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Search results for: EARTH CURRENTS

  • Katedra Elektroenergetyki

    * ochrona i bezpieczeństwo pracy systemu elektroenergetycznego, * stabilność sterowanie pracą systemu elektroenergetycznego, * kompleksowe modelowanie systemów elektroenergetycznych oraz szczegółowe modele elementów systemu, * urządzenia FACTS i systemy HVDC w systemach elektroenergetycznych, * odnawialne źródła energii w systemach elektroenergetycznych, * urządzenia i instalacje elektryczne, * optymalizacja struktury i parametrów...

  • Katedra Elektrotechniki, Systemów Sterowania i Informatyki

    W Katedrze Elektrotechniki, Systemów Sterowania i Informatyki prowadzone są badania w tematyce podstaw elektrotechniki, zaawansowanych systemów sterowania, prototypowania dedykowanych rozwiązań sprzętowych w FPGA. Prowadzone badania skupiają się również na wykorzystaniu zaawansowanych technik analizy komputerowej w systemach sterowania oraz elektrotechniki.

  • Katedra Automatyki Napędu Elektrycznego i Konwersji Energii

    * nieliniowe sterowanie maszynami elektrycznymi * napędy elektryczne o sterowaniu bez czujnikowym * sterowanie przekształtnikami energoelektronicznymi, w tym przekształtnikami na średnie napięcia i przekształtnikami sieciowymi * energoelektroniczne układy przetwarzania energii w odnawialnych źródłach energii * projektowanie i badanie falowników i przetwornic * projektowanie układów sterowania mikroprocesorowego z wykorzystaniem...

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Search results for: EARTH CURRENTS

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Search results for: EARTH CURRENTS

  • Computer System for Evaluation of Shock Hazard in Circuits with Non-sinusoidal Earth Currents

    Publication

    - Year 2015

    Effects of current on people are mainly considered for 50/60 Hz sinusoidal current and smooth direct current. However, modern low voltage circuits are very often equipped with power electronics converters – rectifiers, frequency converters, therefore non-sinusoidal earth currents (touch currents) occur. For non-sinusoidal currents safety criteria should be modified. This paper presents a computer system, based on LabVIEW environment,...

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  • Earth wires currents calculation by tableau analysis

    Publication

    The paper presents a new method to compute a phase-to-earth fault current distribution in overhead transmission line. The method is based on the tableau analysis of an unbalanced, multi-wire model of a transmission line. It allows for the calculation of current distribution in overhead earth wires along the transmission line. Additionally, it may be used to calculate currents in a tower’s earthing system as well as voltages over...

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  • Disturbances of Earth magnetic field caused by eddy currents of airplane

    Publication

    - Year 2008

    The uniform magnetic field of the Earth in the surrounding of a mobile, metallic object undergoes deformation by eddy currents. The influence of the moving, conducting object on the Earth's total magnetic field depends on the object's shape, position and speed of the changes relative to the magnetic field vector of the Earth, as well as the electric conductivity and the relative magnetic permeability of the material. Disturbances...

  • Behavior of residual current devices at earth fault currents with DC component

    Publication

    - SENSORS - Year 2022

    Low-voltage electrical installations are increasingly saturated with power electronic converters. Due to very high popularity of photovoltaic (PV) installations and the spread of electric vehicles (EV) as well as their charging installations, DC–AC and AC–DC converters are often found in power systems. The transformerless coupling of AC and DC systems via power electronic converters means that an electrical installation containing...

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  • Testing sensitivity of A-type residual current devices to earth fault currents with harmonics

    Publication

    - SENSORS - Year 2020

    In many applications, modern current-using equipment utilizes power electronic converters to control the consumed power and to adjust the motor speed. Such equipment is used both in industrial and domestic installations. A characteristic feature of the converters is producing distorted earth fault currents, which contain a wide spectrum of harmonics, including high-order harmonics. Nowadays, protection against electric shock in...

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