Open AccessNew sensorless commutation method for BLDC motors based on the line‐to‐line flux linkage theory
Author(s) -
Jafarboland Mehrdad,
Silabi Mohammad Hadi Rismani
Publication year - 2019
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.815
H-Index - 97
eISSN - 1751-8679
pISSN - 1751-8660
DOI - 10.1049/iet-epa.2018.5356
Subject(s) - commutation , flux linkage , control theory (sociology) , counter electromotive force , rotor (electric) , correctness , dc motor , torque ripple , computer science , torque , kalman filter , line (geometry) , motor drive , control engineering , engineering , voltage , direct torque control , control (management) , induction motor , mathematics , physics , algorithm , artificial intelligence , electrical engineering , thermodynamics , geometry , mechanical engineering
Sensorless brushless DC (BLDC) motor control is one of today's industry's requirements. The quality of this control is strongly dependent on the exact identification of the rotor angle for switching. In this study, a new sensorless BLDC motor control is introduced that could determine the exact time of the commutation. This method is based on the line‐to‐line flux linkage. The unscented Kalman filter method is used to identify the parameters in the proposed method. In comparison with back electromotive force based methods, this approach has advantages such as reduction of torque ripple due to commutation operations and resistance to motor parameters’ changes. The correctness of the method and the performed comparison is proved by the computer simulation and practical results.