenter facility. This system model also contains power electronic circuits representing the behavior of the various pieces of datacenter equipment. Both architectures are modeled using the PSCAD software package. The datacenter equipment modeled includes AC and DC uninterruptible power supplies, AC and DC server power supplies, equipment used for protection and isolation, as well as the server electronics.
In both cases, the datacenter facility is serviced with electric power through a modeled utility distribution network. This network includes a medium voltage substation model. The substation contains a medium voltage feed, as well as a switched shunt capacitor bank. During the simulation, the capacitor bank is actively connected to the substation bus through the closing action of a circuit breaker. This action creates a voltage transient which propagates through the distribution network.
This thesis analyzes the propagation of voltage transients within datacenter facilities. Two datacenter distribution architectures are modeled. The first architecture represents the standard AC approach to distributing electric power within a datacenter. This AC system model contains power electronic circuits representing the various components of the system. The second architecture distributes 380 V DC throughout the datacenter facility. This system model also contains power electronic circuits representing the behavior of the various pieces of datacenter equipment. Both architectures are modeled using the PSCAD software package. The datacenter equipment modeled includes AC and DC uninterruptible power supplies, AC and DC server power supplies, equipment used for protection and isolation, as well as the server electronics.
In both cases, the datacenter facility is serviced with electric power through a modeled utility distribution network. This network includes a medium voltage substation model. The substation contains a medium voltage feed, as well as a switched shunt capacitor bank. During the simulation, the capacitor bank is actively connected to the substation bus through the closing action of a circuit breaker. This action creates a voltage transient which propagates through the distribution network.
COMPARATIVE ANALYSIS OF DATACENTER ELECTRICAL DISTRIBUTION ARCHITECTURES
Emmanuel J. Taylor, M.S.
University of Pittsburgh, 2012
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This voltage transient is introduced to the entrance of each datacenter facility. Measurements are taken at various points throughout the distribution architectures, observing the propagation of the transient through the various power electronic devices. At the input terminals of the AC and DC server power supplies, the voltage deviations are measured for comparison against applicable manufacturing standards. This is done to assess whether the transients in each architecture fall within acceptable limits.
The analysis shows that each architecture has its specific concerns, with regard to transients, and demonstrates the importance of transient research for datacenters.
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Details
| Item Type: |
University of Pittsburgh ETD
|
| Status: |
Unpublished |
| Creators/Authors: |
| Creators | Email | Pitt Username | ORCID  |
|---|
| Taylor, Emmanuel | ejt7@pitt.edu | EJT7 | |
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| ETD Committee: |
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| Date: |
26 September 2012 |
| Date Type: |
Publication |
| Defense Date: |
3 April 2012 |
| Approval Date: |
26 September 2012 |
| Submission Date: |
5 April 2012 |
| Access Restriction: |
No restriction; Release the ETD for access worldwide immediately. |
| Number of Pages: |
72 |
| Institution: |
University of Pittsburgh |
| Schools and Programs: |
Swanson School of Engineering > Electrical Engineering |
| Degree: |
MS - Master of Science |
| Thesis Type: |
Master's Thesis |
| Refereed: |
Yes |
| Uncontrolled Keywords: |
DC distribution and DC microgrids, distributed resources and microgrids, computer and telecom power supplies, system architecture, UPS and energy storage, circuit modeling and simulation |
| Date Deposited: |
26 Sep 2012 14:05 |
| Last Modified: |
15 Nov 2016 13:57 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/11719 |
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