Small Signal Stability Analysis of a Commercial DC Distributed Power System
Date Issued
2007
Date
2007
Author(s)
Yang, Cheng-Chung
DOI
zh-TW
Abstract
An intermediate bus architecture (IBA), consisting of a bus converter (BC) and point of loads (POLs), has become very popular in dc-dc distributed power system applications. When a BC modules are connected with POLs, system interactions may cause system instability or performance degradation. It was previously reported that by comparing the output impedance of the source impedance and the input impedance of a single POL, one can avoid system instability and alleviate potential performance degradation. Therefore impedance of individual subsystems must be analyzed carefully before the system coordinated.
In this thesis, this theory was applied to a commercial IBA with multiple POLs. Impedance characteristics of POL section and BC modules were used with Nyquist theorem to define the limitation of impedances and ensure the IBA system stability margin. Test results and mathematical calculations were compared with good agreement.
Subjects
分散式電壓源系統
中轉排線架構
阻抗分析
小信號穩定度
Distributed power system
intermediate bus architecture
impedance criterion
small-signal analysis
Type
thesis
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