Search for dissertations about: "LINEAR POWER SUPPLY"

Showing result 21 - 25 of 42 swedish dissertations containing the words LINEAR POWER SUPPLY.

  2. 21. Optimization modeling of frequency reserves and inertia in the transition to a climate-neutral electricity system

    Author : Jonathan Ullmark; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; generation expansion planning; frequency reserves; inertia; Energy system modeling; synthetic inertia; frequency control;

    Abstract : The ongoing transition towards electricity production systems that are dominated by wind and solar power challenge both the traditional strategy for meeting a varying electricity demand and the traditional way of controlling the AC frequency of the electricity grid. This work investigates how frequency reserves (FR) and inertia, as well as inter-hourly variation management interact in the transition to a climate-neutral electricity system. READ MORE

  4. 22. Production Planning of CHP plants in transition towards energy systems with high share of renewables

    Author : Mahsa Daraei; Eva Thorin; Pietro Elia Campana; Anders Avelin; Louise Ödlund; Mälardalens högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy- and Environmental Engineering; energi- och miljöteknik;

    Abstract : The global energy system is undergoing a transformative change towards renewable energies. The share of Renewable Energy Sources (RES) and bioenergy in the world’s primary energy use has increased in the recent years. READ MORE

  5. 23. Optimisation of Local and National Energy Systems : Development and Use of the MODEST Model

    Author : Dag Henning; Carl-Johan Fogelholm; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Energy may be supplied by a multitude of components. Computer simulation helps in finding a beneficial system design. The energy-system optimisation model MODEST has been developed, and it has been applied to municipal, regional, and national energy systems. READ MORE

  6. 24. Measurements and Modelling of Low-Frequency Disturbances in Induction Machines

    Author : Torbjörn Thiringer; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : The thesis deals with the dynamic response of the induction machine to low-frequency perturbations in the shaft torque, supply voltage and supply frequency. Also the response of a two-machine group connected to a weak grid is investigated. READ MORE

  7. 25. Short- and long-term variability in future electricity systems – Ensuring the flexibility to manage the grid frequency and inter-annual variations

    Author : Jonathan Ullmark; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; inter-annual variability; flexibility; frequency control; battery storage; Electricity systems modelling; capacity expansion planning;

    Abstract : To achieve climate mitigation targets, the net climate impact from electricity generation must be drastically reduced in the near future, and eventually eliminated. The level of generation must also be increased to accommodate the increasing demand as the transport and industry sectors undergo electrification. READ MORE