Papers by Itxaso Aranzabal
Energies, Jan 10, 2023
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Energies, Aug 9, 2022
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Data content scrubbing approach for SRAM based FPGA designs
2022 IEEE 31st International Symposium on Industrial Electronics (ISIE), Jun 1, 2022
Electronics, Dec 27, 2022
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Energies
Energy communities (ECs) can become a potential alternative to promote the fight against climate ... more Energy communities (ECs) can become a potential alternative to promote the fight against climate change. Technological progress and price reductions in recent years have made renewable energy-generation systems increasingly affordable and have generated economic benefits by reducing the value of electricity bills for community members, as well as reducing the growing environmental impact. In this context, the authors have taken Tolosa as a case study and conducted a technical and economic analysis of different possible structures of ECs (physical, virtual, with or without storage, participants with different types of consumption, etc.) by comparing them with each other. The generation capacity of the community and the optimal energy-management algorithms have been illustrated, from which the economic benefits for each member are extracted. A dynamic distribution factor is established as the basis of the algorithms, making the benefits fairer. The results obtained from this work, in ...
Energies
Most of current prosumer-energy-management approaches are focused on economic optimization by sel... more Most of current prosumer-energy-management approaches are focused on economic optimization by self-consumption maximization. Nevertheless, a lack of energy management strategies (EMS) that tackle different interaction possibilities among community-clustered solar plus battery prosumers has been detected. Furthermore, such active prosumer EMS may include participation in ancillary service markets such as automatic frequency restoration reserves (aFRR) through an optimized battery-energy storage-system (BESS) operation, as well as incorporating community-level energy management. In this study, an optimal EMS that includes aggregated aFRR-market participation of five solar plus battery prosumers participating in an energy community (EC), with the aim of reducing total costs of ownership for each individual prosumer is proposed. For its validation, different scenarios have been analyzed. The results show that the proposed EMS allows a levelized cost of energy (LCOE) reduction for all co...
Electronics
This paper proposes a methodology to access data and manage the content of distributed memories i... more This paper proposes a methodology to access data and manage the content of distributed memories in FPGA designs through the configuration bitstream. Thanks to the methods proposed, it is possible to read and write the data content of registers without using the in/out ports of registers in a straightforward fashion. Hence, it offers the possibility of performing several operations, such as, to load, copy or compare the information stored in registers without the necessity of physical interconnections. This work includes two flows that simplify the designing process when using the proposed approach: while the first enables the protection or unprotection of writing on different partial regions through the bitstream, the second permits homogeneous instances of a design implemented in different reconfigurable regions to be obtained without losing efficiency. The approach is based and has been physically validated on the ZYNQ from Xilinx, and when using partially reconfigurable designs, ...
Energies
One of the aspects to consider during high-voltage (HV) equipment design is the reduction in the ... more One of the aspects to consider during high-voltage (HV) equipment design is the reduction in the probability of corona effect onset. Indeed, the corona effect is related to high electric field values beyond the equipment’s insulation levels and insulation strength, among other factors. This issue can be addressed during the design step, either by modifying the geometry of the electrical device or by including additional elements in the equipment structure to smooth out the voltage gradient along critical regions, such as anti-corona devices. The study of anti-corona devices for HV insulators is well documented, in contrast to substation connectors. Therefore, the present study proposed the design of a novel anti-corona device for HV substation connectors, including a method for the selection of its dimensions. This study shows that the relationship between the dimensional design variables and the critical electrical field on the connector is described by linear and rational function...
Data content scrubbing approach for SRAM based FPGA designs
2022 IEEE 31st International Symposium on Industrial Electronics (ISIE)
Status and advances in Electric Vehicle's power modules packaging technologies
The technology used in the design of the high power density Electric Vehicle (EV) power inverters... more The technology used in the design of the high power density Electric Vehicle (EV) power inverters packaging (power modules electrical, thermal and thermo-mechanical properties) directly affect the power inverter performance, cost, reliability, efficiency and power density. In this paper the technical trends and advances in EV power module packaging technologies will be reviewed and actual manufactured automotive power modules will be evaluated. Advantages and disadvantages of such modules will be highlighted.
Two-phase liquid cooling for electric vehicle IGBT power module thermal management
2017 11th IEEE International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG), 2017
The main goal of this work is to show the advantages of two-phase cooling technology for thermal ... more The main goal of this work is to show the advantages of two-phase cooling technology for thermal management of high power electronics modules, with a SKIM909GD066 motor inverter as the test device for thermal/fluid analysis. Dissipated power, heat transfer coefficient and fluid temperature are set in a 3-D FEM (Finite Element Method) based thermal model to simulate two-phase cooling of IGBTs at the motor inverter. A comparison of two-phase cooling with single-phase cooling is made to address the advantages of the two-phase solution.
EKAIA Euskal Herriko Unibertsitateko Zientzi eta Teknologi Aldizkaria, 2017
Ibilgailu elektriko, hibrido eta erregai-piladunek duten entzutea geroz eta handiagoa izaten ari ... more Ibilgailu elektriko, hibrido eta erregai-piladunek duten entzutea geroz eta handiagoa izaten ari da. I+G esfortzuak konfigurazio berri, moldagarri, fidagarriagoetan eta kostu txikiagokoetan zentratzen ari dira. Artikulu honetan, topologia hauetako teknologiaren egoera aurkezten da, sistema berri eta etorkizun handikoetan enfasia jarriz.
EKAIA Euskal Herriko Unibertsitateko Zientzi eta Teknologi Aldizkaria, 2017
Ibilgailu elektrikoari loturiko potentzia-bihurgailuetan, korronte-dentsitate handitan (500 A ing... more Ibilgailu elektrikoari loturiko potentzia-bihurgailuetan, korronte-dentsitate handitan (500 A ingurukoak) lan egiten duten IGBT transistoreak eta diodoak erabiltzen dira. Korronte altuak direla eta, handitu egiten dira gailu erdieroale horietan gertatzen diren kommutazio- eta kondukzio-galerak, eta ondorioz, potentzia-erdieroaleak berotu egiten dira. Moduluen efizientzia eta fidagarritasuna ziurtatzeko, beharrezkoa da hozte-sistema eraginkor eta egoki bat aukeratzea. Artikulu honetan, potentzia-bihurgailuen moduluen hozte-metodoak berrikusi eta eztabaidatuko dira.
IEEE Transactions on Power Electronics, May 1, 2019
This paper presents a comparison of conventional single-phase water/glycol liquid and innovative ... more This paper presents a comparison of conventional single-phase water/glycol liquid and innovative two-phase cooling technology for thermal management of high power electronics automotive IGBT modules during full drive cycle. The proposed two-phase cooling system is built using conventional automotive air conditioning components (condenser, expansion valve, compressor, and vapor and liquid lines) and conventional cold plate as used for single-phase cooling, thus the design does not require the development of new technology for its implementation. 3-D numerical simulation in COMSOL and experimental results of twophase cooling have been obtained on a prototype and compared to conventional water/glycol cooling high power electronics modules, with considerable improvement on working temperature, power transfer capacity and equalization of die temperatures during a full driving cycle. These results suggest that two-phase cooling using the same cold plates as in single-phase cooling can be used to substantially improve the performance and reliability, of EV power converters without major changes.
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Papers by Itxaso Aranzabal