Title :
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
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;
Conference_Titel :
Power Electronics and Drive Systems, 1995., Proceedings of 1995 International Conference on
Print_ISBN :
0-7803-2423-4
DOI :
10.1109/PEDS.1995.404936
