TY - JOUR AU - Hejazi, Hamdan AU - Bokor, László TI - Modelling and evaluation of cooperative Vulnerable Road User protection schemes in realistic C-ITS environments JF - COMPUTER NETWORKS J2 - COMPUT NETW VL - 246 PY - 2024 PG - 17 SN - 1389-1286 DO - 10.1016/j.comnet.2024.110396 UR - https://m2.mtmt.hu/api/publication/34788060 ID - 34788060 N1 - Export Date: 26 April 2024 CODEN: CNETD Correspondence Address: Hejazi, H.; Department of Networked Systems and Services, Műegyetem rkp. 3., Hungary; email: hhejazi@hit.bme.hu LA - English DB - MTMT ER - TY - CHAP AU - Alshahmani, Ahmad Halal AU - Plesz, Balázs ED - Poppe, András TI - Thermal Behavior of Crystalline Silicon Bottom Cell in a Monolithic Perovskite/Si Tandem Solar Cells T2 - 2023 29th International Workshop on Thermal Investigations of ICs and Systems (THERMINIC) PB - IEEE CY - Budapest SN - 9798350318623 PY - 2023 PG - 6 DO - 10.1109/THERMINIC60375.2023.10325899 UR - https://m2.mtmt.hu/api/publication/34448284 ID - 34448284 N1 - Conference code: 194796 Export Date: 22 December 2023 Funding Agency and Grant Number: Stipendium Hungaricum Scholarship Program of the Hungarian Government [2020 1.1.2-PIACI-KFI-2021-00242]; National Research, Development and Innovation Office (NKFIH) Funding text: This research is supported by the Stipendium Hungaricum Scholarship Program of the Hungarian Government and project number 2020 1.1.2-PIACI-KFI-2021-00242 of the National Research, Development and Innovation Office (NKFIH). AB - Monolithic Perovskite/Si tandem solar cells represent a promising direction in photovoltaic technology. However, understanding the temperature coefficient is essential for predicting performance and improving the temperature adaptability of these devices under varying weather conditions. This paper conducts a detailed analysis of the thermal behavior of c-Si as a bottom cell in a monolithic Perovskite/Si tandem arrangement, exploring how its behavior differs from standalone configurations. This investigation is carried out through a numerical simulation using SCAPS software. The simulation considers the temperature-dependent bandgap and absorption for both c-Si and perovskite, as well as the temperature effects on series and shunt resistances. Four simulation scenarios were analyzed, 1) as a standalone c-Si solar cell, 2) c-Si bottom cell in perovskite/Si tandem structure with spectrum split at the perovskite bandgap, 3) c-Si bottom cell, considering perovskite temperature-dependent bandgap, and 4) c-Si bottom cell, considering perovskite layer thickness, absorption and its temperature-dependent bandgap. The results reveal that c-Si solar cells in tandem structures experience notable differences in temperature coefficients, especially in the short-circuit and MPP current densities, compared to standalone configurations. This difference is mainly attributed to the spectrum splitting and temperature-dependent perovskite absorption. Splitting the spectrum leads to an increase in the temperature coefficient of JSC from 0.0944% °C-1 to 0.2539% °C-1; this temperature coefficient reached 0.983% °C-1 when the top cell layer thickness and perovskite's temperature-dependent bandgap and absorption were incorporated into the analysis. Nevertheless, only a minor variation was observed in the voltage temperature coefficient, for both in standalone c-Si cells and those incorporated as bottom cells in the tandem structure. © 2023 IEEE. LA - English DB - MTMT ER - TY - CHAP AU - ALNAHHAL, AHMED I M AU - Plesz, Balázs ED - Poppe, András TI - Performance Analysis of Stacked Photovoltaic-Thermoelectric Generator Using Mathematical Thermal-Electrical Model T2 - 2023 29th International Workshop on Thermal Investigations of ICs and Systems (THERMINIC) PB - IEEE CY - Budapest SN - 9798350318623 PY - 2023 PG - 5 DO - 10.1109/THERMINIC60375.2023.10325680 UR - https://m2.mtmt.hu/api/publication/34448283 ID - 34448283 N1 - Conference code: 194796 Export Date: 22 December 2023 Correspondence Address: Alnahhal, A.I.; Budapest University of Technology and Economics, Hungary; email: aalnahhal@edu.bme.hu Funding Agency and Grant Number: Stipendium Hungaricum Scholarship Program; National Research, Development, and Innovation Office (NKFIH) [2020-1.1.2-PIACI-KFI-2021-00242] Funding text: The research is supported by the Stipendium Hungaricum Scholarship Program and the project number 2020-1.1.2-PIACI-KFI-2021-00242 