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Journal of Modern Power Systems and Clean Energy 2022年第5期10卷 1385-1400页

作者： Ruohuan Yang Jianxun Jin Qian Zhou Shuai Mu ahmed abu-siada IEEE School of Electrical and Information Engineering Tianjin UniversityTianjin 300072China Department of Electrical and Computer Engineering Curtin UniversityPerthWA 6102Australia

The development of DC custom power protection devices is still in infancy that confines the sensitive loads integrated into medium-voltage(MV) and low-voltage(LV) DC networks. Considering the DC doubly-fed induction generator(DCDFIG) based wind energy conversion system(WECS), this paper proposes a dual active bridge(DAB) based DC unified power quality conditioner(DC-UPQC) with the integration of superconducting magnetic energy storage(SMES) to maintain the terminal voltage of DC-DFIG and regulate the current flow. The principle of the proposed DC-UPQC has three parts, i.e., parallel-side DAB(PDAB), series-side DAB(SDAB), and SMES,used for the voltage compensation, current and power regulation, and energy storage, respectively. The circuit principle of the PDAB and SDAB and the modeling of SMES are analyzed in this paper. A DC dual control strategy is also proposed to deal with the DC voltage oscillation generated by the AC-side asymmetrical fault. A case study of DC-DFIG interfaced with DC power grid is carried out, integrated with the proposed SMES-based DC-UPQC to verify the high-power applications of the proposed structure. Finally, an experiment is implemented, and the results demonstrate the correctness of the theoretical analysis and the feasibility of the proposed structure.

关键词： DC network unified power quality conditioner(UPAC) DC doubly-fed induction generator(DC-DFIG) power quality

Recent Progress and Future Trends on the State of Charge Estimation Methods to Improve Battery-storage Efficiency: A Review

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CSEE Journal of Power and Energy Systems 2022年第1期8卷 105-114页

作者： Md Ohirul Qays Yonis Buswig Md Liton Hossain ahmed abu-siada Department of Electrical and Electrical Engineering Faculty of EngineeringUniversiti Malaysia SarawakKota SamarahanSarawakMalaysia Department of Electrical and Computer Engineering Curtin UniversityKent StreetBentleyPerth 6102WAAustralia

Battery storage systems are subject to frequent charging/discharging cycles,which reduce the operational life of the battery and reduce system reliability in the long *** such,several Battery Management Systems(BMS)have been developed to maintain system reliability and extend the battery’s operative *** estimation of the battery’s State of Charge(SOC)is a key challenge in the BMS due to its non-linear *** paper presents a comprehensive review on the most recent classifications and mathematical models for SOC *** trends for SOC estimation methods are also presented.

关键词： Battery Management System(BMS) battery modeling battery storage efficiency state of charge(SOC)

Industrial IoT Based Condition Monitoring for Wind Energy Conversion System

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CSEE Journal of Power and Energy Systems 2021年第3期7卷 654-664页

作者： Md Liton Hossain ahmed abu-siada S.M.Muyeen Md Mubashwar Hasan Momtazur Rahman Department of Electrical and Computer Engineering Curtin UniversityPerthAustralia School of Science Engineering and ITFederation UniversityAustralia Edith Cowan University Australia

Wind energy has been identified as the second dominating source in the world renewable energy generation after *** and distribution of wind energy has brought technology revolution by developing the advanced wind energy conversion system(WECS)including multilevel inverters(MLIs).The conventional rectifier produces ripples in their output waveforms while the MLI suffers from voltage balancing issues across the DC-link *** paper proposes a simplified proportional integral(PI)-based space vector pulse width modulation(SVPWM)to minimize the output waveform ripples,resolve the voltage balancing issue and produce better-quality output *** experiences various types of faults particularly in the DC-link capacitor and switching devices of the power *** faults,if not detected and rectified at an early stage,may lead to catastrophic failures to the WECS and continuity of the power *** paper proposes a new algorithm embedded in the proposed PI-based SVPWM controller to identify the fault location in the power converter in real *** most wind power plants are located in remote areas or offshore,WECS condition monitoring needs to be developed over the internet of things(IoT)to ensure system *** this paper,an industrial IoT algorithm with an associated hardware prototype is proposed to monitor the condition of WECS in the real-time environment.

