Performance and torque-ripple characterization in induction motor adjustable-speed drives using time-stepping coupled finite-element state-space techniques

1999 ◽  
Vol 35 (5) ◽  
pp. 982-990 ◽  
Author(s):  
J.F. Bangura ◽  
N.A.O. Demerdash
2009 ◽  
Vol 6 (3) ◽  
pp. 495-505 ◽  
Author(s):  
Milutin Petronijevic ◽  
Nebojsa Mitrovic ◽  
Vojkan Kostic ◽  
Bojan Bankovic

This paper researches unsymmetrical voltage sag influence on torque ripple in scalar controlled (V/Hz), rotor field oriented (RFO) and direct torque controlled (DTC) drives. Electric drives performance degradation during voltage sag mainly depends on the used control algorithm. Industrial drives with all three types control methods are experimentally tested. Experiments with digital observer's application confirm the proposed solution. .


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