Avancerad sökning

Visar resultat 16 - 20 av 47 avhandlingar som matchar ovanstående sökkriterier.

  1. 16. Extreme Load Conditions for Wind Powered Direct Drive PM Generators

    Författare :Fredrik Bülow; Uppsala universitet; []
    Nyckelord :;

    Sammanfattning : Wind energy is a rapidly growing energy source with vast potential. Vertical axis wind turbines could be more cost-effective than the three bladed horizontal axis turbines that dominate today. LÄS MER

  3. 17. Towards a methodology for integrated design of mechatronic servo systems

    Författare :Fredrik Roos; Jan Wikander; Hans Johansson; Hendrik van Brussel; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mechatronics; Servo Systems; Design Methodology; Integrated Design; Construction engineering; Konstruktionsteknik;

    Sammanfattning : Traditional methods for mechatronics design are often based on a sequential approach, where the mechanical structure is designed first, and then fitted with off-the-shelf electric motors, drive electronics, gearheads and sensors. Finally a control system is designed and optimized for the already existing physical system. LÄS MER

  4. 18. On Design and Analysis of a Novel Transverse Flux Generator for Direct-driven Wind Application

    Författare :Dmitry Svechkarenko; Chandur Sadarangani; Zi-Qiang Zhu; KTH; []
    Nyckelord :Transverse flux machines; permanent magnet machines; finite element analysis; direct-driven generator; offshore wind turbine; renewable energy;

    Sammanfattning : This thesis deals with the analysis of a permanent magnet synchronous generator suited for direct-drivenwind turbines inmegawatt class. The higher specific torque and power density of a transverse flux permanent magnet machine in comparison to conventional radial-flux machines make it a promising solution for direct-driven wind turbine generators. LÄS MER

  5. 19. On-board Feature Extraction for Clutch Slippage Deviation Detection

    Författare :Elisabeth Källström; Ulf Bodin; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Datorstödd maskinkonstruktion; Computer Aided Design;

    Sammanfattning : Construction equipment companies continuously upgrade their products to meetcustomer demands, staying competitive with market challenges as well as improving sales and profits. With increased complexities in heavy duty machines today, up-time is considered an important aspect of the construction equipment business because it reduces warranty and service cost, while increasing sales and overall customer satisfaction. LÄS MER

  7. 20. Analysis of Ball CV-joints of Fixed Type

    Författare :Peter Andersson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; frictional forces; displacements; contact angles; load distribution;

    Sammanfattning : Two theoretical models for analysing ball CV-joints of fixed type are presented. The models, which have been implemented in computer programs, calculate internal conditions such as load distribution, contact angles and displacements for different operating conditions. LÄS MER