DIRECT TORQUE CONTROL METHODS FOR PWM INVERTER-FED INDUCTION MOTOR DRIVES -A SURVEY
 
MARIAN P. KAZMIERKOWSKI
   
Abstract:
This paper presents a review of recently used direct torque and flux control (DTC) techniques for voltage source inverter-fed induction motors. A variety of techniques, different in concept, are described as follows: switching table (ST) based hysteresis DTC, direct self control (DSC), constant switching frequency DTC with space vector modulation (DTC-SVM). Also, nowadays trends in the DTC-SVM techniques based on neuro fuzzy logic controllers are presented. Some oscillograms that illustrate properties of the discussed techniques are included.
   
Key Words: AC motors, direct torque control (DTC), voltage source inverters.
   
 
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