Modeling effects of system frequency variations in induction motor dynamics using singular perturbations

2000 ◽  
Vol 15 (2) ◽  
pp. 764-770 ◽  
Author(s):  
X. Xu ◽  
R.M. Mathur ◽  
J. Jiang ◽  
G.J. Rogers ◽  
P. Kundur
Keyword(s):  
Induction Motor ◽  
Singular Perturbations ◽  
System Frequency ◽  
Frequency Variations ◽  
Motor Dynamics

scholarly journals The complex controller for three-phase induction motor direct torque control

2009 ◽  
Vol 20 (2) ◽  
pp. 256-262 ◽  
Author(s):  
Alfeu J. Sguarezi Filho ◽  
E. Ruppert Filho
Keyword(s):  
Induction Motor ◽  
Closed Loop ◽  
Direct Torque Control ◽  
Torque Control ◽  
Closed Loop System ◽  
Low Speed ◽  
Tuning Method ◽  
Three Phase ◽  
Model Complex ◽  
System Frequency

This paper proposes a design and tuning method for a complex gain controller, based on the three-phase induction motor mathematical model complex transfer function to be used in the direct torque control at low speed which is a problem so far. The design and tuning of the complex gain is done by using the closed loop system frequency-response function. Experimental results are presented to validate the controller and operation at low speed is also explored.

Analysis of power quality in a grid system connected with a three phase induction motor

2020 ◽  
Vol 21 (4) ◽  
Author(s):  
Bandla Pavan Babu ◽  
Indragandhi Vairavasundaram
Keyword(s):  
Induction Motor ◽  
Power Quality ◽  
Voltage Sag ◽  
Test Procedures ◽  
Three Phase ◽  
Power Frequency ◽  
Frequency Variations ◽  
System Power ◽  
Simulator Test

AbstractIn an electrical system, power quality (PQ) is becoming significant to all types of consumers. With the increase of power demand from end users, maintaining the quality of power within the limitations is a major problem. This paper describes power quality issues like voltage sag, voltage variations, voltage fluctuations, individual harmonics, inter-harmonics and power frequency variations in a grid connected system with a three-phase induction motor connected as a load. This system is tested in according to International Electro technical Commission (IEC) Std. 61000-4-11/4-13/4-14/4-28 which are allowed to the load through a regenerative grid simulator. Test procedures of the system equipment and the detailed analysis of the monitored and measured results are also described in this paper.

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