Title :
A Novel Twelve-Step Sensorless Drive Scheme for a Brushless DC Motor
Author :
Wang, Chao-Min ; Wang, Shyh-Jier ; Lin, Shir-Kuan ; Lin, Hsing-Yu
Author_Institution :
Dept. of Electr. & Control Eng., Nat. Chiao Tung Univ., Hsinchu
fDate :
6/1/2007 12:00:00 AM
Abstract :
This paper presents a novel twelve-step sensorless drive scheme for a three-phase brushless DC motor, which combines the traditional six-step 120deg and 180deg conduction modes and has varied active angular period. The proposed scheme is implemented on a single FPGA-chip. Several experiments for various active angle periods from 124deg to 168.75deg are undertaken. The experimental results show that the torque constant is larger for the larger active angular period
Keywords :
DC motor drives; brushless DC motors; field programmable gate arrays; FPGA chips; active angular period; three-phase brushless DC motors; twelve-step sensorless drive scheme; Brushless DC motors; Chaos; Commutation; Control engineering; Delay; Industrial control; Phase detection; Synchronous motors; Torque; Voltage; Back EMF; brushless DC motor; sensorless drive; zero-crossing;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2007.892327
