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2024 IEEE International Conference on electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles and International Transportation Electrification Conference, ESARS-ITEC 2024

作者： Labigalini, Márcio Roberto Barreto, Gilmar UNICAMP - University of Campinas Feec - Faculty of Electrical and Computer Engineering SP Campinas Brazil

ISBN: (纸本)9798350373905

The goal of this research is to show that there are agile solutions to reduce the effects of climate change, which has generated serious problems in worldwide. Solutions in developed and emerging countries are different;however, both have their share of contributions to mitigating problems related to the increase in the planet's temperature. What was committed to in the Paris Agreement has become an immediate need that must be addressed by all countries in the world. Such solutions involve abandoning fossil fuels and using renewable and sustainable energy sources. Electric vehicles tend to be the best solution in developed countries;however, in emerging countries, there will be a delay for the fleet to be replaced, mainly for economic reasons, even if there is a national political commitment. An economically viable possibility: There is an urgent need for action to achieve the overarching goal of NET Zero by 2050, with the aim of avoiding climate tragedies that are already damaging and could make it harder for life to continue on the planet. That can be adopted quickly is the use of biofuels in the transport sector. Among existing biofuels, ethanol and renewable diesel stand out as the best solutions for emerging countries, which should contribute considerably to mitigating global problems since then. The methodology adopted in this work is based on research into recent publications and news, organized into graphs to facilitate analysis and comparisons. In the short term, biodiesel should be replaced by renewable diesel around the world. Ethanol tends to be a global solution in the short and medium term, as besides being an agile solution for the transport sector, it can also be used to produce SAF and Hydrogen, which tends to take the lead in the supply of renewable energy in the future. © 2024 IEEE.

关键词： Biofuels

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Integrated design of Battery Energy Storage System with PV for university campus energy sustainability

Integrated design of Battery Energy Storage System with PV f...

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2024 IEEE URUCON, URUCON 2024

作者： Bonatto, Alexa Bonelli Bonatto, Benedito Donizeti Torrezan, Gabriel Fraga Castellano, Ubiratan Fernando Da Silva, Luiz Carlos Pereira De Souza, Antonio Carlos Zambroni Isee - Institute of Electrical Systems and Energy Unifei - Federal University of Itajubá MG Itajubá Brazil Unicamp - Universidade Estadual de Campinas Feec - Faculty of Electrical and Computer Engineering SP Campinas Brazil

ISBN: (纸本)9798350355383

This document presents a real case study evaluating the optimal design for installation of a battery energy storage system (BESS) together with a photovoltaic system (PV). The selected case study was the UNIFEI campus in Itajubá-MG, Brazil, supplied by the Brazilian distribution utility CEMIG. The tariff structure in Brazil is essentially classified in two groups: group A for customers supplied in medium, high voltages, and underground systems and group B, supplied in low voltage systems. UNIFEI is supplied at 13.8 kV medium voltage level, thus classified as group A4, and with the time of use (TOU) tariff 'Green Tariff', i.e. with different energy prices for peak and off-peak periods and a single price value for power demand. Therefore, based on the campus energy bills, it was developed and applied an approach using the software HOMER® - Hybrid Optimization of Multiple Energy Resources to calculate the demand power and energy size for the battery energy storage system(s) using ferrous lithium batteries mainly focusing in saving electricity generated by the PV systems during the day to supply electrical energy during peak hours at night, thus avoiding high electricity prices from the utility. Then, it was evaluated the possible technical and economic impacts. This paper contributes to the global issue on sustainable development, taking universities as living labs in energy transition. © 2024 IEEE.

关键词： Battery storage

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Ethanol and Renewable Diesel as Agile Solutions in Emerging Countries to Achieve NET Zero ASAP

Ethanol and Renewable Diesel as Agile Solutions in Emerging ...

