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The role of renewable energy based seawater reverse osmosis (SWRO) in meeting the global water challenges in the decades to come
(Lappeenranta-Lahti University of Technology LUT, 2020-11-25)
Renewable energy (RE) powered desalination is rapidly gaining interest as a means to augment the increasingly stressed global water supply. This thesis introduces and describes the ways in which 100% RE-based seawater ...
Energy security evaluation for the present and the future on a global level
(Lappeenranta-Lahti University of Technology LUT, 2020-10-13)
Energy Security is a universal concern for all stakeholders and achieving energy security is a crucial objective for all societies. Therefore, energy security became a major part of national security with the ability to ...
Control design issues in grid-connected single -phase converters, with the focus on power factor correction
(Lappeenranta-Lahti University of Technology LUT, 2020-09-25)
Electrical equipment is most commonly powered from a mains connection. The mains alternating voltage is rectified, isolated, and regulated in a power supply. The power supply acts as an interface between the mains voltage ...
In-depth analysis of the global power infrastructure—Opportunities for sustainable evolution of the power sector
(Lappeenranta-Lahti University of Technology LUT, 2020-11-27)
Over the decades, the power sector has continuously evolved, and the strategy used to provide its service has changed dramatically over time and continues to do so. Therefore, it is of paramount importance to analyse in ...
Assessing the applicability of low voltage direct current in electricity distribution : key factors and design aspects
(Lappeenranta-Lahti University of Technology LUT, 2020-11-20)
In many countries, the electricity distribution companies are facing the challenge of how to develop the networks effectively and respond to the future needs of societies. Changes in the electricity end use, aging network ...
Application of software-defined radio for power-line-communication-based monitoring
(Lappeenranta-Lahti University of Technology LUT, 2020-02-07)
Power line communication (PLC) is an established telecommunication technology. A PLC-based communication system has the advantage of securing data. transmission over already existing power line networks. In this way, an ...
Energy efficient hydrogen production by water electrolysis
(Lappeenranta-Lahti University of Technology LUT, 2020-02-28)
Hydrogen is the most abundant element in the universe. On Earth, it not only forms water molecules, but also commonly combines with carbon into hydrocarbons that power the current world economy. The use of these natural ...
Identification of magnetically levitated machines
(Lappeenranta-Lahti University of Technology LUT, 2020-06-16)
Magnetically levitated machines use magnetic levitation to maintain the separation between the bearing races. They offer various benefits compared with other types of bearings: no contact between the bearing races, the ...
Modeling and Analysis of a High-Speed Solid-Rotor Induction Machine
(Lappeenranta-Lahti University of Technology, 2020-04-28)
Over the last few decades, high-speed electrical machines have become more popular than ever before because of the rapid development of power electronics, magnetic materials, and control engineering. Among all the machine ...
Usability and limitations of behavioural component models in IGBT short-circuit modelling
(Lappeenranta-Lahti University of Technology LUT, 2020-09-04)
Power electronic device design and electrical system analysis can be enhanced by applying modern simulation tools, which make it possible to decrease the use of costly and time-consuming prototypes. One very critical ...