Essays about: "mixed loads"

Showing result 1 - 5 of 17 essays containing the words mixed loads.

  1. 1. Extension of low voltage distribution by pure DC or mixed AC/DC parts for integration of solar PV and EV charging

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

    Author : Sofie Jiang; [2022]
    Keywords : LVDC; LVAC; solar PV system; electric vehicle charging station; IKN-regulation; distribution system; RES integration; LVDC; LVAC; solceller; elfordon; laddstolpar; IKN-regelverk; distributionsnät; förnyelsebara energikällor;

    Abstract : This work examines the local distribution system in two residential areas in two Swedish towns, Oxelösund and Karlskrona, and studies how integration of PV systems and electric vehicle (EV) charging stations (CS) will affect the present distribution system. The research questions focus on the economic feasibility of a LVDC system, how it compares to a traditional LVAC (low voltage alternating current) system from an economic and technical perspective, and the possibilities a LVDC system brings to other DC component applications. READ MORE

  3. 2. Atomic wear mechanisms of hard chrome against Al2O3

    University essay from Malmö universitet/Fakulteten för teknik och samhälle (TS)

    Author : Raul Fierro Tobar; Marius Yuku; [2021]
    Keywords : Wear mechanisms; DFT; MD; hard chrome; aluminium; RDF; adhesive; abrasive; Nötning; DFT; MD; hårdkrom; aluminium; RDF; adhesiv; abrasiv;

    Abstract : Hard chrome exhibit hardness of about 70 HRC and lubricity that prevents seizing and galling and is therefore the common first choice for engineers to reduce friction and minimize wear. These properties enable engineering applications such as cutting and drilling, especially in manufacturing, production and consumer good industries. READ MORE

  4. 3. Enhancement of evaluation method of journal bearings’ performance in heavy-duty diesel engines

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Sateesh Nataraj; [2021]
    Keywords : Asperity contact pressure; elastohydrodynamic lubrication; friction; flow factors; run-in wear profile; Asperitetskontakttryck; elastohydrodynamik; friktion; flödesfaktorer; slitageprofil efter inkörning;

    Abstract : Journal bearings are being used in various locations of an internal combustion engine. They contribute to a large portion of total engine friction and lowering it means a significant contribution to CO2 reduction. READ MORE

  5. 4. Evaluation and comparison of ballastless track systems with regards to system and performance characteristics

    University essay from KTH/Spårfordon

    Author : Willand Björkquist; Ismayil Janjua; [2020]
    Keywords : ;

    Abstract : As axle loads and speeds constantly increase in rail transport, new track systems are being developed. One such development is the ballastless track system. READ MORE

  6. 5. Tribological performance of different crankshaft bearings in conjunction with textured shaft surfaces

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Lakshminarayana Reddy Tamatam; [2017]
    Keywords : Tribology; journal bearings; engine main bearings; automotive; friction; wear;

    Abstract : Improving vehicle efficiency and complying to stricter exhaust emission legislations are some of the driving factors to advancement in technology of engine components. The main bearings in an internal combustion engine contribute significant amount of friction. These bearings support engine loads and allow free rotation of the crankshaft. READ MORE