Modeling of a Hybrid Electrical Network Under the Constraint of Availability of Energy Sources by a Dynamic Bayesian Network

2024-12-30T14:33:49+00:00

As the world's energy shortages worsen, countries are starting to exploit renewable energies for which solar power becomes the first choice. Considering the insufficiency of hydraulic and thermal resources in Mali, the hybrid system photovoltaic coupled at the grid is necessary and natural. The present study aims to increase the contribution of renewable energy sources to the national electricity production of Mali, and to pave the way for a good supply of electricity, ensuring the sustainable development of the economy and society of Mali. A preliminary analysis defines the technical, economic and environmental conditions for the implementation of 30 MW solar power plants at three points of Mali's energy interconnection network. It can be a first contribution to demonstrating the feasibility of an integrated and self-sufficient energy model in this country. The power of 30 MW is compatible with the capacity of the interconnected network of Mali to absorb the electrical energy produced. For the location of the sites, several criteria have been taken into account for a definitive implementation (local climate conditions, proximity to the interconnected network, source of cooling water, social and environmental impact of the project).

Design of Compact Vivaldi Antenna Arrays for AESA Radar System

2024-12-30T16:07:57+00:00

This paper demonstrates a low-profile, wide band, miniaturized, Stripline fed double layered exponentially tapered slot antenna with a wide-scan capability and 10% bandwidth at the X-band frequency has been designed, fabricated, and tested. The antenna is optimized with a total size equal to 14.2x24.1x1.4 mm³ and is capable of achieving the desired bandwidth experimentally. The 9-element array and feeding network based on 1:9 T-junction power divider was employed to compose the linear array. The array elements are operating with return loss lower than 10 dB at X-band frequency. Measured results of single elements in isolated and array environment are achieved, both have a wide 3-dB beam width better than 107^oin the E- and H- planes, which is capable of a linear array with wide scan angle ±55^o. The linear array has a half power beamwidth of 11 degrees with side-lobe level of -12dB at 10GHz with a gain of 12dBi. These features make the antenna array fit for X-band airborne radar applications.

Transactions on Engineering and Computing Sciences

Modeling of a Hybrid Electrical Network Under the Constraint of Availability of Energy Sources by a Dynamic Bayesian Network

Design of Compact Vivaldi Antenna Arrays for AESA Radar System