关键词： Asset management condition monitoring fault diagnosis industrial internet of things(IoT) wind energy conversion system

Active Cell Balancing Control Strategy for Parallelly Connected LiFePO_(4) Batteries

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CSEE Journal of Power and Energy Systems 2021年第1期7卷 86-92页

作者： Md Ohirul Qays Yonis Buswig Md Liton Hossain Md Momtazur Rahman ahmed abu-siada Department of Electrical and Electrical Engineering Faculty of EngineeringUniversity Malaysia SarawakKota SamarahanSarawakMalaysia Department of Electrical and Computer Engineering Curtin UniversityKent StreetBentleyPerth 6102WAAustralia Electron Science Research Institute Edith Cowan University270 Joondalup DriveJoondalupWA6027Australia

While several recent studies have focused on elimi-nating the imbalance of energy stored in series-connected battery cells,very little attention has been given to balancing the energy stored in parallel-connected battery *** such,this paper aims at presenting a new balancing approach for parallel LiFePO_(4) battery *** this regard,a Backpropagation Neural Network(BPNN)based technique is employed to develop a Battery Management System(BMS)that can assess the charging status of all cells and control its operations through a DC/DC Buck-Boost *** results demonstrate the effectiveness of the proposed approach in balancing the energy stored in parallel-connected battery cells in which the state of charge(SoC)estimation error is found to be only 1.15%.

关键词： Active cell balancing battery management system DC/DC buck-boost converter state of charge estimation

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超导磁储能式模块化线间动态电压恢复器

电力系统及其自动化学报 2024年第12期36卷 19-26页

作者：冯国爽金建勋周倩张鑫傲 GUO Youguang ahmed abu-siada 天津大学电气自动化与信息工程学院天津300072 国核电力规划设计研究院有限公司北京100095 悉尼科技大学电气与数据工程学院悉尼NSW 2007 科廷大学电气工程学院珀斯WA 6845

针对在瞬态电压扰动下多个敏感负载的同时保护,设计一种基于超导磁储能的模块化电流型多馈线间动态电压恢复器的电力装置。基于超导线圈的特性,采用电流源型变流器将补偿信号由直流转换为交流。为提高储能利用率,将多条馈线上的动态电... 详细信息

针对在瞬态电压扰动下多个敏感负载的同时保护,设计一种基于超导磁储能的模块化电流型多馈线间动态电压恢复器的电力装置。基于超导线圈的特性,采用电流源型变流器将补偿信号由直流转换为交流。为提高储能利用率,将多条馈线上的动态电压恢复器与同一个超导磁储能系统连接。根据三相电磁量的对称分解理论,设计变流器的电压双重PI控制策略,建立两条馈线的仿真模型。结果表明,在系统发生电压暂降和暂升故障时,该装置可以快速有效地对电压进行补偿,从而实现对多馈线上负载的保护。

关键词：馈线间动态电压恢复器超导磁储能电流型变流器电压补偿电压双重PI控制

A Novel Design of Octal-Valued Logic Full Adder Using Light Color State Model

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Computers, Materials & Continua 2021年第6期67卷 3487-3503页

作者： ahmed Talal Osama abu-Elnasr Samir Elmougy Department of Computer Science Faculty of Computes and InformationMansoura UniversityMansoura35516Egypt

Due to the demand of high computational speed for processing big data that requires complex data manipulations in a timely manner,the need for extending classical logic to construct new multi-valued optical models becomes a challenging and promising research *** paper establishes a novel octal-valued logic design model with new optical gates construction based on the hypothesis of Light Color State Model to provide an efficient solution to the limitations of computational processing inherent in the electronics *** provide new mathematical definitions for both of the binary OR function and the PLUS operation in multi valued logic that is used as the basis of novel construction for the optical full adder *** case studies were used to assure the validity of the proposed *** cases proved that the proposed optical 8-valued logic models provide significantly more information to be packed within a single bit and therefore the abilities of data representation and processing is increased.

