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Showing result 1 - 5 of 16 swedish dissertations matching the above criteria.

  2. 1. Modeling, Model Validation and Uncertainty Identification for Power System Analysis

    Author : Tetiana Bogodorova; Luigi Vanfretti; Konstantin Turitsyn; Francisco Gonzalez-Longatt; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Power system modelling; model validation; parameter identification; uncertainty identification; Modelica; Electrical Engineering; Elektro- och systemteknik;

    Abstract : It is widely accepted that correct system modeling and identification are among the most important issues power system operators face when managing instability and post-contingency scenarios. The latter is usually performed involving special computational tools that allow the operator to forecast, prevent system failure and take appropriate actions according to protocols for different contingency cases in the system. READ MORE

  4. 2. Flywheel in an all-electric propulsion system

    Author : Johan Lundin; Hans Bernhoff; P-O Västeräng; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Flywheel; electric vehicle; hybrid vehicle; power management; energy storage;

    Abstract : Energy storage is a crucial condition for both transportation purposes and for the use of electricity. Flywheels can be used as actual energy storage but also as power handling device. Their high power capacity compared to other means of storing electric energy makes them very convenient for smoothing power transients. READ MORE

  5. 3. Model-Integrated Engineering of Smart Energy Distribution Systems

    Author : Nikolai Galkin; Valeriy Vyatkin; Nicholas Etherden; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Digital Twin; Data Centre; Automation; IEC 61850; IEC 61499; MATLAB; Dependable Communication and Computation Systems; Kommunikations- och beräkningssystem;

    Abstract : Model-Based Systems Engineering (MBSE) is a formal method that is used to support analysis, design, independent verification, and validation inherent in the development of software and hardware systems. MBSE applications are present in many areas of our daily lives, including manufacturing, robotics, healthcare, automation, etc. READ MORE

  6. 4. Data acquisition and signal conditioning for low power measurement systems

    Author : Kirill Kozmin; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industrial Electronics; Industriell elektronik;

    Abstract : Integrated circuit (IC) power consumption and die are two important parameters that can define its cost as well as performance. That is why these two topics remain very important both in industry and in the research community. READ MORE

  7. 5. CFD-based Analysis of Combustion Processes in a Free-Piston Diesel Engine

    Author : Miriam Bergman; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; chemical kinetics; Diesel; homogeneous charge compression ignition HCCI ; free-piston; equivalence ratio vs. temperature maps; computational fluid dynamics CFD ; surrogate fuel;

    Abstract : The Free Piston Engine (FPE) which is capable of operating in a variable compression ratio mode, allows flexible auto-ignition control on a cycle-to-cycle basis without any hardware modifications. In this study combustion processes in an FPE were examined using the KIVA-3V CFD code with detailed chemical kinetics (305 reactions among 70 species) of a Diesel surrogate fuel incorporated. READ MORE