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International Conference on electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC)

作者： Márcio Roberto Labigalini Gilmar Barreto FEEC - Faculty of Electrical and Computer Engineering UNICAMP - University of Campinas Campinas-SP Brazil

ISBN: (数字)9798350373905

ISBN: (纸本)9798350373912

The goal of this research is to show that there are agile solutions to reduce the effects of climate change, which has generated serious problems in worldwide. Solutions in developed and emerging countries are different; however, both have their share of contributions to mitigating problems related to the increase in the planet's temperature. What was committed to in the Paris Agreement has become an immediate need that must be addressed by all countries in the world. Such solutions involve abandoning fossil fuels and using renewable and sustainable energy sources. Electric vehicles tend to be the best solution in developed countries; however, in emerging countries, there will be a delay for the fleet to be replaced, mainly for economic reasons, even if there is a national political commitment. An economically viable possibility: There is an urgent need for action to achieve the overarching goal of NET Zero by 2050, with the aim of avoiding climate tragedies that are already damaging and could make it harder for life to continue on the planet. That can be adopted quickly is the use of biofuels in the transport sector. Among existing biofuels, ethanol and renewable diesel stand out as the best solutions for emerging countries, which should contribute considerably to mitigating global problems since then. The methodology adopted in this work is based on research into recent publications and news, organized into graphs to facilitate analysis and comparisons. In the short term, biodiesel should be replaced by renewable diesel around the world. Ethanol tends to be a global solution in the short and medium term, as besides being an agile solution for the transport sector, it can also be used to produce SAF and Hydrogen, which tends to take the lead in the supply of renewable energy in the future.

关键词： Ethanol Renewable energy sources Climate change Net zero Diesel engines Hydrogen Energy management Biofuels Renewable energy sources

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Optimal Stochastic Planning of a Green Hydrogen Production System via LP and Scenarios Reduction

Optimal Stochastic Planning of a Green Hydrogen Production S...

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IEEE General Meeting Power& Energy Society

作者： Lucas Zenichi Terada Juan Carlos Cortez Luiza Higino S. Santos Jéssica Alice A. Silva Francisca Dulcinéia C. Gomes Juan Camilo López Marcos J. Rider School of Electrical and Computer Engineering (FEEC) Universidade Estadual de Campinas (UNICAMP) Brazil Faculty of Electrical Engineering Mathematics and Computer Science (EECMS) University of Twente The Netherlands

ISBN: (数字)9798350381832

ISBN: (纸本)9798350381849

An electrolyzer produces green hydrogen (H 2 ) using water and electricity from the main grid and local renewable energy sources (RESs). Hence, this study presents a stochastic linear programming (LP) model to efficiently sizing of distributed energy resources (DERs) for green producing and selling H 2 . The proposed methodology involves a two-stage scenario reduction process, which manages computational complexities in handling numerous scenarios. The objective function aims to minimize the total average capital expenditure (CAPEX) and operating expenses (OPEX) for the project lifetime. A comprehensive test case incorporating wind, photovoltaic (PV), and battery energy storage system (BESS) is utilized to evaluate the efficacy of the model. The outcomes revealed that, for realistic investment costs and production prices, the BESS is not installed due to its high CAPEX and OPEX.

关键词： Photovoltaic systems Wind Production systems Costs Battery energy storage system Computational modeling Stochastic processes Linear programming Green hydrogen Distributed power generation

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Comparative Dynamic Performance of Switched Reluctance Motor in Flow Control of Centrifugal Pump

Comparative Dynamic Performance of Switched Reluctance Motor...

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IEEE/IAS International Conference on Industry Applications (INDUSCON)

作者： Bruna Aderbal De Oliveira Marcelo Vinícius De Paula Paulo Robson Melo Costa Vinicius Augusto De Abreu Batista Marcelo Gradella Villalva Tarcio Andre Dos Santos Barros Faculty of Mechanical Engineering (FEM) University of Campinas (UNICAMP) Campinas Brazil School of Electrical and Computer Engineering (FEEC) University of Campinas (UNICAMP) Campinas Brazil Faculty of Mechanical Engineering (FEM) University of Campinas (UNICAMP)

Centrifugal pumps are utilized in various applications that require flow control during operation. In pumping systems, flow control can be achieved by controlling the speed of the motor coupled to the centrifugal pump or by throttling a valve. In this paper, a comparison of the dynamic performance of a 12/8 switched reluctance motor for the two methods of flow control is presented. To ensure the performance of the switched reluctance motor in the flow control of the pumping system, the optimization of the turn-on angle and the DC-link voltage was performed. These results were compared and the switched reluctance motor under speed control was more energy efficient than the valve control. At a flow rate of 20.57 m 3 /h, using the flow control method through valve regulation, the electrical power in the motor was 176.28% of the electrical power from the method using speed control.

