Essays about: "Circuit protection"

Showing result 21 - 25 of 41 essays containing the words Circuit protection.

  1. 21. Automatic post-fault analysis based on disturbance data stored in substation devices : Approach towards the preventive maintenance

    University essay from KTH/Hälsoinformatik och logistik

    Author : Riad Yalda; Miroslav Urosevic; [2019]
    Keywords : COMTRADE file; preventive maintenance; relay protection; automatic post-fault analysis; IEC 61850; wavelet transform.; COMTRADE filer; förebyggande underhåll; reläskydd; automatisk efterfelsanalys; IEC 61850; wavelettransform.;

    Abstract : This report studies the possibilities of minimizing unplanned maintenance work and improving the availability of power supply by enabling preventive maintenance in power systems, without having to make additional investments in the existing systems. This was done using information from COMTRADE files (disturbance recording files) that are created in the event of a fault in the power system. READ MORE

  3. 22. High voltage transient protection for automotive

    University essay from Mittuniversitetet/Institutionen för elektronikkonstruktion

    Author : Viktor Lindholm; [2019]
    Keywords : Automotive; protection circuit; Load dump; pulse 1; pulse 2a; ISO 16750; ISO 7637; voltage transients; double exponential transient; pulse generator.;

    Abstract : Electronics for automotive needs to be able to handle different situations that can occur on the power line, such as high voltage transients. ISO16750 and ISO-7637 describes different pulses and tests a system needs to be able to handle. READ MORE

  4. 23. State-of-the-art DC Current Interruption Concept using SiCMOSFETs

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Georgios Papadopoulos; [2019]
    Keywords : ;

    Abstract : The transportation is in transition to the electrification era where the main source of energy for thevehicles is supplied by high energy propulsion batteries with voltages above 400 V. Currently the majority of the batteries are lithium-ion batteries and it is crucial to protect them from shortcircuits in order to ensure the safe operation in case of a vehicle crash or misuse of the vehicle. READ MORE

  5. 24. Microgrid Safety and Protection Strategies

    University essay from KTH/Elektroteknisk teori och konstruktion

    Author : Aryudha Hartono; [2018]
    Keywords : IB-RES; grid-connected mode; islanded mode; short circuit; IED; directional zero and negative sequence current protection; unbalanced load flow; protection coordination; fault ride-through;

    Abstract : One of the challenging issues with the Microgrid is that the bidirectional power flow providedby the distributed generator (DG) which modify the fault current level. Furthermore, theinverter based-renewable energy source (IB-RES) limits the total fault current contributionto the grid due to its thermal capability. READ MORE

  6. 25. Implementation and Benchmarking of a Crypto Processor for a NB-IoT SoC Platform

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Sébastien Fuhrmann; Luis Cavo; [2018]
    Keywords : 3GPP; IoT; HLS; security; cryptography; AES; SNOW; ZUC; hardware; ASIC; confidentiality; integrity; cipher; Technology and Engineering;

    Abstract : The goal of this Master’s Thesis is to investigate the implementation of cryptographic algorithms for IoT and how these encryption systems can be integrated in a NarrowBand IoT platform. Following 3rd Generation Partnership Project (3GPP) specifications, the Evolved Packet System (EPS) Encryption Algorithms (EEA) and EPS Integrity Algorithms (EIA) have been implemented and tested. READ MORE