关键词： Mathematical modeling numerical simulations optical logic optics in computing multi-valued logic full adder

SAPEM: Secure Attestation of Program Execution and Program Memory for IoT Applications

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Computers, Materials & Continua 2021年第4期67卷 23-49页

作者： Nasa ahmed Manar abu Talib Qassim Nasir Research Institute of Science and Engineering University of SharjahSharjahUAE Department of Computer Science University of SharjahSharjahUAE Department of Electrical Engineering University of SharjahSharjahUAE

Security is one of the major challenges that devices connected to the Internet of Things(IoT)face *** attestation is used to measure these devices’trustworthiness on the network by measuring the device platform’s *** software-based attestation mechanisms have been proposed,but none of them can detect runtime *** some researchers have attempted to tackle these attacks,the proposed techniques require additional secured hardware parts to be integrated with the attested devices to achieve their *** solutions are expensive and not suitable in many *** paper proposes a dual attestation process,SAPEM,with two phases:static and *** static attestation phase examines the program memory of the attested *** dynamic program ow attestation examines the execution correctness of the application *** can detect code injection and runtime attacks that hijack the control-ow,including data attacks that affect the program *** main aim is to minimize attestation overhead while maintaining our ability to detect the specied *** validated SAPEM by implementing it on Raspberry Pi using its TrustZone *** attested it against the specied attacks and compared its performance with the related work in the *** results show that SAPEM signicantly minimizes performance overhead while reliably detecting runtime attacks at the binary level.

关键词： IoT remote attestation runtime attacks trust TrustZone security

An Enhanced Automatic Arabic Essay Scoring System Based on Machine Learning Algorithms

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Computers, Materials & Continua 2023年第10期77卷 1227-1249页

作者： Nourmeen Lotfy Abdulaziz Shehab Mohammed Elhoseny ahmed abu-Elfetouh Department of Information Systems Faculty of Computers and Information ScienceMansoura UniversityMansoura35516Egypt Department of Information Systems College of Computer and Information SciencesJouf UniversitySakakaSaudi Arabia College of Computing and Informatics University of SharjahSharjahUnited Arab Emirates

Despite the extensive effort to improve intelligent educational tools for smart learning environments,automatic Arabic essay scoring remains a big research *** nature of the writing style of the Arabic language makes the problem even more *** study designs,implements,and evaluates an automatic Arabic essay scoring *** proposed system starts with pre-processing the student answer and model answer dataset using data cleaning and natural language processing ***,it comprises two main components:the grading engine and the adaptive fusion *** grading engine employs string-based and corpus-based similarity algorithms *** that,the adaptive fusion engine aims to prepare students’scores to be delivered to different feature selection algorithms,such as Recursive Feature Elimination and ***,some machine learning algorithms such as Decision Tree,Random Forest,Adaboost,Lasso,Bagging,and K-Nearest Neighbor are employed to improve the suggested system’s *** experimental results in the grading engine showed that Extracting DIStributionally similar words using the CO-occurrences similarity measure achieved the best correlation ***,in the adaptive fusion engine,the Random Forest algorithm outperforms all other machine learning algorithms using the(80%–20%)splitting method on the original *** achieves 91.30%,94.20%,0.023,0.106,and 0.153 in terms of Pearson’s Correlation Coefficient,Willmot’s Index of Agreement,Mean Square Error,Mean Absolute Error,and Root Mean Square Error metrics,respectively.

