Cascade controller for DC/DC buck convertor

K. M. Tsang, Wai Lok Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

35 Citations (Scopus)

Abstract

In order to deal with the increasing demand for good load and supply-voltage regulation of DC/DC convertors, a new cascade controller is proposed. The control of DC/DC buck converter is first decomposed into a primary voltage-control loop and a secondary current-control loop. The cascade controller is then implemented based on the buck-converter settings with the dynamics of the secondary loop much faster than these of the primary loop. A robustness analysis of the cascade controller against load changes and supply changes is presented. Experimental results are included to demonstrate the effectiveness of the proposed control scheme over a conventional single-loop PI controller. The proposed controller can be implemented as a low-cost addon to a conventional single-loop controller. Detail design equations are presented.
Original languageEnglish
Pages (from-to)827-831
Number of pages5
JournalIEE Proceedings: Electric Power Applications
Volume152
Issue number4
DOIs
Publication statusPublished - 1 Jul 2005

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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