ANF-RBC CONTROLLER TO REGULATE POWER FLOW OF ELECTRIC PROPULSION IN ELECTRIC VEHICLES

Begam Shaik Ruksana,Loveswara Rao B.,Shobha Rani D. 한국자동차공학회 2023 International journal of automotive technology Vol.24 No.4

In this paper design and simulation of a rule-based controller explained with performance analysis by using an adaptive-neuro-fuzzy and hybrid electric energy storage system to regulate power flow of electric propulsion in EVs named as (ANF-RBC) controller. In this proposed controller a hybrid electric energy storage system (HEESS) generated reference current and proposed controller for decreasing non-linear similarity generated by the usage of HEESS. Performance analysis of proposed controller carried out under three different load conditions and comparative analysis performed with existing one linear and three non-linear controllers. For performance trac under various loaded conditions done with greater than or equal to 90 % of battery current. By observing performance results of proposed controller, reducing non-linearity generated by HEESS and smooth tracking done well than that of traditional linear and non-linear controllers used in EVs. In performance analysis by using obtained results, we can infer proposed controller 17 %, 12 %, 10 % higher than existing RFOSM control, when compared with ASMC controller the proposed controller 25 %, 17 %, 13 % greater, proposed controller performance is 29 %, 21 %, 15 % greater than that of SMC controller and in case of comparing with existing PIDC controller with that of proposed controller performance is 32 %, 26 %, 19 % greater under heavily loaded, mediumly loaded and under lightly loaded condition respectively for all linear and non-linear traditional controllers.

Application of Adaptive Neuro-Fuzzy Inference Rule-based Controller in Hybrid Electric Vehicles

Ruksana Begam Shaik,Ezhil Vignesh Kannappan 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.5

Designing of hybrid architecture has greater importance in the development of electric vehicles to enhance the life cycle of the battery, to protect from nonlinearities and uncertainties of electrical energy storage systems. The objective of this paper is to design and apply the Adaptive Neuro-Fuzzy Inference rule-based controller with the semi-empirical strategy to protect from nonlinearities, uncertainties, and to improve effi ciency in electric vehicles. In this paper, a fully active Li-Ion battery/ Electric Double-Layer supercapacitor hybrid energy storage system used to decouple Li-Ion battery/Electric Double-Layer Supercapacitor from Direct Current bus and to generate Li-Ion battery current reference online semi-empirical rule-based energy management strategy used. The Control system is designed with the Adaptive Neuro-Fuzzy Interface rule-based controller to reduce non-linearity and diff erent uncertainties of the energy storage system with two outputs battery current and DC bus voltage are chosen to measure control system design, which is tested under heavy and light load conditions. Results are validated using MATLAB/Simulink and the performance of the Adaptive Neuro-Fuzzy Interface rule-based controller is 16.96% and 9.81% greater than Robust Fractional Order Sliding Mode Controller under heavy and light load conditions.

Antimicrobial Finishing of Cotton Textiles using Silver Intercalated Clay

Rosina Begam,Mangala Joshi,Roli Purwar 한국섬유공학회 2022 Fibers and polymers Vol.23 No.1

This paper describes the potential use of silver intercalated clay as an antimicrobial finishing agent for cottontextiles meant for health and hygiene applications. Montmorillonite clay (2:1) was intercalated with silver ion through ionexchange reaction. The modified clay was characterized using wide angle X-ray diffractometer (WAXD), Energy dispersiveX-ray spectroscopy (EDX) and inductive coupled plasma spectroscopy (ICP). Results of WAXD revealed that the clay waspartly exfoliated after ion exchange reaction. EDX and ICP analysis confirmed the presence of silver ion in modified clay. The silver intercalated clay was integrated on the cotton fabric using pad dry cure method along with low formaldehydedimethyloldihydroxy ethylene urea (DMDHEU). The antimicrobial and mechanical properties of the finished fabric werestudied. The fabric showed excellent antimicrobial activity up to 10 machine washes. The silver ion releases from the fabricand inhibited the growth of bacteria on the surface of the fabric. The release of silver ion from the finished fabric at differentperspiration and saline water were analyzed. It was found that the silver ion releases faster in alkaline perspiration mediumcompared to acid perspiration medium.

Review on Magnetic Components

Nor Zaihar Yahaya,Mumtaj Begam Kassim Raethar,Mohammad Awan 전력전자학회 2009 JOURNAL OF POWER ELECTRONICS Vol.9 No.2

When converters operate in megahertz range, the passive components and magnetic devices generate high losses. However, the eddy current issues and choices of magnetic cores significantly affect on the design stage. Apart from that, the components’ reduction, miniaturization technique and frequency scaling are required as well as improvement in thermal capability, integration technique, circuit topologies and PCB layout optimization. In transformer design, the winding and core losses give great attention to the design stage. From simulation work, it is found that E-25066 material manufactured by AVX could be the most suitable core for high frequency transformer design. By employing planar geometry topology, the material can generate significant power loss savings of more than 67% compared to other materials studied in this work. Furthermore, young researchers can use this information to develop new approaches based on concepts, issues and methodology in the design of magnetic components for high frequency applications.

