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Optimization of electricity supply to mobile base station with design of PV systems : A case study in Accra Metropolis
(2018)
This study explores the optimization of electricity supply to mobile base station with the modelling of a hybrid system configuration in Accra, the capital city of Ghana. The hybrid system deployed is to enhance sustainability, ...
Taajuusmuuttajan hyödyt ruuvikuljetinkäytöissä
(2018)
Screw conveyors are the fourth biggest energy consumption group of industrial electrical motors. In this thesis, sensorless frequency converter systems are researched with main objective in maximizing energy efficiency. ...
Increasing agricultural land use efficiency and generating electricity using solar modules
(2018)
The continuous rise in electricity demand across the globe has been a major source of carbon dioxide (CO2) emissions and other gases such as greenhouse gases (GHGs) resulting from the excessive use of crude oil and fossil ...
Oikosulkumoottorin laskentamallin toimintaperiaate ja tarkkuuden verifiointi
(2018)
Monet sähkömoottoreilla toimivat pumppujärjestelmät ovat vaikeissa paikoissa huollon kannalta. Niiden kunnosta ja toiminnasta olisi kuitenkin hyvä pitää tarkkaa seurantaa, sillä vikaantuessaan ne voivat aiheuttaa suuria ...
Dynamic Core-Annulus Model of Circulating Fluidized Bed Boilers
(2018)
This Master’s Thesis presents a dynamic core-annulus model of circulating fluidized bed (CFB) boilers which is implemented in Apros simulation software. In describing and verifying the model, the focus is on the solids ...
Modeling and PID-control design for bearingless high speed motor drive
(2018)
The demand for higher rotational speeds and the more and more challenging work environments have pushed magnetic bearings and bearingless machines to be an extensive multidisciplinary field of research. Magnetic bearings ...