Results 51 to 60 of about 5,475 (232)
Cost and losses associated with offshore wind farm collection networks which centralise the turbine power electronic converters [PDF]
Costs and losses have been calculated for several different network topologies, which centralise the turbine power electronic converters, in order to improve access for maintenance.
Anaya-Lara, Olimpo, Parker, Max
core +1 more source
DC fault isolation study of bidirectional dual active bridge DC/DC converter for DC transmission grid application [PDF]
Fast isolation and detection of DC faults is currently a limiting factor in high power DC transmission grid development. Recent research has shown that the role of DC/DC converters is becoming increasingly important in solving various DC grid challenges ...
Aboushady, Ahmed A. +2 more
core +2 more sources
Multi‐Layer MTDC Protection: Design and Simulation Assessment
This study proposes a novel multi‐layer protection architecture for multi‐terminal DC systems that separates fault current‐limiting and interruption functions. By combining a thyristor‐based fault current limiter with an active resonance circuit breaker, the scheme significantly reduces peak fault currents and di/dt stress, enabling a more compact ...
Jong‐Geon Lee +3 more
wiley +1 more source
Modular multilevel converters are widely used voltage source converters in a variety of applications, such as power transmission, renewable energy, and motor drives.
Bhavik Brahmbhatt +5 more
doaj +1 more source
This paper deals with the problem of trajectory tracking of a class of bilinear systems with time--varying measurable disturbance. A set of matrices {A,B_i} has been identified, via a linear matrix inequality, for which it is possible to ensure global ...
Bergna, G. +5 more
core +4 more sources
Hybrid and modular multilevel converter designs for isolated HVDC–DC converters [PDF]
Efficient medium and high-voltage dc-dc conversion is critical for future dc grids. This paper proposes a hybrid multilevel dc-ac converter structure that is used as the kernel of dc-dc conversion systems.
Adam, G.P. +4 more
core +1 more source
Stability and Synchronization of MMC‐HVDC Systems Using SRF and Inertia‐Based PLLs
This study investigates the influence of synchronous reference frame PLL (SRF‐PLL) and the inertia PLL (IPLL) on the stability of grid‐connected modular multilevel converter high voltage direct current (MMC‐HVDC) systems. The findings highlight intrinsic stability limitations of PLL‐based systems, offering insights toward more stable, PLL‐less ...
Shuai Wang, Robin Preece, Mike Barnes
wiley +1 more source
Aiming at the problem that silicon-controlled rectifiers (SCR) and pulse width modulation (PWM) rectifiers cannot balance high power levels, high hydrogen production efficiency, and high grid connected quality in the current research on rectifier power ...
Cheng Huang, Yang Tan, Xin Meng
doaj +1 more source
A 43-level 33 kV 3-phase modular multilevel cascaded converter for direct grid integration of renewable generation systems [PDF]
This paper proposed a 43-level 3-phase 33 kV modular multilevel cascaded (MMC) converter for direct grid integration of renewable generation systems. A high-frequency magnetic-link is considered to generate isolated and balanced multiple dc sources for ...
Guo, Y +4 more
core +1 more source
This paper proposes a non‐contact method for measuring the turn‐off time of insulated‐gate bipolar transistor (IGBT) devices in modular multilevel converters (MMC) submodules, using the decay of load‐side common‐mode current. The technique leverages existing current‐sensing infrastructure and avoids intrusive modifications, enabling real‐time ...
Jiyun Liu +7 more
wiley +1 more source

