Title :
Commutation instant detector for sensorless drive of BLDC motor
Author :
Kim, T.Y. ; Lyou, J.
Author_Institution :
Dept. of Electron. Eng., Chungnam Nat. Univ., Daejeon, South Korea
Abstract :
A commutation instant detection circuit has been designed and implemented for use in the sensorless drive of a brushless DC (BLDC) motor. The circuit consists simply of differential amplifiers and comparators, and detects the zero-crossing point of the back electromotive force difference. The circuit output is identical to that of the Hall sensor signal.
Keywords :
brushless DC motors; comparators (circuits); differential amplifiers; BLDC motor; Hall sensor signal; brushless DC motor; commutation instant detection circuit; comparators; differential amplifiers; electromotive force; sensorless drive;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.1956
