BDCM sensorless control for twelve-step square-wave PWM

Hung-Chi Chen*, Chih Kai Huang, Tzu Yang Tsai

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

After studying the development of BDCM sensorless control with six-step square-wave PWM (SWPWM) and six-step back-EMF detecting scheme (BEDS), the BDCM sensorless control with twelve-step SWPWM and twelve-step BEDS had been proposed and implemented in this paper. The proposed twelve-step BEDS generates the twelve commutation instants from six back-EMF zero-crossings during each cycle where the six-step BEDS generates the six commutation instants from six back-EMF zero-crossings. Since the analysis of six-step BEDS is helpful to develop the twelve-step BEDS, this paper studies the six-step SWPWM and six-step BEDS first and explains why some specific six-step SWPWM type is always used in the six-step BDCM sensorless control. Then, we obtain the specific twelve-step SWPWM types and develop the proposed twelve-step BEDS. From the simulated and experimental results, BDCM sensorless control with twelve-step SWPWM shows less current harmonics than that with six-step SWPWM.

Original languageEnglish
Title of host publication2009 International Conference on Power Electronics and Drive Systems, PEDS 2009
Pages511-516
Number of pages6
DOIs
StatePublished - 1 Dec 2009
Event2009 International Conference on Power Electronics and Drive Systems, PEDS 2009 - Taipei, Taiwan
Duration: 2 Jan 20095 Jan 2009

Publication series

NameProceedings of the International Conference on Power Electronics and Drive Systems

Conference

Conference2009 International Conference on Power Electronics and Drive Systems, PEDS 2009
CountryTaiwan
CityTaipei
Period2/01/095/01/09

Keywords

  • BDCM
  • Sensorless control
  • Twelve-step PWM

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