Title :
Advanced sensorless drive technique for multiphase BLDC Motors
Author :
Kim, Tae-Hyung ; Lee, Hyung-Woo ; Ehsani, Mehrdad
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
The main purpose of this paper is to develop a new position sensorless drive method for multiphase brushless DC (BLDC) motors. A BLDC motor with higher number of phases has several advantages. It can reduce the ampere-turns and torque pulsation and increase the efficiency and iron utilization. Also, it is well used for fault tolerant motor drive systems as in military applications. With the developed speed-independent, new position information that is computed in a microprocessor, highly accurate sensorless operation can be realized for multiphase BLDC motors. The operational principle of the proposed sensorless drive for multiphase BLDC motors is theoretically analyzed and the performance is demonstrated by computer simulations and experiments in detail.
Keywords :
DC motor drives; brushless DC motors; electric machine analysis computing; fault tolerance; machine control; microprocessor chips; military systems; position control; torque; BLDC motor; ampere-turns reduction; computer simulation; fault tolerant motor drive system; microprocessor; military application; multiphase brushless DC motor; position information; position sensorless drive method; torque pulsation reduction; Application software; Brushless DC motors; Brushless motors; DC motors; Fault tolerant systems; Iron; Microprocessors; Military computing; Motor drives; Torque;
Conference_Titel :
Industrial Electronics Society, 2004. IECON 2004. 30th Annual Conference of IEEE
Print_ISBN :
0-7803-8730-9
DOI :
10.1109/IECON.2004.1433439
