Dead time compensation using MRAS observer for a permanent magnet synchronous motor

Author

Jong-Hyun Kim ; Kwan-Yuhl Cho ; Hag-Wone Kim ; Byung-Kuk Lim ; Jae-Ho Choi

Author_Institution

Korea Nat. Univ. of Transp., Chungju, South Korea

fYear

2014

fDate

21-24 Sept. 2014

Firstpage

246

Lastpage

251

Abstract

A dead time of the PWM inverter for variable speed motor drives generates the distortion in the phase currents. The current distortion is one of the sources of torque ripples in a PM synchronous motor. In this paper, the effect of the dead time to the torque ripple of a PM synchronous motor is investigated. To reduce the current distortion caused by the dead time, the dead time compensation by the estimated output voltage distortion using the MRAS observer is investigated. Also, the effectiveness of the dead time compensation methods by abc reference frame and dq reference frame are compared.

Keywords

PWM invertors; model reference adaptive control systems; permanent magnet motors; synchronous motors; variable speed drives; MRAS observer; PWM inverter; abc reference frame; dead time compensation; dq reference frame; estimated output voltage distortion; permanent magnet synchronous motor; phase current distortion; torque ripples; variable speed motor drives; Acoustic distortion; Harmonic analysis; Inverters; Nonlinear distortion; Observers; Power harmonic filters; Torque; Dead time; MRAS observer; PMSM;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference and Exposition (PEMC), 2014 16th International

Conference_Location

Antalya

Type

conf

DOI

10.1109/EPEPEMC.2014.6980720

Filename

6980720