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4th International Conference on Advancement in Electronics and Communication engineering, AECE 2024

作者： Gupta, Manvi Arya, Archie Varshney, Uday Mittal, Jishnu Tomar, Anuradha Netaji Subhas University of Technology Electrical Engineering Department Delhi India Netaji Subhas University of Technology Instrumentation and Control Engineering Department Delhi India

ISBN: (纸本)9798350364729

This study explores data-driven methodologies for State of Health (SOH) and Remaining Useful Life (RUL) prediction of lithium-ion batteries, vital for electric vehicle (EV) adoption. Leveraging NASA and Oxford Battery Degradation datasets, advanced state of the art machine learning techniques like LSTM networks and Transformers and Gated Recurrent Unit (GRU) are integrated to develop and validate a predictive model. Challenges such as non-linear behavior and limited data are addressed with a novel neural network. A comprehensive literature review along with comparative analysis is done to assess the better performing model and it's strengths compared to others. The study advances battery health prediction technologies, enhancing EV battery reliability and efficiency. © 2024 IEEE.

关键词： Lithium-ion batteries

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Machine Learning-Based Prediction of PV Power Considering Dust and Environmental Factors 4

Machine Learning-Based Prediction of PV Power Considering Du...

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4th IEEE International Conference on Applied Electromagnetics, Signal Processing, and Communication, AESPC 2024

作者： Nanda, Saksham Tomar, Anuradha Kumar, Hritik Netaji Subhas University of Technology Department of Electrical Engineering Delhi India Netaji Subhas University of Technology Department of Instrumentation & Control Engineering Delhi India

ISBN: (纸本)9798331528171

Solar energy is one of the most important forms of renewable energy for generating electricity. The efficiency of Photovoltaic (PV) panels that produce electricity depends on the continuously changing weather parameters like dust, wind speed, wind direction, ambient temperature, module temperature, relative humidity and most importantly the solar irradiation. The dust particles in the atmosphere, like the other weather parameters, is also changing continuously and plays a major role in reducing the sunlight on the PV panels by scattering, absorbing or reflecting the incoming sunlight. This leads to reduced efficiency in the production of electricity and consequently the DC power generated from the PV panels will be less. This paper aims to build a model using machine learning algorithms to predict the output DC power due to the dust (PM 2.5 and PM 10 concentrations are considered in the dataset), wind speed, wind direction, the ambient temperature of the region where the PV panels are placed, the module temperature, the relative humidity. Using this dataset, a random forest model (by implementing a machine learning algorithm known as the Random Forest Algorithm) was developed and implemented. This model achieved a mean absolute error (MAE) of 482.02 Watts and an R-squared score of 0.873 and can be used to achieve optimized performance and efficient energy conversion of PV systems. © 2024 IEEE.

关键词： Photovoltaics

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Design rules for doped transition metal dichalcogenides heterostructures

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Physical Review Materials 2024年第10期8卷 106001页

作者： Elliot Perviz Antonio Cammarata Tomas Polcar Department of Control Engineering Faculty of Electrical Engineering

Transition metal dichalcogenides (TMDs) are the base materials for diverse technological devices such as photovoltaics, lithium-ion batteries, hydrogen-evolution catalysis, transistors, photodetectors, DNA detection, memory devices, and nanotribological systems. Their flexible MX2 stoichiometry enables the fine-tuning of their properties via cation or anion substitution, thus allowing heterostructures with diverse functionalities to be engineered at the nanoscale. In this respect, we perform first-principles simulations to individuate possible novel structures derived from monolayer and bilayer MoS2 and WS2 alloyed with various metal and nonmetal dopants at different concentrations. We evaluate the relative stability and characterize the mechanisms responsible for their formation through electronic descriptors. Specifically, we identify bond covalency and orbital polarization as collective indicators for favorable electronic distributions, while the electronic structure of the isolated atom may be used for the selection of suitable dopants. The proposed methodology constitutes a general protocol, which can easily be extended to van der Waals heterostructures beyond those based on TMDs. Finally, the methodology can be used to help machine learning algorithms screen material databases for high-throughput discovery of new van der Waals–based alloys.

关键词： Nanostructures Transition metal dichalcogenides Density functional theory First-principles calculations

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Power Management and Power Quality control in Hybrid Unified-MIMO System Based Microgrid

Power Management and Power Quality Control in Hybrid Unified...

