Non-Uniform Constellations for Polarization Division Multiplexed CO-OFDM Systems

Autor: D. Perez-Calderon, V. Baena Lecuyer, A. C. Oria Oria, J. Garcia Doblado

Publikováno v: Radioengineering, Vol 30, Iss 2, Pp 271-277 (2021)

In this paper we propose a~transmission scheme for Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) systems with Multiple Input - Multiple Output (MIMO) processing. Our proposal consists of the concatenation of two techniques, No

Externí odkaz: https://doaj.org/article/baf1a1e583b64884817a58d6ba3f5cb3

Degradation of the compression strength of spacers made of high-density pressboard used in power transformers under the influence of thermal ageing

Autor: C. Oria, C. Méndez, I. Carrascal, D. Ferreño, A. Ortiz

Publikováno v: Cellulose, 2023, 30(10), 6539-6558

The structural components inside power transformers are commonly made of high-density pressboard, due to its suitable mechanical and dielectric properties. Among these components are the spacers used in the windings of transformers, which are subject

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d51734c3f2fc251a236598ac3a3d995
https://hdl.handle.net/10902/29421

Towards implementing climate services in Peru – The project CLIMANDES

Autor: G. Rosas, S. Gubler, C. Oria, D. Acuña, G. Avalos, M. Begert, E. Castillo, M. Croci-Maspoli, F. Cubas, M. Dapozzo, A. Díaz, D. van Geijtenbeek, M. Jacques, T. Konzelmann, W. Lavado, A. Matos, F. Mauchle, M. Rohrer, A. Rossa, S.C. Scherrer, M. Valdez, M. Valverde, G. Villar, E. Villegas

Publikováno v: Climate Services, Vol 4, Iss C, Pp 30-41 (2016)

CLIMANDES is a pilot twinning project between the National Weather Services of Peru and Switzerland (SENAMHI and MeteoSwiss), developed within the Global Framework for Climate Services of the World Meteorological Organization (WMO). Split in two modu

Externí odkaz: https://doaj.org/article/dd152d0ba91549cba1b7d374a04e1dc7

Study on the mechanical failure of the cellulosic insulation of continuously transposed conductors in power transformers under the influence of short circuits and thermal ageing

Autor: Alfredo Ortiz, C. Oria, Isidro A. Carrascal, Diego Ferreño, Inmaculada Fernández

Publikováno v: Engineering Failure Analysis, 2021, 124, 105356-(CORRIGENDUM), 2021, 128, 105543
UCrea Repositorio Abierto de la Universidad de Cantabria
Universidad de Cantabria (UC)
Engineering Failure Analysis, 2021, 124, 105356

The dielectric paper of power transformers is subjected to ageing caused by high temperatures and chemical reactions in the dielectric oil. The electromagnetic forces that affect the conductor can cause the breakage of the paper and even the end of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2948d1618f6717ae5b303ff24d18609
https://doi.org/10.1016/j.engfailanal.2021.105356

Mechanical Behaviour of the Cellulosic Dielectric Materials of Windings in Power Transformers in Operation

Autor: Isidro A. Carrascal, Inmaculada Fernández, Diego Ferreño, Alfredo Ortiz, C. Oria

Publikováno v: XXIII International Conference on Electrical Machines (ICEM), 2018, Alexandroupoli, Grecia, 2400-2406
UCrea Repositorio Abierto de la Universidad de Cantabria
Universidad de Cantabria (UC)

Power transformers are crucial elements in electrical systems, and the end of their useful life is commonly conditioned by the degradation of the cellulosic insulation materials inside them. These materials are subjected to elevated temperatures and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::081f939617bff7eb3c0dfa7e40951905
https://doi.org/10.1109/icelmach.2018.8506963