Essays about: "Christoffer Johansson"

Showing result 1 - 5 of 25 essays containing the words Christoffer Johansson.

  1. 1. Integrated DC fast charger in an electric vehicle

    University essay from Lunds universitet/Industriell elektroteknik och automation

    Author : Christoffer Johansson; Axel von Keyserlingk; [2022]
    Keywords : Boost converter; DC charging; Electric machine; Inverter; Electric vehicle; Technology and Engineering;

    Abstract : More and more electric vehicles are emerging with a nominal battery voltage higher than what most older DC fast chargers are capable of charging. This requires the vehicle manufacturers to include a high power DC to DC converter in order to be able to charge at these stations, adding cost and complexity. READ MORE

  3. 2. Validation of the attitude control of KNATTE with flexible appendages

    University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Author : Christoffer Johansson; [2022]
    Keywords : KNATTE; flexible appendages; control; SMC; LQG; PWM; PWPF;

    Abstract : The effect of flexible panels on a spacecraft during attitude movement may induce problems if not correctly accounted for in the control system for the spacecraft. The aim of this thesis is to find and evaluate, control algorithms that could be suitable for the Kinesthetic Node and Autonomous Table-Top Emulator (KNATTE) with two flexible mock-up solar panels during an attitude movement of 20 degrees. READ MORE

  4. 3. A comparison of energy usage between LoRa 433Mhz and LoRa 868MHz

    University essay from Jönköping University/JTH, Avdelningen för datavetenskap

    Author : Kevin Johansson; Christoffer Eklund; [2021]
    Keywords : LoRa; Internet of things; Data rate; Energy usage;

    Abstract : The number of devices connected to the internet is constantly increasing and therefore putting more weight on the importance of low energy usage. LoRa which is the physical part of the LoRaWAN communication protocol that this paper focuses on is popular in the area of IoT because of its low energy usage. READ MORE

  5. 4. Do Mergers and Acquisitions Increase Shareholder value? – An Event Study of companies within the renewable energy/cleantech industry

    University essay from Lunds universitet/Företagsekonomiska institutionen

    Author : Christoffer Johansson; Christian Lüning; [2020]
    Keywords : Business and Economics;

    Abstract : This thesis research whether mergers and acquisitions in the renewable energy industry create value for the acquiring firms’ shareholders. To research this, an event study methodology has been employed where three different event windows are studied in the short term, and one event window is studied in the long term. READ MORE

  6. 5. User Preferences of Application Attributes During Product Browsing : An Investigation of Customer Experience in Fashion E-Commerce

    University essay from Linköpings universitet/Logistik- och kvalitetsutveckling

    Author : Anton Johansson; Christoffer Sjöholm; [2019]
    Keywords : Quality; Customer Experience; User Experience; Customer Satisfaction; Theory of Attractive Quality; Kano Model; Mobile Application; Fashion Industry.;

    Abstract : In a fast-changing retail environment, including hard competition and demanding consumers, the customer experience of the purchasing service is crucial to gain a competitive advantage. Since consumers are to some extent moving from offline to online, and from desktop shopping to purchasing clothing in a mobile application, there is a need for investigating consumers expectations of their experience of a mobile application. READ MORE