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2024 IEEE Region 10 Symposium, TENSYMP 2024

作者： Verma, Akash Deep Gaur, Prerna Tomar, Anuradha Netaji Subhas University of Technology Instrumentation & Control Engineering Department Delhi India Netaji Subhas University of Technology Electrical Engineering Department Delhi India

ISBN: (纸本)9798350364866

Low voltage next-generation unified multi-input multi-output (U-MIMO) system-based AC-DC microgrids (MGs), equipped with distributed renewable resources (DERs), significantly contribute to sustainable development by offering reliable, decentralized and scalable electricity. It alleviates the burden on the main grid and promotes socio-economic development. However, challenges persist in power management, power quality and the high installation costs of battery management systems (BMS). To address these issues, this study introduces a modified hybrid U-MIMO system to optimize MGs. This system provides an all-weather synchronized solution, integrating multi-located PV nanoarrays and single-phase grid supply as multi-input sources for AC-DC multi-output loads with a bi-directional BMS. Grid interaction reduces the required battery capacity and thus lowers installation costs. The modified U-MIMO system enhances power management by accounting for BMS state of charge (SOC) and power generation from DERs. This study uses a single-phase induction motor and a rectifier with inductive load as non-linear AC loads, while an EV battery serves as the DC load. Multi-control structures within the hybrid U-MIMO system ensure a constant DC bus voltage, adhering to IEEE 519 standards. A comprehensive analysis with two modes and one scenario demonstrates effective power management, synchronization and power quality control, validating the system's capability to support diverse loads and applications efficiently. © 2024 IEEE.

关键词： Induction motors

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Trolleybus overhead line as a linear charger for battery-electric buses

eb - Elektrische Bahnen

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eb - Elektrische Bahnen 2024年第5期122卷 176-184页

作者： Bartlomiejczyk, Mikolaj Gdansk University of Technology Faculty of Electrical and Control Engineering Department of Electrical Transport ul. G. Narutowicza 11/12 Gdansk80-233 Poland

With increasing urbanization and growing pollution, electric buses are becoming a key element in the transformation of public transport. However, before this ecological trend becomes the norm, it is crucial to understand the challenges of its implementation. Electric buses require infrastructure for charging or operating. This has different efficiencies and environmental impacts. Furthermore, dynamic charging via the trolleybus network offers an economical alternative to other charging technologies as well as battery replacement. Electric buses have a perspective in electric public transport. © Georg Siemens Verlag GmbH & Co. KG.

关键词： Electric buses

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Practical Realization of Only Active Floating Lossless Inductance Simulator 10

Practical Realization of Only Active Floating Lossless Induc...

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10th International Conference on engineering, Applied Sciences, and Technology, ICEAST 2024

作者： Roongmuanpha, Natchanai Unhavanich, Sumalee Pukkalanun, Tattaya Tangsrirat, Worapong School Of Engineering Department Of Computer Engineering Bangkok10520 Thailand Faculty Of Digital Technology Bangkok10300 Thailand School Of Engineering Department Of Instrumentation And Control Engineering Bangkok10520 Thailand

ISBN: (纸本)9798350385946

This paper describes an electronically controllable floating lossless inductance simulator circuit implemented with only off-the-shelf available integrated circuits, namely LT1228 and operational amplifier (OA). The proposed design consists solely of two LT1228s and a single OA. By using an active element named LT1228, the equivalent inductance can be tuned electronically with depended on the externally supplied current applied to LT1228. The proposed simulator imposed just one component matching restriction that required the equality of two transconductances. It is easily attainable with a simple current mirror. The worthiness of the proposed floating inductance simulator has been proven and applied to the construction of the 2nd-order RLC highpass/bandpass filter as an application. PSPICE simulations are used to investigate the characteristics of the proposed simulator and its filter realization. © 2024 IEEE.

关键词： Operational amplifiers

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Cascaded Buck Hybrid Interlink Converter for Multiple-Input / Multiple-Output Operation 4

Cascaded Buck Hybrid Interlink Converter for Multiple-Input ...

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4th International Conference on Smart Grid and Renewable Energy, SGRE 2024

作者： Awadelseed, Ahmed Lewicki, Arkadiusz Odeh, Charles Iqbal, Atif Gdansk University of Technology Faculty of Electrical and Control Engineering Gdansk Poland Qatar University Department of Electrical Engineering Doha Qatar

ISBN: (纸本)9798350306262

The provision of isolated- and non-isolated DC output voltages by Power electronics power-conditioning devices in the recent 'green-energy-revolution' era is on course. In this paper, a structure for multi-input multi-output (MIMO) DC-DC buck converter is proposed to generate output voltages of varying levels with fewer component-count. The DC output voltage of each of the constituting buck converters can be used independently or cascaded with one another, depending on the output load voltage requirement. The converter operational modes are analysed and its gain models are derived. Also, expressions for the efficiency and power density of the proposed buck converter are presented. Distinct features of proposed converter are: its simplified configuration, high input/output power density, low-cost involvement, reduction of ripple amplitudes of the source currents, and possibility of deploying energy sources with different voltage-current characteristics. High voltage gain, and bidirectional power flow can be achieved in the converter operations. Experimental results on a laboratory prototype of the proposed MIMO validated the presented DC-DC buck converter topological concept. © 2024 IEEE.

