Synchronous servomotor fed by a PWM inverter-analysis and compensation of the low frequency torque ripple

Author

Liebaut, J.-F. ; Pioufle, B. Le

Author_Institution

UA CNRS, Lab. d´´Electricite Signaux et Robotique, Cachan, France

Volume

1

fYear

1994

fDate

5-9 Sep 1994

Firstpage

543

Abstract

In the classical control of electrical drives fed by a pulse-width modulation (PWM) power converter, the inverter is considered as a simple transmission gain corresponding to the average modelling approach. This modelling is reasonable in many cases but shows its limits as the PWM period increases and becomes significant compared to the electrical and mechanical time constants of the machine. In this case, with classical controllers (PI, for example), a low frequency torque ripple appears

Keywords

PWM invertors; compensation; control system analysis; machine control; machine theory; permanent magnet motors; power system harmonics; servomotors; synchronous motor drives; torque; 2 kW; PM synchronous servomotor drives; PWM inverters; average modelling; compensation; electrical time constants; low frequency torque ripple; mechanical time constants; power converter; transmission gain; Frequency; Nonlinear equations; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Rotors; Servomotors; Stators; Torque control; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, Control and Instrumentation, 1994. IECON '94., 20th International Conference on

Conference_Location

Bologna

Print_ISBN

0-7803-1328-3

Type

conf

DOI

10.1109/IECON.1994.397835

Filename

397835