关键词： Arabic corpus-based similarity correlation machine learning string-based similarity text similarity

Experimental Investigation on Saline Water Purification Using Reverse Osmosis by a Novus Biomimetic Membrane

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Journal of Bionic Engineering 2022年第3期19卷 816-836页

作者： Yasin Edmam Iman Nadim ahmed Sayed abul Monsur Anachh Kazi abu Manjur Department of Civil Engineering Mymensingh Engineering CollegeUniversity of DhakaMymensingh2208Bangladesh Department of Civil Engineering Dhaka University of Engineering&TechnologyGazipur1707Bangladesh

A substantial amount of Earth’s water is inadequate for human consumption while local demand is outstripping traditional supplies in many world regions;thereby,brackish and seawater treatment has become a *** investigation suggested a complete design of an RO-based desalination filter with a multilayer biomimetic *** study demonstrated a comprehensive method for experimentally fabricating a proprietary biomaterial-based multilayer nano-porous *** analysis revealed that Silk Nano-Fibril(SNF)and Hydroxyapatite(HAP)extracted from Bombyx Mori silkworm cocoons may be utilized to manufacture highly methodical multilayer membranes by incorporating protein-self-assembly and ***’s aquaporin layer containing lipid-bilayers has rapid water permeability and high efficacy at eliminating salt ions and *** 4µm thick SNF/HAP membrane showed a considerable decrease in salinity,with a salt rejection of 93.33%.The proposed membrane had a saline water permeability of 6.58 LMH/bar,almost 61.09%higher than conventional TFC *** barrier and spiral-wrapped filter architecture of the membrane enable low fouling and self-cleaning *** schematic filter design and biomimetic fabrication of the SNF/HAP membrane have formulated a conceptual framework that might direct to the broad-scale,low-cost RO water purification filters,increasing the efficiency of water desalination and boosting the effectiveness of water treatment technologies to reduce potable water scarcity.

关键词： Desalination applications Reverse osmosis membrane architecture Biomimetic synthesis Nano-filtration Water purification

Hepatic inflammatory pseudotumor presenting in an 8-year-old boy: A case report and review of literature

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World Journal of Gastroenterology 2015年第28期21卷 8730-8738页

作者： Hussa Al-Hussaini Haya Azouz ahmed abu-Zaid Department of Pathology and Laboratory Medicine King Faisal Specialist Hospital and Research Centre College of Medicine Alfaisal University

Hepatic inflammatory pseudotumors are uncommon benign *** diagnosing hepatic inflammatory pseudotumor can be very challenging because the clinical presentation and radiological appearances are nonspecific and cannot be certainly distinguished from malignant neoplastic ***,we present a case of hepatic IPT in an 8-yearold boy who presented to clinic with a 3-mo history of a tender hepatic mass,fever of unknown origin,and9-kg weight *** physical examination was notable for tender *** investigations were notable for a normal hepatic profile and elevated erythrocyte sedimentation rate and C-reactive protein.A T2-attenuated magnetic resonance imaging scan of the abdomen showed a 4.7 cm x 4.7 cm x 6.6cm,contrast-enhancing,hyper-intense,well-defined lesion involving the right hepatic *** view of the unremitting symptoms,tender hepatomegaly,thrombosed right hepatic vein,nonspecific radiological findings,and high suspicion of a deep-seated underlying infection or malignancy,a right hepatic lobectomy was ***,the hepatic lesion exhibited a mixture of inflammatory cells(histiocytes,plasma cells,mature lymphocytes,and occasional multinucleated giant cells) in a background of dense fibrous ***,the cells stained negative for SMA,ALK-1,CD-21 and CD-23,diffusely positive for CD-68,and focally positive for *** final histopathological diagnosis was consistent with hepatic *** the postoperative 4-mo follow-up,the patient was asymptomatic without radiological evidence of recurrence.

关键词： Inflammatory pseudotumor Inflammatorymyofibroblastic tumor Hepatic Liver