Essays about: "ion drift"

Showing result 11 - 15 of 26 essays containing the words ion drift.

  1. 11. Investigation of ion mobility in insulation liquids for transformers.

    University essay from

    Author : Bruce Dondogori; [2020]
    Keywords : ;

    Abstract : This thesis studies a method of measuring ion mobility in insulation liquids for transformers (transformer oil). This method works by using a square wave voltage to make the charged particles (space charge) inside the oil move between two electrodes. READ MORE

  3. 12. Life cycle assessment of industrialized lithium-ion battery recycling : Mechanical and hydrometallurgical treatment from an ex-ante perspective

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Jonathan Balsvik; [2020]
    Keywords : Environmental impact; climate change; carbon footprint; up-scaling; end-of-life; waste management;

    Abstract : As the use of lithium-ion batteries exponentially increases through demand for electric vehicles and energy storage systems, so will the need for end-of-life treatment subsequently increase. Recycling the valuable materials from batteries in an efficient and extensive fashion could decrease the environmental impacts of batteries. READ MORE

  4. 13. Measurements of resistivity in transformer insulation liquids

    University essay from Uppsala universitet/Institutionen för elektroteknik

    Author : Jonathan Hägerbrand; [2020]
    Keywords : transformer oil; resistivity; ions; ion drift model; HVDC; contact resistance;

    Abstract : This thesis focuses on measuring techniques and results of resistivity in four commercially available insulating transformer oils: mineral oil, ester oil and two isoparaffin oils. Two measuring techniques, the industrially used diagnostic system for electrical insulation IDA and the Labview implemented Triangular Method, are used for resistivity measurements and the techniques are compared, a correction algorithm to the triangular method is suggested. READ MORE

  5. 14. Key Performance Indicators for the monitoring of large-scale battery storage systems

    University essay from KTH/Energiteknik

    Author : Emeric Brun; [2019]
    Keywords : ;

    Abstract : In the context of the fight against climate change, the electricity sector is experiencing a complete renewal. Power grids are undergoing a transformation from centralized and unidirectional systems to multilevel and more integrated networks with, among others, the insertion of intermittent Renewable Energy Sources (RES) on the production side and with the emergence of new consumer behaviors on the demand side. READ MORE

  6. 15. Detection of lithium plating in lithium-ion batteries

    University essay from KTH/Kemiteknik

    Author : Carl Johan Björkman; [2019]
    Keywords : Lithium plating; Batteries; Battery monitoring; Battery charging; Battery ageing; Litiumplätering; Batterier; Batteriövervakning; Batteriladdning; Batteriåldring;

    Abstract : With an increasing demand for sustainable transport solutions, there is a demand for electrified vehicles. One way to store energy on board an electrified vehicle is to use a lithium-ion battery (LIB). This battery technology has many advantages, such as being rechargeable and enabling reasonably high power output and capacity. READ MORE