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5338 Uppsatser om Electrical Power Systems - Sida 60 av 356

Utredning och implementering av en prototyp för integration av Prevas FOCS och ABB 800xA

ABB and Prevas have initiated a collaboration to sell a system to optimize steel industry furnaces, called FOCS. The purpose of this thesis is to investigate possibilities for integrating Prevas FOCS and ABB 800xA.The result of the investigation is used for an implementation of a prototype of the integrated system. The study shows a general method that can be used when implementing two software systems. The prototype of the integrated systems is made with usability principles in mind. This is a very important aspect in order to create a good working environment for the operators of a steel plant.

Den flerspråkiga bibliotekskatalogen: Hantering av icke-latinsk skrift på bibliotek

The main purpose of this thesis has been to investigate librarians opinions about the need for and possibility to use non-roman script in library catalogues. We have also investigated the routines of handling materials in non-roman scripts in two Swedish libraries. The investigation was made in the light of the recent shift in character set in the Swedish National Library Catalogue Libris. This change will enable use of multiple writing systems in the future.Our findings are that a multicultural society requires special consideration to the needs of citizens who speak other languages than the majority of the population. This becomes difficult when the languages spoken have a different writing system than the one used by the majority.

Sensorer och system i mjölkkobesättningar : en litteraturstudie

The trend in milk production is similar in Sweden and across the world; the farms are getting fewer but increasingly bigger. The costs for hiring workers are increasing, which results in more cows per animal keeper. Sensors can then be a great tool for keeping track of animals which need special attention. With a reported decreasing fertility, sensors that can detect oestrus even at low levels can be especially helpful in bigger herds to pinpoint the cows that may be in oestrus. The number of farms with dairy cows that install AMS, Automatic Milking Systems, are increasing, and that also increases the need for sensors to control milk quality and composition when there is no visual control of the milk by a milker before milking starts.For the sensor data to be useful you have to have software designed to analyze and interpret the data to get relevant information that the farmer can use.

Demokrati- Folkets styre eller Mediernas makt? : - en kvantitativ studie av DN: s nyhetsrapportering kring riksdagsvalet år 2006.

A B S T R A C TTitle: Democracy- Choice of the people or the voice of media? (Demokrati- Folkets styre eller Mediernas Makt?)Number of pages: 36Author: Carolina VallinTutor: Else NygrenCourse: Media and Communication Studies CPeriod: Autumn term 2006University: Division of Media and Communication, Department of Information Science, Uppsala UniversityPurpose/Aim: The purpose with this essay is to discuss which influence media has on the democracy.Material/Method: Qualitative explorative research method is used to see how much space the newspaper Dagens Nyheter gave to the parties represented in the parliament, and compare the results with the numbers the parties received in the general election 2006.Main results: This research showed similar results in the survey made of DN and the numbers the parties received in the general election 2006. Media can?t decide how people should vote in a election, but they can influence what citizens think and talk about by having the power to choose which information that shows on the agenda.Key Words: Dagens Nyheter, Agenda setting, Media, Power and Democracy..

Ny hemsida till Lindt & Sprüngli Sverige : Genom informationshantering i Magento och TYPO3

This report describes the working process and creation of a new website for Lindt & Sprüngli Sweden with the help of the content management systems Magento and TYPO3. The report shows how different elements are created and published on the website, how the education in these systems was acquired and how contact with third party companies has been initiated and maintained. It also accounts for what is shown on the website as well as why it is shown. The goal with this project is to deliver a complete website to Lindt & Sprüngli Sweden where customers can find information about products as well as the company. The results of this project was a website that was launched on www.lindt.se on the 17th of June 2015..

1553-Simulator. In-/uppspelning av databusstrafik med hjälp av FPGA

At Saab Aerospace in Linköping, components for measurement systems to the fighter aircraft JAS 39 Gripen are developed. In this activity you sometimes want to record the traffic transmitted on the data busses that connects different sys-tems. This traffic on the data busses is using the military standard MIL-STD-1553. This project has aimed to create a system for recording and sending 1553-data. The system is used on an ordinary personal computer, equipped with a recon- figurable I/O card that among others has a programmable logic circuit (FPGA).

På olika villkor : En intervjustudie om häktades och kriminalvårdares upplevelser av häktet

Different Perspectives is a study of detainees' and guards' experiences of the remand prison. The result of the study shows that the remand prison brings forth the individuals anxiety, stress and fear. The individual detained in remand prison have a great need for contact with their families, but also with the guards. In the remand prison there is always a great level of control and always some kind of power practised. It is the guards who have the power and the competences to make the individuals detained in remand prison follow the rules and do what they have been told.

