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Performance benchmarking and incentive regulation – considerations of directing signals for electricity distribution companies
(Lappeenranta University of Technology, 2008-06-18)
After the restructuring process of the power supply industry, which for instance in Finland took place in the mid-1990s, free competition was introduced for the production and sale of electricity. Nevertheless, natural ...
Monitoring of crystallization processes by using infrared spectroscopy and multivariate methods
(2006-09-01)
Väitöstutkimuksessa on tarkasteltuinfrapunaspektroskopian ja monimuuttujaisten aineistonkäsittelymenetelmien soveltamista kiteytysprosessin monitoroinnissa ja kidemäisen tuotteen analysoinnissa. Parhaillaan kiteytysprose ...
Converter-flux-based current control of voltage source PWM rectifiers - analysis and implementation
(2003-12-12)
Pulsewidth-modulated (PWM) rectifier technology is increasingly used in industrial applications like variable-speed motor drives, since it offers several desired features such as sinusoidal input currents, controllable ...
Radio Frequency Measurement Method for Detecting Bearing Currents in Induction Motors
(Lappeenranta University of Technology, 2009-05-28)
Induction motors are widely used in industry, and they are generally considered very reliable. They often have a critical role in industrial processes, and their failure can lead to significant losses as a result of shutdown ...
Towards open access networks – prototyping with the Lappeenranta model
(Lappeenranta University of Technology, 2009-10-02)
The provision of Internet access to large numbers has traditionally been under the control of operators, who have built closed access networks for connecting customers. As the access network (i.e. the last mile to the ...
Railcarrier in Intermodal Freight Transportation Network
(2003-12-18)
The major objective of this thesis is to describe and analyse how a railcarrier is engaged in an intermodal freight transportation network through its role and position. Because of the fact that the role as a conceptualisation ...
In Search of Corporate Renewal: How to Benefit from Corporate Venturing?
(2007-12-18)
Despite the rapid change in today's business environment there are relatively few studies about corporate renewal. This study aims for its part at filling that research gap by studying the concepts of strategy, corporate ...
Haja-asutusalueiden sähkönjakelujärjestelmien kehittäminen – erityisesti 1000 V jakelujännitteen käyttömahdollisuudet
(Lappeenranta University of Technology, 2005-03-18)
Yhteiskunnan riippuvuus sähköstä on lisääntynyt voimakkaasti viime vuosikymmenien aikana. Sähkönjakelussa esiintyneet lyhyet ja pitkät keskeytykset ovat osoittaneet yhteiskunnan haavoittuvuuden ja yhteiskunta kestää entistä ...
Modeling of non-isothermalvapor membrane separation with thermodynamic models and generalized mass transfer equations
(2002-05-30)
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 ...
Automated formulation of optimisation models for steel beam structures
(2002-12-13)
Over 70% of the total costs of an end product are consequences of decisions that are made during the design process. A search for optimal cross-sections will often have only a marginal effect on the amount of material used ...