Essays about: "electric current"

Showing result 1 - 5 of 233 essays containing the words electric current.

  1. 1. Wave power - The future of energy supply? Focusing on its sealing solutions

    University essay from KTH/Maskinkonstruktion (Inst.); KTH/Maskinkonstruktion (Inst.)

    Author : Christian Kälvegren; Tobias Sjölin; [2017]
    Keywords : Gaiter; sealing concepts; wave power; Damask; tätningskoncept; vågkraft;

    Abstract : A new concept for extracting renewable power has been developed at KTH Electric Power and Energy Systems, this time regarding wave power. Unlike other wave energy converters this concepts generator opens up the possibility to be operative also during low speed and at the same time preserve high power density and efficiency. READ MORE

  2. 2. Future network loading and tariffs with electric vehicles

    University essay from Lunds universitet/Industriell elektroteknik och automation

    Author : Axel Philipson; Hampus Lavin; [2017]
    Keywords : Technology and Engineering;

    Abstract : Electric vehicles have received a lot of attention lately and are expected to boom in the near future. In the power grid industry this raises concern on whether the grid is dimensioned to handle the power peaks related to charging. Solar cells are also a hot topic when discussing future energy supply and how it will impact on the grid. READ MORE

  3. 3. Electric Propulsion in Passenger Jet Airplanes : Requirements to realize all-electric propulsion 

    University essay from KTH/Energiteknik

    Author : Peter Bjarnholt; [2017]
    Keywords : ;

    Abstract : Passenger jet airplane propulsion systems are today dominated by turbo-jet engines that burn fossil fuels. The unsustainability of this is a concern both from an economic and environmental point of view. READ MORE

  4. 4. Development of battery models for on-board health estimation in hybrid vehicles

    University essay from KTH/Materialvetenskap

    Author : Javier Riesco Refoyo; [2017]
    Keywords : Lithium-ion battery; State-of-health; Resistance; Capacity; Materials; Model; Equivalent circuit model; Support vector machine; Neural networks;

    Abstract : Following the positive reception of electric and hybrid transport solutions in the market, manufacturers keep developing their vehicles further, while facing previously undertaken challenges. Knowing the way lithium-ion batteries behave is still one of the key factors for hybrid electric vehicles (HEVs) development, especially for the requirements of the battery management system during their operation. READ MORE

  5. 5. Bearing current and shaft voltage measurement in electrical motors

    University essay from Högskolan Väst/Avdelningen för data-, elektro- och lantmäteriteknik

    Author : Edo Kolic; [2017]
    Keywords : Modulated drive; electrical motors; production;

    Abstract : Due to the fast-rising voltage pulses of pulse width modulated drives, the generated shaft voltage of electrical motors causes electrical discharge currents in bearings. These discharges can cause bearing failure leading to costly maintenance and unexpected production stops. READ MORE