Communications Internationales

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FPGA-based DTC method for three level inverter-fed induction motor speed
(IEEE, 2017) Douib, Lyamine; Douib, Lyamine; Bencheikh, Fares; Metidji, B.; Kheldoun, Aissa
The paper presents the natural extension DTC principle of three level diode clamped voltage inverter fed induction motor. This technique is based on a simple algorithm using look-up table for a three-level inverter established from a standard two-level inverter. The control algorithm is implemented using Field Programmable Gate Arrays (FPGA) with VHDL coding
Sigmoid function approximation for ANN implementation in FPGA devices
(2010) Khodja, Djalal Eddine; Kheldoun, Aissa; Refoufi, L.
The objective of this work is the implementation of Artificial Neural Network on a FPGA board. This implementation aim is to contribute in the hardware integration solutions in the areas such as monitoring, diagnosis, maintenance and control of power system as well as industrial processes. Since the Simulink library provided by Xilinx, has all the blocks that are necessary for the design of Artificial Neural Networks except a few functions such as sigmoid function. In this work, an approximation of the sigmoid function in polynomial form has been proposed. Then, the sigmoid function approximation has been implemented on FPGA using the Xilinx library. Tests results are satisfactory