Ekologiskt kopplade institutioner inom jordbrukssystemet :

The farming system is the basis of human existence through its production of provisions for man. By a continuous exchange of information, energy and material, between the ecosystems and the social systems, the farming system becomes an emergent property. The system's own properties, in the sense of farming methods, circulations and institutions, evolve through an adaptive process. Understanding this process and constantly learn from it, is the starting point for creating a sustainable development within farming systems. Thus, future farming system has to develop strategies that produce food provisions while at the same time takes into consideration the ecosystem's resilience and its integrity, but which also enables an ethical discussion. The institutions within the farming system are understood as links between the ecosystems and the social systems.

Hantering av småskalig elproduktion : Utveckling av modell för dokumentation och elkvalitetsberäkningar

The interest in small-scale electricity in Sweden has increased strongly in recent years. The interest is noticeable both among politicians to increase the share of renewables in the energy mix, and among electricity consumers to partially replace purchased electricity with self-produced. This has resulted in a significant increase of electricity production in low voltage grids in recent years, and the trend appears to continue in the coming years. The majority of the new production plants are solar cells, followed by wind turbines, and it is also in these the greatest efforts are made in this paper.Distributed generation is often seen as something positive since it will contribute to reduced transmission losses and reduced voltage drop in the networks, and that it increases the share of electricity from renewable sources. In cases where the grids are not strong enough, or in other ways not adapted to manage the installed production, power quality may be adversely affected.

Orsaker och sammanhang kring avvikelser i processen med prefabricerat byggande

The purpose of this thesis has been to develop a tool for modelling and simulating the nuclear plant Ringhals 3. The model should be used to improve the knowledge on the dynamics of the plant. Ringhals 3 is being upgraded to produce more power and a tool for analyzing the new operating conditions is needed.The work in this thesis has consisted of improving and developing an existing model of Ringhals 3 made with the modelling tool Dymola. The model has been validated by comparing the results of a simulated house load transient with data from the actual plant. Validation shows good agreement with data from the real plant.

Energieffektivisering - Laholms kyrkliga samfällighets kulturhistoriska byggnader

Energy efficiency is today more important than ever, mainly due to the high energy prices and the approaching climate changes. Heating of buildings is an essential area within energy efficiency. Many buildings are old and were built at a time when the energy prices were low and the term ?energy efficiency? was unheard of. By applying today?s broad range of energy saving actions on these old, and thereby often, heating ineffective buildings, this area has a large potential in reducing energy consumption and costs.Churches and chapels are generally old buildings with, in many cases, ineffective heating systems and therefore consume much more energy than needed.

Mät och loggningsutrustning för spänningstransienter

To be able to measure high-surge voltages and transients with short rise times youneed measuring instruments with a high sampling frequency and large Bandwidth.These surges and transients occur primarily at lightning but can also occur at forexample at connecting errors at an electrical switch-gear. This report describes thework with finding two solutions for measuring and log data from these surges andtransients. One temporary solution where a measurement program has beendeveloped. A second solution where different company solutions have been analyzedto decide which fits best. For these measurement solutions two solutions for bringingdown the voltage has been used.

Digital Airsoftstyrning : DAC Mark.I

The Airsoft Community always search for realism and optimal performance.When the performance and/or the realism in your AEG1 aren?t enough you turn to modifications toimprove the weapon. But to manufacture such modifications isn?t that easy, hence you turn tocompanies that are specialized in creating such devices.The goal with this project is to create a prototype of a modification called ?Programmable MOSFET?and targets optimization of the electrical components within the AEG. This means that you digitalizethe control of your AEG thus entails new functions and more stability to the system that isn?t possiblewith its mechanical predecessor.A prototype has been manufactured and programmed with functions according to requirementspecificationsthen it was tested on an airsoft-gearbox with rewarding results.

Om leken i nödvändigheten

This study aims to examine play as a phenomena from a phenomenological approach. This I do by discussing a dominant approach to play, an perspective which is reproduced in the context of pre-school and in where the play and learning is in single focus. Using alternative perspective on play, mainly by Gadamer and Bakthtins philosophical thoughts about the feast or the carnival, contents differ significantly from educational or developmental psychology perspectives. I open up for an understanding of what play as ontology can be understood as, and thereby enable second readings. I illustrate this thought by an empirical example from a pre-school context which where created alongside with the children in the study.

Transformatordiagnostik genom dissolverad gasanalys

The transformer is one of the most common and most important electric machines for power companies. Cost of investment and the economic worth of a transformer are counted in millions of SEK. Because of that, proper maintenance actions that may lead to longer technical life time should be the aim in all situations.The aim with the report was to perform transformer diagnosis by dissolved gas analysis on Umeå Energi AB´s power transformers and a risk assessment. The report should also contribute to longer life time for the transformers.Oil samples were taken from each transformer two times. The first sample in summer 2013 and the second in April 2014.

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