Title :
Analysis of Commutation Torque Ripple in Three-Phase, Four-Switch Brushless DC (BLDC) Motor Drives
Author :
Niasar, Abolfazl Halvaei ; Vahedi, Abolfazl ; Moghbelli, H.
Author_Institution :
Dept. of Electr. Eng., Iran Univ. of Sci. & Technol., Tehran
Abstract :
Torque ripple generated in the commutation interval is one of the main drawbacks of BLDC motor. This paper presents an original comprehensive study on the generated torque ripples due to phase commutation in the four-switch, three-phase inverter (FSTPI) brushless DC motor drives which are suitable for low cost applications. Torque ripple and commutation duration values are obtained for different operation conditions and problem in high speed region of FSTPI-BLDC is shown. The results indicate that because of asymmetrical voltages of phases in a FSTPI brushless DC motor, commutations in six operation modes are different. Also, it is shown that the ripple is independent of current and varies with speed
Keywords :
DC motor drives; brushless DC motors; invertors; BLDC motor; commutation interval; commutation torque ripple; four-switch brushless DC motor drives; phase commutation; three-phase brushless DC motor drives; three-phase inverter; Brushless DC motors; Commutation; Costs; DC generators; DC motors; Inverters; Motor drives; Topology; Torque control; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 2006. PESC '06. 37th IEEE
Conference_Location :
Jeju
Print_ISBN :
0-7803-9716-9
DOI :
10.1109/PESC.2006.1711805
