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Your search keyword '"Ali, Jawad"' showing total 40 results
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40 results on '"Ali, Jawad"'

1. Robust Coordination of Electricity and Gas Networks Integrated With Energy Hubs, Rooftop Solar Homes, and Responsive Loads

Author

Ali Jawad Kadhim Al-Hassanawy, Kazem Zare, Saeid Ghassemzadeh, and Morteza Nzari-Heris

Subjects
Active load, environmental pollution, energy hub, fuzzy approach, integrated electricity and gas networks, robust optimization, Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Abstract

This paper presents a robust framework for optimally coordinating integrated electricity and gas networks incorporating energy hubs and active loads. The energy hubs contain different sources, converters, and storage units to supply a variety of consumers. The designed system internally exchanges energy and gas using interface equipment and it simultaneously can participate in the day-ahead markets. This study also investigates the influence of various components such as renewable resources and energy storage systems on reactive power management. According to the high penetration of renewable energies and their significant impact on the network operation, a robust method consisting of information gap decision theory and fuzzy approach is applied to handle the uncertainty of wind and solar units. In addition, the role of flexible loads and prosumers is investigated by a time-based strategy, and eventually, a sensitivity analysis is implemented to evaluate the behavior of critical parameters. The presented model is a non-linear type that is linearized utilizing appropriate procedures to guarantee the problem convergence. The results show that the robust optimization with the maximum confidence level increases pollution and cost functions by 14.73% and 49.68%, respectively. In return, active loads decrease the mentioned values by 7.67% and 16.04%, respectively which validates their notable effects. The reactive power control of renewable resources and storage systems reduces the reactive power transferring through tie-lines and consequently improves technical specifications.

Published
2024
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13. Review on MPPT Techniques in Solar System

Author

Alrubaie, Ali Jawad, primary, Al-Khaykan, Ameer, additional, Malik, R. Q., additional, Talib, Suhair Hussein, additional, Mousa, Mohammed Imran, additional, and Kadhim, Ashraq Mohammed, additional

Published
2022
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31. A New Subexpression Elimination Algorithm Using Zero-Dominant Set

Author

Michael H. B. Hayes, Firas Ali Jawad Al-Hasani, and Andrew Bainbridge-Smith

Subjects
Set (abstract data type), Filter design, Finite impulse response, Heuristic (computer science), Computer science, Dot product, Algorithm design, Hamming weight, Algorithm, Expression (mathematics)
Abstract

A new common sub expression elimination (CSE) algorithm is proposed for realizing finite impulse response (FIR) filters or other dot product operations. In the proposed algorithm, filter coefficients are represented using redundant number representations from the zero-dominant set (ZDS). The ZDS is generated to add importance on the zero symbol positions in a representation while minimizing the Hamming weight. The ZDS contains all minimum Hamming weight redundant representations plus some other representations taken from the large set of all of the redundant representations for a given word length. A heuristic horizontal sub expression elimination algorithm is proposed to resolve the overlapped patterns in the representations of the coefficients. The algorithm achieved a better sub expression elimination compared to Hartley's CSD method and to other proposed algorithms that do not resolve overlapping patterns.

Published
2011

33. A new miniaturized fractal bandpass filter based on dual-mode microstrip square ring resonator

Author

Ali, Jawad K.

Subjects
Resonator, Fractal, Band-pass filter, Filter (video), law, Diagonal, Electronic engineering, Optical ring resonators, Topology, Square (algebra), Microstrip, law.invention, Mathematics
Abstract

A novel fractal dual-mode microstrip bandpass filter design has been introduced in an attempt to produce filters with highly miniaturized size for modern wireless applications. The filter structure has been generated based on the 3 rd iteration Minkowski-like pre-fractal geometry, using the conventional dual-mode square ring resonator as the initiator in the fractal generation process. The space-filling property, self-similarity and the diagonal symmetry of the structures corresponding to the successive iteration levels of this fractal geometry have found to produce reduced size filter structures with accepted performance. The bandpass filter structure produced by the 3 rd iteration of this fractal geometry can be considered as a novel design with adequate performance. This design structure possesses a size reduction of about 72% compared with the conventional dual-mode square ring resonator operating at the same frequency and using the same substrate material. In addition, the new design technique seems reliable, since it provides the filter designers with more degree of freedom and further size reduction as compared with those reported in the literature.

Published
2008

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