Engineering Sciences

Yazarlar: Ömer ali Karaman, Mehmet İlyas BAYINDIR, Hüseyin Altun

Konular:-

DOI:10.12739/nwsaes.v6i1.5000067029

Anahtar Kelimeler:Direct torque control,Vector control,Hysteresis controller,D-q model,Induction motor

Özet: In this study, an induction motor drive system that uses direct torque control (DTC) method was analyzed. Therefore, DTC-controlled induction motor drive system was simulated in Matlab/Simullink by using mathematical d-q model of the induction motor. Speed, produced torque, stator and rotor currents variations against time of the DTC-controlled induction motor were investigated under both transient and steady-state conditions. In the examination of the drive system speed, torque and current results were obtained by considering the motor was under loaded or unloaded conditions at certain time intervals. It was seen that hysteresis bandwith of the flux and torque controllers affect the inverter switching frequency and therefore causes torque fluctuations in the drive system. In this study, because hysteresis bandwith of the controllers affect the inverter switching frequency, and therefore causes flux and torque fluctuations, first, suitable bandwith for the controllers should be chosen and then the DTC control is recommended.

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