典型文献
Data Center Power System Stability-Part Ⅱ:System Modeling and Analysis
文献摘要：
This is the second part of a two-part paper on stability study of data center power systems by impedance-based methods.As the basis for this application,Part Ⅰ[1]developed new impedance models for power supplies that are the most dominant loads in data centers.This second part presents system modeling and analysis methods that can support practical data center power system design to ensure stability.The proposed methods comprise:1)building distribution network modeling by impedance scaling;2)system modeling and model reduction based on equivalent source impedance;3)system stability anal-ysis in the sequence domain to include zero-sequence dynamics;and 4)expansion of system models and analyses to account for network asymmetry and uneven loading.These methods are used to characterize practical resonance problems observed in data centers,explain their root causes,and develop solutions.For systems using Y-connected power supply units(PSUs),the zero sequence is identified as the weakest link and the first to become unstable.The expanded system model and analysis reveal a new,differential-mode instability that is responsible for high frequency resonances.To guarantee system stability,new impedance-based product and system design specifications are developed based on sufficient conditions derived from the Nyquist stability criterion.Laboratory and field measurements are presented to substantiate the proposed methods and conclusions.
文献关键词：
中图分类号：
作者姓名：
Jian Sun;Melaku Mihret;Mauricio Cespedes;David Wong;Mike Kauffman
作者机构：
Rensselaer Polytechnic Institute-ECSE,110 8th Street Room CⅡ 8015,Troy 12180,United States;Meta Platforms Inc.,1601 Willow Rd,Menlo Park,California 94025-1452,United States
文献出处：
引用格式：
[1]Jian Sun;Melaku Mihret;Mauricio Cespedes;David Wong;Mike Kauffman-.Data Center Power System Stability-Part Ⅱ:System Modeling and Analysis)[J].中国电机工程学会电力与能源系统学报（英文版）,2022(02):420-438
A类：
PSUs
B类：
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AB值：
0.549241
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