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A drive train system (DTS) powered by an ideal voltage source and driving a permanent magnet synchronous motor (PMSM) is discussed in this paper. A two-level, three-phase conventional inverter with no harmonic filters on both AC and DC sides is used as means of power conditioning. This DTS is modelled as a double oscillator according to a drive train in an electric vehicle. Various inverter modulation...
In this paper, the application of adjustable angle ds-qs axis transformation for three-phase current source induction motor drive is proposed. In order to reduce higher switching number caused by ignoring induction motor back-EMF, the ds-qs axis transformation with regulating angle technology is applied to motor drive. Using hysteresis current controller and voltage space vector, the status of switches...
A current-error space-vector-based hysteresis current controller for a general -level voltage-source inverter (VSI)-fed three-phase induction motor (IM) drive is proposed here, with control of the switching frequency variation for the full linear modulation range. The proposed current controller monitors the space-vector-based current error of an -level VSI-fed IM to keep the current error within...
In this paper, a three-level inverter fed induction motor drive operating under Direct Torque Control (DTC) is presented. DTC do not show good performance in low speed region due to stator flux demagnetization that relates to variation in stator resistance. Here, a sinusoidal wave is used as dither signal of minute amplitude (for torque hysteresis band and flux hysteresis band respectively) in the...
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