Sökning: "Load modeling"
Visar resultat 16 - 20 av 277 avhandlingar innehållade orden Load modeling.
16. Modeling, Control and Protection of Low-Voltage DC Microgrids
Sammanfattning : Current trends in electric power consumption indicate an increasing use of dc in end-user equipment, such as computers and other electronic appliances used in households and offices. With a dc power system, ac/dc conversion within these loads can be avoided, and losses reduced. LÄS MER
17. DC-DC Converters - Dynamic Model Design and Experimental Verification
Sammanfattning : To obtain high performance control of a dc-dc converter, a good model of the converter is needed. The load usually affects the dynamics and one way to take this into consideration is to regard the load as a part of the converter. The load is often the most variable part of this system. LÄS MER
18. Magnetizing Currents in Power Transformers : Measurements, Simulations, and Diagnostic Methods
Sammanfattning : This thesis demonstrates a method for transformer core diagnostics. The method uses the no-load current of the transformer as an indicator, and gives different characteristic signatures for different types of faults or defects. Using the no-load current for the diagnostic gives high sensitivity. LÄS MER
19. MODELING AND OPTIMIZATION OF WASHING MACHINE VIBRATION DYNAMICS DURING SPINNING
Sammanfattning : A washing machine as a product is familiar to almost everyone in all developed countries. Thisthesis deals with the dynamics of modern washing machines of household type. LÄS MER
20. Efficient Modeling of Modular Multilevel Converters for HVDC Transmission Systems
Sammanfattning : The drive towards getting more and more electrical energy from renewable sources, requires more efficient electric transmission systems. A stronger grid, with more controllability and higher capacity, that can handle power fluctuations due to a mismatch between generation and load is also needed. LÄS MER