Sökning: "HVDC"
Visar resultat 6 - 10 av 103 avhandlingar innehållade ordet HVDC.
6. Converter interactions in VSC-based HVDC systems
Sammanfattning : The main objective of this thesis is to perform stability and control studies in the area of VSC-HVDC. A major part of the investigation focuses on the explanation of poorly-damped conditions and instability that are linked to dc-side resonances. LÄS MER
7. Modulation of Modular Multilevel Converters for HVDC Transmission
Sammanfattning : The outstanding features of modular multilevel converters (MMC) have recently gained much attention in the high-voltage direct-current (HVDC) transmission field. Power quality, converter cost and system performance are three crucial aspects of HVDC MMCs which are directly linked to the converter modulation and switching schemes. LÄS MER
8. Multi-terminal HVDC protections based on transient line modeling
Sammanfattning : High voltage direct current (HVDC) is considered one of the critical technologies required for the power system to enable the transition toward renewables. With an increasing geographical density of HVDC converters, there is a potential for optimization by connecting more than two converters into a shared DC transmission system, thus forming a multi-terminal HVDC (MTDC) system. LÄS MER
9. Control and Planning of Multi-Terminal HVDC Transmission Systems
Sammanfattning : With recent advances in power electronic technology, high-voltage direct current (HVDC) transmission system has become an alternative for transmitting power, especially over long distances. Multi-terminal HVDC (MTDC) systems are proposed as HVDC systems with more than two terminals. LÄS MER
10. Hybrid Converters for HVDC Transmission
Sammanfattning : The line-commutated converter (LCC) and the voltage-source converter (VSC) are the two main converter technologies utilized in high-voltage direct current (HVDC) transmission applications. Depending on the application requirements, one technology might be more advantageous than the other. LÄS MER