of the National Research, Development, and Innovation Office (NKFIH). AB - This paper proposes an electrical-thermal model to evaluate the performance of often proposed PV-TEG stacked systems where the thermoelectric generator device is mounted on the back side of the PV cell. This way, the heat generated by the PV cell is collected by the surface area of the heat collector. The heat sink has been settled at the bottom of the thermoelectric generator device. Investigations were performed at different light concentration levels of 1, 2, 3, 4 and 5 suns. The efficiency of the thermoelectric generator increases with the light concentration due to the increasing in the temperature difference across its terminals. The results showed that the stacked system efficiency is decreasing with the increase of light concentration level and still lower than the efficiency of standalone illuminated PV cell. This is due to the high junction temperature which results in a decrease in the solar cell efficiency where the TEG device is still not able to compensate the decrease in the efficiency of the PV cell. It can be concluded that thermal coupling between the two devices has to be avoided to enable both devices to operate efficiently at their respective optimal operational temperatures. © 2023 IEEE. LA - English DB - MTMT ER - TY - CHAP AU - Barancsuk, Lilla AU - Günter, Dalma AU - Groma, Veronika AU - Hartmann, Bálint ED - Mohos, András ED - Táczi, István ED - Tóth, Zoltán TI - Fotovillamos termelésbecslés támogatása multimodális neurális háló segítségével égboltkameraképek és különböző konfigurációjú időjárási adatok alapján T2 - XIII. Mechwart András Ifjúsági Találkozó: Konferenciakiadvány PB - Magyar Elektrotechnikai Egyesület, Mechwart András Ifjúsági Társaság CY - Siófok SN - 9789639299511 PY - 2023 SP - 7 EP - 19 PG - 13 DO - 10.54232/MAIT.2023_1 UR - https://m2.mtmt.hu/api/publication/34431522 ID - 34431522 LA - Hungarian DB - MTMT ER - TY - JOUR AU - ASIPUELA GONZALEZ, ANGEL GABRIEL AU - Iváncsy, Tamás TI - Numerical Study of Half Wavy and Half W-type Collecting Plates on the Characteristics of Electrostatic Precipitators JF - PERIODICA POLYTECHNICA-ELECTRICAL ENGINEERING AND COMPUTER SCIENCE J2 - PERIOD POLYTECH ELECTR ENG COMP SCI VL - 67 PY - 2023 IS - 3 SP - 337 EP - 344 PG - 8 SN - 2064-5260 DO - 10.3311/PPee.21956 UR - https://m2.mtmt.hu/api/publication/34094276 ID - 34094276 N1 - Export Date: 14 August 2023 Correspondence Address: Asipuela, A.; Department of Electric Power Engineering, Muegyetem rkp. 3., Hungary; email: gabriel.bme_2020@edu.bme.hu LA - English DB - MTMT ER - TY - JOUR AU - Bonyár, Attila AU - Kovács, Rebeka TI - Towards Digital Twins of Plasmonic Sensors: Constructing the Complex Numerical Model of a Plasmonic Sensor Based on Hexagonally Arranged Gold Nanoparticles JF - NANOMATERIALS J2 - NANOMATERIALS-BASEL VL - 13 PY - 2023 IS - 14 PG - 17 SN - 2079-4991 DO - 10.3390/nano13142044 UR - https://m2.mtmt.hu/api/publication/34090313 ID - 34090313 N1 - Funding Agency and Grant Number: Nanoplasmonic Laser Fusion Research Laboratory project (NAPLIFE) - National Research and Innovation Office [2022-2.1.1-NL-2022-00002]; Eoetvoes Lorand Research Network (ELKH), Hungary; National Research, Development, and Innovation Fund of Hungary [TKP2021-EGA-02] Funding text: This work was partially supported by the Nanoplasmonic Laser Fusion Research Laboratory project (NAPLIFE) financed by the National Research and Innovation Office (2022-2.1.1-NL-2022-00002) and by the Eoetvoes Lorand Research Network (ELKH), Hungary. This research conducted at Budapest University of Technology and Economics was funded by the National Research, Development, and Innovation Fund of Hungary under Grant TKP2021-EGA-02 LA - English DB - MTMT ER - TY - CHAP AU - Balogh, Marcell AU - Földvári, András AU - Varga, Pál ED - Akkaya, K ED - Festor, O ED - Fung, C ED - Rahman, M A ED - Granville, L Z ED - dos Santos, C R A TI - Digital Twins in Industry 5.0: Challenges in Modeling and Communication T2 - NOMS 2023-2023 IEEE/IFIP Network Operations and Management Symposium PB - IEEE CY - Piscataway (NJ) SN - 9781665477161 PY - 2023 SP - 1 EP - 6 PG - 6 DO - 10.1109/NOMS56928.2023.10154424 UR - https://m2.mtmt.hu/api/publication/34033399 ID - 34033399 N1 - Budapest University of Technology and Economics, Department of Telecommunications and Media Informatics, Hungary