Direct torque control of induction motor using imaginary switching times with 0-1-2-7 & 0-1-2 switching sequences: a comparative study
作者： A. Kumar
DOI: 10.1109/IECON.2004.1431799
关键词: Voltage reference 、 Direct torque control 、 Stator 、 Offset (computer science) 、 Clamping 、 Control theory 、 Leading edge 、 Induction motor 、 Engineering 、 Switching time
摘要: This paper presents a new strategy of direct torque control induction motor using imaginary switching times. Determination effective time from reference voltage vector is eliminated and no requirement sector angle identification. Imaginary times are derived flux errors respective phases. These directly responsible for calculating the during which actual power flows to motor. Also stator resistance drop compensated in terms improve performance. In order further simplify strategy, electromagnetic estimated phase quantities. Simulation results proposed method show effectiveness strategy. Switching sequence 0-1-2-7 (conventional first sector) used but reduce frequency, 0-1-2 (clamping) also presented same program just by changing offset time. A comparison made between two sequences concluded that clamping on leading edge as far losses performance concerned. guarantees very good dynamic steady state with constant frequency.
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