Ibrahima Ndiaye
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View article: Efficacité agronomique de Faidherbia albida (Del) A. Chev. sur la croissance et le rendement du Sorgho (Sorghum bicolor [L.] Moench) en plein champ en Basse Casamance (Senegal)
Efficacité agronomique de Faidherbia albida (Del) A. Chev. sur la croissance et le rendement du Sorgho (Sorghum bicolor [L.] Moench) en plein champ en Basse Casamance (Senegal) Open
Le sorgho est une plante essentielle en Afrique, où il constitue l'un des aliments de base pour des milliers de personnes. Cependant, la dégradation des sols due entre autres à l'utilisation excessive d'engrais chimique, le rend peu produc…
View article: Sustainable Grid through Distributed Data Centers: Spinning AI Demand for Grid Stabilization and Optimization
Sustainable Grid through Distributed Data Centers: Spinning AI Demand for Grid Stabilization and Optimization Open
We propose a disruptive paradigm to actively place and schedule TWhrs of parallel AI jobs strategically on the grid, at distributed, grid-aware high performance compute data centers (HPC) capable of using their massive power and energy loa…
View article: Grid-Ready Flexible Transformers
Grid-Ready Flexible Transformers Open
Overview of the world's first deployed flexible power transformer presented to the IEEE Transformer Committee
View article: FLEXIBLE POWER TRANSFORMERS TO IMPROVE RESILIENCY OF TRANSMISSION NETWORKS
FLEXIBLE POWER TRANSFORMERS TO IMPROVE RESILIENCY OF TRANSMISSION NETWORKS Open
For decades, transformer flexibility of operation has been limited to adjustable voltage ratio and, in some cases, several ratings with staged cooling. Transformers reconnectable to multiple voltage ratings have been primarily applied as e…
View article: Advanced Flexible Transformers
Advanced Flexible Transformers Open
Advanced grid solutions are comprised of advanced transmission technologies and grid enhancing technologies. In this webinar, experts will provide participants with insights into eight advanced grid solutions. The advanced transmission tec…
View article: Flexible Transformers for Resilient and Adaptable Power Systems
Flexible Transformers for Resilient and Adaptable Power Systems Open
This paper presents experience with grid ready flexible transformer unit, which is in service for two years without any difficulty. Transformer unit is capable of changing short circuit impedance on load and it is equipped with state-of-th…
View article: Decomposition characteristics of C4F7N-based SF6-alternative gas mixtures
Decomposition characteristics of C4F7N-based SF6-alternative gas mixtures Open
C4F7N [2,3,3,3-tetrafluoro-2-(trifluoromethyl)propanenitrile]/CO2 gas mixtures are being developed as an eco-friendly electrical insulator to replace SF6, the most potent greenhouse industrial gaseous dielectric. However, recent studies ha…
View article: Flexible transformer system
Flexible transformer system Open
A system includes conductive windings extending around a magnetic core and impedance-varying windings extending around the magnetic core. The impedance-varying windings include positive windings and negative windings. The conductive windin…
View article: Grid-Ready Flexible Transformers for Resilient Transmission Networks
Grid-Ready Flexible Transformers for Resilient Transmission Networks Open
Today’s transmission networks extend for hundreds of kilometers, transferring significant amounts of electrical energy. For every country, there are sort of “back- bone” lines, where a massive failure of transformers would create serious c…
View article: Design, Deployment, and Characterization of the World’s First Flexible Large Power Transformer
Design, Deployment, and Characterization of the World’s First Flexible Large Power Transformer Open
As we know, power transformers are the most critical asset of the transmission network. Although highly reliable, they still can fail prematurely or ultimately retire at the end of their service life. In today’s design practices, transform…
View article: BIFACIAL (N+/P/P+) SILICON SOLAR CELL BASE THICKNESS OPTIMIZATION, WHILE ILLUMINATED BY THE REAR FACE WITH MONOCHROMATIC LIGHT OF SHORTWAVELENGTHS
BIFACIAL (N+/P/P+) SILICON SOLAR CELL BASE THICKNESS OPTIMIZATION, WHILE ILLUMINATED BY THE REAR FACE WITH MONOCHROMATIC LIGHT OF SHORTWAVELENGTHS Open
The monochromatic absorption coefficient of silicon, inducing the depth of penetration of light into the base of the solar cell, is used through back surface recombination velocity expressions, to determine the optimum thickness necessary …
View article: Sensitivity analysis of the technical and economic feasibility of converter-interfaced CHP System
Sensitivity analysis of the technical and economic feasibility of converter-interfaced CHP System Open
The adoption of small-to-medium sized (1MW~20MW) combined heat and power (CHP) system is lagging, especially in industrial and commercial applications. Our prior research has proved that interfacing CHP with grid-ready converters can incre…
View article: Adoption de variétés améliorées de mil dans le Bassin arachidier du Sénégal: Déterminants et impact sur le rendement et le bien-être
Adoption de variétés améliorées de mil dans le Bassin arachidier du Sénégal: Déterminants et impact sur le rendement et le bien-être Open
Cet article examine les déterminants de l’adoption des variétés améliorées de mil dans le Bassin arachidier du Sénégal et son impact sur le rendement et le bien-être. Pour identifier les déterminants nous avons fait recours au modèle logit…
View article: Integration Study of Converter-Interfaced Combined Heat and Power Plants
Integration Study of Converter-Interfaced Combined Heat and Power Plants Open
Combined Heat and Power (CHP) systems, as a proven technology, provide numerous benefits to the plant owner by saving electricity bill, reducing carbon dioxide emissions, and improving electricity service reliability. However, their integr…
View article: Harmonics and Stability Evaluation of Converter-Interfaced Combined Heat and Power Units
Harmonics and Stability Evaluation of Converter-Interfaced Combined Heat and Power Units Open
Grid integration of medium-sized combined heat and power (CHP) units is challenging due to strict grid codes and conventional generators lack of control flexibility to meet these grid codes. Adding a two-stage ac-dc-ac power electronics in…
View article: Feasibility Analysis of Converter-Interfaced Combined Heat and Power System
Feasibility Analysis of Converter-Interfaced Combined Heat and Power System Open
As a promising new design concept, the converter-interfaced combined heat and power (CHP) system is coupled to the bulk grid through a rectifier and a grid-ready tied inverter. Compared to the traditional directly-coupled CHP system, it re…
View article: Amélioration de la productivité du sorgho de décrue par une meilleure installation des cultures dans le cercle de Yélimané
Amélioration de la productivité du sorgho de décrue par une meilleure installation des cultures dans le cercle de Yélimané Open
Résumé: L’agriculture de décrue est sensible au changement et à la variabilité climatiques puisque dépendant des précipitations dans la zone de Yélimané. En effet, une faible pluviosité entraîne une réduction du temps d’inondation des surf…
View article: Grid Ready, Flexible Large Power Transformer
Grid Ready, Flexible Large Power Transformer Open
GE Research and its partner Prolec GE have proposed a novel and breakthrough concept to improve the flexibility and interchangeability of large power transformers (LPTs). LPTs refer in this report to transformers with a power rating equal …
View article: Le sens du discours politique face aux stéréotypes et préjugés lors des conflits
Le sens du discours politique face aux stéréotypes et préjugés lors des conflits Open
The objective of this article is to demonstrate that the premonitory speeches of great 20th century authors like Ferdinand Céline are still current. The world is upset by conflicts of all kinds. No continent is spared as if man has definit…