Sökning: "concept modeling"

Visar resultat 11 - 15 av 312 avhandlingar innehållade orden concept modeling.

  1. 11. SEMANTIC INFORMATION AND PHYSICAL MULTI-DOMAIN MODELING AND SIMULATION FOR POWER SYSTEMS

    Författare :Francisco José Gómez; Luigi Vanfretti; Svein Olsen; Peter Palensky; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; POWER SYSTEMS; MODELING; SIMULATION; CIM; MODELICA; ISO 15926; MULTI-DOMAIN; UML; SYSML; Energy Technology; Energiteknik;

    Sammanfattning : There are different reasons for combining different modeling languages and simulationlanguages: Exchange of more detailed information about power network components, theirparameters and, most importantly, mathematical equations describing their behavior andthe exchange of a mathematical description, using equation-based languages (e.g. LÄS MER

  3. 12. Modeling and Control of VSC-HVDC Links Connected to Weak AC Systems

    Författare :Lidong Zhang; Hans-Peter Nee; Alan Wood; KTH; []
    Nyckelord :Control; modeling; multivariable feedback control; HVDC; power systems; stability; subsynchronous torsional interaction; voltage-source converter; weak ac systems;

    Sammanfattning : For high-voltage direct-current (HVDC) transmission, the strength of the ac system is important for normal operation. An ac system can be considered as weak either because its impedance is high or its inertia is low. LÄS MER

  4. 13. Modeling and Simulation of Dial-a-Ride and Integrated Public Transport Services

    Författare :Carl Henrik Häll; Jan T. Lundgren; Stefan Voss; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; dial-a-ride; simulation; optimization; modeling; paratransit; public transport; Other technology; Övriga teknikvetenskaper;

    Sammanfattning : Traditional public transport systems are most often insufficient to provide a good transport service to everyone. Especially, it is not always possible for elderly and disabled persons to use the regular system consisting of timetabled services operating along fixed routes. LÄS MER

  5. 14. Current harmonic modeling of aggregated electric vehicle loads in the low voltage grid

    Författare :Georgios Foskolos; Erik Dahlquist; Lennart Söder; Mälardalens högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electric Vehicles; current harmonics; modeling; aggregation; power-exponential functions; Energy- and Environmental Engineering; energi- och miljöteknik;

    Sammanfattning : The proliferation of Electric Vehicles (EVs) poses new challenges for the Distribution System Operator (DSO). For example, the rectifiers that are used for charging EV batteries could significantly influence Power Quality (PQ), in terms of harmonic distortion. LÄS MER

  7. 15. On multiscale modeling of pearlitic steel

    Författare :Erik Lindfeldt; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cementite; crystal plasticity; Pearlite; multiscale modeling; computational homogenization; digital image correlation; ferrite; in-situ SEM;

    Sammanfattning : By studying pearlitic steels using a scanning electron microscope it can be observed that pearlite is a two-phase material with cementite lamellae embedded in a matrix of ferrite. The cementite is commonly described as being stiff and brittle in comparison to the ferrite which is considered to have a soft and ductile mechanical behavior. LÄS MER