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Controlling an induction machine has been a difficult task since its invention, especially at low speed operation and during highly dynamic regimes, where the required torque/speed changes constantly. This paper aims to present the validation and implementation of a deadbeat direct torque and flux control scheme (DB-DTFC) for induction machines on a multilevel platform consisting on an FPGA, a rea
The electron transport chain in mitochondria of different organisms contains a mixture of common and specialised components. The specialised enzymes form branches to the universal electron path, especially at the level of ubiquinone, and allow the chain to adjust to different cellular and metabolic requirements. In plants, specialised components have been known for a long time. However, recently,
Popular Abstract in Swedish Nanotrådar har potential att bli en mycket flexibel plattform för design av halvledarkomponenter. I nanotrådar är det möjligt att bilda kristallstrukturer som normalt sett inte förekommer i bulkmaterial, och att kombinera olika III-V och grupp IV material i axiella eller radiella heterostrukturer. Eftersom så pass komplicerade strukturer kan skapas, både avsiktligt och Nanowires have the potential to be a very flexible platform for the design of semiconductor devices. In nanowires it is possible to form crystal structures not found in the bulk materials under normal conditions, and to combine different III-V and group IV materials into axial or radial heterostructures. As quite complex structures can be formed, both intentionally and unintentionally, characteriz
The chapter gives a survey of familyrelated topics (betrothal, marriage, property devolution, childrearing) in medieval Sweden.
The introduction of guard channels in a cellular network is a method for giving priority to on-going calls by having channels exclusively reserved for handover purposes. Herein, an adaptive measurement-based dynamic guard channel scheme is introduced. The proposed scheme uses the number of on-going calls in adjacent cells and measurements of handover probabilities to determine the amount of guard
Energy efficiency in industry has been a priority in Chinese policy and planning for more than twenty years. Great achievements in this area have been made. Still, in many cases a considerable potential for improved industrial energy efficiency remains, not least in terms of enhancement of technical capacity. Cement production is one sector where this is evident. Policies have been devised to addr
Kapitlet är en finsk översättning av bidraget Personlighetspsykologi och religion i Geels & Wikström, Den religiösa människan. En introduktion till religionspsykologin. Natur och Kultur, 2006.
Popular Abstract in Swedish Lyhördhet. Studenters uppfattningar av lyhördhet i omvårdnad och utbildningAvhandlingen handlar om lyhördhet i omvårdnad och utbildning. Ett problem är att ordet lyhördhet endast finns på de nordiska språken. I engelska, tyska och franska ordböcker omskrivs lyhördhet på olika sätt utan att egentligen ges hela den betydelse som det har i nordiska språk. I engelskan översThe word lyhördhet has its origin in Danish and exists only in the Nordic languages. In this summary the Swedish word is used in italics without translation.The subject of this dissertation is lyhördhet in nursing education, what lyhördhet can be and how it can be made a valuable part of educations involving care of human beings, in particular nursing education.The term lyhördhet has not previousl
Brytningen mellan svenskt 1920 och 1930-tal och vi kan tolka innehåll och influenser till förändingen.
Economic and environmental concerns will slow down the expansion of the transmission system in many countries. The addition of new transmission lines will be few and far between. The de-regulation of the power supply will introduce new power flow patterns on the bulk transmission systems. The net result is that the power systems will operate much closer to their transfer limits and operate there m
Lignin from black liquor in the kraft pulping process is a potential raw material for production of renewable chemicals and fuels. However, an efficient extraction method for the lignin from the black liquor is needed. Therefore, two new processes have been designed, which both utilize membrane filtration for the isolation of lignin from the kraft black liquor. The first one includes precipitation
Board evaluations can contribute to effective boards and improved corporate financial performance. The increasing interest in the practice of board evaluations, however, calls for a more systematic and careful approach than has been employed in the past. While most attention has primarily been focused on the content of board evaluations, this article outlines the features of various possible board
