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Modeling and Parameter Estimation of Double-Star Permanent Magnet Synchronous Machines
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 05.03.2014)The power rating of wind turbines is constantly increasing; however, keeping the voltage rating at the low-voltage level results in high kilo-ampere currents. An alternative for increasing the power levels without raising ... -
Modeling and system analysis of electrically driven mechatronic systems
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 28.11.2022)A mechatronic system consists of mechanics, power electronics, and control electronics. Thus, designing a mechatronic system requires multidisciplinary knowledge. As the capabilities of microprocessors have increased and ... -
Modeling dynamic behavior in tilting pad gas journal bearings
Acta Universitatis LappeenrantaensisURN:ISSN:1456-4491 (2004)Thisresearch deals with the dynamic modeling of gas lubricated tilting pad journal bearings provided with spring supported pads, including experimental verification of the computation. On the basis of a mathematical model ... -
Modeling of electrolyte sorption – from phase equilibria to dynamic separation systems
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 02.12.2011)In this thesis, general approach is devised to model electrolyte sorption from aqueous solutions on solid materials. Electrolyte sorption is often considered as unwanted phenomenon in ion exchange and its potential as an ... -
Modeling of non-isothermalvapor membrane separation with thermodynamic models and generalized mass transfer equations
Acta Universitatis LappeenrantaensisURN:ISSN:1456-4491 (30.05.2002)A rigorous unit operation model is developed for vapor membrane separation. The new model is able to describe temperature, pressure, and concentration dependent permeation as wellreal fluid effects in vapor and gas separation ... -
Modeling reaction kinetics and mass transfer in ozonation in water solutions
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 18.12.2008)This dissertation is based on four articles dealing with modeling of ozonation. The literature part of this considers some models for hydrodynamics in bubble column simulation. A literature review of methods for obtaining ... -
Modeling the effects of unsteady flow patterns on the fireside ash fouling in tube arrays of kraft and coal-fired boilers
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 20.10.2016)The modeling of ash deposition trends, rates, and shapes has been the target of numerous investigations since slagging and fouling constitute a major penalizing factor in boiler performance. Also, they are the most usual ... -
Modeling the transport phenomena within arterial wall: porous media approach
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 03.10.2008)The transport of macromolecules, such as low-density lipoprotein (LDL), and their accumulation in the layers of the arterial wall play a critical role in the creation and development of atherosclerosis. Atherosclerosis is ... -
Modelling and Disturbance Compensation of a Permanent Magnet Linear Motor with a Discontinuous Track
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 11.06.2019)It is very common that industrial applications require linear motion in some part of the process, especially in transportation of products from place to place. Traditional technologies to produce short-distance linear ... -
Modelling Cutting States in Rough Turning of 34CrNiMo6 Steel
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 05.06.2015)Rough turning is an important form of manufacturing cylinder-symmetric parts. Thus far, increasing the level of automation in rough turning has included process monitoring methods or adaptive turning control methods that ... -
Modelling flexible asset management in industrial maintenance companies and networks
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 22.11.2013)The tightening competition and increasing dynamism have created an emerging need for flexible asset management. This means that the changes of market demand should be responded to with adjustments in the amount of assets ... -
Modelling nucleating flows of steam
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 06.09.2017)The nucleation-induced condensation of steam in the course of expansion in turbines gives rise to the loss of efficiency and blading erosion. Numerical modelling is a precious asset to predict and understand the condensation ... -
Modelling of changes in electricity end-use and their impacts on electricity distribution
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 27.11.2015)The electricity distribution sector will face significant changes in the future. Increasing reliability demands will call for major network investments. At the same time, electricity end-use is undergoing profound changes. ... -
Modelling of combustion and sorbent reactions in three-dimensional flow environment of a circulating fluidized bed furnace
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 02.12.2011)This thesis presents a three-dimensional, semi-empirical, steady state model for simulating the combustion, gasification, and formation of emissions in circulating fluidized bed (CFB) processes. In a large-scale CFB ... -
Modelling of component dynamics and system integration in power-to-gas process
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 09.12.2021)Climate change mitigation requires reducing of greenhouse gas emissions, especially carbon dioxide (CO2). Reducing fossil fuel usage is the main method of combatting greenhouse gas emissions in the energy sector, together ... -
Modelling of torrefaction and hydrothermal carbonization and heat integration of torrefaction with a CHP plant
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 09.12.2016)Biomass provides an excellent opportunity to increase the use of local resources and promote renewable energy generation. The considerable diversity of biomass materials and differences in their chemical structure require ... -
Modelling the operation of short-term electricity market in Russia
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 08.12.2017)Although the wholesale electricity market in Russia has been in operation for more than a decade, its functioning still remains largely unexplored in the western literature. This doctoral dissertation proposes a bottom-up ... -
Modelling the value of fleet data in the ecosystems of asset management
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 14.08.2020)The emergence of technologies, e.g. Internet of Things (IoT), cloud services and advanced analytics, have enabled diverse data utilization and service development based on the data. In asset management, assets, such as ... -
Modification of carbon-based electrodes using metal nanostructures : Application to voltammetric determination of some pharmaceutical and biological compounds
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 16.08.2019)In this study, new modified carbon-based electrodes were fabricated and applied in the detection and determination of several medicines and water pollutants. Modification enhanced the use of these electrodes for analytical ... -
Modification of Photocatalyst with Enhanced Photocatalytic Activity for Water
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 11.06.2015)Increasing demand and shortage of energy resources and clean water due to the rapid development of industry, population growth and long term droughts have become an issue worldwide. As a result, global warming, long term ...