Sensorless control of brushless drives using back emf mapping

Markos Tawadros, Jamal Rizk, Mahmood Nagrial

Research output: Chapter in Book / Conference PaperConference Paperpeer-review

2 Citations (Scopus)

Abstract

A simple inexpensive technique is presented in this paper for sensorless control of brushless DC motors (BLDCMs) based on the back emf (BEMF) measurement. Through the presented algorithm, the point at which the power is switched on or off to the phases, is calculated with accuracy in simple mathematical equations by capturing samples of the BEMF which are mapped back to reference values. The sampling utilizes the analog to digital converter (ADC) implemented in microcontrollers which eliminates using filters, comparators, and the delays called through look up tables after the detection of the zero crossing point (ZCP). Experimental results are also given to verify the proposed algorithm.

Original languageEnglish
Title of host publication2009 International Conference on Computer and Electrical Engineering, ICCEE 2009
Pages135-138
Number of pages4
DOIs
Publication statusPublished - 2009
Event2009 International Conference on Computer and Electrical Engineering, ICCEE 2009 - Dubai, United Arab Emirates
Duration: 28 Dec 200930 Dec 2009

Publication series

Name2009 International Conference on Computer and Electrical Engineering, ICCEE 2009
Volume1

Conference

Conference2009 International Conference on Computer and Electrical Engineering, ICCEE 2009
Country/TerritoryUnited Arab Emirates
CityDubai
Period28/12/0930/12/09

Keywords

  • BEMF detection
  • Brushless motor control
  • Sensorless control

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