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Title: Bifurcation analysis and experimental study of a multi-operating-mode photovoltaic-battery hybrid power system
Authors: Xiong, X 
Tse, CK 
Ruan, X 
Issue Date: Sep-2015
Source: IEEE journal on emerging and selected topics in circuits and systems, Sept. 2015, v. 5, no. 3, p. 316-325
Abstract: Stand-alone hybrid renewable power generation systems have gained popularity in recent years. However, due to the intermittent nature of the renewable resources, hybrid renew- able power generation systems are often designed to operate with multiple structures and multiple operating modes. The design for stable operation of such systems requires consideration of the sta- bility conditions for all possible structures and operating modes. A stand-alone photovoltaic-battery hybrid power system is studied for illustrating the possible complex behavior in this paper. We reveal smooth bifurcation, including slow-scale Neimark–Sacker bifurcation, fast-scale period-doubling bifurcation as well as coexisting bifurcation. Under certain conditions, when the system switches its operating mode, a nonsmooth bifurcation, manifested as a jump between stable and unstable behavior, can also be observed. Moreover, a detailed analysis based on a discrete-time mapping model is performed to evaluate the stability boundaries of the system. Extensive experiments verify the analysis and simulated results
Keywords: Bifurcation
Fast-scale instability
Low-scale instability
Photovoltaic-battery hybrid system
Publisher: Institute of Electrical and Electronics Engineers
Journal: IEEE journal on emerging and selected topics in circuits and systems 
ISSN: 2156-3357
EISSN: 2156-3365
DOI: 10.1109/JETCAS.2015.2462015
Rights: © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
The following publication X. Xiong, C. K. Tse and X. Ruan, "Bifurcation Analysis and Experimental Study of a Multi-Operating-Mode Photovoltaic-Battery Hybrid Power System," in IEEE Journal on Emerging and Selected Topics in Circuits and Systems, vol. 5, no. 3, pp. 316-325, Sept. 2015 is available at
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