Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Roman Hrbac"'
Publikováno v:
Elektronika ir Elektrotechnika, Vol 29, Iss 2, Pp 12-18 (2023)
Estimating the electric power used by railway vehicles is an important factor in the planning of future power consumption, looking for possibilities to reduce the use of electric power and therefore also reduce carbon emissions. To improve the estima
Externí odkaz:
https://doaj.org/article/43b23aa5e054442c9e4356c733f2d9c1
Publikováno v:
Elektronika ir Elektrotechnika, Vol 26, Iss 4, Pp 25-31 (2020)
This article deals with the development of capacitive voltage divider for high voltage measurements and presents a method of analysis and optimization of its parameters. This divider is a part of a combined voltage and current sensor for measurements
Externí odkaz:
https://doaj.org/article/3f2202f4db2c4e62a28747ad881010da
Autor:
Roman Hrbac, Libor Hrdina, Vaclav Kolar, Zdenek Slanina, Vojtech Blazek, Tomas Vantuch, Mikołaj Bartłomiejczyk, Stanislav Misak
Publikováno v:
Sensors, Vol 22, Iss 21, p 8473 (2022)
This paper deals with developing and implementing a bidirectional galvanically isolated on-board charger of a high-power density. The power density of the new charger was 4 kW/kg and 2.46 kW/dm3, and the maximum efficiency was 96.4% at 3.4 kW. Due to
Externí odkaz:
https://doaj.org/article/fcc8007d86d148a785482fef13cac4c3
Publikováno v:
Elektronika ir Elektrotechnika, Vol 25, Iss 3, Pp 43-49 (2019)
The colour appearance of light sources has a major impact on how people perceive space. With LED illumination lighting, the colour output can be tuned to virtually any perceivable colour, including any hue of white light. It has been established that
Externí odkaz:
https://doaj.org/article/9d1767a2d1b342e1a6555b61db2b2e13
Publikováno v:
Elektronika ir Elektrotechnika, Vol 24, Iss 5, Pp 51-56 (2018)
For the past two years, the authors of this paper have been working on the development of a new regulated electrical drainage system for tram tracks, which may also be used on railways in the future. When this drainage is used on train tracks equippe
Externí odkaz:
https://doaj.org/article/5e58b5b50d9d470e8cdd6e385c945c08
Publikováno v:
Advances in Electrical and Electronic Engineering, Vol 16, Iss 2, Pp 205-210 (2018)
Electric drainage is a power electronic device used to protect underground metal devices (such as piping) from the corrosive effects of stray currents. Stray currents are usually caused by DC electric traction, such as trams or railways. In places wh
Externí odkaz:
https://doaj.org/article/11655b53961d461ca297247b95397d99
Publikováno v:
Advances in Electrical and Electronic Engineering, Vol 5, Iss 1, Pp 68-71 (2006)
The flux linkage of switched reluctance motor (SRM) depends on the stator current and position between the rotor and stator poles. The fact determines that during control of SRM current with the help of classical PI controllers in a wide regulation r
Externí odkaz:
https://doaj.org/article/18f5cc49cd76462793a3b3218a6959ce
Publikováno v:
Elektronika ir Elektrotechnika, Vol 26, Iss 4, Pp 25-31 (2020)
This article deals with the development of capacitive voltage divider for high voltage measurements and presents a method of analysis and optimization of its parameters. This divider is a part of a combined voltage and current sensor for measurements
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d5bfa40933b8291fd14f3398d2dcb88
https://doi.org/10.5755/j01.eie.26.4.25888
https://doi.org/10.5755/j01.eie.26.4.25888
Publikováno v:
Lecture Notes in Networks and Systems ISBN: 9783030871772
The article presents the problem of eddy-current losses in rotor elements of a permanent magnet motor with high power density. These losses can cause excessive heating of the rotor components and even demagnetization of the permanent magnets. The sub
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8684a0baaaf3f4ca726c5886ad421f1f
https://doi.org/10.1007/978-3-030-87178-9_50
https://doi.org/10.1007/978-3-030-87178-9_50
Publikováno v:
IFAC-PapersOnLine. 51:396-401
Aiming at increased lighting comfort, new types of light fixtures may currently be seen that may not only be dimmed, but can also adjust the temperature of the light. The ability to adjust the brightness and color temperature is not only supposed to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b85d30c33487054bf25bcfd942359308
https://doi.org/10.1016/j.ifacol.2018.07.186
https://doi.org/10.1016/j.ifacol.2018.07.186