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Article: Variable structure modeling and design of switched-capacitor converters

TitleVariable structure modeling and design of switched-capacitor converters
Authors
KeywordsNonlinearity
Pulse width modulation (PWM)
Stability
Switched-capacitor (SC) converters
Variable structure feedback control
Issue Date2009
Citation
Ieee Transactions On Circuits And Systems I: Regular Papers, 2009, v. 56 n. 9, p. 2132-2142 How to Cite?
AbstractSwitched-capacitor (SC) converters are a type of variable structure systems. The conventional approach of maintaining regulation in these converters is a feedback control developed from linear systems theory, and it is based on the approximate small-signal linearized models of these circuits. However, the simplicity of such an approach sacrifices performance (poor transient response and sometimes steady-state instability are the result of a design based on the use of an approximate linearization) for convenience and cost. This paper discusses the (SC) converters from the viewpoint of nonlinear systems, and based on this, takes a variable structure feedback approach. The (SC) circuits theory is revisited, and a new approach of modeling, which gives an accurate nonlinear description of their operation is discussed. Based on the principle of energy balance applied to the output filter capacitor, an exact relationship between the instantaneous output and input currents in the charging and discharging phases is derived, leading to the derivation of a unique large-signal dynamic model for both alternative operating phases. Together with a defined switching function, it forms the proposed variable structure model. The resulting solution shows that a nonlinear approach can deliver an improved performance in the dynamic and steady-state behavior. Experimental results performed on a two-phase (SC) converter verify the theory. © 2009 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/148900
ISSN
2015 Impact Factor: 2.393
2015 SCImago Journal Rankings: 1.394
ISI Accession Number ID
Funding AgencyGrant Number
Hong Kong Polytechnic University
Funding Information:

This work was supported by Hong Kong Polytechnic University under an internal competitive research grant under Grant A- PB0Z. This paper was recommended by Associate Editor H. S. Chung.

References

 

DC FieldValueLanguage
dc.contributor.authorTan, SCen_HK
dc.contributor.authorBronstein, Sen_HK
dc.contributor.authorNur, Men_HK
dc.contributor.authorLai, YMen_HK
dc.contributor.authorIoinovici, Aen_HK
dc.contributor.authorTse, CKen_HK
dc.date.accessioned2012-06-20T06:16:12Z-
dc.date.available2012-06-20T06:16:12Z-
dc.date.issued2009en_HK
dc.identifier.citationIeee Transactions On Circuits And Systems I: Regular Papers, 2009, v. 56 n. 9, p. 2132-2142en_HK
dc.identifier.issn1549-8328en_HK
dc.identifier.urihttp://hdl.handle.net/10722/148900-
dc.description.abstractSwitched-capacitor (SC) converters are a type of variable structure systems. The conventional approach of maintaining regulation in these converters is a feedback control developed from linear systems theory, and it is based on the approximate small-signal linearized models of these circuits. However, the simplicity of such an approach sacrifices performance (poor transient response and sometimes steady-state instability are the result of a design based on the use of an approximate linearization) for convenience and cost. This paper discusses the (SC) converters from the viewpoint of nonlinear systems, and based on this, takes a variable structure feedback approach. The (SC) circuits theory is revisited, and a new approach of modeling, which gives an accurate nonlinear description of their operation is discussed. Based on the principle of energy balance applied to the output filter capacitor, an exact relationship between the instantaneous output and input currents in the charging and discharging phases is derived, leading to the derivation of a unique large-signal dynamic model for both alternative operating phases. Together with a defined switching function, it forms the proposed variable structure model. The resulting solution shows that a nonlinear approach can deliver an improved performance in the dynamic and steady-state behavior. Experimental results performed on a two-phase (SC) converter verify the theory. © 2009 IEEE.en_HK
dc.languageengen_US
dc.relation.ispartofIEEE Transactions on Circuits and Systems I: Regular Papersen_HK
dc.subjectNonlinearityen_HK
dc.subjectPulse width modulation (PWM)en_HK
dc.subjectStabilityen_HK
dc.subjectSwitched-capacitor (SC) convertersen_HK
dc.subjectVariable structure feedback controlen_HK
dc.titleVariable structure modeling and design of switched-capacitor convertersen_HK
dc.typeArticleen_HK
dc.identifier.emailTan, SC:sctan@hku.hken_HK
dc.identifier.authorityTan, SC=rp01606en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1109/TCSI.2008.2010149en_HK
dc.identifier.scopuseid_2-s2.0-70349246571en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-70349246571&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume56en_HK
dc.identifier.issue9en_HK
dc.identifier.spage2132en_HK
dc.identifier.epage2142en_HK
dc.identifier.isiWOS:000269715300002-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridTan, SC=26642772000en_HK
dc.identifier.scopusauthoridBronstein, S=7003798246en_HK
dc.identifier.scopusauthoridNur, M=24921630500en_HK
dc.identifier.scopusauthoridLai, YM=7401512093en_HK
dc.identifier.scopusauthoridIoinovici, A=7003591597en_HK
dc.identifier.scopusauthoridTse, CK=7103295097en_HK
dc.identifier.citeulike5207167-

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