NDLI: Stability Analysis and Dynamic Performance Evaluation of a Power Electronics-Based DC Distribution System With Active Stabilizer

Content Provider	IEEE Xplore Digital Library
Author	Karbalaye Zadeh, M. Gavagsaz-Ghoachani, R. Pierfederici, S. Nahid-Mobarakeh, B. Molinas, M.
Copyright Year	2013
Abstract	The stability of dc microgrids is influenced by the nonlinear behavior of the converter-controlled loads with constant power characteristics. This nonlinear dynamic, in line with reduced size input filters used in the embedded power distribution of transportation systems, has a degrading effect on the dynamic performance and stability of the system. This paper presents the complete stability analysis of a dc distribution system composed of power electronics-based source and load. For this objective, a discrete-time dynamic model is developed and is applied to the studied system. Here, for the first time, the dynamic effect of the load controller is taken into the system model. In the studied system, the load converter is connected in cascade with the rest of the system, and is equipped with an input LC filter, representing a common distributed architecture for the transportation applications. The controller of the source converter employs an active stabilizer to extend the stability margin of the system. This stabilizer uses high-pass-filtered voltage of the dc bus following with a proportional compensator. The dynamic behavior of the controller and the stabilizer is experimented through a series of laboratory tests. Different load dynamics are implemented to demonstrate the impact of slow and fast load dynamics on the stability of the system.
Starting Page	93
Ending Page	102
Page Count	10
File Size	11957363
File Format	PDF
ISSN	21686777
Volume Number	4
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2016-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power system stability Bifurcation Power system dynamics Stability analysis Voltage control Control systems Load modeling power electronics power system dynamics DC-DC power converters transportation DC–DC power converters stability analysis
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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