Implementation of sliding mode control for current sharing in fixed frequency voltage regulator modules

College

College of Computer Studies

Department/Unit

Computer Technology

Document Type

Archival Material/Manuscript

Publication Date

1-17-2013

Publisher

IEEE

Abstract

Voltage regulator modules (VRMs) have to maintain perfect current sharing between modules in both static and dynamic loading. In this study, sliding mode control was applied to both the voltage loop and the current share loop of the two-phase VRM with the aim of providing an effective current sharing scheme. Unlike other sliding mode control implementation that uses infinite switching frequency in its control method, fixed switching frequency was used. Derivation for the fixed frequency sliding mode control was done in the analog domain and transformed into the digital domain. A simulation model using PSIM was developed for both the analog and the digital control implementations. Results show that current sharing is achieved in both the analog and the digital control.

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Digitial Object Identifier (DOI)

10.1109/TENCON.2012.6412220

Disciplines

Controls and Control Theory | Electrical and Computer Engineering

Keywords

Sliding mode control; Voltage regulators

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