Oscillations in voltage controlled induction motor drives

Author

Iyengar, R. S Janardhana ; Sastry, V.V.

Author_Institution

Dept. of Electr. Eng., Inst. of Technol., Madras, India

fYear

1995

fDate

21-24 Feb 1995

Firstpage

123

Abstract

Oscillations in the range of 5 to 10 Hz are noticed in some underdamped voltage controlled induction motor drives fed from a constant frequency constant voltage source. These oscillations produce noise and may damage the system. The results from simulation have shown that the oscillations are due to the asymmetry in triggering, resulting in a large rate of change of motor current. These oscillations are more pronounced with a 6-pulse 120° width triggering scheme than according to a 12-pulse concept. The experimental data are verified with the simulation results giving quantitative data for effective understanding of this phenomena. Two control strategies are suggested for damping of oscillations in such digital drive systems

Keywords

digital control; induction motor drives; machine control; microcomputer applications; oscillations; power engineering computing; voltage control; 5 to 10 Hz; 6-pulse 120° width triggering; constant frequency constant voltage source; digital drive systems; microprocessor control; motor current change; noise; oscillations; simulation; triggering asymmetry; underdamped motor drives; voltage controlled induction motor drives; Damping; Equations; Frequency; Induction motor drives; Induction motors; Lighting control; Microprocessors; Space vector pulse width modulation; Stators; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems, 1995., Proceedings of 1995 International Conference on

Print_ISBN

0-7803-2423-4

Type

conf

DOI

10.1109/PEDS.1995.404936

Filename

404936