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MPC controller of PV system based Three-Level NPC Inverter under different climatic conditions connected to the grid

Dennai Mohammed Yassine, Tedjini Hamza, Nasri Abdelfatah, Taibi Djamel

Przegląd Elektrotechniczny

2021

R. 97, nr 3

130--137

In this paper, PV arrays are connected to the grid through a three-Level NPC Inverter. Both the current control and voltage balancing performance of the inverter are ensured via model predictive control (MPC) technique. This paper is comparing and presenting operational performance analysis of grid-connected three-Level NPC Inverter results using three techniques controllers namely: Self-tuning Fuzzy Logic PI controller (FLC), Neural Network controller (ANN), and PI classical controller, under different environmental conditions to optimally tune the reference current of the controller and following the maximum power point.

Opisano system ze źródłem fotowoltaicznym gdzie stosuje się zarówno bieżące operacje kontroli, jak i równoważenie napięcia NPC z porównaniem trzech różnych strategii kontrolera. Skuteczność porównuje się między trzema strategiami kontrolnymi przy różnym natężeniu promieniowania i różnej temperaturze.

Least square support vectors machines approach to diagnosis of stator winding short circuit fault in induction motor

Birame M’hamed, Taibi Djamel, Bessedik Sid Ahmed, Benkhoris Mohamed Fouad

Diagnostyka

2020

Vol. 21, No. 4

35--41

Various approaches have been proposed to monitor the state of machines by intelligent techniques such as the neural network, fuzzy logic, neuro-fuzzy, pattern recognition. However, the use of LS-SVM. This article presents an automatic computerized system for the diagnosis and the monitoring of faults between turns of the stator in IM applying the LS-SVM least square support vector machine. in this study for the detection of short circuit faults in the stator winding of the induction motor. Since it requires a mathematical model suitable for modelling defects, a defective IM model is presented. The proposed method uses the stator current as input and at the output decides the state of the motor, indicating the severity of the short-circuit fault.