Budapest University of Technology and Economics, Department of Measurement and Information Systems, Hungary Export Date: 27 July 2023 Correspondence Address: Balogh, M.; Budapest University of Technology and Economics, Hungary; email: balogh@tmit.bme.hu Correspondence Address: Varga, P.; Budapest University of Technology and Economics, Hungary; email: pvarga@tmit.bme.hu LA - English DB - MTMT ER - TY - CHAP AU - Kovács, Rebeka AU - Bonyár, Attila ED - IEEE, Staff TI - Finite Element Investigation of the Plasmonic Properties of Hexagonally Arranged Gold Nanoparticles T2 - 2023 46th International Spring Seminar on Electronics Technology (ISSE) PB - IEEE CY - Timisoara SN - 9798350334845 PY - 2023 PG - 4 DO - 10.1109/ISSE57496.2023.10168434 UR - https://m2.mtmt.hu/api/publication/34019861 ID - 34019861 N1 - Export Date: 08 March 2024; Conference name: 46th International Spring Seminar on Electronics Technology, ISSE 2023; Conference date: 10 May 2023 through 14 May 2023; Conference code: 190522 LA - English DB - MTMT ER - TY - CHAP AU - Fehér, Gábor AU - Agócs, Dániel AU - Rózsa, Dániel AU - Balogh, Marcell AU - Reider, Norbert TI - Compensating Delays for Precise and Real-time ROS Cloud Robotics Localization T2 - 2023 IEEE 32nd International Symposium on Industrial Electronics (ISIE) PB - IEEE CY - Piscataway (NJ) SN - 9798350399714 PY - 2023 SP - 1 EP - 4 PG - 4 DO - 10.1109/ISIE51358.2023.10228099 UR - https://m2.mtmt.hu/api/publication/34007356 ID - 34007356 N1 - Budapest University of Technology and Economics, Faculty of Electrical Engineering and Informatics, HSN Lab, Department of Telecommunications and Media Informatics, Budapest, Hungary Ericsson Research, Budapest, Hungary Export Date: 6 October 2023 CODEN: 85PTA Correspondence Address: Fehér, G.; Budapest University of Technology and Economics, Hungary; email: feher.gabor@vik.bme.hu AB - Today high speed 5G networks offer almost negligible delay to reach the cloud infrastructure, however, in the field of cloud robotics, we can still find key components that suffer from latency. While in general, sensor signals benefit from fast transmission, image-based localization accuracy could still be limited due to delayed image processing. The solution presented in this paper uses the available real-time sensory data to improve the accuracy of the image-based localization by providing location predictions in moments when the data from the image is not yet available. We created a solution extending the localization capabilities of the Robot Operating System (ROS). We tested more types of sensory data, including feedback from the control messages, and used artificial intelligence algorithms to make the prediction. LA - English DB - MTMT ER - TY - CHAP AU - Fehér, Gábor AU - Rózsa, Dániel AU - Balogh, Marcell AU - Reider, Norbert TI - Extending Edge-Based Mobile Robot Navigation with Social Awareness T2 - 2023 IEEE 32nd International Symposium on Industrial Electronics (ISIE) PB - IEEE CY - Piscataway (NJ) SN - 9798350399714 PY - 2023 SP - 1 EP - 4 PG - 4 DO - 10.1109/ISIE51358.2023.10227970 UR - https://m2.mtmt.hu/api/publication/34007345 ID - 34007345 N1 - Budapest University of Technology and Economics, Faculty of Electrical Engineering and Informatics, HSN Lab, Department of Telecommunications and Media Informatics, Budapest, Hungary Ericsson Research, Budapest, Hungary Export Date: 6 October 2023 CODEN: 85PTA Correspondence Address: Fehér, G.; Budapest University of Technology and Economics, Hungary; email: feher.gabor@vik.bme.hu AB - In this paper, we introduce a detailed realization of industrial mobile robot navigation abilities among human workers. We extend the navigation layers with state of the art person detection and adapt them to influence trajectory planning. We present our edge-based architecture, how time-critical onboard components offloaded from the robot, and how person detection is integrated into navigation. The system also incorporates social awareness, allowing the robot to take into account the presence and actions of people in its environment and adjust its navigation in line with the requirements of industry~5.0. The realization is evaluated in a series of experiments where results show that it is able to effectively navigate in industrial environment with people present, maintain safe distance and avoid collision with people or other objects. LA - English DB - MTMT ER -