Sökning: "starting"

Visar resultat 1 - 5 av 2351 avhandlingar innehållade ordet starting.

  1. 1. On Inter-bar Currents in Induction Motors with Cast Aluminium and Cast Copper Rotors

    Författare :Alexander Stening; Chandur Sadarangani; Ola Aglén; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Induction motors; Inter-bar currents; Copper rotors; Aluminium rotors; Starting torque; Asynchronous torques; Starting current; Stray losses; Electrical engineering; electronics and photonics; Elektroteknik; elektronik och fotonik;

    Sammanfattning : This thesis presents a study of the effects of inter-bar currents on inductionmotor starting performance and stray-load losses. The work is focused on theperformance differences between aluminium and copper casted rotors.A method to predict the stator current when starting direct-on-line isdeveloped. LÄS MER

  3. 2. Attitudes towards starting small business : youth and local authorities in a changing labour market?

    Författare :Sara Cervantes; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industrial Work Environment; Industriell produktionsmiljö;

    Sammanfattning : The aim of this thesis is to examine the extent to which a local authority can change the attitudes of its youth, away from public sector employment to the development of small business, through education. Traditionally the region of Norrbotten has favoured the public sector. LÄS MER

  4. 3. Model-checking and Model-based Testing of Automotive Embedded Systems : Starting from the System Architecture

    Författare :Raluca Marinescu; Cristina Seceleanu; Bernhard Aichernig; Mälardalens högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Computer Science; datavetenskap;

    Sammanfattning : Nowadays, modern vehicles are equipped with electrical and electronic systems that implement highly complex functions such as anti-lock braking or cruise control. The use of such embedded systems in the automotive domain requires a revised development process that addresses their particular features. LÄS MER

  5. 4. Analysis and control of magnetic forces in synchronous machines

    Författare :J. J. Pérez-Loya; Urban Lundin; Anouar Belahcen; Uppsala universitet; []
    Nyckelord :eccentricity; electromagnetics; electromagnetic forces; excitation; magnetic fields; magnetic forces; magnetic thrust bearing; rotor drive; split rotor; starting; synchronous generators; synchronous machines; synchronous motors; unbalanced magnetic pull; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : In a synchronous machine, radial, tangential, and axial forces are generated. In this thesis, three different technologies to control them are proposed. The first one, involves the utilization of the radial forces that arise between the rotor and the stator. LÄS MER

  7. 5. Bryta upp och börja om : Berättelser om flyktingskap, skolgång och identitet

    Författare :Ulrika Wigg; Gunnel Colnerud; Sven Andersson; Pirjo Lahdenperä; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Refugee; immigrant; young adults; refugee children; life story; life history; identity; identity construction; identity as story; life chances; tourists; vagabonds; risk; trust.; Flykting; invandrare; unga vuxna; flyktingbarn; livsberättelser; identitet; identitetsskapande; identitet som berättelse; livschanser; vagabonder; risk; tillit.; Education; Pedagogik;

    Sammanfattning : Föreliggande avhandling har som syfte att belysa, analysera och diskutera hur unga människor berättar om sina erfarenheter av att tvingas bryta upp från sitt hemland och börja om i ett nytt land under sin skolgång. Åtta unga vuxna, fyra kvinnor och fyra män, deltog i livsberättelseintervjuer kring detta tema. LÄS MER