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This paper presents design and implementation of a sensorless speed control with DTFC (direct torque and flux control) strategy for induction motor. The DTFC in its conventional form uses algorithms to select the components of the voltage inverter. This paper proposes to replace the conventional selector switches statements of the voltage inverter by a selector based on neural networks ANN (artificial...
The presented study is focused on a doubly fed induction machine (DFIM) applied in motor working. Its stator and rotor windings are connected to voltage sources inverters (VSI). This speed drive can be used for high power applications. Power supply of this motor is divided into two parts by the means of a power dispatching ratio. Moreover, this system provides some interesting degrees of freedom....
Direct torque control (DTC) can directly control the inverter states in order to reduce the torque error within the prefixed band limit DTC of brushless dc drive with trapezoidal back-EMF is presented in this paper. Using the rotor flux vector position in alpha - beta axis stationary reference frame and torque error, the proper switching pattern can be selected to control the generated torque and...
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