On-Line Automatic Position Compensation Algorithm for Improvement of Position Error of High Speed BLDC Motor

Abstract

This study analyzed the problems in driving a high-speed BLDC motor using a 120 - degree commutation method using a Hall sensor. The BLDC motor which depends on the hall sensor position signal detects a problem that the erroneous position signal and the current delay occur due to the Hall signal and the inductance component of the stator winding. And a compensation control algorithm is applied to solve this problem, and a method to maintain the accurate commutation interval in real time high speed range is presented.