关键词： Buck converter

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Voltage Quality Improvement for Hybrid Energy Storage of DC Microgrid 11

Voltage Quality Improvement for Hybrid Energy Storage of DC ...

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11th International Conference on Power and Energy Systems engineering, CPESE 2024

作者： Mahmoud, Abdulrahman Babiker, Ahmed Mohamed, Mazen Ahmed, Ijaz Khalid, Muhammad Control and Instrumentation Engineering Department Saudi Arabia Department of Electrical Engineering Islamabad Pakistan Electrical Engineering Department Dhahran31261 Saudi Arabia KFUPM Interdisciplinary Research Center for Sustainable Energy Systems Saudi Arabia

ISBN: (纸本)9798350377439

DC microgrids (MGs) have recently garnered significant interest due to their efficient power conversion and simpler control systems compared to AC MGs. However, managing DC MGs presents specific challenges, especially when dealing with pulsed power loads and constant power loads, as both require rapid dynamic responses from the MG, impacting voltage quality. This paper introduces a novel control methods, including a highpass filter with model predictive control (MPC) for current distribution between the battery and supercapacitor (SC) and a neuro-fuzzy system, to address these issues. These methods adjust the SC's state of charge (SoC) following abrupt load changes and maintain its SoC within a predefined range to ensure continuous operation. Using the proposed feedback neuro-fuzzy technique, the MG can improve voltage quality and transient response, achieving results that are nearly identical to those of the MPC. Simulations conducted in MATLAB/Simulink confirm the effectiveness of this approach. © 2024 IEEE.

关键词： High pass filters

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A dual-slope RDC using T-Network for Low Resistance Measurement

A dual-slope RDC using T-Network for Low Resistance Measurem...

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2023 IEEE Applied Sensing Conference, APSCON 2023

作者： Singh, Gopal Sohail, Shiraz Islam, Tarikul National Institute of Technology Department of Instrumentation and Control Engineering Tiruchirappalli India Department of Electrical Engineering New Delhi India

ISBN: (纸本)9781665461634

A novel resistance to digital converter (RDC) is presented for the measurement of low resistance (Rx, less than 1 Ω). The scheme is based on a dual-slope integrator with a T-network in feedback, three SPDT switches, and a comparator. In a typical dual-slope integrator with low Rx connected to inverting terminal, a large current flows because of which the op-amp behaves abnormally. Even decreasing the input voltage to 0.01 V doesn't help, because of which till date no RDC is proposed even for less than 100 Ω measurement. In the proposed scheme, Rx is connected to the middle branch of the T-network, while a fixed resistance and a feedback capacitor are connected to the other two remaining branches. The T-network boosts the input current entering the feedback capacitor thereby increasing the sensitivity which is a novelty. During charging, the lead resistance (RL) connecting Rx is measured, while during discharging, the Rx+RL is measured. Finally, RL is subtracted to accurately measure Rx. Hence the scheme is independent of RL in a two-wire type configuration, which is another novelty. The simulation results showed an average error of 0.0241 % in the range of 0.1 Ω to 0.9 Ω. © 2023 IEEE.

关键词： Operational amplifiers

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Path Planning for Data Collection Multiagent System with Priority and Moving Nodes in a Sensing Field with Obstacles

Periodica polytechnica Electrical engineering and computer s...

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Periodica polytechnica electrical engineering and computer science 2024年第3期68卷 309-318页

作者： Szénási, Sára Harmati, István Department of Control Engineering and Information Technology Faculty of Electrical Engineering and Informatics Budapest University of Technology and Economics Magyar tudósok körútja 2 Budapest1117 Hungary

Nowadays there is a more and more common need for one-off data collection in a specified area. For example, in case of searching for the survivors of disasters or wars, or for skiers who get into trouble. The simplest way of collecting such data is using wireless sensor network (WSN). However, data transmission within the network uses great amount of energy that may significantly reduce the lifetime and operation time of the battery-operated sensors. For this reason, the data transfer between the given sensor nodes is carried out by robots. In order to minimize the latency of data collection, it is possible to use cooperating robots. It frequently occurs that one of the nodes requires more urgent visit than the other ones, for example, the serious injuries require urgent medical attendance. The sensor nodes can also be moved to collect more usable data in a larger field. To solve this, path planning for data collection from priority and moving nodes are also presented here. The algorithm developed here to perform the one-off data collection operates so that the agents start from preliminary determined or random points and then visit all the sensor nodes, download the data from these nodes and after this arrive at a designated point where they upload the collected information. The goal here is the minimization of cost that include not only the walk-through time but also the consequences of the late visit of the higher priority nodes. The optimization is solved using the ant colony optimization. © 2024 Budapest University of Technology and Economics. All rights reserved.

关键词： Motion planning

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