Review on Gallium Nitride HEMT Device Technology for High Frequency Converter Applications

Nor Zaihar Yahaya,Mumtaj Begam Kassim Raethar,Mohammad Awan 전력전자학회 2009 JOURNAL OF POWER ELECTRONICS Vol.9 No.1

This paper presents a review of an improved high power-high frequency III-V wide bandgap (WBG) semiconductor device, Gallium Nitride (GaN). The device offers better efficiency and thermal management with higher switching frequency. By having higher blocking voltage, GaN can be used for high voltage applications. In addition, the weight and size of passive components on the printed circuit board can be reduced substantially when operating at high frequency. With proper management of thermal and gate drive design, the GaN power converter is expected to generate higher power density with lower stress compared to its counterparts, Silicon (Si) devices. The main contribution of this work is to provide additional information to young researchers in exploring new approaches based on the device’s capability and characteristics in applications using the GaN power converter design.

Threats of Changing Technology and Increasing Climate Variations: An Empirical Study of Business Opportunities and Challenges by KSA Firms

Divya Rana,Fathimunisa Begam Afsar Hanfy 대한산업공학회 2019 Industrial Engineeering & Management Systems Vol.18 No.3

There has been an increase in demands where businesses are now required to respond to the threat of changing technology and the gradual increase in climatic variations, on the basis of the influential position that businesses are known to enjoy within the global community. If businesses are able to integrate people, technology, strategy and procedures while implementing initiatives that respond to climatic changes, it would result in creation of value in the long-term, which is a powerful too. However, there is a need to understand the threats that are presented by changing technology and climatic variations, which is the key focus of this research. The objective was to identify the business opportunities and challenges faced by businesses in KSA in the face of changing technology and climate change and whether there was an association between the two. The research adopted a quantitative methodology where the findings revealed that climatic variations can substantially impact businesses in terms of financial reporting, organizational reputation, legal responsibilities and supply chain and operations. It also found that business performance was also positively influenced by changing technology. The findings also revealed that changes in technology could also positive influence climatic variations. Thus, it can be concluded that changing technology and climatic variations bright forth substantial risks that could present opportunities as well as significant challenges for businesses operating in KSA.

Review on Magnetic Components: Design & Consideration in VHF Circuit Applications

Yahaya, Nor Zaihar,Raethar, Mumtaj Begam Kassim,Awan, Mohammad The Korean Institute of Power Electronics 2009 JOURNAL OF POWER ELECTRONICS Vol.9 No.2

When converters operate in megahertz range, the passive components and magnetic devices generate high losses. However, the eddy current issues and choices of magnetic cores significantly affect on the design stage. Apart from that, the components' reduction, miniaturization technique and frequency scaling are required as well as improvement in thermal capability, integration technique, circuit topologies and PCB layout optimization. In transformer design, the winding and core losses give great attention to the design stage. From simulation work, it is found that E-25066 material manufactured by AVX could be the most suitable core for high frequency transformer design. By employing planar geometry topology, the material can generate significant power loss savings of more than 67% compared to other materials studied in this work. Furthermore, young researchers can use this information to develop new approaches based on concepts, issues and methodology in the design of magnetic components for high frequency applications.

Review on Gallium Nitride HEMT Device Technology for High Frequency Converter Applications

Yahaya, Nor Zaihar,Raethar, Mumtaj Begam Kassim,Awan, Mohammad The Korean Institute of Power Electronics 2009 JOURNAL OF POWER ELECTRONICS Vol.9 No.1

This paper presents a review of an improved high power-high frequency III-V wide bandgap (WBG) semiconductor device, Gallium Nitride (GaN). The device offers better efficiency and thermal management with higher switching frequency. By having higher blocking voltage, GaN can be used for high voltage applications. In addition, the weight and size of passive components on the printed circuit board can be reduced substantially when operating at high frequency. With proper management of thermal and gate drive design, the GaN power converter is expected to generate higher power density with lower stress compared to its counterparts, Silicon (Si) devices. The main contribution of this work is to provide additional information to young researchers in exploring new approaches based on the device's capability and characteristics in applications using the GaN power converter design.

Renal Replacement Lipomatosis: A Rare and Often Ignored Entity

Rashim Sharma,Sudeep Khera,Mahendra Singh,Shakti Swarup Sarangi,Ismetara Begam 전남대학교 의과학연구소 2022 전남의대학술지 Vol.58 No.2

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