A disturbance observer based approach to current control of PMSM drives for torque ripple reduction. Issue 4 (2019)

• Record Type: Journal Article
• Authors: Kim, Yong-Hun; Choi, Kyunghwan; Kim, Seok-Kyoon; Kim, Kyung-Soo
• Is Part Of: IFAC-PapersOnLine. Volume 52:Issue 4(2019)
• Page Start: 206
• Page End: 209
• Publication Date: 2019
• Subjects: motor drive -- control -- torque ripple reduction -- disturbance observer; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2019.08.179
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: This paper deals with the reduction of torque ripple in a PMSM (permanent magnet synchronous motor) drive using disturbance observer based control. The current ripple is periodically synchronized to the position of the rotor in the form of distorted back-EMF voltage. Therefore, the current ripple is concentrated on the rotation frequency and integral multiples in the frequency domain. In this paper, a method is introduced to reduce the current ripple while maintaining reference tracking performance without a significant change of the controller by intensively increasing the disturbance suppression performance of the frequency band corresponding to the current ripple. The proposed method is verified that a steady-state 58% ripple reduction in 500W SPMSM in the experiments.