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A machine for magnetizing permanent magnets is under development at LTH. The idea of the machine is to affect only small pieces of a magnet at the time to obtain magnets with an arbitrary flux density, of course with respect to the magnetic material. The final machine is supposed to work in a closed loop fashion. Every part of the magnet is magnetized, measured and magnetized again with a flux den
In this thesis a Direct Current Control (DCC) is implemented for controlling a PMSM. The controller should be implemented in an already existing program. This program is used for testing electrical machines. The new testing method is called Dynamic braking, more information about this method can be read in the report "Performance and efficiency evaluation of FPGA controlled IPMSM under dynami
Large quantities and numbers of organic compounds (OCs) from industries and domestic sources enter the wastewater treatment plants (WWTPs) everyday, which is an ever-increasing issue in modern society. In WWTPs, the pollutants are either degraded or emitted to the air, the effluent (water) or the sludge (biosolids). Even though the sludge may contain toxic contaminants and heavy metals, there is a
New technologies developed (new ways of energy generation and consumption) are promoting the introduction of improvements at electricity networks. Currently, European legislation is promoting changes in electricity networks of member states. These changes include new technologies to facilitate the introduction of renewable energy sources to the grid and have a more efficient use of energy. Smart g
Induction machines have been used in a wide range of applications due to its robustness and its low price. These characteristics make the induction machine a suitable option for industrial and home environments especially for those applications where the required speed is constant and the load does not change drastically. As an alternative to the induction machine, the synchronous machine, particu
Militärkuppen i Chile ägde rum den 11 september 1973, därefter flydde många chilenare till Sverige. De bildade en rad föreningar, allt ifrån politiska föreningar till kulturföreningar. Syftet med denna uppsats är att undersöka hur moderna diasporagrupper organiserar sina liv i ett nytt land och i en ny kultur. Den huvudsakliga frågeställningen lyder Hur argumenterar några chilenska medlemmar för b
One of the biggest question in physics is to investigate the early universe or big bang. 10 µs after big bang, there existed a phase of transition called QGP (Quark Gluon Plasma). In this phase of transition quarks and gluon were free from each other. In normal life neutron and proton consist of three quarks with exchanging gluons. To simulate QGP scientists has built the large accelerator at CERN
Introduction: This work aims to evaluate the possibility to transfer electrical power from a metal plate to the steel-cord within a car tire. If the tire stands on the plate, a connecting surface occurs which can be interpreted as a capacitor, where the rubber compound acts as a dielectric. Method: First the impedance of the tire is evaluated: An analytical model is set-up to describe the system;
Inom film och TV branschen har begreppet produktplacering existerat i flera årtionden och har fungerat som en effektiv marknadsföringsmetod för företag som velat göra reklam för sina produkter och tjänster. Syftet med produktplacering är att konsumenter ska uppfatta det kommersiella budskapet utan att vara medvetna om vad de utsätts för. Produktplacering har på senare år blivit alltmer subtil och
Voltage stability is an important issue in electrical power system. As a result, several industrial-grade power system simulator tools are developed in order to estimate the behaviour of the electric power system under certain conditions. Several tests have been developed to compare and to check different simulators and to prove their correct performance. Comparisons between commercial simulation
A small wind power plant connected to the grid has been modeled in Modelica/ Dymola and controlled using external controllers written in C++. The small wind power plant consists of three wind power units with a nominal power of 3kW and one grid connection interconnected with an internal DCgrid. All the controls needed for control and optimization for the operation of the individual parts in the pl
I denna uppsats studerar jag hur manlighet konstrueras inom en grupp arbetare, närmare bestämt typografer. Materialet som ligger till grund för analysen är dessa typografers berättelser rörande deras yrkesverksamma tid. Syftet är att med Laclau & Mouffes diskursteori studera vad som konstituerar manlighet och hur den konstrueras i typografernas texter. Manlighetsforskarna Mosse samt Ekenstam &
Det har länge diskuterats huruvida PRV:s officialprövning av relativa registreringshinder bör avskaffas på varumärkesområdet. Inför den nya varumärkeslagen som trädde i kraft i juli 2011 diskuterades frågan först av Varumärkeskommittén år 2001 och sedan på nytt år 2008 efter begäran från näringslivet. Officialprövningen bibehölls dock oförändrad med motiveringen att användarna ansåg att fördelarnaIt has been discussed for a long time whether the PRV’s examination of relative grounds for refusal regarding trademarks should be abolished or not. Before the new Trademarks Act came into force in July 2011, the question was first discussed by the Brand Committee in 2001 and then again in 2008 after requests from the industry. However, the official examination remained unaffected, on the grounds
Problem/Bakgrund: Varför har enskilda individer som fångas på bild av övervakningskameror på allmän plats inte rätt att få tillgång till bildmaterial som de själva förekommer i? Syfte: Uppsatsens syfte är att undersöka huruvida utlämnande av bildmaterial till enskilda individer som fångats på bild av övervakningskameror på allmän plats skulle fungera stärkande för den personliga integriteten hos
LYCCA is a detector system consisting of different types of detectors which can be used flexibly to meet the individual requirements of different experiments focused on studying exotic nuclei far off the line of stability. It was developed for the HISPEC/DESPEC programme which is part of the NUSTAR collaboration at the future Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany. T
This report incorporates a product styling development concept carried out on Scania a vehicle manufacturer known for its premium long haulage trucks, located in Södertälje, Sweden. The report consists of the development of the writers’ conception and implementation of the term “Driver Focus” on Scanias truck interior. The project is carried out using various different industrial design techniques
Tetra Pak is a large scale organization that provides its customers with a food packaging solution based on laminated carton board in various package formats. The packaging material is produced in more than 50 converting factories represented world wide. The production develops the material in roll form that are loadable in the filling machines. Each roll arrives to the filling site with a barcode
