Browsing by Author "Al-Emadi, Nasser"
Now showing items 1-13 of 13
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A new tracking technique for mechanical angle measurement
Al-Emadi, Nasser; Ben-Brahim, Lazhar; Benammar, Mohieddine ( Elsevier , 2014 , Article)Resolvers and other types of sine/cosine encoders are used for measurement of mechanical angles. These devices produce quadrature signals in the form of sine and cosine of the unknown angle, and require converters to extract ... -
A novel DSTATCOM with 5-level CHB architecture and selective harmonic mitigation algorithm
Al-Emadi, Nasser Ahmed; Buccella, Concettina; Cecati, Carlo; Khalid, Hassan Abdullah ( Elsevier Ltd , 2016 , Article)This paper proposes a five level cascaded converter for Distribution Static Compensator (DSTATCOM) implementing a novel modulation algorithm with harmonic mitigation and a PI controller with phase shift modulation for ... -
A Novel Modified Switched Inductor Boost Converter with Reduced Switch Voltage Stress
Sadaf, Shima; Al-Emadi, Nasser; Iqbal, Atif; Meraj, Mohammad; Bhaskar, Mahajan Sagar ( Qatar University Press , 2020 , Poster)DC-DC power converters are necessary to step-up the voltage or current with high conversion ratio for many applications e.g. photovoltaic and fuel cell energy conversion, uninterruptible power supply, DC microgrid, automobile, ... -
Common mode voltage reduction in a three-to-five phase matrix converter fed induction motor drive
Rahman, K.; Iqbal, Atif; Al-Emadi, Nasser; Ben-Brahim, Lazhar ( Institution of Engineering and Technology , 2017 , Article)Multiphase power converters generate common mode voltage due to switching actions of the power switches. The resulting common mode current in multiphase motor drives flow through the bearing and shaft. Continuous flow of ... -
Control and modulation of three to asymmetrical six-phase matrix converters based on space vectors
Al-Hitmi, Mohammed A.; Rahman, Khaliqur; Iqbal, Atif; Al-Emadi, Nasser ( Korean Institute of Power Electronics , 2019 , Article)This paper proposes the modulation and control of a three-to-six-phase matrix converter with an asymmetrical six-phase output. The matrix converter (MC) outputs consist of two sets of three-phase spatially shifted by 300, ... -
Design, construction and testing of iot based automated indoor vertical hydroponics farming test-bed in qatar
Chowdhury, Muhammad E.H.; Khandakar, Amith; Ahmed, Saba; Al-Khuzaei, Fatima; Hamdalla, Jalaa; Haque, Fahmida; Reaz, Mamun Bin Ibne; Shafei, Ahmed Al; Al-Emadi, Nasser... more authors ... less authors ( MDPI , 2020 , Article)Growing plants in the gulf region can be challenging as it is mostly desert, and the climate is dry. A few species of plants have the capability to grow in such a climate. However, those plants are not suitable as a food ... -
Matlab/Simulink implementation & simulation of islanding detection using passive methods
Ashour, Marwa; Ben-Brahim, Lazhar; Gastli, Adel; Al-Emadi, Nasser; Fayyad, Yara ( IEEE , 2013 , Conference Paper)The extensive use of Distributed Generators in Electrical and power systems made it a must to explore its functionality and the issues related to their connection to the grid. One of the main issues is unintentional ... -
Modelling, analysis, and implementation of a switched-inductor based DC/DC converter with reduced switch current stress
Sadaf, Shima; Al-Emadi, Nasser; Iqbal, Atif; Bhaskar, Mahajan Sagar; Meraj, Mohammad ( John Wiley and Sons Inc , 2021 , Article)This paper proposes a technique for switch current stress reduction in a Switched Inductor DC-DC Boost Converter (SIBC). The proposed technique comes up with a low-cost design, high voltage conversion ratio with a less ... -
Novel PWM Technique for Quasi Switched Boost Converter for the Nano-grid Applications
Meraj, Mohammad; Iqbal, Atif; Al-Emadi, Nasser; Rahman, Syed; Bhaskar, Mahajan Sagar ( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference Paper)Scaled down version of the Micro grid is nanogrid, where each residential home, commercial building etc. are optimized and power is shared between the Battery Energy Storage (BES) and the utility grid. The recently proposed ... -
Real-time smart-digital stethoscope system for heart diseases monitoring
Chowdhury, Muhammad E.H.; Khandakar, Amith; Alzoubi, Khawla; Mansoor, Samar; Tahir, Anas M.; Ibne Reaz, Mamun Bin; Al-Emadi, Nasser... more authors ... less authors ( MDPI AG , 2019 , Article)One of the major causes of death all over the world is heart disease or cardiac dysfunction. These diseases could be identified easily with the variations in the sound produced due to the heart activity. These sophisticated ... -
Reference Layer Artefact Subtraction (RLAS): Electromagnetic Simulations
Chowdhury, Muhammad E. H.; Khandakar, Amith; Mullinger, Karen; Hossain, Belayat; Al-Emadi, Nasser; Antunes,; re; Bowtell, Richard... more authors ... less authors ( Institute of Electrical and Electronics Engineers Inc. , 2019 , Article)The utility of EEG-fMRI is limited by the large artefact voltages produced in EEG recordings made during concurrent fMRI. Novel approaches for reducing the magnitude and variability of the artefacts are, therefore, required. ... -
Simultaneous EEG-fMRI: Evaluating the effect of the EEG cap-cabling configuration on the gradient artifact
Chowdhury, Muhammad E.H.; Khandakar, Amith; Mullinger, Karen J.; Al-Emadi, Nasser; Bowtell, Richard ( Frontiers Media S.A. , 2019 , Article)Electroencephalography (EEG) data recorded during simultaneous EEG-fMRI experiments are contaminated by large gradient artifacts (GA). The amplitude of the GA depends on the area of the wire loops formed by the EEG leads, ... -
Uncertainty awareness in transmission line fault analysis: A deep learning based approach
Fahim, Shahriar Rahman; Muyeen, S M; Mannan, Mohammad Abdul; Sarker, Subrata K.; Das, Sajal K.; Al-Emadi, Nasser... more authors ... less authors ( Elsevier Ltd , 2022 , Article)With the expansion of the modern power system, it is of increasing significance to analyze the faults in the transmission lines. As the transmission line is the most exposed element of a power system, it is prone to different ...