Investigation of time domain design of digital controllers for PWM converters

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1 Scopus citations

Abstract

A design method for digital controller of PWM DC-DC converters was developed, tested by simulations and verified experimentally. The proposed approach is based on the fact that the closed loop response of a digitally controlled system is largely determined by the first few samples of the compensator. This concept is used to fit a digital PID template to the desired response. The proposed controller design method is carried out in the time domain and thus, bypasses errors related to continuous o discrete domain transformation and discretization. A digital PID controller for a Buck type converter was implemented experimentally on a TMS320LF2407 DSP core. The measured closed loop attributes were 3.5KHz bandwidth and phase margin of 400. Good agreement was found between the design goals and the experimentally determined response.

Original languageEnglish
Title of host publication2006 IEEE 24th Convention of Electrical and Electronics Engineers in Israel, IEEEI
Pages300-304
Number of pages5
DOIs
StatePublished - 1 Dec 2006
Event2006 IEEE 24th Convention of Electrical and Electronics Engineers in Israel, IEEEI - Eilat, Israel
Duration: 15 Nov 200617 Nov 2006

Publication series

NameIEEE Convention of Electrical and Electronics Engineers in Israel, Proceedings

Conference

Conference2006 IEEE 24th Convention of Electrical and Electronics Engineers in Israel, IEEEI
Country/TerritoryIsrael
CityEilat
Period15/11/0617/11/06

Keywords

  • Digital control
  • PID
  • PWM converters
  • Time domain design

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