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On the Limits of Multimode SDM Transmission Capacity

On the Limits of Multimode SDM Transmission Capacity

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LEOS Summer Topical Meetings

作者： Filipe M. Ferreira Fabio A. Barbosa Rekha Yadav Zun Htay Samuel Lennard Jakub Kostial Mareli Rodrigueri Optical Networks Group University College London London UK Faculty of Electrical and Computer Engineering University of Campinas (UNICAMP) Brazil

We review our recent work on the optimization of multimode fibers to support over 1000 spatial modes, focusing on minimizing differential mode delay and maximizing throughput. We identify a practical mode scaling limi... 详细信息

ISBN: (数字)9798350393873

ISBN: (纸本)9798350393880

关键词： Optical fiber losses Multiplexing Rayleigh scattering Reviews Throughput Manufacturing Coatings

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Grid Edge Renewable Technologies Enabling Sustainable Cities Through Big Data Analytics with a General Approach for Mapping Public Opportunities in Photovoltaic Generation

SSRN

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SSRN 2023年

作者： Bonatto, Benedito D. Barbosa, Tiago M. Costa, Vinicius B.F. Freitas, Walmir Silva, Luiz C.P. Arioli, Fernanda C.T. Ricciardi, Tiago R. de Almeida, Madson C. Castro, Marcelo S. Guillardi, Hildo UNIFEI Federal University of Itajuba FEEC UNICAMP Faculty of Electrical and Computer Engineering The State University of Campinas Brazil FEEC UNICAMP Faculty of Electrical and Computer Engineering The State University of Campinas Brazil UNIFEI Federal University of Itajuba FEUP Faculty of Engineering The University of Porto Brazil EMC UFG School of Electrical Mechanical and Computer Engineering The Federal University of Goias Brazil ICTS UNESP Science and Technology Institute The Paulista State University FEEC UNICAMP Brazil

The Brazilian public sector exclusively purchases electricity from distribution companies at fixed rates, generally does not buy electricity in the free electricity market, and power generation through photovoltaic (PV) systems with energy storage systems for energy optimization and demand response is yet incipient. However, such an electricity sector business model has become challenged by the development of renewable generation sources, advanced energy storage systems, and competitive retail electricity markets, being the concept of community-based markets with peer-to-peer transactions an evolving trend. In this context of Grid Edge Technologies, where Decarbonization, Digitalization, and Decentralization are promoting the energy transition, big data analytics applied to the BDGD can also be useful to propose more advanced business models for the public sector, focusing on enhancing electricity affordability, efficiency, efficacy, and sustainability. Therefore, this paper contributes to this by (i) creating a methodology that enables researchers to access the BDGD, process the data, and (ii) conducting a thorough evaluation of investment opportunities in PV generation to make the Brazilian public sector more sustainable (financially, socially and environmentally). The results show the economic viability of PV systems to provide electricity to the public sector, public services, and lighting in all cities and states of Brazil. © 2023, The Authors. All rights reserved.

关键词： Data Analytics

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Enhanced Distributed Self-Healing System for electrical Distribution Networks Using ADMM

Enhanced Distributed Self-Healing System for Electrical Dist...

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IEEE General Meeting Power& Energy Society

作者： Juan Camilo López E. T. Marco Gerards Johann L. Hurink Marcos J. Rider Department of Systems and Energy School of Electrical and Computer Engineering University of Campinas (UNICAMP) Campinas SP Brazil Faculty of Electrical Engineering Mathematics and Computer Science University of Twente (UT) Enschede Overijssel the Netherlands

Unlike centralized versions, a distributed self-healing system (SHS) for electrical distributed systems is less vulnerable to single-point failures (or attacks), requires less information from the agents, and is more scalable. However, optimality is challenging to achieve because binary variables are used in the modelling of the distributed service restoration problem. To deal with this challenge, this paper proposes an enhanced alternating direction method of multipliers (ADMM)based algorithm used to developed a fully distributed SHS in electrical distribution networks. Hereby, three ADMM-based heuristics are executed in parallel to improve the chances of obtaining a feasible solution. However, if none of the heuristics converge within given reasonable time, the proposed distributed SHS uses a basic restoration plan that is feasible in terms of topology and operational constraints. Results using the IEEE 123node system show that the proposed distributed SHS is reliable and it always provides a feasible solution.

