A microcontroller embedded AD converter based low cost sensorless technique for brushless DC motor drives

Yongjin Kang, Sang Bin Lee, Jiyoon Yoo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

21 Citations (Scopus)

Abstract

A simple low cost sensorless control technique for BLDC motor drives is proposed in this paper. The proposed sensorless technique is based on the terminal voltage measurement, which is the most widely used and accepted approach in industry for BLDC motor control. The proposed method utilizes the microcontroller embedded AD converter, which is common in state-of-the-art low cost microcontrollers, for terminal voltage measurements. Therefore, the zero crossing point (ZCP) can be calculated precisely using simple algebraic equations eliminating the need for analog low pass filters or comparators. It will be shown that the advantages of the proposed technique include 1) no delays in ZCP due to low pass filtering, 2) precise ZCP detection independent of the PWM state, and 3) minimum hardware requirements. Experimental results are also given to verify the advantages of the proposed technique. In addition, it will be shown that the back-emf voltage profile of the open phase can be obtained while the motor is operating without additional hardware. The potential benefits of obtaining the back-emf profile will also be summarized.

Original languageEnglish
Title of host publicationConference Record of the 2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting
Pages2176-2181
Number of pages6
DOIs
Publication statusPublished - 2005
Event2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting - Kowloon, Hong Kong, China
Duration: 2005 Oct 22005 Oct 6

Publication series

NameConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
Volume3
ISSN (Print)0197-2618

Other

Other2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting
CountryChina
CityKowloon, Hong Kong
Period05/10/205/10/6

Keywords

  • BLDC motor
  • Back-emf detection
  • Sensorless drive
  • Terminal voltage sensing

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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  • Cite this

    Kang, Y., Lee, S. B., & Yoo, J. (2005). A microcontroller embedded AD converter based low cost sensorless technique for brushless DC motor drives. In Conference Record of the 2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting (pp. 2176-2181). [1518748] (Conference Record - IAS Annual Meeting (IEEE Industry Applications Society); Vol. 3). https://doi.org/10.1109/IAS.2005.1518748