Zobrazeno 1 - 10
of 230
pro vyhledávání: '"Jordi Roger-Riba"'
Publikováno v:
International Journal of Electrical Power & Energy Systems, Vol 159, Iss , Pp 110027- (2024)
Emissivity and absorptivity are important parameters in overhead power line conductors that depend on the conductor surface condition, so their values change as the conductors age. They have an important effect on their thermal behavior, so it is imp
Externí odkaz:
https://doaj.org/article/dab59d9414094209a3cab02a48eaff81
Publikováno v:
International Journal of Electrical Power & Energy Systems, Vol 159, Iss , Pp 110053- (2024)
Eddy current effects, which include skin and proximity effects, are usually associated only with frequency, but they are also affected by temperature. This paper analyzes the effect of both, temperature and frequency on skin and proximity effects in
Externí odkaz:
https://doaj.org/article/337817d30eff4bdea550d4cdbb09b721
Autor:
Jordi-Roger Riba
Publikováno v:
Applied Sciences, Vol 14, Iss 19, p 8982 (2024)
Overhead transmission line conductors are usually helically stranded. The current-carrying section is made of aluminum and/or aluminum alloys. Several factors affect their electrical resistance, such as the conductivity of the conductor material, the
Externí odkaz:
https://doaj.org/article/b4e1a0e0aa364d35b35248fa20bbe737
Publikováno v:
Materials, Vol 17, Iss 18, p 4536 (2024)
Industrial development and population growth have increased the need for higher-capacity power transmission lines. Aluminum conductor steel-supported (ACSS) conductors, a type of high-temperature low-sag (HTLS) conductor, are now widely used in new d
Externí odkaz:
https://doaj.org/article/9a780328e57844cb8cb7c60e2b61c682
Publikováno v:
Batteries, Vol 10, Iss 1, p 10 (2023)
Lithium-ion batteries are key elements in the development of electrical energy storage solutions. However, due to cycling, environmental, and operating conditions, battery capacity tends to degrade over time. Capacity fade is a common indicator of ba
Externí odkaz:
https://doaj.org/article/be303c34ab2840a09a3a3ee6bb73b27a
Autor:
Jordi-Roger Riba
Publikováno v:
Sensors, Vol 23, Iss 22, p 9205 (2023)
Bare-stranded conductors play a critical role in the efficiency and safe operation of transmission lines. The heat generated in the interior of the conductor is conducted radially to the outer surface, creating a radial thermal gradient. The radial t
Externí odkaz:
https://doaj.org/article/a12b0eeea0ad4bf29c0df78052595095
Publikováno v:
Polymers, Vol 15, Iss 18, p 3717 (2023)
With the increasing electrification of the transportation and mobility sectors, polymer insulation materials are inevitably exposed to harsher environments, including exposure to contamination, wide temperature ranges, operation at higher voltages an
Externí odkaz:
https://doaj.org/article/e29f294c5a1c4742a4abd61a3c6a5ccc
Publikováno v:
Machines, Vol 11, Iss 5, p 564 (2023)
Near-infrared (NIR) spectroscopy is a widely used technique for determining the composition of textile fibers. This paper analyzes the possibility of using low-cost portable NIR sensors based on InGaAs PIN photodiode array detectors to acquire the NI
Externí odkaz:
https://doaj.org/article/11c873cda23c4c71a6ae90cc42fe0d02
Publikováno v:
Applied Sciences, Vol 13, Iss 8, p 4938 (2023)
This paper proposes and evaluates the behavior of a new health indicator to estimate the capacity fade of lithium-ion batteries and their state of health (SOH). This health indicator is advantageous because it does not require the acquisition of data
Externí odkaz:
https://doaj.org/article/37de8898e904468fa4b09e96dce4cf0b
Publikováno v:
Aerospace, Vol 10, Iss 3, p 320 (2023)
The combination of the low-pressure environment found in aircraft systems and the gradual electrification of aircraft increases the risk of electrical discharges occurrence. This is an undesirable situation that compromises aircraft safety and compli
Externí odkaz:
https://doaj.org/article/7a62f7c46e8c4ba5a79809df24020111