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Integrated design of Battery Energy Storage System with PV for university campus energy sustainability

Integrated design of Battery Energy Storage System with PV f...

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IEEE URUCON

作者： Alexa Bonelli Bonatto Benedito Donizeti Bonatto Gabriel Fraga Torrezan Ubiratan Fernando Castellano Luiz Carlos Pereira Da Silva Antonio Carlos Zambroni De Souza ISEE - Institute of Electrical Systems and Energy UNIFEI - Federal University of Itajubá Itajubá MG Brazil FEEC - Faculty of Electrical and Computer Engineering UNICAMP - Universidade Estadual de Campinas Campinas SP Brazil

ISBN: (数字)9798350355383

ISBN: (纸本)9798350355390

This document presents a real case study evaluating the optimal design for installation of a battery energy storage system (BESS) together with a photovoltaic system (PV). The selected case study was the UNIFEI campus in Itajubá-MG, Brazil, supplied by the Brazilian distribution utility CEMIG. The tariff structure in Brazil is essentially classified in two groups: group A for customers supplied in medium, high voltages, and underground systems and group B, supplied in low voltage systems. UNIFEI is supplied at 13.8 kV medium voltage level, thus classified as group A4, and with the time of use (TOU) tariff “Green Tariff”, i.e. with different energy prices for peak and off-peak periods and a single price value for power demand. Therefore, based on the campus energy bills, it was developed and applied an approach using the software HOMER® - Hybrid Optimization of Multiple Energy Resources to calculate the demand power and energy size for the battery energy storage system(s) using ferrous lithium batteries mainly focusing in saving electricity generated by the PV systems during the day to supply electrical energy during peak hours at night, thus avoiding high electricity prices from the utility. Then, it was evaluated the possible technical and economic impacts. This paper contributes to the global issue on sustainable development, taking universities as living labs in energy transition.

关键词： Photovoltaic systems Battery energy storage system Sensitivity analysis Electricity Tariffs Power distribution Integrated design Software Sustainable development Optimization

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Single nanofabrication step of low series resistance nanowire-based devices for giant piezoresistance characterization

Single nanofabrication step of low series resistance nanowir...

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Microelectronics Technology and Devices (SBMicro)

作者： Kung Shao Chi Lucas Barroso Spejo Renato. A. Minamisawa Marcos V. Puydinger Dos Santos Faculty of Electrical and Computer Engineering Universidade Estadual de Campinas (UNICAMP) Campinas Brazil Institut für Mathematik und Naturwissenschaften Fachhochschule Nordwestschweiz Windisch Switzerland

ISBN: (数字)9798331540630

ISBN: (纸本)9798331540647

In this work, we aim to fabricate strained silicon nanowires (sSiNWs) to study their electric mobility and giant piezoresistance. Through techniques compatible with the CMOS technology, individual nanowires (NWs) were fabricated from strained silicon-on-insulator (sSOI) thin films with 0.8% biaxial strain. Subsequently, the buried oxide (BOX) was removed from the SOI film, thus suspending the NWs, and the new boundary condition of its surface induces mechanical stress amplification, now uniaxial in the NW longitudinal direction. The proposal is to stress the NWs to levels higher than those employed in industry and, hence, fabricate prototypes using a single-step fabrication protocol, yet with an optimized contact resistance. Parameter optimization can further result in the fabrication of MOSFETs based on a single ultra-strained NW in gate-all-around (GAA) topology, as well as chemical and physical sensors for various technological applications.

关键词： Fabrication MOSFET Nanofabrication Surface resistance Silicon Nanowires Topology

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