A. Nejmi

University Sultan Moulay Slimane · Génie électrique

This article presents the results of the impact study on the high-voltage (HV) transmission network of a 40 MW PV plant connected to the high impedance Moroccan HV network. The analysis of the power plant’s behavior at the connection point includes the calculation of the active and reactive power flux and the harmonics. The simulation results from...

The main goal of a battery management system (BMS) is to estimate parameters descriptive of the battery pack operating conditions in real-time. One of the most critical aspects of BMS systems is estimating the battery's state of charge (SOC). However, in the case of a lithium-ion battery, it is not easy to provide an accurate estimate of the state...

This article presents the results of the impact study on the HV transmission network of a 40 MW PV plant connected to the high impedance Moroccan HV network. The analysis of the power plant’s behavior at the connection point includes the calculation of the active and reactive power flux and the harmonics. The simulation results from the ETAP softwa...

The exploitation of transmission or distribution network of substations requires auxiliary electrical sources with low continuous and alternative voltage. Actually, DC and AC power supplies of auxiliary services are insured by batteries, generator, rectifiers and inverters. In this work, we want to add another source based on renewable energies to...

The Moroccan electricity network has been designed and sized to work with high power outputs connected to the transmission network. This it delivers a unidirectional power flow from production to consumption. In this configuration, the electricity network carries electricity from production plants mainly connected to the transmission network to cus...

p>This paper presents an approach to identify risks for different failures that could affect wind turbine performance, and reduce the measured annual electrical production (MAEP). The proposed approach is based on FMECA (failure mode, effects and criticality analysis) and wind turbine performance study. We present firstly the methodology of perform...

The Moroccan electricity network has been designed and sized to work with high power outputs connected to the transmission network, delivering a unidirectional power flow from production to consumption. In this configuration, the electricity network carries electricity from production plants mainly connected to the transmission network to customers...

This paper presents a hybrid wind generation with a doubly-fed induction generator (DFIG) and a permanent magnet synchronous machine (PMSM). The study analyzes the performances of the two wind systems and assets the stability of the operating parameters in the presence of a grid fault. Both the DFIG and PMSM Machine-Side Converter (MSC) nonlinear c...

This paper introduces a nonlinear control of a wind turbine based on a Double Feed Induction Generator. The Rotor Side converter is controlled by using field oriented control and Backstepping strategy to enhance the dynamic stability response. The Grid Side converter is controlled by a sliding mode. These methods aim to increase dynamic system stab...

Born from collaboration between the Ecole Polytechnique Fédérale de Lausanne (EPFL), the Institut Agronomique Vétérinaire Hassan II (IAV) in Rabat, and the Targa-Aide Association, the purpose of the Decentralized Rural Electrification Project for remote settlements in the Ouneine Valley (Moroccan High Atlas) is to provide isolated populations with...

Le projet d’Electrification Rurale Décentralisée (ERD), réalisé sous forme de recherche-action, a fait l’objet d’un partenariat scientifique entre une université technologique suisse (Ecole Polytechnique Fédérale de Lausanne) et une ONG marocaine (Targa-Aide) rattachée à un institut marocain d’enseignement supérieur (Institut Vétérinaire Agronomiqu...

Researchers from Switzerland and Morocco undertook a joint project to develop a technique for producing electrical energy from renewable primary energy sources to supply small networks of isolated consumers. Specific attention was paid to sustainable development issues, namely, the integration of social, environmental, technical and economic compon...

This paper presents a feedback linearization control for a wind turbine based on a Permanent Magnet Synchronous Generator (PMSG). Considering the nonlinear relationship between the generator speed and generator currents, the generator side converter is designed by using a feedback linearization to control electromagnetic torque and generator speed....

The Ecole Polytechnique Federale de Lausanne, the Hassan II Institute of Agronomics and Veterinary Science (IAV), and Targa-Aid association undertook a joint project to develop a technique for producing electrical energy from renewable primary energy sources to supply small networks of isolated consumers. Specific attention was paid to sustainable...

The Ecole Polytechnique Federale de Lausanne (EPFL), the Hassan II Institute of Agronomics and Veterinary Science (IAV) and Targa-Aid association (Rabat/Morocco) undertook a joint project to implement an electrification technique from different types of renewable sources, supplying small networks of isolated consumers. To help select the best solut...

This study presents a novel means of designing a simple and effective torque controller for Permanent Magnet Synchronous Motor (PMSM). The overall stability of the system is shown using Lyapunov technique. The Lyapunov functions used contain a term penalizing the integral of the tracking error, enhancing the stability. The tracking error is shown t...