NDLI: Small-signal modeling and analysis of battery-supercapacitor hybrid energy storage systems

Content Provider	IEEE Xplore Digital Library
Author	Yu Zhang Zhenhua Jiang Xunwei Yu
Copyright Year	2009
Description	Author affiliation: Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL 33146 USA (Yu Zhang; Zhenhua Jiang; Xunwei Yu)
Abstract	The battery/supercapacitor hybrid energy storage system actively combines two energy storage devices to achieve better power and energy performances. This paper presents a detailed small-signal mathematical model that can represent the dynamics of the converter-interfaced energy storage system around the steady-state operating point. This model takes into account the effects on the currents of a variety of factors such as the voltage-current characteristics of individual energy storage devices, power converter and filter parameters, and controller parameters. The proposed model considers the variations in the battery current, supercapacitor current and DC bus voltage as state variables, the variations in the power converter duty cycles as the control input, and the variations in the battery voltage, supercapacitor voltage and load current as external disturbances. Frequency-domain model and control strategies for the power sharing between the battery and supercapacitor are developed based on the small-signal model of the hybrid energy system. Frequency-domain characteristics of the open-loop and closed-loop systems are analyzed. Time-domain simulation is used to verify the system operation. The effects of system and controller parameters on the system performance are also studied.
Starting Page	1
Ending Page	8
File Size	1354390
Page Count	8
File Format	PDF
ISBN	9781424442416
ISSN	19449925
DOI	10.1109/PES.2009.5275757
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-07-26
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Energy storage Power system modeling Batteries Supercapacitors Open loop systems Voltage control Frequency domain analysis Mathematical model Steady-state Power filters small-signal model Hybrid energy storage power sharing battery supercapacitor control
Content Type	Text
Resource Type	Article

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