issue 1

20240100-full
Issue 1, 2024

ELECTROTECHNICA & ELECTRONICA E+E

Vol. 59. No 1/2024
Monthly scientific and technical journal
Published by:
The Union of Electronics, Electrical Engineering and Telecommunications /CEEC/, BULGARIA

20240100-full

C O N T E N T S

Georgi Petrov, Velimir Vasilev
Blockchain integration in measurement systems: enhancing industrial data login systems 1

Emil ...  read more

20240100-04
Correlation between degree of polymerization and data from transformer oil analysis
Kjani Guri

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The aging of transformers increases the possibility of failures in the insulation system and structural parts. In this case, the insulation system is the most attacked, because the main component is cellulose. The condition ...  read more

20240100-03
Overview of modern methods for state-of-health and state-of-charge electric vehicles applications
Strahil Е. Sabev, Nikolay D. Madjarov, Dobroslav D. Dankov

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Energy storage systems (ESS) play a crucial role in various applications, including electric vehicles, renewable energy integration, and grid stabilization. Assessing the state-of-health (SOH) and state-of-charge (SOC) of ...  read more

20240100-02
The 6G future: a survey of technological promises and challenges
Emil E. Vladkov

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Unlike previous developments in the field of communication technology, the sixth generation of communication networks makes a request to penetrate all spheres of life, transforming them radically. Unprecedented data rates, ...  read more

20240100-01
Blockchain integration in measurement systems: enhancing industrial data login systems
Georgi Petrov, Velimir Vasilev

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This paper investigates the transformative potential of integrating blockchain technology into measurement systems. By leveraging blockchain’s immutable ledger and smart contracts, the integration aims to enhance trust ...  read more

20230100-full
Issue 1, 2023

ELECTROTECHNICA & ELECTRONICA E+E

Vol. 58. No 1/2023
Monthly scientific and technical journal
Published by:
The Union of Electronics, Electrical Engineering and Telecommunications /CEEC/, BULGARIA

20230100-full

C O N T E N T S

Nedko I. Perchemliev
Design of press for thermal welding of polymers 1

Ventsislava V. Dimitrova, Lilyana S. Koleva
 ...  read more

20230100-01
Design of press for thermal welding of polymers
Nedko I. Perchemliev

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In this article, the methods of welding polymer materials are briefly presented. The whole process of designing a machine – a press for thermal welding of polymer materials (industrial plastics) has been tracked. The separate ...  read more

20230100-02
Development and implementation of a national conference relational database in MS Access
Ventsislava V. Dimitrova, Lilyana S. Koleva

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Holding a national conference involves processing of a large amount of documents and information related to the smooth running of the event. In this paper, the development of a relational database in the MS Access environment ...  read more

20230100-03
Analysis of the impact of two energy conservation measures on reducing CO2 emissions
Ivan Prodanov, Mila Ilieva-Obretenova

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The study uses saved energy (the expected annual economy of electrical energy) to describe the impact of two energy conservation measures (ECM) on reducing CO2 emissions. The first measure M1 is Reconstruction of the electric ...  read more

20230100-04
Manufacturing operations management system for the electron beam welding: process modelling using IEC/EN 62264 standard
Plamen V. Vasilev, Elena G. Koleva

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In the presented work the IEC/EN 62264 standard is implemented for the Manufacturing Operations Management (MOM) system modelling of the electron beam welding process. The basic information system structural elements for enterprise ...  read more